SreC 依赖于对宿主铁环境的适应,它调控着 Curvularia lunata 营养级的过渡和发育过程。

IF 4.8 1区 农林科学 Q1 PLANT SCIENCES
Jiaying Sun, Jiamei Zhao, Miaomiao Liu, Jiayang Li, Jie Cheng, Wenling Li, Mingyue Yuan, Shuqin Xiao, Chunsheng Xue
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引用次数: 0

摘要

植物病原体在感染过程中会受到来自宿主的铁饥饿或过剩的挑战,但植物病原体迅速适应宿主动态铁环境以吸收铁进行入侵和定殖的机制在很大程度上仍未得到探索。在这里,我们发现 Curvularia lunata 的 GATA 转录因子 SreC 是毒力和适应宿主铁过量环境所必需的。SreC以铁依赖的方式直接与ATGWGATAW元件结合,调控不同铁同化途径之间的转换,使新月藻在不同营养阶段适应宿主的铁环境。SreC 还能调控新月蝇营养级的转换和发育过程。SreC 依赖于对宿主铁环境的适应,这对新月蝇的感染性生长和存活至关重要。我们还证明,CgSreA(SreC 的直向同源物)在禾谷壳线虫中也扮演着类似的角色。我们的结论是,Sre 在感染过程中介导对宿主铁环境的适应,而且这种功能在半生真菌中是保守的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

SreC-dependent adaption to host iron environments regulates the transition of trophic stages and developmental processes of Curvularia lunata.

SreC-dependent adaption to host iron environments regulates the transition of trophic stages and developmental processes of Curvularia lunata.

Plant pathogens are challenged by host-derived iron starvation or excess during infection, but the mechanism of plant pathogens rapidly adapting to the dynamic host iron environments to assimilate iron for invasion and colonization remains largely unexplored. Here, we found that the GATA transcription factor SreC in Curvularia lunata is required for virulence and adaption to the host iron excess environment. SreC directly binds to the ATGWGATAW element in an iron-dependent manner to regulate the switch between different iron assimilation pathways, conferring adaption to host iron environments in different trophic stages of C. lunata. SreC also regulates the transition of trophic stages and developmental processes in C. lunata. SreC-dependent adaption to host iron environments is essential to the infectious growth and survival of C. lunata. We also demonstrate that CgSreA (a SreC orthologue) plays a similar role in Colletotrichum graminicola. We conclude that Sre mediates adaption to the host iron environment during infection, and the function is conserved in hemibiotrophic fungi.

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来源期刊
Molecular plant pathology
Molecular plant pathology 生物-植物科学
CiteScore
9.40
自引率
4.10%
发文量
120
审稿时长
6-12 weeks
期刊介绍: Molecular Plant Pathology is now an open access journal. Authors pay an article processing charge to publish in the journal and all articles will be freely available to anyone. BSPP members will be granted a 20% discount on article charges. The Editorial focus and policy of the journal has not be changed and the editorial team will continue to apply the same rigorous standards of peer review and acceptance criteria.
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