GA suppresses the conversion from α-linolenic acid to JA through the GhGAI1-GhMYC3-GhLOX3 module to promote cotton fiber elongation

Bibliographische Detailangaben
Veröffentlicht in:	Plant science : an international journal of experimental plant biology. - 1985. - 360(2025) vom: 25. Sept., Seite 112716
1. Verfasser:	Zhu, Xi (VerfasserIn)
Weitere Verfasser:	Suo, Qingwei, Ding, Bo, Zeng, Jianyan, Yang, Yang, Yang, Yumei, Hu, Rongyu, Jiang, Linzhu, Li, Silu, Zhang, Huiming, Wang, Yi, Zhang, Mi, Pei, Yan, Hou, Lei
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2025
Zugriff auf das übergeordnete Werk:	Plant science : an international journal of experimental plant biology
Schlagworte:	Journal Article Cell elongation Cotton fiber Gibberellin Jasmonic acid Linolenic acid metabolism Lipoxygenase Gibberellins Oxylipins alpha-Linolenic Acid mehr... 0RBV727H71 Cyclopentanes jasmonic acid 6RI5N05OWW Plant Growth Regulators Plant Proteins


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024	7		\|a 10.1016/j.plantsci.2025.112716 \|2 doi
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100	1		\|a Zhu, Xi \|e verfasserin \|4 aut
245	1	0	\|a GA suppresses the conversion from α-linolenic acid to JA through the GhGAI1-GhMYC3-GhLOX3 module to promote cotton fiber elongation
264		1	\|c 2025
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500			\|a Date Completed 16.09.2025
500			\|a Date Revised 16.09.2025
500			\|a published: Print-Electronic
500			\|a Citation Status MEDLINE
520			\|a Copyright © 2025 Elsevier B.V. All rights reserved.
520			\|a Cotton fibers are essential raw materials for the textile industry and serve as a classical model for studying cell elongation. During the elongation phase, cotton fibers accumulate significant amounts of linolenic acid, which is an essential component of cell membranes and a key precursor for jasmonic acid (JA) biosynthesis. Although JA is known to play a critical role in fiber development, the regulatory mechanisms governing the conversion of linolenic acid to JA remain largely unknown. Our study compared linolenic acid metabolism in elongating cotton fibers with that in roots and seed coats. We discovered that JA biosynthesis from linolenic acid is specifically suppressed in elongating fibers. We further identified gibberellin as a key regulator of linolenic acid metabolism through a DELLA protein-mediated pathway. Specifically, high levels of gibberellin in rapidly elongating fibers promote the degradation of the DELLA protein GhGAI1. This degradation facilitates the interaction between GhJAZ3 and GhMYC3, a transcriptional factor of the lipoxygenase gene, GhLOX3, ultimately inhibiting JA biosynthesis. Our findings illuminate how gibberellin precisely balances JA suppression with high linolenic acid accumulation to drive rapid fiber elongation, offering promising targets for enhancing cotton fiber quality
650		4	\|a Journal Article
650		4	\|a Cell elongation
650		4	\|a Cotton fiber
650		4	\|a Gibberellin
650		4	\|a Jasmonic acid
650		4	\|a Linolenic acid metabolism
650		4	\|a Lipoxygenase
650		7	\|a Gibberellins \|2 NLM
650		7	\|a Oxylipins \|2 NLM
650		7	\|a alpha-Linolenic Acid \|2 NLM
650		7	\|a 0RBV727H71 \|2 NLM
650		7	\|a Cyclopentanes \|2 NLM
650		7	\|a jasmonic acid \|2 NLM
650		7	\|a 6RI5N05OWW \|2 NLM
650		7	\|a Plant Growth Regulators \|2 NLM
650		7	\|a Plant Proteins \|2 NLM
700	1		\|a Suo, Qingwei \|e verfasserin \|4 aut
700	1		\|a Ding, Bo \|e verfasserin \|4 aut
700	1		\|a Zeng, Jianyan \|e verfasserin \|4 aut
700	1		\|a Yang, Yang \|e verfasserin \|4 aut
700	1		\|a Yang, Yumei \|e verfasserin \|4 aut
700	1		\|a Hu, Rongyu \|e verfasserin \|4 aut
700	1		\|a Jiang, Linzhu \|e verfasserin \|4 aut
700	1		\|a Li, Silu \|e verfasserin \|4 aut
700	1		\|a Zhang, Huiming \|e verfasserin \|4 aut
700	1		\|a Wang, Yi \|e verfasserin \|4 aut
700	1		\|a Zhang, Mi \|e verfasserin \|4 aut
700	1		\|a Pei, Yan \|e verfasserin \|4 aut
700	1		\|a Hou, Lei \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t Plant science : an international journal of experimental plant biology \|d 1985 \|g 360(2025) vom: 25. Sept., Seite 112716 \|w (DE-627)NLM098174193 \|x 1873-2259 \|7 nnas
773	1	8	\|g volume:360 \|g year:2025 \|g day:25 \|g month:09 \|g pages:112716
856	4	0	\|u http://dx.doi.org/10.1016/j.plantsci.2025.112716 \|3 Volltext
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