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The bZIP transcription factor FpAda1 is essential for fungal growth and conidiation in Fusarium pseudograminearum. 2020

Linlin Chen, and Yuming Ma, and Jingya Zhao, and Xuejing Geng, and Wenbo Chen, and Shengli Ding, and Haiyang Li, and Honglian Li
College of Plant Protection, Henan Agricultural University, Zhengzhou, 450000, China.

Fusarium pseudograminearum is an important pathogen of Fusarium crown rot and Fusarium head blight, which is able to infect wheat and barley worldwide, causing great economic losses. Transcription factors (TFs) of the basic leucine zipper (bZIP) protein family control important processes in all eukaryotes. In this study, we identified a gene, designated FpAda1, encoding a bZIP TF in F. pseudograminearum. The homolog of FpAda1 is also known to affect hyphal growth in Neurospora crassa. Deletion of FpAda1 in F. pseudograminearum resulted in defects in hyphal growth, mycelial branching and conidia formation. Pathogenicity assays showed that virulence of the Δfpada1 mutant was dramatically decreased on wheat coleoptiles and barley leaves. However, wheat coleoptile inoculation assay showed that Δfpada1 could penetrate and proliferate in wheat cells. Moreover, the FpAda1 was required for abnormal nuclear morphology in conidia and transcription of FpCdc2 and FpCdc42. Taken together, these results indicate that FpAda1 is an important transcription factor involved in growth and development in F. pseudograminearum.

UI MeSH Term Description Entries
D010935 Plant Diseases Diseases of plants. Disease, Plant,Diseases, Plant,Plant Disease
D005656 Fungal Proteins Proteins found in any species of fungus. Fungal Gene Products,Fungal Gene Proteins,Fungal Peptides,Gene Products, Fungal,Yeast Proteins,Gene Proteins, Fungal,Peptides, Fungal,Proteins, Fungal
D005670 Fusarium A mitosporic Hypocreales fungal genus, various species of which are important parasitic pathogens of plants and a variety of vertebrates. Teleomorphs include GIBBERELLA. Fusariums
D001467 Hordeum A plant genus of the family POACEAE. The EDIBLE GRAIN, barley, is widely used as food. Barley,Hordeum vulgare
D013172 Spores, Fungal Reproductive bodies produced by fungi. Conidia,Fungal Spores,Conidium,Fungal Spore,Spore, Fungal
D014908 Triticum A plant genus of the family POACEAE that is the source of EDIBLE GRAIN. A hybrid with rye (SECALE CEREALE) is called TRITICALE. The seed is ground into FLOUR and used to make BREAD, and is the source of WHEAT GERM AGGLUTININS. Wheat,Durum Wheat,Triticum aestivum,Triticum durum,Triticum spelta,Triticum turgidum,Triticum turgidum subsp. durum,Triticum vulgare,Durum Wheats,Wheat, Durum
D050976 Basic-Leucine Zipper Transcription Factors A large superfamily of transcription factors that contain a region rich in BASIC AMINO ACID residues followed by a LEUCINE ZIPPER domain. Basic-Leucine Zipper Transcription Factor,GBF bZIP Transcription Factor,bZIP G-Box Binding Factor,bZIP G-Box Binding Factors,bZIP Protein,bZIP Transcription Factor,GBF bZIP Transcription Factors,bZIP Proteins,bZIP Transcription Factors,Basic Leucine Zipper Transcription Factor,Basic Leucine Zipper Transcription Factors,Factor, bZIP Transcription,Protein, bZIP,Transcription Factor, bZIP,Transcription Factors, bZIP,bZIP G Box Binding Factor,bZIP G Box Binding Factors
D018515 Plant Leaves Expanded structures, usually green, of vascular plants, characteristically consisting of a bladelike expansion attached to a stem, and functioning as the principal organ of photosynthesis and transpiration. (American Heritage Dictionary, 2d ed) Plant Leaf,Leaf, Plant,Leave, Plant,Leaves, Plant,Plant Leave

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