bZIP Transcription Factor UvATF21 Mediates Vegetative Growth, Conidiation, Stress Tolerance and Is Required for Full Virulence of Rice False Smut Fungus <i>Ustilaginoidea virens</i>

Liu Yueran, Qu Jinsong, Wang Yufu, Yin Weixiao, Luo Chaoxi

doi:10.1016/j.rsci.2022.12.001

2023 , Vol. 30 >Issue 1: 50 - 57

DOI: https://doi.org/10.1016/j.rsci.2022.12.001

Research Paper

bZIP Transcription Factor UvATF21 Mediates Vegetative Growth, Conidiation, Stress Tolerance and Is Required for Full Virulence of Rice False Smut Fungus Ustilaginoidea virens

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Hubei Key Laboratory of Plant Pathology / College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China

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^#These authors contributed equally to this work
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Peer review under responsibility of China National Rice Research Institute

Yin Weixiao (wxyin@mail.hzau.edu.cn)

Received date: 2022-02-21

Accepted date: 2022-05-24

Online published: 2022-05-30

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Abstract

bZIP proteins are widely distributed in eukaryotic organisms and regulate a diverse range of physiological processes. Several bZIP proteins have previously been identified in Ustilaginoidea virens. However, the biological roles of these bZIP proteins in this pathogen are still unknown. Here, one of these bZIP protein coding genes, UvATF21, was functionally characterized. Targeted deletion of UvATF21resulted in reduced conidiation and pathogenicity despite of the increased vegetative growth. The deletion mutants also significantly decreased the sensitivity to osmotic and oxidative stresses. Interestingly, deletion of UvATF21 exhibited different performances to cell wall integrity stress. These results indicated that UvATF21played crucial roles in vegetative growth, conidiation, stress response, and full virulence in U. virens.

Key words： Ustilaginoidea virens; bZIP protein; conidiation; stress response; pathogenicity

Cite this article

Liu Yueran, Qu Jinsong, Wang Yufu, Yin Weixiao, Luo Chaoxi . bZIP Transcription Factor UvATF21 Mediates Vegetative Growth, Conidiation, Stress Tolerance and Is Required for Full Virulence of Rice False Smut Fungus Ustilaginoidea virens[J]. Rice Science, 2023 , 30(1) : 50 -57 . DOI: 10.1016/j.rsci.2022.12.001

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