Genomic and phenotypic biology of a novel Dickeya zeae WH1 isolated from rice in China: Insights into pathogenicity and virulence factors

The pathogenicity determinants and virulence factors of WH1 were mainly analyzed through genomic comparisons with complete genomes of other D. zeae strains with high virulence (EC1, EC2, MS1 and MS2). The results revealed that plant cell wall-degrading extracellular enzymes and proteases (PCWDEs), flagellar and chemotaxis, and quorum sensing were highly conserved in all analyzed genomes, which were confirmed through phenotypic assays. Additionally, WH1 harbored type I, II, III, and VI secretion systems (T1SS, T2SS, T3SS, and T6SS), but lost T4SS and T5SS. Like strains MS1 and MS2 isolated from banana, WH1 harbored both capsule polysaccharide (CPS) and exopolysaccharide (EPS). Unlike strain EC1, WH1 lost the zeamines biosynthesis cluster.

本研究通过与其他高毒力泽生狄克氏菌（D. zeae）完整基因组菌株（EC1、EC2、MS1及MS2）进行基因组比较分析，主要解析了WH1的致病决定因子与毒力因子。结果显示，植物细胞壁降解胞外酶与蛋白酶（PCWDEs）、鞭毛与趋化系统以及群体感应在所有分析基因组中均高度保守，该结论通过表型实验得到验证。此外，WH1携带I型、II型、III型及VI型分泌系统（T1SS、T2SS、T3SS和T6SS），但缺失IV型与V型分泌系统。与分离自香蕉的MS1、MS2菌株类似，WH1同时携带荚膜多糖（CPS）与胞外多糖（EPS）。与EC1菌株不同，WH1缺失芋菌素生物合成簇。

搜集汇总

背景与挑战

背景概述

该数据集包含关于从中国水稻中分离的新型Dickeya zeae WH1菌株的基因组和表型生物学数据，重点分析了其致病性决定因子和毒力因子。研究发现WH1菌株具有高度保守的植物细胞壁降解酶、鞭毛和趋化性等特征，并含有多种分泌系统，但与某些菌株相比缺失了特定基因簇。