Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage

Abstract Plant growth and development are tightly regulated by phytohormones. However, little is known about the interaction between auxin and gibberellin acid (GA) during flower stalk elongation and how it is directly related to organ formation. Therefore, the effects of indole acetic acid (IAA) an...

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Autores principales:	Erfeng Kou, Xinmin Huang, Yunna Zhu, Wei Su, Houcheng Liu, Guangwen Sun, Riyuan Chen, Yanwei Hao, Shiwei Song
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/eca0d63293b849f8bac84e8039d0a9fa
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spelling	oai:doaj.org-article:eca0d63293b849f8bac84e8039d0a9fa2021-12-02T10:54:24ZCrosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage10.1038/s41598-021-83519-z2045-2322https://doaj.org/article/eca0d63293b849f8bac84e8039d0a9fa2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83519-zhttps://doaj.org/toc/2045-2322Abstract Plant growth and development are tightly regulated by phytohormones. However, little is known about the interaction between auxin and gibberellin acid (GA) during flower stalk elongation and how it is directly related to organ formation. Therefore, the effects of indole acetic acid (IAA) and GA3 treatments and their interaction on flower stalk elongation in flowering Chinese cabbage were investigated. The growth of flowering Chinese cabbage is regulated by IAA and GA3, and the opposite results were observed after treatments with uniconazole (GA synthesis inhibitor) and N-1-naphthylphthalamic acid (NPA) (auxin transport inhibitor). Anatomical analysis of the pith region in stalks revealed that IAA promoted expansion via signal transduction and transport pathways. GA3 regulated the elongation of flower stalks by controlling GA synthesis and partially controlling the IAA signaling pathway. GA3 also had a stronger effect on stalk elongation than IAA. The results of qRT-PCR and histological analysis revealed that GA3 and IAA induced the expansion of cell walls by activating the expression of genes encoding cell wall structural proteins such as Expansin (EXP). These findings provide new insights into the mechanism of stalk formation regulated by the combination of IAA and GA3.Erfeng KouXinmin HuangYunna ZhuWei SuHoucheng LiuGuangwen SunRiyuan ChenYanwei HaoShiwei SongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Erfeng Kou Xinmin Huang Yunna Zhu Wei Su Houcheng Liu Guangwen Sun Riyuan Chen Yanwei Hao Shiwei Song Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
description	Abstract Plant growth and development are tightly regulated by phytohormones. However, little is known about the interaction between auxin and gibberellin acid (GA) during flower stalk elongation and how it is directly related to organ formation. Therefore, the effects of indole acetic acid (IAA) and GA3 treatments and their interaction on flower stalk elongation in flowering Chinese cabbage were investigated. The growth of flowering Chinese cabbage is regulated by IAA and GA3, and the opposite results were observed after treatments with uniconazole (GA synthesis inhibitor) and N-1-naphthylphthalamic acid (NPA) (auxin transport inhibitor). Anatomical analysis of the pith region in stalks revealed that IAA promoted expansion via signal transduction and transport pathways. GA3 regulated the elongation of flower stalks by controlling GA synthesis and partially controlling the IAA signaling pathway. GA3 also had a stronger effect on stalk elongation than IAA. The results of qRT-PCR and histological analysis revealed that GA3 and IAA induced the expansion of cell walls by activating the expression of genes encoding cell wall structural proteins such as Expansin (EXP). These findings provide new insights into the mechanism of stalk formation regulated by the combination of IAA and GA3.
format	article
author	Erfeng Kou Xinmin Huang Yunna Zhu Wei Su Houcheng Liu Guangwen Sun Riyuan Chen Yanwei Hao Shiwei Song
author_facet	Erfeng Kou Xinmin Huang Yunna Zhu Wei Su Houcheng Liu Guangwen Sun Riyuan Chen Yanwei Hao Shiwei Song
author_sort	Erfeng Kou
title	Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
title_short	Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
title_full	Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
title_fullStr	Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
title_full_unstemmed	Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage
title_sort	crosstalk between auxin and gibberellin during stalk elongation in flowering chinese cabbage
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/eca0d63293b849f8bac84e8039d0a9fa
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Crosstalk between auxin and gibberellin during stalk elongation in flowering Chinese cabbage

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