Bio-organic Chemical Studies on Production Mechanism of Resistance Regulating Substances in Plants

植物保卫素被定义为植物细胞中与真菌接触形成或激活的化合物，这些化合物具有抗真菌作用，从而防止疾病的全面发展。激发子被认为是导致植物保卫素在高等植物中积累的诱导剂。虽然已知各种外源激发子，但很少有关于准确分离内源激发子的报道，据推测，内源激发子存在于植物中。我们可以指出，过氧化氢是植物抗毒素产生的一种普遍和直接的触发物质，可以激活或增加可能的内源激发子。在马铃薯、甘薯、四季豆和甜菜中发现了过氧化氢的这些特征。接下来，我们尝试分离一种内源激发子，这种激发子在马铃薯组织中与过氧化氢接触时会增加。在目前阶段，我们可以提炼出一种具有激发子活性的化合物，其状态几乎是纯的。

Phytoalexins have been defined as compounds formed or activated in a living plant cell in contact with fungi, which are antifungal and thereby prevent the full development of the incipient disease.Elicitors are considered to be agents which cause the accumulation of phytoalexins in higher plants. While various exogenous elicitors have been known, there are few reports of exact isolation of an endogenous elicitor, which has been deduced to exist in plants. We could indicate that hydrogen peroxide is a general and direct trigger substance for phytoalexin production and would activate or increase the presumable endogenous elicitor. These characteristics of hydrogen peroxide were found with potato, sweet potato, kidney bean, and sugar beet. Next, we have attempted isolation of an endogenous elicitor, which increases in potato tissues in contact with hydrogen peroxide. At the present stage, we could refine a compound having the elicitor activity in an almost pure state.