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Identification and expression analysis of YABBY family genes in Platycodon grandiflorus

生物 基因 转录因子 转录组 干旱胁迫 植物 基因表达 遗传学
作者
Lingyang Kong,Jiaying Sun,Zhehui Jiang,Weichao Ren,Zhen Wang,Meiqi Zhang,Xiubo Liu,Limin Wang,Wei Ma,Jinsong Xu
出处
期刊:Plant Signaling & Behavior [Informa]
卷期号:18 (1) 被引量:2
标识
DOI:10.1080/15592324.2022.2163069
摘要

Platycodon grandiflorus set ornamental, edible, and medicinal plant with broad prospects for further application development. However, there are no reports on the YABBY transcription factor in P. grandiflorus. Identification and analysis of the YABBY gene family of P. grandiflorus using bioinformatics means. Six YABBY genes were identified and divided into five subgroups. Transcriptome data and qRT-PCR were used to analyze the expression patterns of YABBY. YABBY genes exhibited organ-specific patterns in expression in P grandiflorus. Upon salt stress and drought induction, P. grandiflorus presented different morphological and physiological changes with some dynamic changes. Under salt treatment, the YABBY gene family was down-regulated; PgYABBY5 was up-regulated in leaves at 24 h. In drought treatment, PgYABBY1, PgYABBY2, and PgYABBY3 were down-regulated to varying degrees, but PgYABBY3 was significantly up-regulated in the roots. PgYABBY5 was up-regulated gradually after being down-regulated. PgYABBY5 was significantly up-regulated in stem and leaf at 48 h. PgYABBY6 was down-regulated at first and then significantly up-regulated. The dynamic changes of salt stress and drought stress can be regarded as the responses of plants to resist damage. During the whole process of salt and drought stress treatment, the protein content of each tissue part of P grandiflorus changed continuously. At the same time, we found that the promoter region of the PgYABBY gene contains stress-resistant elements, and the regulatory role of YABBY transcription factor in the anti-stress mechanism of P grandiflorus remains to be studied. PgYABBY1, PgYABBY2, and PgYABBY5 may be involved in the regulation of saponins in P. grandiflorus. PgYABBY5 may be involved in the drought resistance mechanism in P. grandiflorus stems and leaves. This study may provide a theoretical basis for studying the regulation of terpenoids by the YABBY transcription factor and its resistance to abiotic stress.
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