Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores

Light quality and chemicals in a plant’s environment can provide crucial information about the presence and nature of antagonists, such as competitors and herbivores. Here, we evaluate the roles of three sources of information—shifts in the red:far red (R:FR) ratio of light reflected off of potentia...

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Main Authors: Alexander Chautá, André Kessler
Format: Article
Language:English
Published: MDPI AG 2022-10-01
Series:Plants
Subjects:
Online Access:https://www.mdpi.com/2223-7747/11/20/2768
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author Alexander Chautá
André Kessler
author_facet Alexander Chautá
André Kessler
author_sort Alexander Chautá
collection DOAJ
description Light quality and chemicals in a plant’s environment can provide crucial information about the presence and nature of antagonists, such as competitors and herbivores. Here, we evaluate the roles of three sources of information—shifts in the red:far red (R:FR) ratio of light reflected off of potentially competing neighbors, induced metabolic changes to damage by insect herbivores, and induced changes to volatile organic compounds emitted from herbivore-damaged neighboring plants—to affect metabolic responses in the tall goldenrod, <i>Solidago altissima</i>. We address the hypothesis that plants integrate the information available about competitors and herbivory to optimize metabolic responses to interacting stressors by exposing plants to the different types of environmental information in isolation and combination. We found strong interactions between the exposure to decreased R:FR light ratios and damage on the induction of secondary metabolites (volatile and non-volatile) in plants. Similarly, the perception of VOCs emitted from neighboring plants was altered by the simultaneous exposure to spectral cues from neighbors. These results suggest that plants integrate spectral and chemical environmental cues to change the production and perception of volatile and non-volatile compounds and highlight the role of plant context-dependent metabolic responses in mediating population and community dynamics.
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spelling doaj.art-11be3c7f5f494b56b89ba466844d574c2023-11-24T02:05:05ZengMDPI AGPlants2223-77472022-10-011120276810.3390/plants11202768Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and HerbivoresAlexander Chautá0André Kessler1Department of Ecology and Evolutionary Biology, Cornell University, E445 Corson Hall, Ithaca, NY 14850, USADepartment of Ecology and Evolutionary Biology, Cornell University, E445 Corson Hall, Ithaca, NY 14850, USALight quality and chemicals in a plant’s environment can provide crucial information about the presence and nature of antagonists, such as competitors and herbivores. Here, we evaluate the roles of three sources of information—shifts in the red:far red (R:FR) ratio of light reflected off of potentially competing neighbors, induced metabolic changes to damage by insect herbivores, and induced changes to volatile organic compounds emitted from herbivore-damaged neighboring plants—to affect metabolic responses in the tall goldenrod, <i>Solidago altissima</i>. We address the hypothesis that plants integrate the information available about competitors and herbivory to optimize metabolic responses to interacting stressors by exposing plants to the different types of environmental information in isolation and combination. We found strong interactions between the exposure to decreased R:FR light ratios and damage on the induction of secondary metabolites (volatile and non-volatile) in plants. Similarly, the perception of VOCs emitted from neighboring plants was altered by the simultaneous exposure to spectral cues from neighbors. These results suggest that plants integrate spectral and chemical environmental cues to change the production and perception of volatile and non-volatile compounds and highlight the role of plant context-dependent metabolic responses in mediating population and community dynamics.https://www.mdpi.com/2223-7747/11/20/2768competitionherbivoryinduced defensesplant communicationred:far redvolatiles
spellingShingle Alexander Chautá
André Kessler
Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores
Plants
competition
herbivory
induced defenses
plant communication
red:far red
volatiles
title Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores
title_full Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores
title_fullStr Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores
title_full_unstemmed Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores
title_short Metabolic Integration of Spectral and Chemical Cues Mediating Plant Responses to Competitors and Herbivores
title_sort metabolic integration of spectral and chemical cues mediating plant responses to competitors and herbivores
topic competition
herbivory
induced defenses
plant communication
red:far red
volatiles
url https://www.mdpi.com/2223-7747/11/20/2768
work_keys_str_mv AT alexanderchauta metabolicintegrationofspectralandchemicalcuesmediatingplantresponsestocompetitorsandherbivores
AT andrekessler metabolicintegrationofspectralandchemicalcuesmediatingplantresponsestocompetitorsandherbivores