拌种灵、叶枯唑和萎锈灵对病菌的毒力机制比较

苯氨基甲酰类杀菌剂是最早开发的一类内吸性杀菌剂 1 ] ,能有效地防治一些真菌病害 ,持效性长 ,抗药性风险低 2 ] 。对叶枯唑产生抗药性的水稻白叶枯病菌 ( Xanthomonas oryzae pv.oryzae)对拌种灵同样具有抗药性 3] 。近年来 ,拌种灵被有效地用于防治果园中柑桔溃疡病 ( X.citri) 4]。目前对噻唑类杀菌剂防治细菌病害的作用机制尚不清楚 ,初步认为这类药剂最初的作用靶点可能与致病性相关因子有关 3] 。我们对 3种具有相似结构的杀菌剂拌种灵、叶枯唑和萎锈灵在离体条件下对病原菌的毒力机制进行了初步研究 ,同时也对拌种灵防治柑桔…

Analogy of Seedvax,Saikuzuo and Carboxin in Virulence Mechanism

Virulence of seedvax (amicarthiazol), saikuzuo (bismerthiazol) and carboxin to Xanthomonas citri、X. oryzae pv. oryzae、X.campestris pv. glycines and Rhizoctonia cerealis were determined , and the relation of their activity wit h their composition were analysised , Furthermore, their effects on growth, resp iration and fungiactive mode to X. citri were taken into investigation . The results indicated that virulence mechanism of seedvax is interrelated to that o f saikuzuo and carboxin , seedvax possibly attack any targets of the respiration pathway and other unknown bio-chemical sites, seedvax is characterized with po ly-active location when transported in bio-metabolic ways.