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Comparative Metabolome and Transcriptome Analysis Reveals the Possible Roles of Rice Phospholipase A Genes in the Accumulation of Oil in Grains

文献类型： 外文期刊

作者： Cao, Huasheng 1 ; Gong, Rong 1 ; Xiong, Liang 1 ; Wang, Fujun 1 ; Gu, Haiyong 1 ; Li, Shuguang 1 ; He, Gao 1 ; Liang, Shihu 1 ; Luo, Wenyong 1 ; Qiu, Xianjin 5 ;

作者机构： 1.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou 510640, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Genet & Breeding High Qual Rice Southern C, Guangzhou 510640, Peoples R China

3.Guangdong Key Lab New Technol Rice Breeding, Guangzhou 510640, Peoples R China

4.Guangdong Rice Engn Lab, Guangzhou 510640, Peoples R China

5.Yangte Univ, Coll Agr, Jingzhou 434025, Peoples R China

关键词： rice grains; comparative metabolome and transcriptome; phospholipase A; oil quality

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）

ISSN： 1661-6596

年卷期： 2024 年 25 卷 21 期

页码：

收录情况： SCI

摘要： The phospholipase A (PLA) gene family plays a crucial role in the regulation of plant growth, development and stress response. Although PLA genes have been identified in various plant species, their specific functions and characteristics in oil quality formation of rice grains (Oryza sativa L.) have not been studied yet. Here, we identified and characterized 35 rice PLA genes, which were divided into three subgroups based on gene structures and phylogenetic relationships. These genes are distributed unevenly across 11 rice chromosomes. The promoter sequence of rice PLAs contain multiple plant hormones and stress-related elements. Gene expression analyses in various tissues and under stress conditions indicated that PLAs may be involved in rice growth, development and stress response. In addition, metabolomics, transcriptomics and qRT-PCR analyses between two rice varieties Guang8B (G8B, high oil content) and YueFengB (YFB, low oil content) revealed that the different expressional levels of rice PLA genes were closely related to the differences in the oil content between 'G8B' and 'YFB' grains. The findings of this study provide potential novel insights into the molecular information of the phospholipase A gene family in rice, and underscore the potential functions of PLA genes in rice oil content accumulation, providing valuable resources for future genetic improvement and breeding strategies.

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