MoTup1 is required for growth, conidiogenesis and pathogenicity of Magnaporthe oryzae. (27th February 2015)

• Record Type: Journal Article
• Authors: Chen, Yue; Zhai, Su; Sun, Yi; Li, Mengying; Dong, Yanhan; Wang, Xiaoli; Zhang, Haifeng; Zheng, Xiaobo; Wang, Ping; Zhang, Zhengguang
• Is Part Of: Molecular plant pathology. Volume 16:Number 8(2015:Oct.)
• Page Start: 799
• Page End: 810
• Publication Date: 2015-02-27
• Subjects: Plant diseases -- Molecular aspects -- Periodicals; Plant-pathogen relationships -- Molecular aspects -- Periodicals; 571.936
• DOI: 10.1111/mpp.12235
• Languages: English
• ISSNs: 1464-6722

Abstract

<abstract abstract-type="main"> <title>Summary</title> <p>The general transcriptional repressor Tup1 proteins play important regulatory roles in the growth and development of fungi. In this report, we characterized MoTup1, a protein homologous to Tup1 of <italic>Saccharomyces cerevisiae</italic>, from <italic>M. oryzae</italic>. Disruption of <italic>MoTUP1</italic> resulted in severe mycelial growth reduction and a defect in conidiogenesis. We found that MoTup1 is required for the maintenance of cell wall integrity by regulating the expression of the genes involved in cell wall biosynthesis. Pathogenicity assays indicated that the Δ<italic>Motup1</italic> mutants lost the ability to invade both rice and barley hosts. Moreover, observation of rice epidermis penetration showed that the hyphal tips of the mutants could still form appressorium‐like structures, but were unable to invade host cells. Taken together, our results demonstrate that <italic>M. oryzae</italic> MoTup1 is an important regulatory factor in fungal growth, development and pathogenesis on hosts.</p> </abstract>