No Genome is an Island Extra References 8

 

8. The Virosphere as an Evolutionary R & D Sector

 

·      8.A. DNA Spreading.

 

o   Phage as sources of environmental DNA. Phage-encapsulated DNA can be taken up by bacteria (Claverys, Prudhomme et al. 2006; Seitz and Blokesch 2013), archaea (Lipscomb, Stirrett et al. 2011; Atomi, Imanaka et al. 2012), and yeast (Mitrikeski 2015). Environmental reservoirs for antibiotic resistance DNA determinants, particularly in soils associated with intensive agriculture (Colomer-Lluch, Jofre et al. 2011; Anand, Bera et al. 2016).

 

o   Role of phages in horizontal transfers: (Muniesa, Colomer-Lluch et al. 2013; Balcazar 2014; Bobay, Touchon et al. 2014; Touchon, Bernheim et al. 2016; Harrison and Brockhurst 2017)

 

o   Marine viruses modify metazoan hosts. Solar-powered sea slugs (Mujer, Andrews et al. 1996; Pierce, Maugel et al. 1999; Green, Li et al. 2000; Mondy and Pierce 2003; Pierce, Massey et al. 2003)

 

o   Tripartite symbioses between insects, bacteria and phage. (Moran, Degnan et al. 2005; Bordenstein, Marshall et al. 2006)

 

·      8.B. Vector Role of Viruses, GTAs, VLPs and Giant Viruses from Evolutionary “Melting Pots.”

 

o   Protist “Melting Pots” and Vector Role of Viruses, GTAs, VLPs and Giant Viruses (NCLDVs). (Boyer, Yutin et al. 2009; Moliner, Fournier et al. 2010; Slimani, Pagnier et al. 2013; Shterzer and Mizrahi 2015; Wang and Wu 2017)

 

o   NCLDVs (Van Etten and Meints 1999; La Scola, Audic et al. 2003; Filee, Siguier et al. 2007; Ogata and Claverie 2007; Moreira and Brochier-Armanet 2008; Claverie, Grzela et al. 2009; Schroeder, Park et al. 2009; Colson and Raoult 2010; Filee and Chandler 2010; Fischer, Allen et al. 2010; Forterre 2010; Raoult 2010; Raoult and Boyer 2010; Thomas and Greub 2010; Desnues, La Scola et al. 2012; Filée and Chandler 2012; Jeudy, Abergel et al. 2012; Merhej and Raoult 2012; Nasir, Kim et al. 2012; Yoosuf, Yutin et al. 2012; Yutin and Koonin 2012; Boughalmi, Saadi et al. 2013; Claverie 2013; Claverie and Abergel 2013; Colson, Pagnier et al. 2013; Yutin, Colson et al. 2013; Katzourakis and Aswad 2014; Maumus, Epert et al. 2014; Piacente, De Castro et al. 2014; Yutin, Wolf et al. 2014; Abergel, Legendre et al. 2015; Blanc, Gallot-Lavallee et al. 2015; Filee 2015; Koonin, Krupovic et al. 2015; Legendre, Lartigue et al. 2015; Sun, Feschotte et al. 2015; Aherfi, Colson et al. 2016; Fischer and Hackl 2016; Wilhelm, Coy et al. 2016; Colson, La Scola et al. 2017)

 

·      8.C. Adaptive lysogenic conversion of bacteria (Brussow, Canchaya et al. 2004; Casas, Miyake et al. 2006; Casas and Maloy 2011; Fortier and Sekulovic 2013; Harrison and Brockhurst 2017):

 

o   Corynebacterium diptheria (Groman 1953; Groman 1953; Groman 1955; Groman and Eaton 1955; Groman and Memmer 1958)

o   Vibrio cholerae (Waldor and Mekalanos 1996; Das 2014; Wang, Pang et al. 2015)

o   Pseudomonas aeruginosa (Vaca-Pacheco, Paniagua-Contreras et al. 1999; Davies, James et al. 2016; Saucedo-Mora, Castaneda-Tamez et al. 2017)

o   Clostridium botulinum as well as other Clostridium infections (Fortier 2017; Fortier 2018)

o   Escherichia coli (Eichhorn, Heidemanns et al. 2018)

o   Burkholderia cenocepacia (Roszniowski, McClean et al. 2018)

o   Enterococcus faecium (Rigvava, Kusradze et al. 2018)

o   Staphylococcus aureus/MRSA (Lee and Park 2016; Kraushaar, Hammerl et al. 2017)

o   Wolbachia (insect endosymbiont) (Bordenstein and Bordenstein 2016; LePage, Metcalf et al. 2017; Lindsey, Bhattacharya et al. 2018)

o   Aphid endosymbiont (Degnan and Moran 2008)

o   Plant pathogen Ralstonia solanacearum (Askora, Kawasaki et al. 2017).

 

·      8.D. Viral modification of host genomes for adaptive innovation.

 

o   RNA viruses. (Horie, Kobayashi et al. 2013) (Belyi, Levine et al. 2010) Integrated viral cDNA copies often provide an adaptive benefit in the form of protection against superinfection by the cognate viruses. (Parrish, Fujino et al. 2015) (Fujino, Horie et al. 2014) (Kanda, Tristem et al. 2013).

 

o   Marine cyanophages (viruses that infect cyanobacteria) carry sequences encoding photosynthesis proteins, and viruses from deep-sea hydrothermal vent microbiomes encode enzymes in a wide range of cellular metabolic pathways that have nothing to do with virus replication but can be adaptive for prokaryotic cells living in such an isolated environment. (Puxty, Millard et al. 2015; Fridman, Flores-Uribe et al. 2017; He, Li et al. 2017).

 

o   The polydnavirus family of insect viruses (so named because their genomes are composed of multiple small DNA circles) (Webb, Fisher et al. 2009).A more complex set of nested holobiont relationships. These viruses reproduce themselves by a symbiotic association with parasitic wasps (Strand and Burke 2013). The viral genome is integrated into that of the wasp, and virus reproduction only occurs in the wasp ovary. When the wasp injects its egg into the body cavity of an insect host, such as a caterpillar, the virus accompanies the egg and infects host cells. This infection does not lead to polydnavirus reproduction, but polydnavirus genome expression affects the host (caterpillar) immune system and suppresses attacks on the parasitic wasp egg and larvae, thereby facilitating growth of a mature wasp, carrying integrated polydnavirus DNA, inside the parasitized insect. In this way, the integrated virus and the parasitic wasp have a piggy-back symbiotic relationship at the expense of the doubly infected insect host.

 

·      8.E. Endogenous retroviruses (ERVs) in mammalian evolution

 

o   Pluripotency and stem cells. (Peaston, Evsikov et al. 2004; Macfarlan, Gifford et al. 2012; Santoni, Guerra et al. 2012; Fort, Hashimoto et al. 2014; Goke, Lu et al. 2015; Izsvak, Wang et al. 2016). HERV-H transcripts appear to function as long non-coding RNAs (lncRNAs) in the maintenance of the pluripotent state (Kelley and Rinn 2012) (Lu, Sachs et al. 2014) (Durruthy-Durruthy, Sebastiano et al. 2016).

 

o   Placenta. (Harris 1991; Lyden, Johnson et al. 1994; Blackburn 1995; Venables, Brookes et al. 1995; Harris 1998; Langat, Johnson et al. 1998; Blond, Lavillette et al. 2000; Mi, Lee et al. 2000; Bieche, Laurent et al. 2003; Bonnaud, Bouton et al. 2004; Mallet, Bouton et al. 2004; Muir, Lever et al. 2004; Prudhomme, Oriol et al. 2004; Rote, Chakrabarti et al. 2004; Dupressoir, Marceau et al. 2005; Dunlap, Palmarini et al. 2006; Carter and Mess 2007; Malassine, Blaise et al. 2007; Mangeney, Renard et al. 2007; Mess and Carter 2007; Rawn and Cross 2008; Asher, Bennett et al. 2009; Dupressoir, Vernochet et al. 2009; Gimenez, Montgiraud et al. 2009; Heidmann, Vernochet et al. 2009; Noorali, Rotar et al. 2009; Stoye 2009; Black, Arnaud et al. 2010; Dupressoir, Vernochet et al. 2011; Macaulay, Weeks et al. 2011; Cornelis, Heidmann et al. 2012; Dupressoir, Lavialle et al. 2012; Emera and Wagner 2012; Haig 2012; Malik 2012; Chuong 2013; Chuong, Rumi et al. 2013; Cornelis, Heidmann et al. 2013; Esnault, Cornelis et al. 2013; Lee, Nolan et al. 2013; Ruebner, Strissel et al. 2013; Cornelis, Vernochet et al. 2015; Pavlicev, Hiratsuka et al. 2015; Denner 2016)

 

 

REFERENCES

 

Abergel, C., M. Legendre, et al. (2015). "The rapidly expanding universe of giant viruses: Mimivirus, Pandoravirus, Pithovirus and Mollivirus." FEMS Microbiol Rev 39(6): 779-796. http://www.ncbi.nlm.nih.gov/pubmed/26391910.

Aherfi, S., P. Colson, et al. (2016). "Giant Viruses of Amoebas: An Update." Front Microbiol 7: 349. http://www.ncbi.nlm.nih.gov/pubmed/27047465.

Anand, T., B. C. Bera, et al. (2016). "Abundance of antibiotic resistance genes in environmental bacteriophages." J Gen Virol 97(12): 3458-3466. http://www.ncbi.nlm.nih.gov/pubmed/27902329.

Asher, R. J., N. Bennett, et al. (2009). "The new framework for understanding placental mammal evolution." Bioessays 31(8): 853-864. http://www.ncbi.nlm.nih.gov/pubmed/19582725.

Askora, A., T. Kawasaki, et al. (2017). "Lysogenic Conversion of the Phytopathogen Ralstonia solanacearum by the P2virus varphiRSY1." Front Microbiol 8: 2212. http://www.ncbi.nlm.nih.gov/pubmed/29184542.

Atomi, H., T. Imanaka, et al. (2012). "Overview of the genetic tools in the Archaea." Front Microbiol 3: 337. http://www.ncbi.nlm.nih.gov/pubmed/23060865.

Balcazar, J. L. (2014). "Bacteriophages as vehicles for antibiotic resistance genes in the environment." PLoS Pathog 10(7): e1004219. http://www.ncbi.nlm.nih.gov/pubmed/25078987.

Belyi, V. A., A. J. Levine, et al. (2010). "Unexpected inheritance: multiple integrations of ancient bornavirus and ebolavirus/marburgvirus sequences in vertebrate genomes." PLoS Pathog 6(7): e1001030. http://www.ncbi.nlm.nih.gov/pubmed/20686665.

Bieche, I., A. Laurent, et al. (2003). "Placenta-specific INSL4 expression is mediated by a human endogenous retrovirus element." Biol Reprod 68(4): 1422-1429. http://www.ncbi.nlm.nih.gov/pubmed/12606452.

Black, S. G., F. Arnaud, et al. (2010). "Endogenous retroviruses in trophoblast differentiation and placental development." Am J Reprod Immunol 64(4): 255-264. http://www.ncbi.nlm.nih.gov/pubmed/20528833.

Blackburn, D. G. (1995). "Saltationist and punctuated equilibrium models for the evolution of viviparity and placentation." Journal of Theoretical Biology 174(2): 199-216. http://www.ncbi.nlm.nih.gov/pubmed/7643614.

Blanc, G., L. Gallot-Lavallee, et al. (2015). "Provirophages in the Bigelowiella genome bear testimony to past encounters with giant viruses." Proc Natl Acad Sci U S A. http://www.ncbi.nlm.nih.gov/pubmed/26305943.

Blond, J. L., D. Lavillette, et al. (2000). "An envelope glycoprotein of the human endogenous retrovirus HERV-W is expressed in the human placenta and fuses cells expressing the type D mammalian retrovirus receptor." J Virol 74(7): 3321-3329. http://www.ncbi.nlm.nih.gov/pubmed/10708449.

Bobay, L. M., M. Touchon, et al. (2014). "Pervasive domestication of defective prophages by bacteria." Proc Natl Acad Sci U S A 111(33): 12127-12132. http://www.ncbi.nlm.nih.gov/pubmed/25092302.

Bonnaud, B., O. Bouton, et al. (2004). "Evidence of selection on the domesticated ERVWE1 env retroviral element involved in placentation." Mol Biol Evol 21(10): 1895-1901. http://www.ncbi.nlm.nih.gov/pubmed/15254254.

Bordenstein, S. R. and S. R. Bordenstein (2016). "Eukaryotic association module in phage WO genomes from Wolbachia." Nat Commun 7: 13155. http://www.ncbi.nlm.nih.gov/pubmed/27727237.

Bordenstein, S. R., M. L. Marshall, et al. (2006). "The tripartite associations between bacteriophage, Wolbachia, and arthropods." PLoS Pathog 2(5): e43. http://www.ncbi.nlm.nih.gov/pubmed/16710453.

Boughalmi, M., H. Saadi, et al. (2013). "High-throughput isolation of giant viruses of the Mimiviridae and Marseilleviridae families in the Tunisian environment." Environ Microbiol 15(7): 2000-2007. http://www.ncbi.nlm.nih.gov/pubmed/23298151.

Boyer, M., N. Yutin, et al. (2009). "Giant Marseillevirus highlights the role of amoebae as a melting pot in emergence of chimeric microorganisms." Proc Natl Acad Sci U S A 106(51): 21848-21853. http://www.ncbi.nlm.nih.gov/pubmed/20007369.

Brussow, H., C. Canchaya, et al. (2004). "Phages and the evolution of bacterial pathogens: from genomic rearrangements to lysogenic conversion." Microbiol Mol Biol Rev 68(3): 560-602. http://www.ncbi.nlm.nih.gov/pubmed/15353570.

Carter, A. M. and A. Mess (2007). "Evolution of the placenta in eutherian mammals." Placenta 28(4): 259-262. http://www.ncbi.nlm.nih.gov/pubmed/16780944.

Casas, V. and S. Maloy (2011). "Role of bacteriophage-encoded exotoxins in the evolution of bacterial pathogens." Future Microbiol 6(12): 1461-1473. http://www.ncbi.nlm.nih.gov/pubmed/22122442.

Casas, V., J. Miyake, et al. (2006). "Widespread occurrence of phage-encoded exotoxin genes in terrestrial and aquatic environments in Southern California." FEMS Microbiol Lett 261(1): 141-149. http://www.ncbi.nlm.nih.gov/pubmed/16842371.

Chuong, E. B. (2013). "Retroviruses facilitate the rapid evolution of the mammalian placenta." Bioessays 35(10): 853-861. http://www.ncbi.nlm.nih.gov/pubmed/23873343.

Chuong, E. B., M. A. Rumi, et al. (2013). "Endogenous retroviruses function as species-specific enhancer elements in the placenta." Nat Genet 45(3): 325-329. http://www.ncbi.nlm.nih.gov/pubmed/23396136.

Claverie, J. M. (2013). "Giant virus in the sea: Extending the realm of Megaviridae to Viridiplantae." Commun Integr Biol 6(6): e25685. http://www.ncbi.nlm.nih.gov/pubmed/24563700.

Claverie, J. M. and C. Abergel (2013). "Open questions about giant viruses." Adv Virus Res 85: 25-56. http://www.ncbi.nlm.nih.gov/pubmed/23439023.

Claverie, J. M., R. Grzela, et al. (2009). "Mimivirus and Mimiviridae: giant viruses with an increasing number of potential hosts, including corals and sponges." J Invertebr Pathol 101(3): 172-180. http://www.ncbi.nlm.nih.gov/pubmed/19457438.

Claverys, J. P., M. Prudhomme, et al. (2006). "Induction of competence regulons as a general response to stress in gram-positive bacteria." Annu Rev Microbiol 60: 451-475. http://www.ncbi.nlm.nih.gov/pubmed/16771651.

Colomer-Lluch, M., J. Jofre, et al. (2011). "Antibiotic resistance genes in the bacteriophage DNA fraction of environmental samples." PLoS One 6(3): e17549. http://www.ncbi.nlm.nih.gov/pubmed/21390233.

Colson, P., B. La Scola, et al. (2017). "Mimivirus: leading the way in the discovery of giant viruses of amoebae." Nat Rev Microbiol 15(4): 243-254. http://www.ncbi.nlm.nih.gov/pubmed/28239153.

Colson, P., I. Pagnier, et al. (2013). ""Marseilleviridae", a new family of giant viruses infecting amoebae." Arch Virol 158(4): 915-920. http://www.ncbi.nlm.nih.gov/pubmed/23188494.

Colson, P. and D. Raoult (2010). "Gene repertoire of amoeba-associated giant viruses." Intervirology 53(5): 330-343. http://www.ncbi.nlm.nih.gov/pubmed/20551685.

Cornelis, G., O. Heidmann, et al. (2012). "Ancestral capture of syncytin-Car1, a fusogenic endogenous retroviral envelope gene involved in placentation and conserved in Carnivora." Proc Natl Acad Sci U S A 109(7): E432-441. http://www.ncbi.nlm.nih.gov/pubmed/22308384.

Cornelis, G., O. Heidmann, et al. (2013). "Captured retroviral envelope syncytin gene associated with the unique placental structure of higher ruminants." Proc Natl Acad Sci U S A 110(9): E828-837. http://www.ncbi.nlm.nih.gov/pubmed/23401540.

Cornelis, G., C. Vernochet, et al. (2015). "Retroviral envelope gene captures and syncytin exaptation for placentation in marsupials." Proc Natl Acad Sci U S A 112(5): E487-496. http://www.ncbi.nlm.nih.gov/pubmed/25605903.

Das, B. (2014). "Mechanistic insights into filamentous phage integration in Vibrio cholerae." Front Microbiol 5: 650. http://www.ncbi.nlm.nih.gov/pubmed/25506341.

Davies, E. V., C. E. James, et al. (2016). "Temperate phages enhance pathogen fitness in chronic lung infection." ISME J 10(10): 2553-2555. http://www.ncbi.nlm.nih.gov/pubmed/27070941.

Degnan, P. H. and N. A. Moran (2008). "Diverse phage-encoded toxins in a protective insect endosymbiont." Appl Environ Microbiol 74(21): 6782-6791. http://www.ncbi.nlm.nih.gov/pubmed/18791000.

Denner, J. (2016). "Expression and function of endogenous retroviruses in the placenta." APMIS 124(1-2): 31-43. http://www.ncbi.nlm.nih.gov/pubmed/26818260.

Desnues, C., B. La Scola, et al. (2012). "Provirophages and transpovirons as the diverse mobilome of giant viruses." Proc Natl Acad Sci U S A 109(44): 18078-18083. http://www.ncbi.nlm.nih.gov/pubmed/23071316.

Dunlap, K. A., M. Palmarini, et al. (2006). "Endogenous retroviruses regulate periimplantation placental growth and differentiation." Proc Natl Acad Sci U S A 103(39): 14390-14395. http://www.ncbi.nlm.nih.gov/pubmed/16980413.

Dupressoir, A., C. Lavialle, et al. (2012). "From ancestral infectious retroviruses to bona fide cellular genes: role of the captured syncytins in placentation." Placenta 33(9): 663-671. http://www.ncbi.nlm.nih.gov/pubmed/22695103.

Dupressoir, A., G. Marceau, et al. (2005). "Syncytin-A and syncytin-B, two fusogenic placenta-specific murine envelope genes of retroviral origin conserved in Muridae." Proc Natl Acad Sci U S A 102(3): 725-730. http://www.ncbi.nlm.nih.gov/pubmed/15644441.

Dupressoir, A., C. Vernochet, et al. (2009). "Syncytin-A knockout mice demonstrate the critical role in placentation of a fusogenic, endogenous retrovirus-derived, envelope gene." Proc Natl Acad Sci U S A 106(29): 12127-12132. http://www.ncbi.nlm.nih.gov/pubmed/19564597.

Dupressoir, A., C. Vernochet, et al. (2011). "A pair of co-opted retroviral envelope syncytin genes is required for formation of the two-layered murine placental syncytiotrophoblast." Proc Natl Acad Sci U S A 108(46): E1164-1173. http://www.ncbi.nlm.nih.gov/pubmed/22032925.

Durruthy-Durruthy, J., V. Sebastiano, et al. (2016). "The primate-specific noncoding RNA HPAT5 regulates pluripotency during human preimplantation development and nuclear reprogramming." Nat Genet 48(1): 44-52. http://www.ncbi.nlm.nih.gov/pubmed/26595768.

Eichhorn, I., K. Heidemanns, et al. (2018). "Lysogenic conversion of atypical enteropathogenic Escherichia coli (aEPEC) from human, murine, and bovine origin with bacteriophage Phi3538 Deltastx2::cat proves their enterohemorrhagic E. coli (EHEC) progeny." Int J Med Microbiol 308(7): 890-898. http://www.ncbi.nlm.nih.gov/pubmed/29937391.

Emera, D. and G. P. Wagner (2012). "Transposable element recruitments in the mammalian placenta: impacts and mechanisms." Brief Funct Genomics 11(4): 267-276. http://www.ncbi.nlm.nih.gov/pubmed/22753775.

Esnault, C., G. Cornelis, et al. (2013). "Differential evolutionary fate of an ancestral primate endogenous retrovirus envelope gene, the EnvV syncytin, captured for a function in placentation." PLoS Genet 9(3): e1003400. http://www.ncbi.nlm.nih.gov/pubmed/23555306.

Filee, J. (2015). "Genomic comparison of closely related Giant Viruses supports an accordion-like model of evolution." Front Microbiol 6: 593. http://www.ncbi.nlm.nih.gov/pubmed/26136734.

Filee, J. and M. Chandler (2010). "Gene exchange and the origin of giant viruses." Intervirology 53(5): 354-361. http://www.ncbi.nlm.nih.gov/pubmed/20551687.

Filée, J. and M. Chandler (2012). Unpacking the Baggage: Origin and Evolution of Giant Viruses. Viruses: Essential Agents of Life. G. Witzany. Dordrecht, Springer: 203-216. .

Filee, J., P. Siguier, et al. (2007). "I am what I eat and I eat what I am: acquisition of bacterial genes by giant viruses." Trends Genet 23(1): 10-15. http://www.ncbi.nlm.nih.gov/pubmed/17109990.

Fischer, M. G., M. J. Allen, et al. (2010). "Giant virus with a remarkable complement of genes infects marine zooplankton." Proc Natl Acad Sci U S A 107(45): 19508-19513. http://www.ncbi.nlm.nih.gov/pubmed/20974979.

Fischer, M. G. and T. Hackl (2016). "Host genome integration and giant virus-induced reactivation of the virophage mavirus." Nature 540(7632): 288-291. http://www.ncbi.nlm.nih.gov/pubmed/27929021.

Fort, A., K. Hashimoto, et al. (2014). "Deep transcriptome profiling of mammalian stem cells supports a regulatory role for retrotransposons in pluripotency maintenance." Nat Genet 46(6): 558-566. http://www.ncbi.nlm.nih.gov/pubmed/24777452.

Forterre, P. (2010). "Giant viruses: conflicts in revisiting the virus concept." Intervirology 53(5): 362-378. http://www.ncbi.nlm.nih.gov/pubmed/20551688.

Fortier, L. C. (2017). "The Contribution of Bacteriophages to the Biology and Virulence of Pathogenic Clostridia." Adv Appl Microbiol 101: 169-200. http://www.ncbi.nlm.nih.gov/pubmed/29050666.

Fortier, L. C. (2018). "Bacteriophages Contribute to Shaping Clostridioides (Clostridium) difficile Species." Front Microbiol 9: 2033. http://www.ncbi.nlm.nih.gov/pubmed/30233520.

Fortier, L. C. and O. Sekulovic (2013). "Importance of prophages to evolution and virulence of bacterial pathogens." Virulence 4(5): 354-365. http://www.ncbi.nlm.nih.gov/pubmed/23611873.

Fridman, S., J. Flores-Uribe, et al. (2017). "A myovirus encoding both photosystem I and II proteins enhances cyclic electron flow in infected Prochlorococcus cells." Nat Microbiol 2(10): 1350-1357. http://www.ncbi.nlm.nih.gov/pubmed/28785078.

Fujino, K., M. Horie, et al. (2014). "Inhibition of Borna disease virus replication by an endogenous bornavirus-like element in the ground squirrel genome." Proc Natl Acad Sci U S A 111(36): 13175-13180. http://www.ncbi.nlm.nih.gov/pubmed/25157155.

Gimenez, J., C. Montgiraud, et al. (2009). "Comparative methylation of ERVWE1/syncytin-1 and other human endogenous retrovirus LTRs in placenta tissues." DNA Res 16(4): 195-211. http://www.ncbi.nlm.nih.gov/pubmed/19561344.

Goke, J., X. Lu, et al. (2015). "Dynamic transcription of distinct classes of endogenous retroviral elements marks specific populations of early human embryonic cells." Cell Stem Cell 16(2): 135-141. http://www.ncbi.nlm.nih.gov/pubmed/25658370.

Green, B. J., W. Y. Li, et al. (2000). "Mollusc-algal chloroplast endosymbiosis. Photosynthesis, thylakoid protein maintenance, and chloroplast gene expression continue for many months in the absence of the algal nucleus." Plant Physiol 124(1): 331-342. http://www.ncbi.nlm.nih.gov/pubmed/10982447.

Groman, N. B. (1953). "Evidence for the induced nature of the change from nontoxigenicity to toxigenicity in Corynebacterium diphtheriae as a result of exposure to specific bacteriophage." J Bacteriol 66(2): 184-191. http://www.ncbi.nlm.nih.gov/pubmed/13084557.

Groman, N. B. (1953). "The relation of bacteriophage to the change of Corynebacterium diphtheriae from avirulence to virulence." Science 117(3038): 297-299. http://www.ncbi.nlm.nih.gov/pubmed/13048666.

Groman, N. B. (1955). "Evidence for the active role of bacteriophage in the conversion of nontoxigenic Corynebacterium diphtheriae to toxin production." J Bacteriol 69(1): 9-15. http://www.ncbi.nlm.nih.gov/pubmed/13233160.

Groman, N. B. and M. Eaton (1955). "Genetic factors in Corynebacterium diphtheriae conversion." J Bacteriol 70(6): 637-640. http://www.ncbi.nlm.nih.gov/pubmed/13271307.

Groman, N. B. and R. Memmer (1958). "Lysogeny and conversion in mitis and mitis-like Corynebacterium diphtheriae." J Gen Microbiol 19(3): 634-644. http://www.ncbi.nlm.nih.gov/pubmed/13611206.

Haig, D. (2012). "Retroviruses and the placenta." Curr Biol 22(15): R609-613. http://www.ncbi.nlm.nih.gov/pubmed/22877784.

Harris, J. R. (1991). "The evolution of placental mammals." FEBS Lett 295(1-3): 3-4. http://www.ncbi.nlm.nih.gov/pubmed/1765162.

Harris, J. R. (1998). "Placental endogenous retrovirus (ERV): structural, functional, and evolutionary significance." Bioessays 20(4): 307-316. http://www.ncbi.nlm.nih.gov/pubmed/9619102.

Harrison, E. and M. A. Brockhurst (2017). "Ecological and Evolutionary Benefits of Temperate Phage: What Does or Doesn't Kill You Makes You Stronger." Bioessays 39(12). http://www.ncbi.nlm.nih.gov/pubmed/28983932.

He, T., H. Li, et al. (2017). "Deep-Sea Hydrothermal Vent Viruses Compensate for Microbial Metabolism in Virus-Host Interactions." MBio 8(4). http://www.ncbi.nlm.nih.gov/pubmed/28698277.

Heidmann, O., C. Vernochet, et al. (2009). "Identification of an endogenous retroviral envelope gene with fusogenic activity and placenta-specific expression in the rabbit: a new "syncytin" in a third order of mammals." Retrovirology 6: 107. http://www.ncbi.nlm.nih.gov/pubmed/19943933.

Horie, M., Y. Kobayashi, et al. (2013). "Comprehensive analysis of endogenous bornavirus-like elements in eukaryote genomes." Philos Trans R Soc Lond B Biol Sci 368(1626): 20120499. http://www.ncbi.nlm.nih.gov/pubmed/23938751.

Izsvak, Z., J. Wang, et al. (2016). "Pluripotency and the endogenous retrovirus HERVH: Conflict or serendipity?" Bioessays 38(1): 109-117. http://www.ncbi.nlm.nih.gov/pubmed/26735931.

Jeudy, S., C. Abergel, et al. (2012). "Translation in giant viruses: a unique mixture of bacterial and eukaryotic termination schemes." PLoS Genet 8(12): e1003122. http://www.ncbi.nlm.nih.gov/pubmed/23271980.

Kanda, R. K., M. Tristem, et al. (2013). "Exploring the effects of immunity and life history on the dynamics of an endogenous retrovirus." Philos Trans R Soc Lond B Biol Sci 368(1626): 20120505. http://www.ncbi.nlm.nih.gov/pubmed/23938754.

Katzourakis, A. and A. Aswad (2014). "The origins of giant viruses, virophages and their relatives in host genomes." BMC Biol 12: 51. http://www.ncbi.nlm.nih.gov/pubmed/25184667.

Kelley, D. and J. Rinn (2012). "Transposable elements reveal a stem cell-specific class of long noncoding RNAs." Genome Biol 13(11): R107. http://www.ncbi.nlm.nih.gov/pubmed/23181609.

Koonin, E. V., M. Krupovic, et al. (2015). "Evolution of double-stranded DNA viruses of eukaryotes: from bacteriophages to transposons to giant viruses." Ann N Y Acad Sci. http://www.ncbi.nlm.nih.gov/pubmed/25727355.

Kraushaar, B., J. A. Hammerl, et al. (2017). "Acquisition of virulence factors in livestock-associated MRSA: Lysogenic conversion of CC398 strains by virulence gene-containing phages." Sci Rep 7(1): 2004. http://www.ncbi.nlm.nih.gov/pubmed/28515479.

La Scola, B., S. Audic, et al. (2003). "A giant virus in amoebae." Science 299(5615): 2033. http://www.ncbi.nlm.nih.gov/pubmed/12663918.

Langat, D. K., P. M. Johnson, et al. (1998). "Immunohistochemical localization of retroviral-related antigens expressed in normal baboon placental villous tissue." J Med Primatol 27(6): 278-286. http://www.ncbi.nlm.nih.gov/pubmed/10203007.

Lee, A., A. Nolan, et al. (2013). "Identification of an ancient endogenous retrovirus, predating the divergence of the placental mammals." Philos Trans R Soc Lond B Biol Sci 368(1626): 20120503. http://www.ncbi.nlm.nih.gov/pubmed/23938752.

Lee, Y. D. and J. H. Park (2016). "Phage Conversion for beta-Lactam Antibiotic Resistance of Staphylococcus aureus from Foods." J Microbiol Biotechnol 26(2): 263-269. http://www.ncbi.nlm.nih.gov/pubmed/26562692.

Legendre, M., A. Lartigue, et al. (2015). "In-depth study of Mollivirus sibericum, a new 30,000-y-old giant virus infecting Acanthamoeba." Proc Natl Acad Sci U S A. http://www.ncbi.nlm.nih.gov/pubmed/26351664.

LePage, D. P., J. A. Metcalf, et al. (2017). "Prophage WO genes recapitulate and enhance Wolbachia-induced cytoplasmic incompatibility." Nature. http://www.ncbi.nlm.nih.gov/pubmed/28241146.

Lindsey, A. R. I., T. Bhattacharya, et al. (2018). "Conflict in the Intracellular Lives of Endosymbionts and Viruses: A Mechanistic Look at Wolbachia-Mediated Pathogen-blocking." Viruses 10(4). http://www.ncbi.nlm.nih.gov/pubmed/29561780.

Lipscomb, G. L., K. Stirrett, et al. (2011). "Natural competence in the hyperthermophilic archaeon Pyrococcus furiosus facilitates genetic manipulation: construction of markerless deletions of genes encoding the two cytoplasmic hydrogenases." Appl Environ Microbiol 77(7): 2232-2238. http://www.ncbi.nlm.nih.gov/pubmed/21317259.

Lu, X., F. Sachs, et al. (2014). "The retrovirus HERVH is a long noncoding RNA required for human embryonic stem cell identity." Nat Struct Mol Biol. http://www.ncbi.nlm.nih.gov/pubmed/24681886.

Lyden, T. W., P. M. Johnson, et al. (1994). "Ultrastructural characterization of endogenous retroviral particles isolated from normal human placentas." Biol Reprod 51(1): 152-157. http://www.ncbi.nlm.nih.gov/pubmed/7522592.

Macaulay, E. C., R. J. Weeks, et al. (2011). "Hypomethylation of functional retrotransposon-derived genes in the human placenta." Mamm Genome 22(11-12): 722-735. http://www.ncbi.nlm.nih.gov/pubmed/21874386.

Macfarlan, T. S., W. D. Gifford, et al. (2012). "Embryonic stem cell potency fluctuates with endogenous retrovirus activity." Nature 487(7405): 57-63. http://www.ncbi.nlm.nih.gov/pubmed/22722858.

Malassine, A., S. Blaise, et al. (2007). "Expression of the fusogenic HERV-FRD Env glycoprotein (syncytin 2) in human placenta is restricted to villous cytotrophoblastic cells." Placenta 28(2-3): 185-191. http://www.ncbi.nlm.nih.gov/pubmed/16714059.

Malik, H. S. (2012). "Retroviruses push the envelope for mammalian placentation." Proc Natl Acad Sci U S A 109(7): 2184-2185. http://www.ncbi.nlm.nih.gov/pubmed/22308481.

Mallet, F., O. Bouton, et al. (2004). "The endogenous retroviral locus ERVWE1 is a bona fide gene involved in hominoid placental physiology." Proc Natl Acad Sci U S A 101(6): 1731-1736. http://www.ncbi.nlm.nih.gov/pubmed/14757826.

Mangeney, M., M. Renard, et al. (2007). "Placental syncytins: Genetic disjunction between the fusogenic and immunosuppressive activity of retroviral envelope proteins." Proc Natl Acad Sci U S A 104(51): 20534-20539. http://www.ncbi.nlm.nih.gov/pubmed/18077339.

Maumus, F., A. Epert, et al. (2014). "Plant genomes enclose footprints of past infections by giant virus relatives." Nat Commun 5: 4268. http://www.ncbi.nlm.nih.gov/pubmed/24969138.

Merhej, V. and D. Raoult (2012). "Rhizome of life, catastrophes, sequence exchanges, gene creations, and giant viruses: how microbial genomics challenges Darwin." Front Cell Infect Microbiol 2: 113. http://www.ncbi.nlm.nih.gov/pubmed/22973559.

Mess, A. and A. M. Carter (2007). "Evolution of the placenta during the early radiation of placental mammals." Comp Biochem Physiol A Mol Integr Physiol 148(4): 769-779. http://www.ncbi.nlm.nih.gov/pubmed/17347003.

Mi, S., X. Lee, et al. (2000). "Syncytin is a captive retroviral envelope protein involved in human placental morphogenesis." Nature 403(6771): 785-789. http://www.ncbi.nlm.nih.gov/pubmed/10693809.

Mitrikeski, P. T. (2015). "Ecologically driven competence for exogenous DNA uptake in yeast." Curr Microbiol 70(6): 883-893. http://www.ncbi.nlm.nih.gov/pubmed/25824091.

Moliner, C., P. E. Fournier, et al. (2010). "Genome analysis of microorganisms living in amoebae reveals a melting pot of evolution." FEMS Microbiol Rev 34(3): 281-294. http://www.ncbi.nlm.nih.gov/pubmed/20132312.

Mondy, W. L. and S. K. Pierce (2003). "Apoptotic-like morphology is associated with annual synchronized death in kleptoplastic sea slugs (Elysia chlorotica)." Invertebr. Biol. 122: 126–137. .

Moran, N. A., P. H. Degnan, et al. (2005). "The players in a mutualistic symbiosis: insects, bacteria, viruses, and virulence genes." Proc Natl Acad Sci U S A 102(47): 16919-16926. http://www.ncbi.nlm.nih.gov/pubmed/16195380.

Moreira, D. and C. Brochier-Armanet (2008). "Giant viruses, giant chimeras: the multiple evolutionary histories of Mimivirus genes." BMC Evol Biol 8: 12. http://www.ncbi.nlm.nih.gov/pubmed/18205905.

Muir, A., A. Lever, et al. (2004). "Expression and functions of human endogenous retroviruses in the placenta: an update." Placenta 25 Suppl A: S16-25. http://www.ncbi.nlm.nih.gov/pubmed/15033302.

Mujer, C. V., D. L. Andrews, et al. (1996). "Chloroplast genes are expressed during intracellular symbiotic association of Vaucheria litorea plastids with the sea slug Elysia chlorotica." Proc Natl Acad Sci U S A 93(22): 12333-12338. http://www.ncbi.nlm.nih.gov/pubmed/8901581.

Muniesa, M., M. Colomer-Lluch, et al. (2013). "Potential impact of environmental bacteriophages in spreading antibiotic resistance genes." Future Microbiol 8(6): 739-751. http://www.ncbi.nlm.nih.gov/pubmed/23701331.

Nasir, A., K. M. Kim, et al. (2012). "Giant viruses coexisted with the cellular ancestors and represent a distinct supergroup along with superkingdoms Archaea, Bacteria and Eukarya." BMC Evol Biol 12: 156. http://www.ncbi.nlm.nih.gov/pubmed/22920653.

Noorali, S., I. C. Rotar, et al. (2009). "Role of HERV-W syncytin-1 in placentation and maintenance of human pregnancy." Appl Immunohistochem Mol Morphol 17(4): 319-328. http://www.ncbi.nlm.nih.gov/pubmed/19407656.

Ogata, H. and J. M. Claverie (2007). "Unique genes in giant viruses: regular substitution pattern and anomalously short size." Genome Res 17(9): 1353-1361. http://www.ncbi.nlm.nih.gov/pubmed/17652424.

Parrish, N. F., K. Fujino, et al. (2015). "piRNAs derived from ancient viral processed pseudogenes as transgenerational sequence-specific immune memory in mammals." Rna 21(10): 1691-1703. http://www.ncbi.nlm.nih.gov/pubmed/26283688.

Pavlicev, M., K. Hiratsuka, et al. (2015). "Detecting endogenous retrovirus-driven tissue-specific gene transcription." Genome Biol Evol 7(4): 1082-1097. http://www.ncbi.nlm.nih.gov/pubmed/25767249.

Peaston, A. E., A. V. Evsikov, et al. (2004). "Retrotransposons regulate host genes in mouse oocytes and preimplantation embryos." Dev Cell 7(4): 597-606. http://www.ncbi.nlm.nih.gov/pubmed/15469847.

Piacente, F., C. De Castro, et al. (2014). "Giant virus Megavirus chilensis encodes the biosynthetic pathway for uncommon acetamido sugars." J Biol Chem 289(35): 24428-24439. http://www.ncbi.nlm.nih.gov/pubmed/25035429.

Pierce, S. K., S. E. Massey, et al. (2003). "Horizontal transfer of functional nuclear genes between multicellular organisms." Biol Bull 204(3): 237-240. http://www.ncbi.nlm.nih.gov/pubmed/12807700.

Pierce, S. K., T. K. Maugel, et al. (1999). "Annual Viral Expression in a Sea Slug Population: Life Cycle Control and Symbiotic Chloroplast Maintenance." Biol Bull 197(1): 1-6. http://www.ncbi.nlm.nih.gov/pubmed/28296505.

Prudhomme, S., G. Oriol, et al. (2004). "A retroviral promoter and a cellular enhancer define a bipartite element which controls env ERVWE1 placental expression." J Virol 78(22): 12157-12168. http://www.ncbi.nlm.nih.gov/pubmed/15507602.

Puxty, R. J., A. D. Millard, et al. (2015). "Shedding new light on viral photosynthesis." Photosynth Res 126(1): 71-97. http://www.ncbi.nlm.nih.gov/pubmed/25381655.

Raoult, D. (2010). "Giant viruses from amoeba in a post-Darwinist viral world." Intervirology 53(5): 251-253. http://www.ncbi.nlm.nih.gov/pubmed/20551676.

Raoult, D. and M. Boyer (2010). "Amoebae as genitors and reservoirs of giant viruses." Intervirology 53(5): 321-329. http://www.ncbi.nlm.nih.gov/pubmed/20551684.

Rawn, S. M. and J. C. Cross (2008). "The evolution, regulation, and function of placenta-specific genes." Annu Rev Cell Dev Biol 24: 159-181. http://www.ncbi.nlm.nih.gov/pubmed/18616428.

Rigvava, S., I. Kusradze, et al. (2018). "NEW TEMPERATE ENTEROCOCCUS PHAGE VB_GEC_EFS_2 WITH POTENTIAL OF LYSOGENIC CONVERSION." Georgian Med News(274): 158-164. http://www.ncbi.nlm.nih.gov/pubmed/29461246.

Roszniowski, B., S. McClean, et al. (2018). "Burkholderia cenocepacia Prophages-Prevalence, Chromosome Location and Major Genes Involved." Viruses 10(6). http://www.ncbi.nlm.nih.gov/pubmed/29857552.

Rote, N. S., S. Chakrabarti, et al. (2004). "The role of human endogenous retroviruses in trophoblast differentiation and placental development." Placenta 25(8-9): 673-683. http://www.ncbi.nlm.nih.gov/pubmed/15450384.

Ruebner, M., P. L. Strissel, et al. (2013). "Reduced syncytin-1 expression levels in placental syndromes correlates with epigenetic hypermethylation of the ERVW-1 promoter region." PLoS One 8(2): e56145. http://www.ncbi.nlm.nih.gov/pubmed/23457515.

Santoni, F. A., J. Guerra, et al. (2012). "HERV-H RNA is abundant in human embryonic stem cells and a precise marker for pluripotency." Retrovirology 9: 111. http://www.ncbi.nlm.nih.gov/pubmed/23253934.

Saucedo-Mora, M. A., P. Castaneda-Tamez, et al. (2017). "Selection of Functional Quorum Sensing Systems by Lysogenic Bacteriophages in Pseudomonas aeruginosa." Front Microbiol 8: 1669. http://www.ncbi.nlm.nih.gov/pubmed/28912771.

Schroeder, D. C., Y. Park, et al. (2009). "Genomic analysis of the smallest giant virus--Feldmannia sp. virus 158." Virology 384(1): 223-232. http://www.ncbi.nlm.nih.gov/pubmed/19054537.

Seitz, P. and M. Blokesch (2013). "Cues and regulatory pathways involved in natural competence and transformation in pathogenic and environmental Gram-negative bacteria." FEMS Microbiol Rev 37(3): 336-363. http://www.ncbi.nlm.nih.gov/pubmed/22928673.

Shterzer, N. and I. Mizrahi (2015). "The animal gut as a melting pot for horizontal gene transfer." Can J Microbiol 61(9): 603-605. http://www.ncbi.nlm.nih.gov/pubmed/26053634.

Slimani, M., I. Pagnier, et al. (2013). "Amoebae as battlefields for bacteria, giant viruses, and virophages." J Virol 87(8): 4783-4785. http://www.ncbi.nlm.nih.gov/pubmed/23388714.

Stoye, J. P. (2009). "Proviral protein provides placental function." Proc Natl Acad Sci U S A 106(29): 11827-11828. http://www.ncbi.nlm.nih.gov/pubmed/19617545.

Strand, M. R. and G. R. Burke (2013). "Polydnavirus-wasp associations: evolution, genome organization, and function." Curr Opin Virol 3(5): 587-594. http://www.ncbi.nlm.nih.gov/pubmed/23816391.

Sun, C., C. Feschotte, et al. (2015). "DNA transposons have colonized the genome of the giant virus Pandoravirus salinus." BMC Biol 13: 38. http://www.ncbi.nlm.nih.gov/pubmed/26067596.

Thomas, V. and G. Greub (2010). "Amoeba/amoebal symbiont genetic transfers: lessons from giant virus neighbours." Intervirology 53(5): 254-267. http://www.ncbi.nlm.nih.gov/pubmed/20551677.

Touchon, M., A. Bernheim, et al. (2016). "Genetic and life-history traits associated with the distribution of prophages in bacteria." ISME J 10(11): 2744-2754. http://www.ncbi.nlm.nih.gov/pubmed/27015004.

Vaca-Pacheco, S., G. L. Paniagua-Contreras, et al. (1999). "The clinically isolated FIZ15 bacteriophage causes lysogenic conversion in Pseudomonas aeruginosa PAO1." Curr Microbiol 38(4): 239-243. http://www.ncbi.nlm.nih.gov/pubmed/10069861.

Van Etten, J. L. and R. H. Meints (1999). "Giant viruses infecting algae." Annu Rev Microbiol 53: 447-494. http://www.ncbi.nlm.nih.gov/pubmed/10547698.

Venables, P. J., S. M. Brookes, et al. (1995). "Abundance of an endogenous retroviral envelope protein in placental trophoblasts suggests a biological function." Virology 211(2): 589-592. http://www.ncbi.nlm.nih.gov/pubmed/7645262.

Waldor, M. K. and J. J. Mekalanos (1996). "Lysogenic conversion by a filamentous phage encoding cholera toxin." Science 272(5270): 1910-1914. http://www.ncbi.nlm.nih.gov/pubmed/8658163.

Wang, H., B. Pang, et al. (2015). "The Hybrid Pre-CTXPhi-RS1 Prophage Genome and Its Regulatory Function in Environmental Vibrio cholerae O1 Strains." Appl Environ Microbiol 81(20): 7171-7177. http://www.ncbi.nlm.nih.gov/pubmed/26253680.

Wang, Z. and M. Wu (2017). "Comparative Genomic Analysis of Acanthamoeba Endosymbionts Highlights the Role of Amoebae as a "Melting Pot" Shaping the Rickettsiales Evolution." Genome Biol Evol 9(11): 3214-3224. http://www.ncbi.nlm.nih.gov/pubmed/29177480.

Webb, B., T. Fisher, et al. (2009). "The natural genetic engineering of polydnaviruses." Ann N Y Acad Sci 1178: 146-156. http://www.ncbi.nlm.nih.gov/pubmed/19845635.

Wilhelm, S. W., S. R. Coy, et al. (2016). "Standing on the Shoulders of Giant Viruses: Five Lessons Learned about Large Viruses Infecting Small Eukaryotes and the Opportunities They Create." PLoS Pathog 12(8): e1005752. http://www.ncbi.nlm.nih.gov/pubmed/27559742.

Yoosuf, N., N. Yutin, et al. (2012). "Related giant viruses in distant locations and different habitats: Acanthamoeba polyphaga moumouvirus represents a third lineage of the Mimiviridae that is close to the megavirus lineage." Genome Biol Evol 4(12): 1324-1330. http://www.ncbi.nlm.nih.gov/pubmed/23221609.

Yutin, N., P. Colson, et al. (2013). "Mimiviridae: clusters of orthologous genes, reconstruction of gene repertoire evolution and proposed expansion of the giant virus family." Virol J 10: 106. http://www.ncbi.nlm.nih.gov/pubmed/23557328.

Yutin, N. and E. V. Koonin (2012). "Proteorhodopsin genes in giant viruses." Biol Direct 7(1): 34. http://www.ncbi.nlm.nih.gov/pubmed/23036091.

Yutin, N., Y. I. Wolf, et al. (2014). "Origin of giant viruses from smaller DNA viruses not from a fourth domain of cellular life." Virology 466-467: 38-52. http://www.ncbi.nlm.nih.gov/pubmed/25042053.