Cargando…
Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity
Obligate symbioses occur when organisms require symbiotic relationships to survive. Some parasitic wasps of caterpillars possess obligate mutualistic viruses called “polydnaviruses.” Along with eggs, wasps inject polydnavirus inside their caterpillar hosts where the hatching larvae develop inside th...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
National Academy of Sciences
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5960290/ https://www.ncbi.nlm.nih.gov/pubmed/29712862 http://dx.doi.org/10.1073/pnas.1717934115 |
_version_ | 1783324565306343424 |
---|---|
author | Tan, Ching-Wen Peiffer, Michelle Hoover, Kelli Rosa, Cristina Acevedo, Flor E. Felton, Gary W. |
author_facet | Tan, Ching-Wen Peiffer, Michelle Hoover, Kelli Rosa, Cristina Acevedo, Flor E. Felton, Gary W. |
author_sort | Tan, Ching-Wen |
collection | PubMed |
description | Obligate symbioses occur when organisms require symbiotic relationships to survive. Some parasitic wasps of caterpillars possess obligate mutualistic viruses called “polydnaviruses.” Along with eggs, wasps inject polydnavirus inside their caterpillar hosts where the hatching larvae develop inside the caterpillar. Polydnaviruses suppress the immune systems of their caterpillar hosts, which enables egg hatch and wasp larval development. It is unknown whether polydnaviruses also manipulate the salivary proteins of the caterpillar, which may affect the elicitation of plant defenses during feeding by the caterpillar. Here, we show that a polydnavirus of the parasitoid Microplitis croceipes, and not the parasitoid larva itself, drives the regulation of salivary enzymes of the caterpillar Helicoverpa zea that are known to elicit tomato plant-defense responses to herbivores. The polydnavirus suppresses glucose oxidase, which is a primary plant-defense elicitor in the saliva of the H. zea caterpillar. By suppressing plant defenses, the polydnavirus allows the caterpillar to grow at a faster rate, thus improving the host suitability for the parasitoid. Remarkably, polydnaviruses manipulate the phenotypes of the wasp, caterpillar, and host plant, demonstrating that polydnaviruses play far more prominent roles in shaping plant–herbivore interactions than ever considered. |
format | Online Article Text |
id | pubmed-5960290 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | National Academy of Sciences |
record_format | MEDLINE/PubMed |
spelling | pubmed-59602902018-05-21 Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity Tan, Ching-Wen Peiffer, Michelle Hoover, Kelli Rosa, Cristina Acevedo, Flor E. Felton, Gary W. Proc Natl Acad Sci U S A Biological Sciences Obligate symbioses occur when organisms require symbiotic relationships to survive. Some parasitic wasps of caterpillars possess obligate mutualistic viruses called “polydnaviruses.” Along with eggs, wasps inject polydnavirus inside their caterpillar hosts where the hatching larvae develop inside the caterpillar. Polydnaviruses suppress the immune systems of their caterpillar hosts, which enables egg hatch and wasp larval development. It is unknown whether polydnaviruses also manipulate the salivary proteins of the caterpillar, which may affect the elicitation of plant defenses during feeding by the caterpillar. Here, we show that a polydnavirus of the parasitoid Microplitis croceipes, and not the parasitoid larva itself, drives the regulation of salivary enzymes of the caterpillar Helicoverpa zea that are known to elicit tomato plant-defense responses to herbivores. The polydnavirus suppresses glucose oxidase, which is a primary plant-defense elicitor in the saliva of the H. zea caterpillar. By suppressing plant defenses, the polydnavirus allows the caterpillar to grow at a faster rate, thus improving the host suitability for the parasitoid. Remarkably, polydnaviruses manipulate the phenotypes of the wasp, caterpillar, and host plant, demonstrating that polydnaviruses play far more prominent roles in shaping plant–herbivore interactions than ever considered. National Academy of Sciences 2018-05-15 2018-04-30 /pmc/articles/PMC5960290/ /pubmed/29712862 http://dx.doi.org/10.1073/pnas.1717934115 Text en Copyright © 2018 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by-nc-nd/4.0/ This open access article is distributed under Creative Commons Attribution-NonCommercial-NoDerivatives License 4.0 (CC BY-NC-ND) (https://creativecommons.org/licenses/by-nc-nd/4.0/) . |
spellingShingle | Biological Sciences Tan, Ching-Wen Peiffer, Michelle Hoover, Kelli Rosa, Cristina Acevedo, Flor E. Felton, Gary W. Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
title | Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
title_full | Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
title_fullStr | Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
title_full_unstemmed | Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
title_short | Symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
title_sort | symbiotic polydnavirus of a parasite manipulates caterpillar and plant immunity |
topic | Biological Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5960290/ https://www.ncbi.nlm.nih.gov/pubmed/29712862 http://dx.doi.org/10.1073/pnas.1717934115 |
work_keys_str_mv | AT tanchingwen symbioticpolydnavirusofaparasitemanipulatescaterpillarandplantimmunity AT peiffermichelle symbioticpolydnavirusofaparasitemanipulatescaterpillarandplantimmunity AT hooverkelli symbioticpolydnavirusofaparasitemanipulatescaterpillarandplantimmunity AT rosacristina symbioticpolydnavirusofaparasitemanipulatescaterpillarandplantimmunity AT acevedoflore symbioticpolydnavirusofaparasitemanipulatescaterpillarandplantimmunity AT feltongaryw symbioticpolydnavirusofaparasitemanipulatescaterpillarandplantimmunity |