• Grapevine trunk diseases have devastating consequences on vineyards worldwide. European wild grapevines (Vitis vinifera subs. sylvestris) from the last viable population in Germany along the Rhine river showed variable degrees of resistance against Neofusicoccum parvum (strain Bt‐67), a fungus associated with Botryosphaeriaceae‐related dieback.
• Representative genotypes from different subclades of this population were mapped with respect to their ability to induce wood necrosis, as well as their defence responses in a controlled inoculation system.
• The difference in colonization patterns could be confirmed by cryo‐scanning electron microscopy, while there was no relationship between vessel diameter and infection success. Resistant lines accumulated more stilbenes, that were in addition significantly partitioned to nonglycosylated viniferin trimers. By contrast, the susceptible genotypes accumulated less stilbenes with a significantly higher proportion of glycosylated piceid.
• We suggest a model in which in the resistant genotypes phenylpropanoid metabolism is channelled rapidly and specifically to the bioactive stilbenes. Our study specifies a resistant chemotype against grapevines trunk diseases and paves a way to breed for resistance against grapevine Botryosphaeriaceae‐related dieback.

中文翻译：

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对Botryosphaeriaceae相关的Dieback有抗性的栽培葡萄的祖先化学型将新陈代谢分配给生物活性的斯蒂尔苯。

• 葡萄树干疾病对全世界的葡萄园造成毁灭性的后果。欧洲野生葡萄（葡萄潜艇。 樟子松从德国沿着莱茵河最后存活种群）显示不同程度的抵抗性的Neofusicoccum孢子虫（菌株的Bt-67），与Botryosphaeriaceae相关枯死相关的真菌。
• 绘制了该种群不同亚群的代表性基因型，涉及它们诱导木材坏死的能力以及在受控接种系统中的防御反应。
• 冷冻扫描电子显微镜可以证实定植模式的差异，而血管直径与感染成功率之间没有关系。抗性品系积累了更多的对苯二酚，此外它们还显着地分配给了非糖基化的viniferin三聚体。相比之下，易感基因型积累的丁苯醚较少，而糖基化的Piceid比例较高。
• 我们建议建立一个模型，其中在抗性基因型中，苯丙烷类代谢会快速且特异地传导至生物活性的斯蒂苯类。我们的研究指定了对葡萄干病具有抗药性的化学型，并为抗葡萄灰霉菌相关的枯死铺平了道路。