The bZIP Transcription Factor UvbZIP14 Regulates Vegetative Growth, Conidiation and Abiotic Stress Tolerance in Ustilaginoidea virens

IF 1.1 4区农林科学 Q3 PLANT SCIENCES Journal of Phytopathology Pub Date : 2024-09-02 DOI:10.1111/jph.13383

Han Zhang, Jinsong Qu, Lianmeng Liu, Weixiao Yin, Chaoxi Luo

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Abstract

bZIP transcription factors play a crucial role in regulating various physiological processes in phytopathogens. Ustilaginoidea virens is known to possess 28 bZIP transcription factors; however, their biological functions remain unexplored. In this study, the function of UvbZIP14 in U. virens was investigated. The expression levels of UvbZIP14 were found to be up-regulated after rice inoculation with U. virens. The knockout mutants and complemented strains of UvbZIP14 were generated and characterised. The knockout mutants display increased growth and decreased conidiation. Compared with the wild-type strain, the knockout mutants exhibit reduced sensitivity to NaCl and sorbitol but increased sensitivity to CFW. There was no significant difference in the number of false smut balls in rice between the knockout and wild-type strains. These results findings highlight the significant role of UvbZIP14 in regulating vegetative growth, conidiation and tolerance to abiotic stress in U. virens.

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bZIP 转录因子 UvbZIP14 调控紫茎藻的无性生长、分生孢子和非生物胁迫耐受性

bZIP 转录因子在调节植物病原体的各种生理过程中发挥着至关重要的作用。据了解，Ustilaginoidea virens 含有 28 个 bZIP 转录因子，但它们的生物学功能仍有待探索。本研究调查了 UvbZIP14 在 U. virens 中的功能。研究发现，水稻接种病毒后，UvbZIP14 的表达水平上调。产生了 UvbZIP14 的基因敲除突变体和互补株，并对其进行了表征。基因敲除突变体的生长速度加快，分生孢子量减少。与野生型菌株相比，基因敲除突变体对 NaCl 和山梨醇的敏感性降低，但对 CFW 的敏感性提高。基因敲除株与野生型株在水稻假烟粉虱球数上没有明显差异。这些结果凸显了 UvbZIP14 在调控紫云英的无性生长、分生孢子和对非生物胁迫的耐受性方面的重要作用。

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来源期刊

Journal of Phytopathology 生物-植物科学

CiteScore

2.90

自引率

0.00%

发文量

审稿时长

4-8 weeks

期刊介绍： Journal of Phytopathology publishes original and review articles on all scientific aspects of applied phytopathology in agricultural and horticultural crops. Preference is given to contributions improving our understanding of the biotic and abiotic determinants of plant diseases, including epidemics and damage potential, as a basis for innovative disease management, modelling and forecasting. This includes practical aspects and the development of methods for disease diagnosis as well as infection bioassays. Studies at the population, organism, physiological, biochemical and molecular genetic level are welcome. The journal scope comprises the pathology and epidemiology of plant diseases caused by microbial pathogens, viruses and nematodes. Accepted papers should advance our conceptual knowledge of plant diseases, rather than presenting descriptive or screening data unrelated to phytopathological mechanisms or functions. Results from unrepeated experimental conditions or data with no or inappropriate statistical processing will not be considered. Authors are encouraged to look at past issues to ensure adherence to the standards of the journal.