Comprehensive genome sequence analysis of Ralstonia solanacearum gd-2, a phylotype I sequevar 15 strain collected from a tobacco bacterial phytopathogen
文献类型: 外文期刊
作者: Zhiliang Xiao;Guangcan Li;Aiguo Yang;Zhengwen Liu;Min Ren;Lirui Cheng;Dan Liu;Caihong Jiang;Liuying Wen;Shengxin Wu;Yazhi Cheng;Wen Yu;Ruimei Geng
作者机构:
关键词: comparative genomic analysis;Ralstonia solanacearum;type III effectors;virulence factors;whole-genome sequencing analysis
期刊名称: Frontiers in Microbiology
ISSN: 1664-302X
年卷期: 2024 年 15 卷
页码:
收录情况: SCIE(2024版)
摘要: Introduction: Plant bacterial wilt is an important worldwide disease caused by Ralstonia solanacearum which is a complex of species. Methods: In this study, we identified and sequenced the genome of R. solanacearum strain gd-2 isolated from tobacco. Results: Strain gd-2 was identified as R. solanacearum species complex (RSSC) phylotype I sequevar 15 and exhibited strong pathogenicity to tobacco. The genome size of gd-2 was 5.93 Mb, including the chromosomes (3.83 Mb) and the megaplasmid (2.10 Mb). Gene prediction results showed that 3,434 and 1,640 genes were identified in the chromosomes and plasmids, respectively. Comparative genomic analysis showed that gd-2 exhibited high conservation with ten highly similar strain genomes and the differences between gd-2 and other genomes were mainly located at positions GI12-GI14. 72 type III effectors (T3Es) were identified and RipAZ2 was a T3E specific to gd-2 compared with other eight sequenced strain. Discussion: Our study provides a new basis and evidence for studying the pathogenic mechanism of R. solanacearum.
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