Outcomes of co-infection by two potyviruses

Implications for the evolution of manipulative strategies

Lucie Salvaudon, Consuelo M De Moraes, Mark C Mescher

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

Recent studies have documented effects of plant viruses on host plants that appear to enhance transmission by insect vectors. But, almost no empirical work has explored the implications of such apparent manipulation for interactions among co-infecting pathogens. We examined single and mixed infections of two potyviruses, watermelon mosaic virus WMV and zucchini yellow mosaic virus ZYMV, that frequently co-occur in cucurbitaceae populations and share the same aphid vectors. We found that ZYMV isolates replicated at similar rates in single and mixed infections, whereasWMV strains accumulated to significantly lower levels in thepresence ofZYMV. Furthermore, ZYMV induced changes in leaf colour and volatile emissions that enhanced aphid Aphis gossypii recruitment to infected plants. By contrast, WMV did not elicit strong effects on plant-aphid interactions. Nevertheless, WMV was still readily transmitted from mixed infections, despite fairing poorly in in-plant competition. These findings suggest that pathogen effects on host-vector interactions may well influence competition among co-infecting pathogens. For example, if non-manipulative pathogens benefit from the increased vector traffic elicited by manipulative competitors, their costs of competition may be mitigated to some extent. Conversely, the benefits of manipulation may be limited by free-rider effects in systems where there is strong competition among pathogens for host resources and/or access to vectors.

Original languageEnglish (US)
Article number20122772
JournalProceedings of the Royal Society B: Biological Sciences
Volume280
Issue number1756
DOIs
StatePublished - Jan 1 2013

Fingerprint

Potyvirus
Potyviridae
Pathogens
Coinfection
mixed infection
Aphids
pathogen
Mosaic Viruses
aphid
Viruses
pathogens
Aphidoidea
virus
Insect Vectors
Citrullus
Cucurbitaceae
Plant Viruses
Watermelon mosaic virus
Zucchini yellow mosaic virus
plant competition

All Science Journal Classification (ASJC) codes

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Environmental Science(all)
  • Agricultural and Biological Sciences(all)

Cite this

@article{d7c00f6783074acca5ab18e21364c57f,
title = "Outcomes of co-infection by two potyviruses: Implications for the evolution of manipulative strategies",
abstract = "Recent studies have documented effects of plant viruses on host plants that appear to enhance transmission by insect vectors. But, almost no empirical work has explored the implications of such apparent manipulation for interactions among co-infecting pathogens. We examined single and mixed infections of two potyviruses, watermelon mosaic virus WMV and zucchini yellow mosaic virus ZYMV, that frequently co-occur in cucurbitaceae populations and share the same aphid vectors. We found that ZYMV isolates replicated at similar rates in single and mixed infections, whereasWMV strains accumulated to significantly lower levels in thepresence ofZYMV. Furthermore, ZYMV induced changes in leaf colour and volatile emissions that enhanced aphid Aphis gossypii recruitment to infected plants. By contrast, WMV did not elicit strong effects on plant-aphid interactions. Nevertheless, WMV was still readily transmitted from mixed infections, despite fairing poorly in in-plant competition. These findings suggest that pathogen effects on host-vector interactions may well influence competition among co-infecting pathogens. For example, if non-manipulative pathogens benefit from the increased vector traffic elicited by manipulative competitors, their costs of competition may be mitigated to some extent. Conversely, the benefits of manipulation may be limited by free-rider effects in systems where there is strong competition among pathogens for host resources and/or access to vectors.",
author = "Lucie Salvaudon and {De Moraes}, {Consuelo M} and Mescher, {Mark C}",
year = "2013",
month = "1",
day = "1",
doi = "10.1098/rspb.2012.2959",
language = "English (US)",
volume = "280",
journal = "Proceedings of the Royal Society B: Biological Sciences",
issn = "0962-8452",
publisher = "Royal Society of London",
number = "1756",

}

Outcomes of co-infection by two potyviruses : Implications for the evolution of manipulative strategies. / Salvaudon, Lucie; De Moraes, Consuelo M; Mescher, Mark C.

In: Proceedings of the Royal Society B: Biological Sciences, Vol. 280, No. 1756, 20122772, 01.01.2013.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Outcomes of co-infection by two potyviruses

T2 - Implications for the evolution of manipulative strategies

AU - Salvaudon, Lucie

AU - De Moraes, Consuelo M

AU - Mescher, Mark C

PY - 2013/1/1

Y1 - 2013/1/1

N2 - Recent studies have documented effects of plant viruses on host plants that appear to enhance transmission by insect vectors. But, almost no empirical work has explored the implications of such apparent manipulation for interactions among co-infecting pathogens. We examined single and mixed infections of two potyviruses, watermelon mosaic virus WMV and zucchini yellow mosaic virus ZYMV, that frequently co-occur in cucurbitaceae populations and share the same aphid vectors. We found that ZYMV isolates replicated at similar rates in single and mixed infections, whereasWMV strains accumulated to significantly lower levels in thepresence ofZYMV. Furthermore, ZYMV induced changes in leaf colour and volatile emissions that enhanced aphid Aphis gossypii recruitment to infected plants. By contrast, WMV did not elicit strong effects on plant-aphid interactions. Nevertheless, WMV was still readily transmitted from mixed infections, despite fairing poorly in in-plant competition. These findings suggest that pathogen effects on host-vector interactions may well influence competition among co-infecting pathogens. For example, if non-manipulative pathogens benefit from the increased vector traffic elicited by manipulative competitors, their costs of competition may be mitigated to some extent. Conversely, the benefits of manipulation may be limited by free-rider effects in systems where there is strong competition among pathogens for host resources and/or access to vectors.

AB - Recent studies have documented effects of plant viruses on host plants that appear to enhance transmission by insect vectors. But, almost no empirical work has explored the implications of such apparent manipulation for interactions among co-infecting pathogens. We examined single and mixed infections of two potyviruses, watermelon mosaic virus WMV and zucchini yellow mosaic virus ZYMV, that frequently co-occur in cucurbitaceae populations and share the same aphid vectors. We found that ZYMV isolates replicated at similar rates in single and mixed infections, whereasWMV strains accumulated to significantly lower levels in thepresence ofZYMV. Furthermore, ZYMV induced changes in leaf colour and volatile emissions that enhanced aphid Aphis gossypii recruitment to infected plants. By contrast, WMV did not elicit strong effects on plant-aphid interactions. Nevertheless, WMV was still readily transmitted from mixed infections, despite fairing poorly in in-plant competition. These findings suggest that pathogen effects on host-vector interactions may well influence competition among co-infecting pathogens. For example, if non-manipulative pathogens benefit from the increased vector traffic elicited by manipulative competitors, their costs of competition may be mitigated to some extent. Conversely, the benefits of manipulation may be limited by free-rider effects in systems where there is strong competition among pathogens for host resources and/or access to vectors.

UR - http://www.scopus.com/inward/record.url?scp=84878358095&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84878358095&partnerID=8YFLogxK

U2 - 10.1098/rspb.2012.2959

DO - 10.1098/rspb.2012.2959

M3 - Article

VL - 280

JO - Proceedings of the Royal Society B: Biological Sciences

JF - Proceedings of the Royal Society B: Biological Sciences

SN - 0962-8452

IS - 1756

M1 - 20122772

ER -