Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection
Parasites and hosts can experience oscillatory cycles, where the densities of these interacting species dynamically fluctuate through time. Viruses with different replication strategies can also interact to produce cyclical dynamics. Frequent cellular co-infection can select for defective-interferin...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2016-03-01
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| Series: | Frontiers in Microbiology |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00370/full |
| _version_ | 1811241400264556544 |
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| author | Elizabeth S.C.P. Williams Nadya M. Morales Brian R. Wasik Vesna eBrusic Sean P.J. Whelan Paul E Turner |
| author_facet | Elizabeth S.C.P. Williams Nadya M. Morales Brian R. Wasik Vesna eBrusic Sean P.J. Whelan Paul E Turner |
| author_sort | Elizabeth S.C.P. Williams |
| collection | DOAJ |
| description | Parasites and hosts can experience oscillatory cycles, where the densities of these interacting species dynamically fluctuate through time. Viruses with different replication strategies can also interact to produce cyclical dynamics. Frequent cellular co-infection can select for defective-interfering particles (DIPs): cheater viruses with shortened genomes that interfere with intracellular replication of full-length (ordinary) viruses. DIPs are positively selected when rare because they out-replicate ordinary viruses during co-infection, but DIPs are negatively selected when common because ordinary viruses become unavailable for intracellular exploitation via cheating. Here we tested whether oscillatory dynamics of ordinary viruses were similar across independently evolved populations of vesicular stomatitis virus (VSV). Results showed identical cyclical dynamics across populations in the first 10 experimental passages, which transitioned to repeatable dampened oscillations by passage 20. Genomic analyses revealed parallel molecular substitutions across populations, particularly novel mutations that became dominant by passage 10. Our study showed that oscillatory dynamics and molecular evolution of interacting viruses were highly repeatable in VSV populations passaged under frequent co-infection. Furthermore, our data suggested that frequent co-infection with DIPs caused lowered performance of full-length viruses, by reducing their population densities by orders of magnitude compared to reproduction of ordinary viruses during strictly clonal infections. |
| first_indexed | 2024-04-12T13:34:41Z |
| format | Article |
| id | doaj.art-829762334748491d84b59bc4f8a25ed1 |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-12T13:34:41Z |
| publishDate | 2016-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-829762334748491d84b59bc4f8a25ed12022-12-22T03:31:02ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2016-03-01710.3389/fmicb.2016.00370162598Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infectionElizabeth S.C.P. Williams0Nadya M. Morales1Brian R. Wasik2Vesna eBrusic3Sean P.J. Whelan4Paul E Turner5Yale UniversityYale UniversityYale UniversityHarvard Medical SchoolHarvard Medical SchoolYale UniversityParasites and hosts can experience oscillatory cycles, where the densities of these interacting species dynamically fluctuate through time. Viruses with different replication strategies can also interact to produce cyclical dynamics. Frequent cellular co-infection can select for defective-interfering particles (DIPs): cheater viruses with shortened genomes that interfere with intracellular replication of full-length (ordinary) viruses. DIPs are positively selected when rare because they out-replicate ordinary viruses during co-infection, but DIPs are negatively selected when common because ordinary viruses become unavailable for intracellular exploitation via cheating. Here we tested whether oscillatory dynamics of ordinary viruses were similar across independently evolved populations of vesicular stomatitis virus (VSV). Results showed identical cyclical dynamics across populations in the first 10 experimental passages, which transitioned to repeatable dampened oscillations by passage 20. Genomic analyses revealed parallel molecular substitutions across populations, particularly novel mutations that became dominant by passage 10. Our study showed that oscillatory dynamics and molecular evolution of interacting viruses were highly repeatable in VSV populations passaged under frequent co-infection. Furthermore, our data suggested that frequent co-infection with DIPs caused lowered performance of full-length viruses, by reducing their population densities by orders of magnitude compared to reproduction of ordinary viruses during strictly clonal infections.http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00370/fullexperimental evolutionRNA virusCo-Evolutionvirus ecologycheating behaviorEcological dynamics |
| spellingShingle | Elizabeth S.C.P. Williams Nadya M. Morales Brian R. Wasik Vesna eBrusic Sean P.J. Whelan Paul E Turner Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection Frontiers in Microbiology experimental evolution RNA virus Co-Evolution virus ecology cheating behavior Ecological dynamics |
| title | Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection |
| title_full | Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection |
| title_fullStr | Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection |
| title_full_unstemmed | Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection |
| title_short | Repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co-infection |
| title_sort | repeatable population dynamics among vesicular stomatitis virus lineages evolved under high co infection |
| topic | experimental evolution RNA virus Co-Evolution virus ecology cheating behavior Ecological dynamics |
| url | http://journal.frontiersin.org/Journal/10.3389/fmicb.2016.00370/full |
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