Ectopic Expressions of theGhLETM1Gene Reveal Sensitive Dose Effects on Precise Stamen Development and Male Fertility in Cotton

文献类型： 外文期刊

第一作者： Zhang, Li

作者： Zhang, Li;Zhang, Yao;Fan, Yijie;Guo, Haixia;Guo, Huihui;Wu, Jianfei;Lian, Xin;Gou, Zhongyuan;Sun, Yuxiao;Zheng, Congcong;Chen, Cuixia;Zeng, Fanchang;Wang, Hongmei;Zhao, Yunlei

作者机构：

关键词： cotton biotechnology; male sterility; shortened filaments; indehiscent anthers; pollen abortion; gene expression regulation

期刊名称：GENES （ 影响因子：4.096； 五年影响因子：4.339 ）

ISSN：

年卷期： 2020 年 11 卷 7 期

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收录情况： SCI

摘要： The homologous leucine zipper/EF-hand-containing transmembranes (LETMs) are highly conserved across a broad range of eukaryotic organisms. The LETM functional characteristics involved in biological process have been identified primarily in animals, but little is known about the LETM biological function mode in plants. Based on the results of the current investigation, theGhLETM1gene crucially affects filament elongation and anther dehiscence of the stamen in cotton. Both excessive and lower expression of theGhLETM1gene lead to defective stamen development, resulting in shortened filaments and indehiscent anthers with pollen abortion. The results also showed that the phenotype of the shortened filaments was negatively correlated with anther defects in the seesaw model under the ectopic expression ofGhLETM1. Moreover, our results notably indicated that the gene requires accurate expression and exhibits a sensitive dose effect for its proper function. This report has important fundamental and practical significance in crop science, and has crucial prospects for genetic engineering of new cytoplasmic male sterility lines and breeding of crop hybrid varieties.

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