作者:Harold W. Gardner、Anne E. Desjardins、Susan P. McCormick、David Weisleder
DOI:10.1016/s0031-9422(00)89517-5
日期:1994.11
Abstract The potato phytoalexin lubimin displayed a complex pattern of metabolism by strains of the potato pathogen Gibberella pulicaris (anamorph: Fusarium sambucinum). The metabolites 15-dihydrolubimin and isolubimin were common to both lubimin-sensitive and lubimin-tolerant strains. In one lubimin-tolerant strain, several unique metabolites, including the tricyclic compounds cyclodehydroisolubimin
摘要 马铃薯植物抗毒素 lubimin 显示出马铃薯病原体 Gibberella pulicaris(无型:Fusarium sambucinum)菌株的复杂代谢模式。代谢物 15-dihydrolubimin 和 isolubimin 对 lubimin 敏感和 lubimin 耐受菌株都是常见的。在一种耐受 lubimin 的菌株中,几种独特的代谢物,包括三环化合物环脱氢异溶血红素和环红血红素(2-二氢环脱氢异溶血红素)及其环氧化物,以 15-二氢红血红素和异溶血红素为代价积累。这些三环化合物对鲁比明敏感菌株无毒。这些结果表明,在某些 G. pulicaris 菌株中,lubimin 解毒的可能途径涉及通过不饱和中间体将异溶比明环化为环脱氢异溶比明。