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Ca2+-responsive phospholipid-binding BONZAI genes confer a novel role for cotton resistance to Verticillium wilt

文献类型： 外文期刊

作者： Hao, Xiaoyan 1 ; Gao, Shengqi 1 ; Luo, Tiantian 1 ; Zhao, Zhun 1 ; Shao, Wukui 1 ; Li, Jianping 1 ; Hu, Wenran 1 ; Huang, Quansheng 1 ;

作者机构： 1.Xinjiang Acad Agr Sci, Inst Nucl & Biol Technol, Urumqi 830091, Peoples R China

2.Xinjiang Key Lab Crop Biotechnol, Natl Key Lab Crop Genet Improvement & Germplasm In, Urumqi 830091, Peoples R China

关键词： Cotton; Verticillium dahliae; Resistance gene; Virus induced gene silencing; Ca2+-responsive phospholipid-binding BONZAI genes

期刊名称：PLANT MOLECULAR BIOLOGY （ 2022影响因子：5.1； 五年影响因子：5.3 ）

ISSN： 0167-4412

年卷期： 2023 年 112 卷 4-5 期

页码：

收录情况： SCI

摘要： Key messagePlant Ca2+-responsive phospholipid-binding BONZAI genes negatively regulate cotton disease resistance to V. dahliae. Verticillium wilt which produced by the soil-borne fungus Verticillium dahliae is an important biotic threat that limits cotton (Gossypium hirsutum) growth and agricultural productivity. It is very essential to explore new genes for the generation of V. dahliae resistance or tolerance cotton varieties. Ca2+ signaling as a secondary messenger is involved in pathogen stress response. Despite Ca2+-responsive phospholipid-binding BONZAI (BON) genes have intensively been investigated in Arabidopsis, their function has not still been characterized in cotton. Here, we showed that three copies of GhBON1, two copies of GhBON2 and GhBON3 were found from the genome sequences of upland cotton. The expression of GhBON1 was inducible to V. dahliae. Knocking down of GhBON1, GhBON2 and GhBON3 using virus induced gene silencing (VIGS) each increased up-regulation of defense responses in cotton. These GhBON1, GhBON2 and GhBON3-silenced plants enhanced resistance to V. dahliae accompanied by higher burst of hydrogen peroxide and decreased cell death and had more effect on the up-regulation of defense response genes. Further analysis revealed that GhBON1 could interacts with BAK1-interacting receptor-like kinase 1 (GhBIR1) and pathogen-associated molecular pattern (PAMP) receptor regulator BAK1 (GhBAK1) at plasma membrane. Our study further reveals that plant Ca2+ -responsive phospholipid-binding BONZAI genes negatively regulate Verticillium wilt with the conserved function in response to disease resistance or plant immunity.

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