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Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions

The response of broad bean (Vicia faba) plants to water stress alone and in combination with green stink bug (Nezara viridula) infestation was investigated through measurement of: (1) leaf gas exchange; (2) plant hormone titres of abscisic acid (ABA) and its metabolites, and of salicylic acid (SA);...

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Autores principales: Ederli, Luisa, Brunetti, Cecilia, Centritto, Mauro, Colazza, Stefano, Frati, Francesca, Loreto, Francesco, Marino, Giovanni, Salerno, Gianandrea, Pasqualini, Stefania
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5463057/
https://www.ncbi.nlm.nih.gov/pubmed/28642773
http://dx.doi.org/10.3389/fpls.2017.00959
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author Ederli, Luisa
Brunetti, Cecilia
Centritto, Mauro
Colazza, Stefano
Frati, Francesca
Loreto, Francesco
Marino, Giovanni
Salerno, Gianandrea
Pasqualini, Stefania
author_facet Ederli, Luisa
Brunetti, Cecilia
Centritto, Mauro
Colazza, Stefano
Frati, Francesca
Loreto, Francesco
Marino, Giovanni
Salerno, Gianandrea
Pasqualini, Stefania
author_sort Ederli, Luisa
collection PubMed
description The response of broad bean (Vicia faba) plants to water stress alone and in combination with green stink bug (Nezara viridula) infestation was investigated through measurement of: (1) leaf gas exchange; (2) plant hormone titres of abscisic acid (ABA) and its metabolites, and of salicylic acid (SA); and (3) hydrogen peroxide (H(2)O(2)) content. Furthermore, we evaluated the effects of experimentally water-stressed broad-bean plants on N. viridula performance in terms of adult host–plant preference, and nymph growth and survival. Water stress significantly reduced both photosynthesis (A) and stomatal conductance (g(s)), while infestation by the green stink bug had no effects on photosynthesis but significantly altered partitioning of ABA between roots and shoots. Leaf ABA was decreased and root ABA increased as a result of herbivore attack, under both well-watered and water-deprived conditions. Water stress significantly impacted on SA content in leaves, but not on H(2)O(2). However, infestation of N. viridula greatly increased both SA and H(2)O(2) contents in leaves and roots, which suggests that endogenous SA and H(2)O(2) have roles in plant responses to herbivore infestation. No significant differences were seen for green stink bug choice between well-watered and water-stressed plants. However, for green stink bug nymphs, plant water stress promoted significantly lower weight increases and significantly higher mortality, which indicates that highly water-stressed host plants are less suitable for N. viridula infestation. In conclusion two important findings emerged: (i) association of water stress with herbivore infestation largely changes plant response in terms of phytohormone contents; but (ii) water stress does not affect the preference of the infesting insects, although their performance was impaired.
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spelling pubmed-54630572017-06-22 Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions Ederli, Luisa Brunetti, Cecilia Centritto, Mauro Colazza, Stefano Frati, Francesca Loreto, Francesco Marino, Giovanni Salerno, Gianandrea Pasqualini, Stefania Front Plant Sci Plant Science The response of broad bean (Vicia faba) plants to water stress alone and in combination with green stink bug (Nezara viridula) infestation was investigated through measurement of: (1) leaf gas exchange; (2) plant hormone titres of abscisic acid (ABA) and its metabolites, and of salicylic acid (SA); and (3) hydrogen peroxide (H(2)O(2)) content. Furthermore, we evaluated the effects of experimentally water-stressed broad-bean plants on N. viridula performance in terms of adult host–plant preference, and nymph growth and survival. Water stress significantly reduced both photosynthesis (A) and stomatal conductance (g(s)), while infestation by the green stink bug had no effects on photosynthesis but significantly altered partitioning of ABA between roots and shoots. Leaf ABA was decreased and root ABA increased as a result of herbivore attack, under both well-watered and water-deprived conditions. Water stress significantly impacted on SA content in leaves, but not on H(2)O(2). However, infestation of N. viridula greatly increased both SA and H(2)O(2) contents in leaves and roots, which suggests that endogenous SA and H(2)O(2) have roles in plant responses to herbivore infestation. No significant differences were seen for green stink bug choice between well-watered and water-stressed plants. However, for green stink bug nymphs, plant water stress promoted significantly lower weight increases and significantly higher mortality, which indicates that highly water-stressed host plants are less suitable for N. viridula infestation. In conclusion two important findings emerged: (i) association of water stress with herbivore infestation largely changes plant response in terms of phytohormone contents; but (ii) water stress does not affect the preference of the infesting insects, although their performance was impaired. Frontiers Media S.A. 2017-06-08 /pmc/articles/PMC5463057/ /pubmed/28642773 http://dx.doi.org/10.3389/fpls.2017.00959 Text en Copyright © 2017 Ederli, Brunetti, Centritto, Colazza, Frati, Loreto, Marino, Salerno and Pasqualini. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Ederli, Luisa
Brunetti, Cecilia
Centritto, Mauro
Colazza, Stefano
Frati, Francesca
Loreto, Francesco
Marino, Giovanni
Salerno, Gianandrea
Pasqualini, Stefania
Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions
title Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions
title_full Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions
title_fullStr Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions
title_full_unstemmed Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions
title_short Infestation of Broad Bean (Vicia faba) by the Green Stink Bug (Nezara viridula) Decreases Shoot Abscisic Acid Contents under Well-Watered and Drought Conditions
title_sort infestation of broad bean (vicia faba) by the green stink bug (nezara viridula) decreases shoot abscisic acid contents under well-watered and drought conditions
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5463057/
https://www.ncbi.nlm.nih.gov/pubmed/28642773
http://dx.doi.org/10.3389/fpls.2017.00959
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