色氨酸对醉马草内生真菌共生体麦角生物碱含量的影响  

Effects of tryptophan on ergot alkaloids concentrations of Achnatherum inebrians-Neotyphodium gansuense association

作　　者：胡春霞[1] 李秀璋[1] 方爱国[1] 李春杰[1] 

机构地区：[1]草地农业生态系统国家重点实验室兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业科学》2014年第5期844-849,共6页Pratacultural Science

基　　金：国家"973"项目(2014CB138702;2007CB108902);国家自然科学基金项目(31372366;30771531);教育部新世纪优秀人才项目(NCET-08-0256);兰州大学中央高校基本科研业务费项目(lzujbky-2012-K01)

摘　　要：本研究以被甘肃内生真菌(Neotyphodium gansuense)侵染的醉马草(Achnatherum inebrians)为材料,在温室条件下,研究了不同浓度(0、250、500、750mg·L-1)色氨酸对醉马草幼苗麦角酰胺和麦角新碱两类麦角生物碱含量的影响。结果表明,不同浓度的色氨酸均能显著降低醉马草幼苗的鲜质量、株高、分蘖数(P<0.05),显著增加植株中麦角酰胺和麦角新碱含量(P<0.05)。Pot experiments in greenhouse were carried out to study the effects of tryptophan on ergot alkaloids concentrations of Achnatherurn inebrians associated with Neotyphodiurn gansuense. The results showed that fresh weight,height and tiller number of A. inebrians seedings significantly decreased （P〈0.05） with the addition of tryptophan. Ergine and ergonovine concentrations significantly increased （P〈0.05） with 500 mg · L^-1 and 750 mg · L^-1 tryptophan treatments compared with control. With 250 mg · L^-1 tryptophan treatment, ergine concentration was highest compared with other treatments which showed that this treatment had great benefits to ergine accumulation. The treatment with 500 mg · L tryptophan had more benefit to ergonovine accumulation compared with other treatments.

关 键 词：色氨酸 麦角新碱 麦角酰胺 醉马草 

分 类 号：S452[农业科学—植物保护]