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Mutations in FgPrp6 suppressive to the Fgprp4 mutant in Fusarium graminearum

Journal of Integrative Agriculture 2022年第5期21卷 1375-1388页

作者： LI Chao-hui FAN Zhi-li HUANG Xin-yi WANG Qin-hu JIANG Cong XU Jin-rong JIN Qiao-jun NWAFU-PU Joint Research Center/State Key Laboratory of Crop Stress Biology for Arid Areas College of Plant ProtectionNorthwest A&F UniversityYang ling 712100P.R.China Institute of plant Protection/Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base of Ministry of Science and Technology Jiangsu Academy of Agricultural SciencesNanjing 210014P.R.China Department of Botany and plant Pathology Purdue UniversityWest LafayetteIN47907USA

The pre-mRNA processing factor Prp6 is an essential component of the U4/U6.U5 tri-small nuclear ribonucleoprotein(snRNP).In a previous study,mutations were identified in the PRP6 ortholog in four suppressors of Fgprp4 that was deleted of the only kinase FgPrp4 among the spliceosome components in the plant pathogenic fungus Fusarium *** this study,we identified additional suppressor mutations in FgPrp6 and determined the suppressive effects of selected *** total,12 mutations of FgPRP6 were identified in 20 suppressors of Fgprp4 by sequencing *** three mutation sites are in the linker region of FgPrp6,seven are in the first two HAT ***-seq analysis showed that suppressor mutations on different sites caused different splicing efficiency *** suppressive effects of E308K and R230H were *** to human and fission yeast,the FgPrp6 was phosphorylated by the FgPrp4 ***,the conserved Prp4-phosphorylation sites T261,T219&T221,and predicted phosphorylation sites T199&T200 on FgPrp6 were dispensable for the function of FgPrp6 in hyphal growth and sexual reproduction but important in plant *** are required for the infectious growth of *** in wheat ***-seq analysis of the wheat lemma infected with Fgprp6/FgPRP6^(Δ199-221)-GFP or Fgprp6/FgPRP6^(Δ250-262)-GFP showed that 28 and 35% introns had splicing defects,respectively,which may be responsible for their defects in plant infection.

关键词： RNA splicing FgPrp6 suppressor plant infection phosphorylation

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Genome-wide identification of the Sec-dependent secretory protease genes in Erwinia amylovora and analysis of their expression during infection of immature pear fruit

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2020年第9期21卷 716-726页

作者： Wang-bin ZHANG Hai-lin YAN Zong-cai ZHU Chao ZHANG Pei-xiu DU Wen-jun ZHAO Wei-min LI College of plant Science Tarim UniversityAlar 843300China Southern Xinjiang Key Laboratory of Integrated Pest Management Tarim UniversityAlar 843300China Biotechnology Research Institute Chinese Academy of Agricultural SciencesBeijing 100081China Chinese Academy of Inspection and Quarantine Beijing 100176China

The general secretory(Sec)pathway represents a common mechanism by which bacteria secrete proteins,including virulence factors,into the extracytoplasmic ***,there is little information about this system,as well as its associated secretory proteins,in relation to the fire blight pathogen Erwinia *** this study,data mining revealed that *** harbors all of the essential components of the Sec *** on this information,we identified putative Sec-dependent secretory proteases in *** on a genome-wide *** the programs SignalP,LipoP,and Phobius,a total of 15 putative proteases were predicted to contain the N-terminal signal peptides(SPs)that might link them to the Sec-dependent *** activities of the predicted SPs were further ttvreaaalicsdyeta otgepelda nsuesmsi inicng cprarenoa psEeesrtdcy h.s eiTrgirncaihfniicsa carcniotplltiyi-obwnahasle enad *** kyaaslmiensye lo spvhohorowas epwdh atasht aaust sete h(deP theoo xipAnr)o ecgsueslinaotene f iuofms i1 om1 na tosufyr steth epe em1 a t5 rh s,ae txs tcuroagcngfyeitrsomtipnelagd s ttmhhieecii rr pperoox---xL?tential roles in plant *** results of this study support the suggestion that *** might employ the Sec system to secrete a suite of proteases to enable successful infection of plants,and shed new light on the interaction of *** with host plants.

关键词： Erwinia amylovora Sec-dependent pathway Protease Gene expression plant infection

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FgCDC14 regulates cytokinesis,morphogenesis,and pathogenesis in Fusarium graminearum

FgCDC14 regulates cytokinesis,morphogenesis,and pathogenesis...

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中国植物病理学会2015年学术年会

作者： LI Chao-hui ZHANG Shi-jie Michael Melesse HAO Chao-Feng WANG Chen-fang Mark C.Hall XU Jin-Rong State Key Laboratory of Crop Stress Biology for Arid Areas College of Plant ProtectionNorthwest Agricultural and Forestry University Dept.of Botany and plant Pathology Purdue University Dept.of Biochemistry Purdue University

Members of Cdc14 phosphatases are common in animals and fungi but absent in *** its orthologs are conserved in plant pathogenic fungi,their functions during infection are not *** this study,we showed that CDC14 is important for pathogenesis and morphogenesis in two fungal *** Fusarium graminearum,FgCDC14 is required for normal cell division and septum formation and FgCdc14 possesses phosphatase activity with specificity for a subset of yeast Cdk-type phosphorylation *** Fgcdc14 mutant was reduced in growth,conidiation,and ascospore *** was defective in ascosporogenesis and *** in Fgcdc14 was reduced and hyphal compartments contained multiple nuclei,indicating defects in the coordination between nuclear division and ***,foot cells of mutant conidia often differentiated into conidiogenous cells,resulting in the production of inter-connected *** the interphase,FgCdc14-GFP localized to the nucleus and *** ***,deletion of MoCDC14 resulted in similar defects in growth,conidiation,and *** Mocdc 14 mutant was defective in appressorium morphogenesis and *** together,our results indicate that Cdcl4 phosphatase functions in cell division and septum formation in *** and ***,likely by counteracting Cdk phosphorylation,and is required for plant infection.

关键词： Cell cycle Cytokinesis plant infection Conidiation Sexual reproduction Gibberella zeae

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FgSsn3 kinase,a component of the mediator complex,is important for sexual reproduction and pathogenesis in Fusarium graminearum

FgSsn3 kinase,a component of the mediator complex,is importa...

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中国植物病理学会2015年学术年会

作者： CAO Shu-lin ZHANG Shi-jie LIU Hui-quan HAO Chao-feng JIN Qiao-jun XU Jin-rong State Key Laboratory of Crop Stress Biology for Arid Areas College of Plant ProtectionNorthwest Agricultural and Forestry University Dept.of Botany and plant Pathology Purdue University

Fusarium graminearum,an important plant pathogen of wheat and barley,not only causes severe yield losses but also produces harmful mycotoxins contaminating infested *** this study,we characterized the FgSSN3 gene in *** which is orthologous of SSN3 in Saccharomyces cerevisiae,SRBIO in Saccharomyces pombe and Neurospora *** Fgssn3 deletion mutant is decreased in vegetative growth,abnormal colony appearance and significant reduced in virulence on wheat heads and maize *** and transmission electron microscopy（SEM and TEM） results indicate that the mutant Fgssn3 failed to spread from the inoculation site to other parts of wheat *** it is defective in conidium morphology,the Fgssn3 is normal in *** of FgSSN3 resulted in increased expression levels of HTF1 and *** addition,the Fgssn3 mutant is defective in sexual reproduction and essential for female fertility but dispensable for male ***3 physically interacted with FgSsn8 in yeast two-hybrid *** indicate that FgSsn3 as a subunit of mediator complex in *** regulates growth,development,sexual reproduction and plant infection and contributes to transcriptional repression or activation of diversely regulated genes.

关键词： Mediator complex plant infection Conidiation Sexual reproduction Gibberella zeae

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