Five Rice Seed-Specific NF-YC Genes Redundantly Regulate Grain Quality and Seed Germination via Interfering Gibberellin Pathway

文献类型： 外文期刊

第一作者： Xu, Huayu

作者： Xu, Huayu;Li, Shufan;Kazeem, Bello Babatunde;Ajadi, Abolore Adijat;Luo, Jinjin;Yin, Man;Liu, Xinyong;Chen, Lijuan;Ying, Jiezheng;Tong, Xiaohong;Wang, Yifeng;Zhang, Jian;Niu, Baixiao;Chen, Chen;Zeng, Xiaoshan

作者机构：

关键词： rice (Oryza sativa L; ); gibberellins; abscisic acid; NF-YCs

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：6.208； 五年影响因子：6.628 ）

ISSN：

年卷期： 2022 年 23 卷 15 期

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收录情况： SCI

摘要： NF-YCs are important transcription factors with diverse functions in the plant kingdoms including seed development. NF-YC8, 9, 10, 11 and 12 are close homologs with similar seed-specific expression patterns. Despite the fact that some of the NF-YCs are functionally known; their biological roles have not been systematically explored yet, given the potential functional redundancy. In this study, we generated pentuple mutant pnfyc of NF-YC8-12 and revealed their functions in the regulation of grain quality and seed germination. pnfyc grains displayed significantly more chalkiness with abnormal starch granule packaging. pnfyc seed germination and post-germination growth are much slower than the wild-type NIP, largely owing to the GA-deficiency as exogenous GA was able to fully recover the germination phenotype. The RNA-seq experiment identified a total of 469 differentially expressed genes, and several GA-, ABA- and grain quality control-related genes might be transcriptionally regulated by the five NF-YCs, as revealed by qRT-PCR analysis. The results demonstrated the redundant functions of NF-YC8-12 in regulating GA pathways that underpin rice grain quality and seed germination, and shed a novel light on the functions of the seed-specific NF-YCs.

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