促生内生真菌对环草石斛幼苗生理代谢的影响  

Effects of Growth-Promoting Endophytic Fungi on Physiological Metabolism of Dendrobium loddigesii Rolfe

作　　者：陈玲[1,2] 杨立昌[1] 乙引[1] 林俊清[1] 张习敏[1] 

机构地区：[1]贵州师范大学生命科学学院,贵阳550001 [2]贵州省畜牧兽医学校,贵阳550018

出　　处：《西南大学学报（自然科学版）》2010年第12期86-90,共5页Journal of Southwest University(Natural Science Edition)

基　　金：贵州省中药现代化科技产业研究开发专项资助项目(黔科合社字[2009]5043);国家科技支撑计划项目(2009BAI74B02-3);贵州省科技计划项目(黔科合重大专项字[2008]6022号);贵州省科技创新人才团队建设项目(黔科合人才团队[2009]4007号)

摘　　要：研究了促生内生真菌S12、S50对环草石斛幼苗生物量、光合作用特征、酶活力、蛋白质和脯氨酸含量的影响.结果表明:菌株S12和S50对环草石斛的光合速率、蛋白质含量和生物量有显著提高,并在短时间内迅速提高环草石斛的叶绿素含量、Chla/Chlb值、脯氨酸含量以及SOD、POD和PAL活力,但随着时间的延长,其作用效果逐渐减弱并回到对照水平.The effects of two growth-promoting endophytic fungus strains,S12 and S50,on some physiological parameters of the traditional medicinal plant Dendrobium loddigesii Rolfe were studied.The result showed that S12 and S50 remarkably increased photosynthesis rate,protein content and biomass of D.loddigesii and sharply enhanced its chlorophyll content,Chla/Chlb value,proline accumulation and SOD,POD and PAL activities.However,with the prolongation of the treatment,such effects gradually weakened and the above parameters were restored to their control levels.

关 键 词：环草石斛 内生真菌 生物量 光合作用 酶活力 

分 类 号：Q946[生物学—植物学]