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How Stress Affects Your Budget—Stress Impacts on Starch Metabolism

Starch is a polysaccharide that is stored to be used in different timescales. Transitory starch is used during nighttime when photosynthesis is unavailable. Long-term starch is stored to support vegetative or reproductive growth, reproduction, or stress responses. Starch is not just a reserve of ene...

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Detalles Bibliográficos
Autores principales: Ribeiro, Camila, Stitt, Mark, Hotta, Carlos Takeshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874198/
https://www.ncbi.nlm.nih.gov/pubmed/35222460
http://dx.doi.org/10.3389/fpls.2022.774060
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author Ribeiro, Camila
Stitt, Mark
Hotta, Carlos Takeshi
author_facet Ribeiro, Camila
Stitt, Mark
Hotta, Carlos Takeshi
author_sort Ribeiro, Camila
collection PubMed
description Starch is a polysaccharide that is stored to be used in different timescales. Transitory starch is used during nighttime when photosynthesis is unavailable. Long-term starch is stored to support vegetative or reproductive growth, reproduction, or stress responses. Starch is not just a reserve of energy for most plants but also has many other roles, such as promoting rapid stomatal opening, making osmoprotectants, cryoprotectants, scavengers of free radicals and signals, and reverting embolised vessels. Biotic and abiotic stress vary according to their nature, strength, duration, developmental stage of the plant, time of the day, and how gradually they develop. The impact of stress on starch metabolism depends on many factors: how the stress impacts the rate of photosynthesis, the affected organs, how the stress impacts carbon allocation, and the energy requirements involved in response to stress. Under abiotic stresses, starch degradation is usually activated, but starch accumulation may also be observed when growth is inhibited more than photosynthesis. Under biotic stresses, starch is usually accumulated, but the molecular mechanisms involved are largely unknown. In this mini-review, we explore what has been learned about starch metabolism and plant stress responses and discuss the current obstacles to fully understanding their interactions.
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spelling pubmed-88741982022-02-26 How Stress Affects Your Budget—Stress Impacts on Starch Metabolism Ribeiro, Camila Stitt, Mark Hotta, Carlos Takeshi Front Plant Sci Plant Science Starch is a polysaccharide that is stored to be used in different timescales. Transitory starch is used during nighttime when photosynthesis is unavailable. Long-term starch is stored to support vegetative or reproductive growth, reproduction, or stress responses. Starch is not just a reserve of energy for most plants but also has many other roles, such as promoting rapid stomatal opening, making osmoprotectants, cryoprotectants, scavengers of free radicals and signals, and reverting embolised vessels. Biotic and abiotic stress vary according to their nature, strength, duration, developmental stage of the plant, time of the day, and how gradually they develop. The impact of stress on starch metabolism depends on many factors: how the stress impacts the rate of photosynthesis, the affected organs, how the stress impacts carbon allocation, and the energy requirements involved in response to stress. Under abiotic stresses, starch degradation is usually activated, but starch accumulation may also be observed when growth is inhibited more than photosynthesis. Under biotic stresses, starch is usually accumulated, but the molecular mechanisms involved are largely unknown. In this mini-review, we explore what has been learned about starch metabolism and plant stress responses and discuss the current obstacles to fully understanding their interactions. Frontiers Media S.A. 2022-02-11 /pmc/articles/PMC8874198/ /pubmed/35222460 http://dx.doi.org/10.3389/fpls.2022.774060 Text en Copyright © 2022 Ribeiro, Stitt and Hotta. https://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) and the copyright owner(s) 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
Ribeiro, Camila
Stitt, Mark
Hotta, Carlos Takeshi
How Stress Affects Your Budget—Stress Impacts on Starch Metabolism
title How Stress Affects Your Budget—Stress Impacts on Starch Metabolism
title_full How Stress Affects Your Budget—Stress Impacts on Starch Metabolism
title_fullStr How Stress Affects Your Budget—Stress Impacts on Starch Metabolism
title_full_unstemmed How Stress Affects Your Budget—Stress Impacts on Starch Metabolism
title_short How Stress Affects Your Budget—Stress Impacts on Starch Metabolism
title_sort how stress affects your budget—stress impacts on starch metabolism
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8874198/
https://www.ncbi.nlm.nih.gov/pubmed/35222460
http://dx.doi.org/10.3389/fpls.2022.774060
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