Overexpression of OsZHD1, a zinc finger homeodomain class homeobox transcription factor, induces abaxially curled and drooping leaf in rice

文献类型： 外文期刊

第一作者： Xu, Yang

作者： Xu, Yang;Wang, Yihua;Long, Qizhang;Huang, Jiexue;Wang, Yunlong;Zhou, Kunneng;Zheng, Ming;Sun, Juan;Chen, Hong;Chen, Saihua;Jiang, Ling;Wang, Chunming;Wan, Jianmin;Wan, Jianmin

作者机构：

关键词： Oryza Sativa L.;Rolled leaf;ZF-HD transcription factor;Bulliform cells

期刊名称：PLANTA （ 影响因子：4.116； 五年影响因子：4.316 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： eaf rolling is receiving considerable attention as an important agronomic trait in rice (Oryza sativa L.). However, little has been known on the molecular mechanism of rice leaf rolling, especially the abaxial rolling. We identified a novel abaxially curled and drooping leaf-dominant mutant from a T_1 transgenic rice line. The abaxially curled leaf phenotypes, co-segregating with the inserted transferred DNA, were caused by overexpression of a zinc finger homeodomain class homeobox transcription factor (OsZHD1). OsZHD1 exhibited a constitutive expression pattern in wild-type plants and accumulated in the developing leaves and panicles. Artificial overexpression of OsZHD1 or its closest homolog OsZHD2 induced the abaxial leaf curling. Histological analysis indicated that both the increased number and the abnormal arrangement of bulliform cells in leaf were responsible for the abaxially curled leaves. We herein reported OsZHD1 with key roles in rice morphogenesis, especially in the modulating of leaf rolling, which provided a novel insight into the molecular mechanism of leaf development in rice.

分类号： Q94

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