文献类型： 外文期刊
作者： Zhang, Qi 1 ; Peng, Yuanxuan 1 ; Li, Xiumei 1 ; Chen, Bingxian 1 ; Liu, Jun 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Guangdong Prov Key Lab Crop Germplasm Resources P, Agrobiol Gene Res Ctr, Guangzhou 510640, Peoples R China
2.Zhongkai Univ Agr & Engn, Coll Agr & Biol, Guangzhou, Peoples R China
关键词： abscisic acid; beta-galactosidase; gibberellin; rice; seed germination
期刊名称：SEED SCIENCE AND TECHNOLOGY （ 影响因子：0.797； 五年影响因子：0.794 ）
ISSN： 0251-0952
年卷期： 2021 年 49 卷 3 期
页码：
收录情况： SCI
摘要： The purpose of this study was to explore the relationship between beta-galactosidase and rice seed germination. Exogenous beta-galactosidase (1 U) facilitated germination while abscisic acid (ABA) delayed germination. Histo-chemical staining and spectrophotometry revealed that the activity of endogenous beta-galactosidase increased gradually during germination. 1 mu M ABA and GA(4+7) could, respectively, inhibit and promote the activity of beta-galactosidase in the rice embryo. This indicated that the regulation of rice seed germination by these two phytohormones may be through mediation of beta-galactosidase activity. During seed germination, the transcriptional expressions of OsBAGL1, OsBAGL4, OsBAGL8 and OsBAGL11 were higher than those of other homologous genes, suggesting that these four genes may be involved in the germination process. GA(4+7) significantly increased the expression of the above four genes. By contrast, the transcriptional expression of OsBAGL8 and OsBAGL11 were significantly reduced by ABA, but not that of OsBAGL1 and OsBAGL4. Our study has important theoretical and practical significance for illustrating the relationship between beta-galactosidase and seed germination.
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