钙在糖调控玉米抗茎基腐病防御反应中的作用  

The Role of Ca2+ in Sugar Regulation of Defensive Reaction in Corn Against Pythium Inflatum

作　　者：高增贵[1] 余朝阁[1] 陈捷[2] 庄敬华[1] 

机构地区：[1]沈阳农业大学植保学院,沈阳110161 [2]上海交通大学农业与生物学院,上海201101

出　　处：《玉米科学》2007年第4期89-92,共4页Journal of Maize Sciences

基　　金：国家"十一五"科技支撑计划项目(2006BAD08A06)

摘　　要：在玉米与茎腐病菌-肿囊腐霉菌互作中,外源补充钙离子显著提高了感病玉米品种茎部可溶性糖含量和防御酶系活性;减钙处理则显著降低抗病品种茎部可溶性糖含量和防御酶系的活性。同时,可溶性糖含量与玉米防御酶系活性也存在着极显著的相关性。钙离子和可溶性糖在玉米与病菌互作中,协同调节寄主的防御反应。The content of sugar and activities of defensive enzymes in susceptible cuhivars could be increased in the interaction of host - pathogen when host was treated with Ca^2＋, the same result was also sup from resistant cuhivars, in which contents of sugar and activities of defensive enzymes were ported by removing Ca^2＋parallel decline as decrease of Ca^2＋ content in the host plants. Furthermore, there was very significant correlation between soluble sugar content and defensive enzyme activity in different cuhivars. Ca^2＋ and soluble sugar operated collectively the defensive reaction in corn against Pythium inflatum.

关 键 词：钙离子 可溶性糖 玉米 茎基腐病 防御酶系 

分 类 号：S435.131[农业科学—农业昆虫与害虫防治]