文献类型： 外文期刊

作者： Zang, Yihao ¹ ; Hu, Yan ² ; Xu, Chenyu ¹ ; Wu, Shenjie ³ ; Wang, Yangkun ¹ ; Ning, Zhiyuan ¹ ; Han, Zegang ¹ ; Si, Zhanfe ¹ ;

作者机构： 1.Nanjing Agr Univ, Coll Agr, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing 210095, Peoples R China

2.Zhejiang Univ, Coll Agr & Biotechnol, Agron Dept, Hangzhou 310029, Peoples R China

3.Shanxi Acad Agr Sci, Biotechnol Res Ctr, Taiyuan 030031, Peoples R China

期刊名称：ISCIENCE （ 影响因子：5.458； 五年影响因子：5.458 ）

ISSN：

年卷期： 2021 年 24 卷 8 期

页码：

收录情况： SCI

摘要： Cotton fiber is an excellent model for studying plant cell elongation and cell wall biogenesis as well because they are highly polarized and use conserved polarized diffuse growth mechanism. Fiber strength is an important trait among cotton fiber qualities due to ongoing changes in spinning technology. However, the molecular mechanism of fiber strength forming is obscure. Through map-based cloning, we identified the fiber strength gene GhUBX. Increasing its expression, the fiber strength of the transgenic cotton was significantly enhanced compared to the receptor W0 and the helices number of the transgenic fiber was remarkably increased. Additionally, we proved that GhUBX regulates the fiber helical growth by degrading the GhSPL1 via the ubiquitin 26S-proteasome pathway. Taken together, we revealed the internal relationship between fiber helices and fiber stronger. It will be useful for improving the fiber quality in cotton breeding and illustrating the molecular mechanism for plant twisted growth.