Abiotic stress is increasingly common in agricultural areas due to climate change. The main leaf disease of raspberry plants (Rubus ideaus) in Brazil is late leaf rust (Thekopsora americana). The association between abiotic and biotic stress can lead to different plant responses relative to that observed with only one type of stress. To determine the interference of abiotic stress caused by water limitation on the intensity of late leaf rust in raspberries, the epidemiological disease parameters, gas exchange and plant growth of inoculated and noninoculated plants under controlled water management were evaluated. Plants under water deficit showed reduced growth in the aerial part, a lower intensity of late leaf rust and a reduction of related gas exchange parameters. Plants without water stress showed a reduced photosynthetic rate related to increased disease severity. Synergism was not observed between biotic and abiotic stresses for late leaf rust in raspberries.

由于气候变化，非生物胁迫在农业地区越来越普遍。巴西覆盆子植物（Rubus ideaus）的主要叶片病害是晚叶锈病（Thekopsora americana ））。非生物胁迫和生物胁迫之间的关联可导致相对于仅用一种胁迫观察到的不同植物反应。为了确定水分限制引起的非生物胁迫对覆盆子晚期叶锈病强度的干扰，评估了受控水分管理下接种和未接种植物的流行病学疾病参数、气体交换和植物生长。水分亏缺的植物表现出地上部分的生长减少，晚期叶锈病的强度降低以及相关的气体交换参数降低。没有水分胁迫的植物显示出与疾病严重程度增加相关的光合速率降低。在覆盆子的晚期叶锈病中，没有观察到生物和非生物胁迫之间的协同作用。