Cotton CC-NBS-LRR Gene GbCNL130 Confers Resistance to Verticillium Wilt Across Different Species.

Cotton CC-NBS-LRR Gene GbCNL130 Confers Resistance to Verticillium Wilt Across Different Species.
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棉花 CC-NBS-LRR 基因 GbCNL130 赋予不同物种对黄萎病的抗性

DOI:
10.3389/fpls.2021.695691
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发表时间:
2021
影响因子:
5.6
通讯作者:
Dhar N
Dhar N
中科院分区:
生物学2区
文献类型:
--
作者:
Li T;Zhang Q;Jiang X;Li R;Dhar N

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黄萎病(VW)是由大丽黄萎病菌引起的棉花毁灭性病害,对产量和品质造成重大影响。在缺乏安全有效的化学控制的情况下,大众汽车很难管理。因此,培育抗病品种是目前防治棉花黄萎病最经济有效的方法。 CC-NBS-LRR (CNL) 基因家族是一类重要的参与抗病性的植物基因。本研究在海岛棉基因组中鉴定出 141 个 GbCNL,其中 37.5%(53 个基因)的 GbCNL 富集在 12 个基因簇(GC01-GC12)中,基于染色体中的基因分布。特别是,来自两个最大簇(GC11 和 GC12)的 7 个 GbCNL 在抗性品种(Hai No. 7124)和感病品种(Giza No. 57)中显着上调。病毒诱导的 G. barbadense 中的 GbCNL130 基因沉默(基因簇 12 (GC12) 中的一个典型基因)显着改变了对 VW 的反应,损害了植物对 V. dahliae 的抗性。相比之下,GbCNL130 过表达显着增加了野生型拟南芥对 VW 的抗性。根据我们在此提出的研究结果,我们得出结论,GbCNL130 通过激活水杨酸 (SA) 依赖性防御反应途径,导致活性氧的强烈积累和发病相关 (PR) 基因的上调,从而促进对 VW 的抵抗。总之,我们的研究结果在棉花中发现了一种新的 CNL 抗性基因 GbCNL130,该基因赋予不同宿主对 VW 的抗性。
Verticillium wilt (VW) is a destructive disease in cotton caused by Verticillium dahliae and has a significant impact on yield and quality. In the absence of safe and effective chemical control, VW is difficult to manage. Thus, at present, developing resistant varieties is the most economical and effective method of controlling Verticillium wilt of cotton. The CC-NBS-LRR (CNL) gene family is an important class of plant genes involved in disease resistance. This study identified 141 GbCNLs in Gossypium barbadense genome, with 37.5% (53 genes) GbCNLs enriched in 12 gene clusters (GC01–GC12) based on gene distribution in the chromosomes. Especially, seven GbCNLs from two largest clusters (GC11 and GC12) were significantly upregulated in the resistant cultivar (Hai No. 7124) and the susceptible (Giza No. 57). Virus-induced gene silencing of GbCNL130 in G. barbadense, one typical gene in the gene cluster 12 (GC12), significantly altered the response to VW, compromising plant resistance to V. dahliae. In contrast, GbCNL130 overexpression significantly increased the resistance to VW in the wild-type Arabidopsis thaliana. Based on our research findings presented here, we conclude that GbCNL130 promotes resistance to VW by activating the salicylic acid (SA)-dependent defense response pathway resulting in strong accumulation of reactive oxygen species and upregulation of pathogenesis-related (PR) genes. In conclusion, our study resulted in the discovery of a new CNL resistance gene in cotton, GbCNL130, that confers resistance to VW across different hosts.
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