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综合形态学、代谢组学和转录组学分析揭示了外源赤霉素促进叶柄伸长的机制。

Integrated morphological, metabolome, and transcriptome analyses revealed the mechanism of exogenous gibberellin promoting petiole elongation in .

作者信息

Feng Kai, Li Xibei, Yan Yajie, Liu Ruozhenyi, Li Zixuan, Sun Nan, Yang Zhiyuan, Zhao Shuping, Wu Peng, Li Liangjun

机构信息

College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou, China.

Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, China.

出版信息

Front Plant Sci. 2023 Jul 17;14:1225635. doi: 10.3389/fpls.2023.1225635. eCollection 2023.

DOI:10.3389/fpls.2023.1225635
PMID:37528973
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10389089/
Abstract

(Blume) DC. is a popular vegetable with unique flavor and its leaf is the main product organ. Gibberellin (GA) is an important plant hormone that plays vital roles in regulating the growth of plants. In this study, the plants of water dropwort were treated with different concentrations of GA. The plant height of water dropwort was significantly increased after GA treatment. Anatomical structure analysis indicated that the cell length of water dropwort was elongated under exogenous application of GA. The metabolome analysis showed flavonoids were the most abundant metabolites and the biosynthesis of secondary metabolites were also regulated by GA. The exogenous application of GA altered the gene expressions of plant hormone signal transduction ( and ) and metabolites biosynthesis pathways to regulate the growth of water dropwort. The GA contents were modulated by up-regulating the expression of GA metabolism gene . The differentially expressed genes related to cell wall formation were significantly enriched. A total of 22 cellulose synthase involved in cellulose biosynthesis were identified from the genome of water dropwort. Our results indicated that GA treatment promoted the cell elongation by inducing the expression of cellulose synthase and cell wall formation in water dropwort. These results revealed the molecular mechanism of GA-mediated cell elongation, which will provide valuable reference for using GA to regulate the growth of water dropwort.

摘要

（水芹）水芹是一种具有独特风味的受欢迎蔬菜，其叶片是主要的产品器官。赤霉素（GA）是一种重要的植物激素，在调节植物生长中起着至关重要的作用。在本研究中，用水芹植株进行了不同浓度GA处理。GA处理后水芹的株高显著增加。解剖结构分析表明，外源施加GA时水芹的细胞长度拉长。代谢组分析显示黄酮类化合物是最丰富的代谢物，次生代谢物的生物合成也受GA调节。外源施加GA改变了植物激素信号转导（和）的基因表达以及代谢物生物合成途径，从而调节水芹的生长。GA含量通过上调GA代谢基因的表达来调节。与细胞壁形成相关的差异表达基因显著富集。从水芹基因组中鉴定出总共22个参与纤维素生物合成的纤维素合酶。我们的结果表明，GA处理通过诱导纤维素合酶的表达和水芹细胞壁的形成促进细胞伸长。这些结果揭示了GA介导细胞伸长的分子机制，这将为利用GA调节水芹生长提供有价值的参考。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/ae1380b6f79c/fpls-14-1225635-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/cff9813f8ef6/fpls-14-1225635-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/4b8988d09ee3/fpls-14-1225635-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/401d8fc714f1/fpls-14-1225635-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/69afd7713080/fpls-14-1225635-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/d5217a4ac87e/fpls-14-1225635-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/4962ddb8c683/fpls-14-1225635-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/24c5db9afb2c/fpls-14-1225635-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/4753c189b9df/fpls-14-1225635-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/ae1380b6f79c/fpls-14-1225635-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/cff9813f8ef6/fpls-14-1225635-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/4b8988d09ee3/fpls-14-1225635-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/401d8fc714f1/fpls-14-1225635-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/69afd7713080/fpls-14-1225635-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/d5217a4ac87e/fpls-14-1225635-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/4962ddb8c683/fpls-14-1225635-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/24c5db9afb2c/fpls-14-1225635-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/4753c189b9df/fpls-14-1225635-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/098a/10389089/ae1380b6f79c/fpls-14-1225635-g009.jpg

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