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Molecular genetic bases of seed resistance to oxidative stress during storage

Conservation of plant genetic diversity, including economically important crops, is the foundation for food safety. About 90 % of the world’s crop genetic diversity is stored as seeds in genebanks. During storage seeds suffer physiological stress consequences, one of which is the accumulation of fre...

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Autores principales: Shvachko, N.А., Khlestkina, E.K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Federal Research Center Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7716554/
https://www.ncbi.nlm.nih.gov/pubmed/33659828
http://dx.doi.org/10.18699/VJ20.47-o
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author Shvachko, N.А.
Khlestkina, E.K.
author_facet Shvachko, N.А.
Khlestkina, E.K.
author_sort Shvachko, N.А.
collection PubMed
description Conservation of plant genetic diversity, including economically important crops, is the foundation for food safety. About 90 % of the world’s crop genetic diversity is stored as seeds in genebanks. During storage seeds suffer physiological stress consequences, one of which is the accumulation of free radicals, primarily reactive oxygen species (ROS). An increase in ROS leads to oxidative stress, which negatively affects the quality of seeds and can lead to a complete loss of their viability. The review summarizes data on biochemical processes that affect seed longevity. The data on the destructive effect of free radicals towards plant cell macromolecules are analyzed, and the ways to eliminate excessive ROS in plants, the most important of which is the glutathioneascorbate pathway, are discussed. The relationship between seed dormancy and seed longevity is examined. Studying seeds of different plant species revealed a negative correlation between seed dormancy and longevity, while various authors who researched Arabidopsis seeds reported both positive and negative correlations between dormancy and seed longevity. A negative correlation between seed dormancy and viability probably means that seeds are able to adapt to changing environmental conditions. This review provides a summary of Arabidopsis genes associated with seed viability. By now, a significant number of loci and genes affecting seed longevity have been identified. This review contains a synopsis of modern studies on the viability of barley seeds. QTLs associated with barley seed longevity were identified on chromosomes 2H, 5H and 7H. In the QTL regions studied, the Zeo1, Ale, nud, nadp-me, and HvGR genes were identified. However, there is still no definite answer as to which genes would serve as markers of seed viability in a certain plant species.
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spelling pubmed-77165542021-03-02 Molecular genetic bases of seed resistance to oxidative stress during storage Shvachko, N.А. Khlestkina, E.K. Vavilovskii Zhurnal Genet Selektsii Review Conservation of plant genetic diversity, including economically important crops, is the foundation for food safety. About 90 % of the world’s crop genetic diversity is stored as seeds in genebanks. During storage seeds suffer physiological stress consequences, one of which is the accumulation of free radicals, primarily reactive oxygen species (ROS). An increase in ROS leads to oxidative stress, which negatively affects the quality of seeds and can lead to a complete loss of their viability. The review summarizes data on biochemical processes that affect seed longevity. The data on the destructive effect of free radicals towards plant cell macromolecules are analyzed, and the ways to eliminate excessive ROS in plants, the most important of which is the glutathioneascorbate pathway, are discussed. The relationship between seed dormancy and seed longevity is examined. Studying seeds of different plant species revealed a negative correlation between seed dormancy and longevity, while various authors who researched Arabidopsis seeds reported both positive and negative correlations between dormancy and seed longevity. A negative correlation between seed dormancy and viability probably means that seeds are able to adapt to changing environmental conditions. This review provides a summary of Arabidopsis genes associated with seed viability. By now, a significant number of loci and genes affecting seed longevity have been identified. This review contains a synopsis of modern studies on the viability of barley seeds. QTLs associated with barley seed longevity were identified on chromosomes 2H, 5H and 7H. In the QTL regions studied, the Zeo1, Ale, nud, nadp-me, and HvGR genes were identified. However, there is still no definite answer as to which genes would serve as markers of seed viability in a certain plant species. The Federal Research Center Institute of Cytology and Genetics of Siberian Branch of the Russian Academy of Sciences 2020-08 /pmc/articles/PMC7716554/ /pubmed/33659828 http://dx.doi.org/10.18699/VJ20.47-o Text en Copyright © AUTHORS, 2018 https://creativecommons.org/licenses/by/2.5/This work is licensed under a Creative Commons Attribution 4.0 License
spellingShingle Review
Shvachko, N.А.
Khlestkina, E.K.
Molecular genetic bases of seed resistance to oxidative stress during storage
title Molecular genetic bases of seed resistance to oxidative stress during storage
title_full Molecular genetic bases of seed resistance to oxidative stress during storage
title_fullStr Molecular genetic bases of seed resistance to oxidative stress during storage
title_full_unstemmed Molecular genetic bases of seed resistance to oxidative stress during storage
title_short Molecular genetic bases of seed resistance to oxidative stress during storage
title_sort molecular genetic bases of seed resistance to oxidative stress during storage
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7716554/
https://www.ncbi.nlm.nih.gov/pubmed/33659828
http://dx.doi.org/10.18699/VJ20.47-o
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