Comparative Genomics and Gene Pool Analysis Reveal the Decrease of Genome Diversity and Gene Number in Rice Blast Fungi by Stable Adaption with Rice
文献类型: 外文期刊
作者: Wu, Qi 1 ; Wang, Yi 1 ; Liu, Li-Na 1 ; Shi, Kai 5 ; Li, Cheng-Yun 1 ;
作者机构: 1.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming 650201, Yunnan, Peoples R China
2.Yunnan Agr Univ, Coll Sci, Kunming 650201, Yunnan, Peoples R China
3.Yunnan Agr Univ, Key Lab Crop Prod & Smart Agr Yunnan Prov, Key Lab Intelligent Organ Tea Garden Construct Un, Yunnan Organ Tea Ind Intelligent Engn Res Ctr, Kunming 650201, Yunnan, Peoples R China
4.Yunnan Acad Agr Sci, Agr Environm & Resources Inst, Key Lab Green Prevent & Control Agr Transboundary, Kunming 650201, Yunnan, Peoples R China
5.Yunnan Agr Univ, Sch Foreign Language, Kunming 650201, Yunnan, Peoples R China
关键词: Magnaporthe oryzae; comparative genomics; gene pool; selective sweep; host adaption
期刊名称:JOURNAL OF FUNGI ( 影响因子:5.724; 五年影响因子:6.413 )
ISSN:
年卷期: 2022 年 8 卷 1 期
页码:
收录情况: SCI
摘要: Magnaporthe oryzae caused huge losses in rice and wheat production worldwide. Comparing to long-term co-evolution history with rice, wheat-infecting isolates were new-emerging. To reveal the genetic differences between rice and wheat blast on global genomic scale, 109 whole-genome sequences of M. oryzae from rice, wheat, and other hosts were reanalyzed in this study. We found that the rice lineage had gone through stronger selective sweep and fewer conserved genes than those of Triticum and Lolium lineages, which indicated that rice blast fungi adapted to rice by gene loss and rapid evolution of specific loci. Furthermore, 228 genes associated with host adaptation of M. oryzae were found by presence/absence variation (PAV) analyses. The functional annotation of these genes found that the fine turning of genes gain/loss involved with transport and transcription factor, thiol metabolism, and nucleotide metabolism respectively are major mechanisms for rice adaption. This result implies that genetic base of specific host plant may lead to gene gain/loss variation of pathogens, so as to enhance their adaptability to host. Further characterization of these specific loci and their roles in adaption and evaluation of the fungi may eventually lead to understanding of interaction mechanism and develop new strategies of the disease management.
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