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Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms

This review synthesizes knowledge on dark-induced barley, attached, leaf senescence (DILS) as a model and discusses the possibility of using this crop system for studying senescence and autophagy mechanisms. It addresses the recent progress made in our understanding of DILS. The following aspects ar...

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Autores principales: Paluch-Lubawa, Ewelina, Stolarska, Ewelina, Sobieszczuk-Nowicka, Ewa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8005711/
https://www.ncbi.nlm.nih.gov/pubmed/33790925
http://dx.doi.org/10.3389/fpls.2021.635619
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author Paluch-Lubawa, Ewelina
Stolarska, Ewelina
Sobieszczuk-Nowicka, Ewa
author_facet Paluch-Lubawa, Ewelina
Stolarska, Ewelina
Sobieszczuk-Nowicka, Ewa
author_sort Paluch-Lubawa, Ewelina
collection PubMed
description This review synthesizes knowledge on dark-induced barley, attached, leaf senescence (DILS) as a model and discusses the possibility of using this crop system for studying senescence and autophagy mechanisms. It addresses the recent progress made in our understanding of DILS. The following aspects are discussed: the importance of chloroplasts as early targets of DILS, the role of Rubisco as the largest repository of recoverable nitrogen in leaves senescing in darkness, morphological changes of these leaves other than those described for chloroplasts and metabolic modifications associated with them, DILS versus developmental leaf senescence transcriptomic differences, and finally the observation that in DILS autophagy participates in the circulation of cell components and acts as a quality control mechanism during senescence. Despite the progression of macroautophagy, the symptoms of degradation can be reversed. In the review, the question also arises how plant cells regulate stress-induced senescence via autophagy and how the function of autophagy switches between cell survival and cell death.
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spelling pubmed-80057112021-03-30 Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms Paluch-Lubawa, Ewelina Stolarska, Ewelina Sobieszczuk-Nowicka, Ewa Front Plant Sci Plant Science This review synthesizes knowledge on dark-induced barley, attached, leaf senescence (DILS) as a model and discusses the possibility of using this crop system for studying senescence and autophagy mechanisms. It addresses the recent progress made in our understanding of DILS. The following aspects are discussed: the importance of chloroplasts as early targets of DILS, the role of Rubisco as the largest repository of recoverable nitrogen in leaves senescing in darkness, morphological changes of these leaves other than those described for chloroplasts and metabolic modifications associated with them, DILS versus developmental leaf senescence transcriptomic differences, and finally the observation that in DILS autophagy participates in the circulation of cell components and acts as a quality control mechanism during senescence. Despite the progression of macroautophagy, the symptoms of degradation can be reversed. In the review, the question also arises how plant cells regulate stress-induced senescence via autophagy and how the function of autophagy switches between cell survival and cell death. Frontiers Media S.A. 2021-03-15 /pmc/articles/PMC8005711/ /pubmed/33790925 http://dx.doi.org/10.3389/fpls.2021.635619 Text en Copyright © 2021 Paluch-Lubawa, Stolarska and Sobieszczuk-Nowicka. 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) 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
Paluch-Lubawa, Ewelina
Stolarska, Ewelina
Sobieszczuk-Nowicka, Ewa
Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms
title Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms
title_full Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms
title_fullStr Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms
title_full_unstemmed Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms
title_short Dark-Induced Barley Leaf Senescence – A Crop System for Studying Senescence and Autophagy Mechanisms
title_sort dark-induced barley leaf senescence – a crop system for studying senescence and autophagy mechanisms
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8005711/
https://www.ncbi.nlm.nih.gov/pubmed/33790925
http://dx.doi.org/10.3389/fpls.2021.635619
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