数字农科院2.0

Wsl9Encodes An Hnh Endonuclease Domain-Containing Protein That Is Essential For Early Chloroplast Development In Rice

文献类型： 外文期刊

作者： Zhu, XJ; Mou, CL; Zhang, FL; Huang, YS; Yang, CY; Ji, JL; Liu, X; Cao, PH; Nguyen, T; Lan, J; Zhou, CL; Liu, SJ; Jiang, L; Wan, JM

作者机构：

关键词： Oryza Sativa; Chloroplasts; Rna Splicing

期刊名称： RICE

ISSN： 1939-8425

年卷期： 2020 年 13 卷 1 期

页码：

收录情况： JCR（2021版）

摘要： Background The plant chloroplast is essential for photosynthesis and other cellular processes, but an understanding of the biological mechanisms of plant chloroplast development are incomplete. Results A new temperature-sensitivewhite stripe leaf 9(wsl9)rice mutant is described. The mutant develops white stripes during early leaf development, but becomes green after the three-leaf stage under field conditions. Thewsl9mutant was albinic when grown at low temperature. Gene mapping of theWSL9locus, together with complementation tests indicated thatWSL9encodes a novel protein with an HNH domain.WSL9was expressed in various tissues. Under low temperature, thewsl9mutation caused defects in splicing ofrpl2, but increased the editing efficiency ofrpoB.Expression levels of plastid genome-encoded genes, which are transcribed by plastid-coded RNA polymerase (PEP), chloroplast development genes and photosynthesis-related genes were altered in thewsl9mutant. Conclusion WSL9encodes an HNH endonuclease domain-containing protein that is essential for early chloroplast development. Our study provides opportunities for further research on regulatory mechanisms of chloroplast development in rice.

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