Resistance factors to grey mould in grape berries: identification of some phenolics inhibitors of Botrytis cinerea stilbene oxidase
作者:Gilles Goetz、Abdellatif Fkyerat、Nadine Métais、Manuela Kunz、Raffaele Tabacchi、Roger Pezet、Vincent Pont
DOI:10.1016/s0031-9422(99)00351-9
日期:1999.11
lytic enzymes such as polyphenoloxidases or laccases. One lytic enzyme, stilbene oxidase, can detoxify grape stilbenic phytoalexins, destroying the grapes’ defence mechanisms and allowing the fungus to grow. Some constitutive grape berry phenolic compounds, however, strongly inhibit stilbene oxidase activity. Constitutive berry phenolic compounds were isolated from Gamay and Gamaret varieties and their
摘要 由灰葡萄孢菌引起的灰霉病是葡萄最重要的病害之一。在开花和变质之间,葡萄浆果对 B. cinerea 具有抗性,尽管它们可以携带病原体而没有任何明显的疾病发展迹象。转色后,灰霉病菌可在易感葡萄品种(例如 Gamay)中产生疾病,但在抗性品种(例如 Gamaret)中保持静止。静止阶段的病原体抗性尚未完全了解,但被认为涉及多个参数,包括化学和机械因素。B. cinerea 的发病机制主要与溶解酶如多酚氧化酶或漆酶的排泄有关。一种裂解酶,芪氧化酶,可以解毒葡萄芪类植物抗毒素,破坏葡萄的防御机制并允许真菌生长。然而,一些组成性葡萄浆果酚类化合物强烈抑制芪氧化酶活性。从Gamay和Gamaret品种中分离出组成性浆果酚类化合物,并对其生物活性、浓度和化学结构进行了比较分析。儿茶素、表儿茶素-3-O-没食子酸酯、反式-caftaric、反式和顺式香豆酸和反式香豆酸、taxofoline-3-O-rhamnoside