fireblight
/ˈfaɪəblaɪt/noun
mass noun
1- a serious bacterial disease of plants of the rose family, especially fruit trees, giving the leaves a scorched appearance梨火疫（蔷薇科植物的一种严重细菌性疾病, 常致使枝叶呈枯焦状）。
1.1
- The bacterium is the Gram-negative Erwinia amylovora.该病菌是革兰氏阴性的梨火疫病欧文氏菌。