A Non-Marker Mutagenesis Strategy to Generate Poly-hrp Gene Mutants in the Rice Pathogen Xanthomonas oryzae pv. oryzicola  

作　　者：ZOU Li-fang LI Yu-rong CHEN Gong-you 

机构地区：[1]School of Agriculture and Biology,Shanghai Jiao Tong University,Shanghai 200240,P.R.China [2]Key Laboratory of Monitoring and Management for Plant Diseases and Insects,Ministry of Agriculture/Department of Plant Pathology,Nanjing Agricultural University,Nanjing 210095,P.R.China

出　　处：《Agricultural Sciences in China》2011年第8期1139-1150,共12页中国农业科学（英文版）

基　　金：supported by the National Natural Science Foundation of China (30710103902,31071656);the Ph D Programs Foundation of Ministry of Education of China (20100073110045)

摘　　要：Xanthomonas oryzae pv.oryzicola （Xoc）,the critical pathogen causing bacterial leaf streak in rice,possesses a hrp cluster that is responsible for triggering hypersensitive response （HR） in non-host tobacco and pathogenicity in host rice,and is considered to be one of the model pathogens in the rice model plant.Here,we developed a high-throughput mutagenesis system using a two-step integration mediated by a novel suicide vector pKMS1.It was used to generate single or poly-gene mutants of hpa1,hpa2,hrcV,hrpE,hpaB,and hrpF gene for functional analysis.In total,five single,four double,and two triple hrp gene mutants were constructed.The double and triple hrp gene deletion mutants triggered novel phenotypes in planta.Our data suggest that pKMS1 is a useful tool for non-marker mutagenesis of multiple genes in Xoc.Xanthomonas oryzae pv.oryzicola （Xoc）,the critical pathogen causing bacterial leaf streak in rice,possesses a hrp cluster that is responsible for triggering hypersensitive response （HR） in non-host tobacco and pathogenicity in host rice,and is considered to be one of the model pathogens in the rice model plant.Here,we developed a high-throughput mutagenesis system using a two-step integration mediated by a novel suicide vector pKMS1.It was used to generate single or poly-gene mutants of hpa1,hpa2,hrcV,hrpE,hpaB,and hrpF gene for functional analysis.In total,five single,four double,and two triple hrp gene mutants were constructed.The double and triple hrp gene deletion mutants triggered novel phenotypes in planta.Our data suggest that pKMS1 is a useful tool for non-marker mutagenesis of multiple genes in Xoc.

关 键 词：Xanthomonas oryzae pv. oryzicola suicide vector knockout mutagenesis hrp gene 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治] TQ460.38[农业科学—植物保护]