The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga

Plants and their herbivores constitute more than half of the organisms in tropical forests. Therefore, a better understanding of the evolution of plant defenses against their herbivores may be central for our understanding of tropical biodiversity. Here, we address the evolution of antiherbivore def...

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Autores Principales: Kursar, Thomas A., Dexter, Kyle G., Lokvam, John, Pennington, R. Toby, Richardson, James E., Weber, Marjorie G., Murakami, Eric T., Drake, Camilla, McGregor, Ruth, Coley, Phyllis D.
Formato: Artículo (Article)
Lenguaje:Inglés (English)
Publicado: National Academy of Sciences 2009
Materias:
Acceso en línea:https://repository.urosario.edu.co/handle/10336/27060
https://doi.org/10.1073/pnas.0904786106
id ir-10336-27060
recordtype dspace
spelling ir-10336-270602020-08-19T14:46:26Z The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga La evolución de las defensas antiherbívoras y su contribución a la coexistencia de especies en el género de árboles tropicales Inga Kursar, Thomas A. Dexter, Kyle G. Lokvam, John Pennington, R. Toby Richardson, James E. Weber, Marjorie G. Murakami, Eric T. Drake, Camilla McGregor, Ruth Coley, Phyllis D. Plant defenses Community assembly Phylogenetic signal Herbivory Tropical diversity Plants and their herbivores constitute more than half of the organisms in tropical forests. Therefore, a better understanding of the evolution of plant defenses against their herbivores may be central for our understanding of tropical biodiversity. Here, we address the evolution of antiherbivore defenses and their possible contribution to coexistence in the Neotropical tree genus Inga (Fabaceae). Inga has >300 species, has radiated recently, and is frequently one of the most diverse and abundant genera at a given site. For 37 species from Panama and Peru we characterized developmental, ant, and chemical defenses against herbivores. We found extensive variation in defenses, but little evidence of phylogenetic signal. Furthermore, in a multivariate analysis, developmental, ant, and chemical defenses varied independently (were orthogonal) and appear to have evolved independently of each other. Our results are consistent with strong selection for divergent defensive traits, presumably mediated by herbivores. In an analysis of community assembly, we found that Inga species co-occurring as neighbors are more different in antiherbivore defenses than random, suggesting that possessing a rare defense phenotype increases fitness. These results imply that interactions with herbivores may be an important axis of niche differentiation that permits the coexistence of many species of Inga within a single site. Interactions between plants and their herbivores likely play a key role in the generation and maintenance of the conspicuously high plant diversity in the tropics. 2009-10-27 2020-08-19T14:40:53Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion ISSN: 0027-8424 EISSN: 1091-6490 https://repository.urosario.edu.co/handle/10336/27060 https://doi.org/10.1073/pnas.0904786106 eng info:eu-repo/semantics/openAccess application/pdf National Academy of Sciences Proceedings of the National Academy of Sciences of the United States of America
institution EdocUR - Universidad del Rosario
collection DSpace
language Inglés (English)
topic Plant defenses
Community assembly
Phylogenetic signal
Herbivory
Tropical diversity
spellingShingle Plant defenses
Community assembly
Phylogenetic signal
Herbivory
Tropical diversity
Kursar, Thomas A.
Dexter, Kyle G.
Lokvam, John
Pennington, R. Toby
Richardson, James E.
Weber, Marjorie G.
Murakami, Eric T.
Drake, Camilla
McGregor, Ruth
Coley, Phyllis D.
The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga
description Plants and their herbivores constitute more than half of the organisms in tropical forests. Therefore, a better understanding of the evolution of plant defenses against their herbivores may be central for our understanding of tropical biodiversity. Here, we address the evolution of antiherbivore defenses and their possible contribution to coexistence in the Neotropical tree genus Inga (Fabaceae). Inga has >300 species, has radiated recently, and is frequently one of the most diverse and abundant genera at a given site. For 37 species from Panama and Peru we characterized developmental, ant, and chemical defenses against herbivores. We found extensive variation in defenses, but little evidence of phylogenetic signal. Furthermore, in a multivariate analysis, developmental, ant, and chemical defenses varied independently (were orthogonal) and appear to have evolved independently of each other. Our results are consistent with strong selection for divergent defensive traits, presumably mediated by herbivores. In an analysis of community assembly, we found that Inga species co-occurring as neighbors are more different in antiherbivore defenses than random, suggesting that possessing a rare defense phenotype increases fitness. These results imply that interactions with herbivores may be an important axis of niche differentiation that permits the coexistence of many species of Inga within a single site. Interactions between plants and their herbivores likely play a key role in the generation and maintenance of the conspicuously high plant diversity in the tropics.
format Artículo (Article)
author Kursar, Thomas A.
Dexter, Kyle G.
Lokvam, John
Pennington, R. Toby
Richardson, James E.
Weber, Marjorie G.
Murakami, Eric T.
Drake, Camilla
McGregor, Ruth
Coley, Phyllis D.
author_facet Kursar, Thomas A.
Dexter, Kyle G.
Lokvam, John
Pennington, R. Toby
Richardson, James E.
Weber, Marjorie G.
Murakami, Eric T.
Drake, Camilla
McGregor, Ruth
Coley, Phyllis D.
author_sort Kursar, Thomas A.
title The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga
title_short The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga
title_full The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga
title_fullStr The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga
title_full_unstemmed The evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus Inga
title_sort evolution of antiherbivore defenses and their contribution to species coexistence in the tropical tree genus inga
publisher National Academy of Sciences
publishDate 2009
url https://repository.urosario.edu.co/handle/10336/27060
https://doi.org/10.1073/pnas.0904786106
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