硫堇蛋白及细胞防御素在植物抗病性育种中的研究-生物技术通报.pdfVIP

生物技术通报 BIO TE CHN OLOG Y B ULLETIN 20 10 3 宗晓娟 王甲威 刘庆忠 ( , 271000) : 硫堇蛋白及细胞防御素是一类广泛存在于植物细胞中并 细菌真菌等病原微生物具有抑制或杀灭作用的小 分子量多肽抗生素二者在分子量空间结构及某些化学性质具有相似性, 近年来在植物抗病性育种中得以应用 植物硫 堇蛋白及细胞防御素的分类结构作用机制以及在植物抗性育种的应用实例进行综述 : 硫堇蛋白 细胞防御素 植物抗病性 R esearches on Thionins and Defensin s in P lant D isease R esistance Breeding Zong X iaojuan W ang Jiawei Liu Q ingzhong (Shandong Institute of Pom ology, Taian 271000) Abstract: Plants Th ion ins an Defensins are sm allm olecular weight pepti es antibioticswh ich are involve in plant efense re sponses such inh ibiting the grow th of pathogens. Overexpressing the th ionins or efensins genes in p lants confers mi provem ent in pro tection against pathogen attack. To ate, several types of plants th ion ins or efensins have been applie in p lant isease resistance bree ing. This review briefly escribe the classification, structure an potential applications of those wt o types of plant antib iotics. K ey w ords: Th ionins Defensins P lant isease res istan t TefensinsTh ionins, , , , 45- 54, , ROS( reactive oxy Thion ins, th ionins gen speciese) , ) PR , [ 1] ( pathogenesisrelate protein) , , , , ( Th i [ 3] , Th ionins on ins) ( Defensins) Defensins Th ionins ( 5 kD) , ( 1 Th ion insD efensin s ) 1. 1 T