Structure and biological activity of maculansin A, a phytotoxin from the phytopathogenic fungus Leptosphaeria maculans
作者:M. Soledade C. Pedras、Yang Yu
DOI:10.1016/j.phytochem.2008.09.015
日期:2008.12
During a search for elicitors and phytotoxins produced by virulent isolates of the phytopathogenic fungus Leptosphaeria maculans (Desm.) Ces. et de Not. [asexual stage Phoma lingam (Tode ex Fr.) Desm.], the selective phytotoxin maculansin A was isolated and its structure determined by analysis of spectroscopic data and chemical degradation. Maculansin A, a unique derivative of mannitol containing the
在寻找由植物病原真菌 Leptosphaeria maculans (Desm.) Ces 的毒力分离株产生的诱导物和植物毒素期间。等不。[无性阶段Phoma lingam (Tode ex Fr.) Desm.],分离了选择性植物毒素maculansin A,并通过光谱数据和化学降解分析确定了其结构。Maculansin A 是一种独特的甘露醇衍生物,含有不寻常的发色团 2-isocyano-3-methyl-2-butenoyl,是从对油菜(Brassica napus L. cv. Westar)有毒的 L. maculans 的马铃薯葡萄糖培养物中分离出来的。令人惊讶的是,maculansin A 对抗性植物(B. juncea L. cv. Cutlass, brown mustard)的毒性比对易感植物(canola)的毒性更大。然而,Maculansin A 不会在抗性或易感