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Systemic signaling during abiotic stress combination in plants

Extreme environmental conditions, such as heat, salinity, and decreased water availability, can have a devastating impact on plant growth and productivity, potentially resulting in the collapse of entire ecosystems. Stress-induced systemic signaling and systemic acquired acclimation play canonical r...

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Autores principales: Zandalinas, Sara I., Fichman, Yosef, Devireddy, Amith R., Sengupta, Soham, Azad, Rajeev K., Mittler, Ron
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7306788/
https://www.ncbi.nlm.nih.gov/pubmed/32471943
http://dx.doi.org/10.1073/pnas.2005077117
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author Zandalinas, Sara I.
Fichman, Yosef
Devireddy, Amith R.
Sengupta, Soham
Azad, Rajeev K.
Mittler, Ron
author_facet Zandalinas, Sara I.
Fichman, Yosef
Devireddy, Amith R.
Sengupta, Soham
Azad, Rajeev K.
Mittler, Ron
author_sort Zandalinas, Sara I.
collection PubMed
description Extreme environmental conditions, such as heat, salinity, and decreased water availability, can have a devastating impact on plant growth and productivity, potentially resulting in the collapse of entire ecosystems. Stress-induced systemic signaling and systemic acquired acclimation play canonical roles in plant survival during episodes of environmental stress. Recent studies revealed that in response to a single abiotic stress, applied to a single leaf, plants mount a comprehensive stress-specific systemic response that includes the accumulation of many different stress-specific transcripts and metabolites, as well as a coordinated stress-specific whole-plant stomatal response. However, in nature plants are routinely subjected to a combination of two or more different abiotic stresses, each potentially triggering its own stress-specific systemic response, highlighting a new fundamental question in plant biology: are plants capable of integrating two different systemic signals simultaneously generated during conditions of stress combination? Here we show that plants can integrate two different systemic signals simultaneously generated during stress combination, and that the manner in which plants sense the different stresses that trigger these signals (i.e., at the same or different parts of the plant) makes a significant difference in how fast and efficient they induce systemic reactive oxygen species (ROS) signals; transcriptomic, hormonal, and stomatal responses; as well as plant acclimation. Our results shed light on how plants acclimate to their environment and survive a combination of different abiotic stresses. In addition, they highlight a key role for systemic ROS signals in coordinating the response of different leaves to stress.
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spelling pubmed-73067882020-06-25 Systemic signaling during abiotic stress combination in plants Zandalinas, Sara I. Fichman, Yosef Devireddy, Amith R. Sengupta, Soham Azad, Rajeev K. Mittler, Ron Proc Natl Acad Sci U S A Biological Sciences Extreme environmental conditions, such as heat, salinity, and decreased water availability, can have a devastating impact on plant growth and productivity, potentially resulting in the collapse of entire ecosystems. Stress-induced systemic signaling and systemic acquired acclimation play canonical roles in plant survival during episodes of environmental stress. Recent studies revealed that in response to a single abiotic stress, applied to a single leaf, plants mount a comprehensive stress-specific systemic response that includes the accumulation of many different stress-specific transcripts and metabolites, as well as a coordinated stress-specific whole-plant stomatal response. However, in nature plants are routinely subjected to a combination of two or more different abiotic stresses, each potentially triggering its own stress-specific systemic response, highlighting a new fundamental question in plant biology: are plants capable of integrating two different systemic signals simultaneously generated during conditions of stress combination? Here we show that plants can integrate two different systemic signals simultaneously generated during stress combination, and that the manner in which plants sense the different stresses that trigger these signals (i.e., at the same or different parts of the plant) makes a significant difference in how fast and efficient they induce systemic reactive oxygen species (ROS) signals; transcriptomic, hormonal, and stomatal responses; as well as plant acclimation. Our results shed light on how plants acclimate to their environment and survive a combination of different abiotic stresses. In addition, they highlight a key role for systemic ROS signals in coordinating the response of different leaves to stress. National Academy of Sciences 2020-06-16 2020-05-29 /pmc/articles/PMC7306788/ /pubmed/32471943 http://dx.doi.org/10.1073/pnas.2005077117 Text en Copyright © 2020 the Author(s). Published by PNAS. http://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY) (http://creativecommons.org/licenses/by/4.0/) .
spellingShingle Biological Sciences
Zandalinas, Sara I.
Fichman, Yosef
Devireddy, Amith R.
Sengupta, Soham
Azad, Rajeev K.
Mittler, Ron
Systemic signaling during abiotic stress combination in plants
title Systemic signaling during abiotic stress combination in plants
title_full Systemic signaling during abiotic stress combination in plants
title_fullStr Systemic signaling during abiotic stress combination in plants
title_full_unstemmed Systemic signaling during abiotic stress combination in plants
title_short Systemic signaling during abiotic stress combination in plants
title_sort systemic signaling during abiotic stress combination in plants
topic Biological Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7306788/
https://www.ncbi.nlm.nih.gov/pubmed/32471943
http://dx.doi.org/10.1073/pnas.2005077117
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