GmPLP1, a PAS/LOV protein, functions as a possible new type of blue light photoreceptor in soybean

文献类型： 外文期刊

第一作者： Li, Yongguang

作者： Li, Yongguang;Zhang, Yanzheng;Li, Mengting;Jing, Ya;Zhang, Yuhang;Zhao, Lin;Li, Wenbin;Luo, Qiulan;Luo, Qiulan;Mallano, Ali Inayat

作者机构：

关键词： Glycine max L. Merrill;Blue light;PAS/LOV protein;Circadian clock;Arabidopsis thaliana

期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）

ISSN： 0378-1119

年卷期： 2018 年 645 卷

页码：

收录情况： SCI

摘要： Light is one of the most important environmental factors for the growth and development of plants. To adapt to changes in day length, the photoreception and transmission of the light signals in plants mainly depend on the various light receptor proteins. The PAS/LOV protein (PLP) has a PAS domain in the N-terminal and LOV domain in the C-terminal and has been confirmed as a new type of blue light receptor in Arabidopsis thaliana. However, the role of its counterpart in soybean remains largely unclear. In this study, the expression pattern of the GmPLP1 under different light qualities was determined by real-time RT-PCR analysis using the cultivar `DongNong 42', a photosensitive soybean cultivar, suggesting that GrnPLP1 was affected by the circadian clock and was a dark induced gene. Moreover, the mRNA abundance increased significantly under blue light. Further analysis revealed that overexpression of GmPLP1 displayed the inhibition of hypocotyl elongation under blue light, and the expression of CRY1, CRY2, CKL3, CKL4, BIT1, and HY5 were simultaneously increased in GrnPLP1-transgenic Arabidopsis, suggesting that the shortened hypocotyl was associated with the up-regulation of these genes. Taken together, our results suggest that GmPLPI, which is a new possible type of blue light photoreceptor in soybean, plays an important role in the blue light signaling pathway.

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