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Response of Lignin Metabolism to Light Quality in Wheat Population

The low red/far-red (R/FR) light proportion at the base of the high-density wheat population leads to poor stem quality and increases lodging risk. We used Shannong 23 and Shannong 16 as the test materials. By setting three-light quality treatments: normal light (CK), red light (RL), and far-red lig...

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Autores principales: Li, Chunhui, Luo, Yongli, Jin, Min, Sun, Shufang, Wang, Zhenlin, Li, Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473876/
https://www.ncbi.nlm.nih.gov/pubmed/34589105
http://dx.doi.org/10.3389/fpls.2021.729647
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author Li, Chunhui
Luo, Yongli
Jin, Min
Sun, Shufang
Wang, Zhenlin
Li, Yong
author_facet Li, Chunhui
Luo, Yongli
Jin, Min
Sun, Shufang
Wang, Zhenlin
Li, Yong
author_sort Li, Chunhui
collection PubMed
description The low red/far-red (R/FR) light proportion at the base of the high-density wheat population leads to poor stem quality and increases lodging risk. We used Shannong 23 and Shannong 16 as the test materials. By setting three-light quality treatments: normal light (CK), red light (RL), and far-red light (FRL), we irradiated the base internodes of the stem with RL and FRL for 7h. Our results showed that RL irradiation enhanced stem quality, as revealed by increased breaking strength, stem diameter, wall thickness and, dry weight per unit length, and the total amount of lignin and related gene expression increased, at the same time. The composition of lignin subunits was related to the lodging resistance of wheat. The proportion of S+G subunits and H subunits played a key role in wheat lodging resistance. RL could increase the content of S subunits and G subunits and the proportion of S+G subunits, reduce the proportion of H subunits. We described here, to the best of our knowledge, the systematic study of the mechanism involved in the regulation of stem breaking strength by light quality, particularly the effect of light quality on lignin biosynthesis and its relationship with lodging resistance in wheat.
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spelling pubmed-84738762021-09-28 Response of Lignin Metabolism to Light Quality in Wheat Population Li, Chunhui Luo, Yongli Jin, Min Sun, Shufang Wang, Zhenlin Li, Yong Front Plant Sci Plant Science The low red/far-red (R/FR) light proportion at the base of the high-density wheat population leads to poor stem quality and increases lodging risk. We used Shannong 23 and Shannong 16 as the test materials. By setting three-light quality treatments: normal light (CK), red light (RL), and far-red light (FRL), we irradiated the base internodes of the stem with RL and FRL for 7h. Our results showed that RL irradiation enhanced stem quality, as revealed by increased breaking strength, stem diameter, wall thickness and, dry weight per unit length, and the total amount of lignin and related gene expression increased, at the same time. The composition of lignin subunits was related to the lodging resistance of wheat. The proportion of S+G subunits and H subunits played a key role in wheat lodging resistance. RL could increase the content of S subunits and G subunits and the proportion of S+G subunits, reduce the proportion of H subunits. We described here, to the best of our knowledge, the systematic study of the mechanism involved in the regulation of stem breaking strength by light quality, particularly the effect of light quality on lignin biosynthesis and its relationship with lodging resistance in wheat. Frontiers Media S.A. 2021-09-13 /pmc/articles/PMC8473876/ /pubmed/34589105 http://dx.doi.org/10.3389/fpls.2021.729647 Text en Copyright © 2021 Li, Luo, Jin, Sun, Wang and Li. 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
Li, Chunhui
Luo, Yongli
Jin, Min
Sun, Shufang
Wang, Zhenlin
Li, Yong
Response of Lignin Metabolism to Light Quality in Wheat Population
title Response of Lignin Metabolism to Light Quality in Wheat Population
title_full Response of Lignin Metabolism to Light Quality in Wheat Population
title_fullStr Response of Lignin Metabolism to Light Quality in Wheat Population
title_full_unstemmed Response of Lignin Metabolism to Light Quality in Wheat Population
title_short Response of Lignin Metabolism to Light Quality in Wheat Population
title_sort response of lignin metabolism to light quality in wheat population
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473876/
https://www.ncbi.nlm.nih.gov/pubmed/34589105
http://dx.doi.org/10.3389/fpls.2021.729647
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