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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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A Novel Mycoreovirus from Sclerotinia sclerotiorum Reveals Cross-family Horizontal Gene Transfer and Evolution of Diverse Viral Lineages

A Novel Mycoreovirus from Sclerotinia sclerotiorum Reveals C...

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中国植物病理学会2016年学术年会

作者： LIU Li-jiang GAO Li-xia CHENG Jia-sen FU Yan-ping LIU Hui-quan JIANG Dao-hong XIE Jia-tao State Key Laboratory of Agricultural Microbiology The Provincial Key Lab of Plant Pathology of Hubei ProvinceCollege of Plant Science and TechnologyHuazhong Agricultural University Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of Agriculture of People's Republic of ChinaOil Crops Research InstituteChinese Academy of Agricultural Sciences nwafu-pu joint research center State Key Laboratory of Crop Stress Biology for Arid AreasCollege of Plant ProtectionNorthwest A&F University

As the largest dsRNA virus family,the evolutionary relationship of reoviruses remains still unclear for the lack of enough representative members and evolutionary ***,we performed the molecular cloning and complete genome of a novel mycoreovirus Sclerotinia sclerotiorum Reovirus 1(SsReV1) which had a genome of 28 055 base pairs(bp) and 11 dsRNA *** combination with unique molecular features,virions shape and composition,and phylogenetic analysis,SsReV1 was distinct from all known reoviruses and may represent a new taxonomic unit in the Reoviridae *** importantly,two conserved domains,double-stranded RNA binding motif(dsRBM,pfam 00035) and reovirus sigma C capsid protein(ReoC,pfam04582),were identified in the genome of SsReV1,that were widespread in diverse virus lineages in the further *** comparison and phylogenetic analysis revealed that multiple cross-family horizontal gene transfer(HGT) events may occur among reoviruses,dsDNA viruses,single-stranded RNA viruses and even cellular ***,the dsRBM of SsReV1 shared a closest phylogenetic relationship with those of two human proteins(Q7Z6F6/P19525,E7EVJ4) with a strong *** results indicate that SsReV1 is a new taxonomic representative in the Reoviridae family and reoviruses may have a large-scale gene-communications with other virus lineages more common than previously recognized,providing new insights into the diversity,global ecology and evolution of reoviruses and segmented dsRNA viruses.

关键词： Sclerotinia sclerotiorum Mycoreovirus Horizontal gene transfer

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