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When does it pay off to prime for defense? A modeling analysis

Plants can prepare for future herbivore attack through a process called priming. Primed plants respond more strongly and/or faster to insect attack succeeding the priming event than nonprimed plants, while the energetic costs of priming are relatively low. To better understand the evolution of primi...

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Autores principales: Douma, Jacob C., Vermeulen, Peter J., Poelman, Erik H., Dicke, Marcel, Anten, Niels P. R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5659137/
https://www.ncbi.nlm.nih.gov/pubmed/28892162
http://dx.doi.org/10.1111/nph.14771
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author Douma, Jacob C.
Vermeulen, Peter J.
Poelman, Erik H.
Dicke, Marcel
Anten, Niels P. R.
author_facet Douma, Jacob C.
Vermeulen, Peter J.
Poelman, Erik H.
Dicke, Marcel
Anten, Niels P. R.
author_sort Douma, Jacob C.
collection PubMed
description Plants can prepare for future herbivore attack through a process called priming. Primed plants respond more strongly and/or faster to insect attack succeeding the priming event than nonprimed plants, while the energetic costs of priming are relatively low. To better understand the evolution of priming, we developed a simulation model, partly parameterized for Brassica nigra plants, to explore how the fitness benefits of priming change when plants are grown in different biotic environments. Model simulations showed that herbivore dynamics (arrival probability, arrival time, and feeding rate) affect the optimal duration, the optimal investment and the fitness benefits of priming. Competition for light increases the indirect costs of priming, but may also result in a larger payoff when the nonprimed plant experiences substantial leaf losses. This modeling approach identified some important knowledge gaps: herbivore arrival rates on individual plants are rarely reported but they shape the optimal duration of priming, and it would pay off if the likelihood, severity and timing of the attack could be discerned from the priming cue, but it is unknown if plants can do so. In addition, the model generated some testable predictions, for example that the sensitivity to the priming cue decreases with plant age.
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spelling pubmed-56591372017-11-03 When does it pay off to prime for defense? A modeling analysis Douma, Jacob C. Vermeulen, Peter J. Poelman, Erik H. Dicke, Marcel Anten, Niels P. R. New Phytol Research Plants can prepare for future herbivore attack through a process called priming. Primed plants respond more strongly and/or faster to insect attack succeeding the priming event than nonprimed plants, while the energetic costs of priming are relatively low. To better understand the evolution of priming, we developed a simulation model, partly parameterized for Brassica nigra plants, to explore how the fitness benefits of priming change when plants are grown in different biotic environments. Model simulations showed that herbivore dynamics (arrival probability, arrival time, and feeding rate) affect the optimal duration, the optimal investment and the fitness benefits of priming. Competition for light increases the indirect costs of priming, but may also result in a larger payoff when the nonprimed plant experiences substantial leaf losses. This modeling approach identified some important knowledge gaps: herbivore arrival rates on individual plants are rarely reported but they shape the optimal duration of priming, and it would pay off if the likelihood, severity and timing of the attack could be discerned from the priming cue, but it is unknown if plants can do so. In addition, the model generated some testable predictions, for example that the sensitivity to the priming cue decreases with plant age. John Wiley and Sons Inc. 2017-09-11 2017-11 /pmc/articles/PMC5659137/ /pubmed/28892162 http://dx.doi.org/10.1111/nph.14771 Text en © 2017 The Authors New Phytologist © 2017 New Phytologist Trust This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research
Douma, Jacob C.
Vermeulen, Peter J.
Poelman, Erik H.
Dicke, Marcel
Anten, Niels P. R.
When does it pay off to prime for defense? A modeling analysis
title When does it pay off to prime for defense? A modeling analysis
title_full When does it pay off to prime for defense? A modeling analysis
title_fullStr When does it pay off to prime for defense? A modeling analysis
title_full_unstemmed When does it pay off to prime for defense? A modeling analysis
title_short When does it pay off to prime for defense? A modeling analysis
title_sort when does it pay off to prime for defense? a modeling analysis
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5659137/
https://www.ncbi.nlm.nih.gov/pubmed/28892162
http://dx.doi.org/10.1111/nph.14771
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