CAJ | 학술논문

本文研究了一个新分离纯化的链格孢菌毒素对恶性杂草紫茎泽兰叶片的致病作用与叶片光合作用抑制的相关性.结果表明:在毒素处理叶片的形态产生明显变化之前,光合放氧速率和表观量子效率均明显降低.进一步的研究表明其作用位点在类囊体膜上,主要抑制了2个光系统的电子传递活性,但对于色素含量、暗反应关键酶则没有显著的影响.
본문연구료일개신분리순화적련격포균독소대악성잡초자경택란협편적치병작용여협편광합작용억제적상관성.결과표명:재독소처리협편적형태산생명현변화지전,광합방양속솔화표관양자효솔균명현강저.진일보적연구표명기작용위점재류낭체막상,주요억제료2개광계통적전자전체활성,단대우색소함량、암반응관건매칙몰유현저적영향.
The relationship between the pathogenicity of a new toxin extract from Alternaria alternata (Fr.) Keissler infecting crofton weed (Eupatorium adenophorum Spreng) that is one of the most troublesome invasive weeds and its inhibition on photosynthesis was studied. The results showed that the toxin extract greatly inhibited oxygen evolution rate and appearance quanta efficiency declined evidently before any distinct change in leaf appearance was observed. The main action site of toxin in chloroplast was on thylakoid membrane. It inhibited electron transfer reaction of two photosystems. The toxin did not affect prominently photosynthetic pigment content and RuBP carboxylase level and activity.