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Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage

Seed deterioration due to ageing strongly affects both germplasm preservation and agricultural production. Decelerating seed deterioration and boosting seed viability become increasingly urgent. The loss of seed viability is inevitable even under cold storage. For species with short-lived seed or fo...

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Autores principales: Xu, Ling-xiang, Xin, Xia, Yin, Guang-kun, Zhou, Ji, Zhou, Yuan-chang, Lu, Xin-xiong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411016/
https://www.ncbi.nlm.nih.gov/pubmed/32764704
http://dx.doi.org/10.1038/s41598-020-70189-6
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author Xu, Ling-xiang
Xin, Xia
Yin, Guang-kun
Zhou, Ji
Zhou, Yuan-chang
Lu, Xin-xiong
author_facet Xu, Ling-xiang
Xin, Xia
Yin, Guang-kun
Zhou, Ji
Zhou, Yuan-chang
Lu, Xin-xiong
author_sort Xu, Ling-xiang
collection PubMed
description Seed deterioration due to ageing strongly affects both germplasm preservation and agricultural production. Decelerating seed deterioration and boosting seed viability become increasingly urgent. The loss of seed viability is inevitable even under cold storage. For species with short-lived seed or for regions with poor preservation infrastructure where cold storage is not readily available, seed enhancement is more reliable to increase seed viability and longevity. Antioxidant priming as a way of seed enhancement usually improves seed germination. As for post-priming survival, however, significant uncertainty exists. The controversy lies particularly on seeds of high germination percentage (GP > 95%) whose viability is hardly improvable and the benefits of priming depend on prolonging seed longevity. Therefore, this study timed antioxidant priming to prolong the longevity of high-viability seeds under artificially accelerated ageing (AAA). Rice (Nipponbare) seeds (GP > 97%) under room-temperature-storage (RTS) for 6 months. were resistant to AAA first with little viability loss for a certain period, the resistant stage. This resistance gradually vanished without GP change, during a prolonged RTS period which was named the vulnerable stage. According to the results, although antioxidant priming severely curtailed the resistant stage for seeds with a long plateau in the survival curve, it decelerated viability loss for seeds in the vulnerable stage. In complement to seed storage, priming potentially retains high seed GP which would decrease without seed enhancement. To maximize the benefits of priming for high-GP seeds, two time points are advised as the start of a time window for priming: (1) just at the end of the resistant stage without notable viability loss, which is hard to grasp by GP monitoring; (2) slight but identifiable GP decline.
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spelling pubmed-74110162020-08-07 Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage Xu, Ling-xiang Xin, Xia Yin, Guang-kun Zhou, Ji Zhou, Yuan-chang Lu, Xin-xiong Sci Rep Article Seed deterioration due to ageing strongly affects both germplasm preservation and agricultural production. Decelerating seed deterioration and boosting seed viability become increasingly urgent. The loss of seed viability is inevitable even under cold storage. For species with short-lived seed or for regions with poor preservation infrastructure where cold storage is not readily available, seed enhancement is more reliable to increase seed viability and longevity. Antioxidant priming as a way of seed enhancement usually improves seed germination. As for post-priming survival, however, significant uncertainty exists. The controversy lies particularly on seeds of high germination percentage (GP > 95%) whose viability is hardly improvable and the benefits of priming depend on prolonging seed longevity. Therefore, this study timed antioxidant priming to prolong the longevity of high-viability seeds under artificially accelerated ageing (AAA). Rice (Nipponbare) seeds (GP > 97%) under room-temperature-storage (RTS) for 6 months. were resistant to AAA first with little viability loss for a certain period, the resistant stage. This resistance gradually vanished without GP change, during a prolonged RTS period which was named the vulnerable stage. According to the results, although antioxidant priming severely curtailed the resistant stage for seeds with a long plateau in the survival curve, it decelerated viability loss for seeds in the vulnerable stage. In complement to seed storage, priming potentially retains high seed GP which would decrease without seed enhancement. To maximize the benefits of priming for high-GP seeds, two time points are advised as the start of a time window for priming: (1) just at the end of the resistant stage without notable viability loss, which is hard to grasp by GP monitoring; (2) slight but identifiable GP decline. Nature Publishing Group UK 2020-08-06 /pmc/articles/PMC7411016/ /pubmed/32764704 http://dx.doi.org/10.1038/s41598-020-70189-6 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Xu, Ling-xiang
Xin, Xia
Yin, Guang-kun
Zhou, Ji
Zhou, Yuan-chang
Lu, Xin-xiong
Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
title Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
title_full Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
title_fullStr Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
title_full_unstemmed Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
title_short Timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
title_sort timing for antioxidant-priming against rice seed ageing: optimal only in non-resistant stage
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7411016/
https://www.ncbi.nlm.nih.gov/pubmed/32764704
http://dx.doi.org/10.1038/s41598-020-70189-6
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