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Evolution of host range in Coleosporium ipomoeae, a plant pathogen with multiple hosts.

Publication ,  Journal Article
Chappell, TM; Rausher, MD
Published in: Proceedings of the National Academy of Sciences of the United States of America
May 2016

Plants and their pathogens coevolve locally. Previous investigations of one host-one pathogen systems have demonstrated that natural selection favors pathogen genotypes that are virulent on a broad range of host genotypes. In the present study, we examine a system consisting of one pathogen species that infects three host species in the morning glory genus Ipomoea. We show that many pathogen genotypes can infect two or three of the host species when tested on plants from nonlocal communities. By contrast, pathogen genotypes are highly host-specific, infecting only one host species, when tested on host species from the local community. This pattern indicates that within-community evolution narrows the host breadth of pathogen genotypes. Possible evolutionary mechanisms include direct selection for narrow host breadth due to costs of virulence and evolution of ipomoea resistance in the host species.

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Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

May 2016

Volume

113

Issue

19

Start / End Page

5346 / 5351

Related Subject Headings

  • Species Specificity
  • Plant Diseases
  • North Carolina
  • Ipomoea
  • Host-Pathogen Interactions
  • Genetic Variation
  • Evolution, Molecular
  • Basidiomycota
 

Citation

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MLA
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Chappell, T. M., & Rausher, M. D. (2016). Evolution of host range in Coleosporium ipomoeae, a plant pathogen with multiple hosts. Proceedings of the National Academy of Sciences of the United States of America, 113(19), 5346–5351. https://doi.org/10.1073/pnas.1522997113
Chappell, Thomas M., and Mark D. Rausher. “Evolution of host range in Coleosporium ipomoeae, a plant pathogen with multiple hosts.Proceedings of the National Academy of Sciences of the United States of America 113, no. 19 (May 2016): 5346–51. https://doi.org/10.1073/pnas.1522997113.
Chappell TM, Rausher MD. Evolution of host range in Coleosporium ipomoeae, a plant pathogen with multiple hosts. Proceedings of the National Academy of Sciences of the United States of America. 2016 May;113(19):5346–51.
Chappell, Thomas M., and Mark D. Rausher. “Evolution of host range in Coleosporium ipomoeae, a plant pathogen with multiple hosts.Proceedings of the National Academy of Sciences of the United States of America, vol. 113, no. 19, May 2016, pp. 5346–51. Epmc, doi:10.1073/pnas.1522997113.
Chappell TM, Rausher MD. Evolution of host range in Coleosporium ipomoeae, a plant pathogen with multiple hosts. Proceedings of the National Academy of Sciences of the United States of America. 2016 May;113(19):5346–5351.
Journal cover image

Published In

Proceedings of the National Academy of Sciences of the United States of America

DOI

EISSN

1091-6490

ISSN

0027-8424

Publication Date

May 2016

Volume

113

Issue

19

Start / End Page

5346 / 5351

Related Subject Headings

  • Species Specificity
  • Plant Diseases
  • North Carolina
  • Ipomoea
  • Host-Pathogen Interactions
  • Genetic Variation
  • Evolution, Molecular
  • Basidiomycota