期刊论文详细信息
BMC Plant Biology
Analysis of gene expression in early seed germination of rice: landscape and genetic regulation
Guanjie Wang1  Xiaozheng Li2  Haoxuan Li3  Guanqun Wang4  Jianhua Zhang5 
[1] College of Life Sciences, Jilin Agricultural University, Jilin, China;Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, 518060, Shenzhen, China;Guangdong Key Laboratory of Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, 518060, Shenzhen, China;School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China;Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong, China;School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China;School of Life Sciences and State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Shatin, Hong Kong, China;Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong, China;
关键词: Oryza sativa;    Early seed germination;    Physiological characteristic;    Transcriptome;    Transcription factors;   
DOI  :  10.1186/s12870-022-03458-3
来源: Springer
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【 摘 要 】

BackgroundSeed germination is a crucial process, which determines the initiation of seed plant life cycle. The early events during this important life cycle transition that called early seed germination is defined as initially water uptake plus radicle growing out of the covering seed layers. However, a specific genome-wide analysis of early seed germination in rice is still obscure.ResultsIn this study, the physiological characteristics of rice seed during seed germination are determined to define key points of early seed germination. Transcriptome analyses of early phase of seed germination provided deeper insight into the genetic regulation landscape. Many genes involved in starch-to-sucrose transition were differentially expressed, especially alpha-amylase 1b and beta-amylase 2, which were predominantly expressed. Differential exon usage (DEU) genes were identified, which were significantly enriched in the pathway of starch and sucrose metabolism, indicating that DEU events were critical for starch-to-sucrose transition at early seed germination. Transcription factors (TFs) were also dramatic expressed, including the abscisic acid (ABA) responsive gene, OsABI5, and gibberellic acid (GA) responsive genes, GAI. Moreover, GAI transactivated GA responsive gene, GAMYB in vivo, indicating a potential pathway involved in early seed germination process. In addition, CBL-interacting protein kinase (CIPK) genes, such as CIPK13, CIPK14 and CIPK17 were potentially interacted with other proteins, indicating its pivotal role at early seed germination.ConclusionTaken together, gene regulation of early seed germination in rice was complex and protein-to-gene or protein-to-protein interactions were indispensable.

【 授权许可】

CC BY   

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