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Creeping Stem 1 regulates directional auxin transport for lodging resistance in soybean

文献类型： 外文期刊

作者： Xu, Zhiyong 1 ; Zhang, Liya 2 ; Kong, Keke 1 ; Kong, Jiejie 1 ; Ji, Ronghuan 2 ; Liu, Yi 3 ; Liu, Jun 2 ; Li, Hongyu 2 ; Ren, Yulong 2 ; Zhou, Wenbin 2 ; Zhao, Tao 2 ; Zhao, Tuanjie 1 ; Liu, Bin 2 ;

作者机构： 1.Nanjing Agr Univ, Coll Agr, State Key Lab Crop Genet & Germplasm Enhancement &, Minist Agr,Zhongshan Biol Breeding Lab ZSBBL,Natl, Nanjing, Peoples R China

2.Chinese Acad Agr Sci, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, Natl Key Facil Crop Gene Resources & Genet Improve, Beijing, Peoples R China

3.Beijing Dabeinong Technol Grp CoLtd, Beijing, Peoples R China

关键词： soybean; lodging resistance; gravitropism; amyloplast sedimentation; polar auxin transport

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：10.5； 五年影响因子：12.4 ）

ISSN： 1467-7644

年卷期： 2025 年 23 卷 2 期

页码：

收录情况： SCI

摘要： Soybean, a staple crop on a global scale, frequently encounters challenges due to lodging under high planting densities, which results in significant yield losses. Despite extensive research, the fundamental genetic mechanisms governing lodging resistance in soybeans remain elusive. In this study, we identify and characterize the Creeping Stem 1 (CS1) gene, which plays a crucial role in conferring lodging resistance in soybeans. The CS1 gene encodes a HEAT-repeat protein that modulates hypocotyl gravitropism by regulating amyloplast sedimentation. Functional analysis reveals that the loss of CS1 activity disrupts polar auxin transport, vascular bundle development and the biosynthesis of cellulose and lignin, ultimately leading to premature lodging and aberrant root development. Conversely, increasing CS1 expression significantly enhances lodging resistance and improves yield under conditions of high planting density. Our findings shed light on the genetic mechanisms that underlie lodging resistance in soybeans and highlight the potential of CS1 as a valuable target for genetic engineering to improve crop lodging resistance and yield.

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