Cooperative herbivory between two important pests of rice

文献类型: 外文期刊

第一作者: Liu, Qingsong

作者: Liu, Qingsong;Hu, Xiaoyun;Su, Shuangli;Ning, Yuese;Peng, Yufa;Li, Yunhe;Liu, Qingsong;Ye, Gongyin;Lou, Yonggen;Turlings, Ted C. J.

作者机构:

期刊名称:NATURE COMMUNICATIONS ( 影响因子:17.694; 五年影响因子:17.763 )

ISSN:

年卷期: 2021 年 12 卷 1 期

页码:

收录情况: SCI

摘要: Normally, when different species of herbivorous arthropods feed on the same plant this leads to fitness-reducing competition. We found this to be different for two of Asia's most destructive rice pests, the brown planthopper and the rice striped stem borer. Both insects directly and indirectly benefit from jointly attacking the same host plant. Double infestation improved host plant quality, particularly for the stemborer because the planthopper fully suppresses caterpillar-induced production of proteinase inhibitors. It also reduced the risk of egg parasitism, due to diminished parasitoid attraction. Females of both pests have adapted their oviposition behaviour accordingly. Their strong preference for plants infested by the other species even overrides their avoidance of plants already attacked by conspecifics. This cooperation between herbivores is telling of adaptations resulting from the evolution of plant-insect interactions, and points out mechanistic vulnerabilities that can be targeted to control these major pests. Herbivore cooperation between insect pests can result in substantially greater damage to crops but also constitutes a good target for improved pest control. Liu et al. reveal how the brown plant-hopper and the rice striped stem-borer obtain mutual benefits when feeding on the same rice plant.

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