Goggin Fiona L, Fischer Hillary D
Department of Entomology and Plant Pathology, University of Arkansas System Division of Agriculture, Fayetteville, AR, United States.
Front Plant Sci. 2022 Feb 16;12:811105. doi: 10.3389/fpls.2021.811105. eCollection 2021.
Reactive oxygen species (ROS) such as hydrogen peroxide and superoxide are produced in plants in response to many biotic and abiotic stressors, and they can enhance stress adaptation in certain circumstances or mediate symptom development in others. The roles of ROS in plant-pathogen interactions have been extensively studied, but far less is known about their involvement in plant-insect interactions. A growing body of evidence, however, indicates that ROS accumulate in response to aphids, an economically damaging group of phloem-feeding insects. This review will cover the current state of knowledge about when, where, and how ROS accumulate in response to aphids, which salivary effectors modify ROS levels in plants, and how microbial associates influence ROS induction by aphids. We will also explore the potential adaptive significance of intra- and extracellular oxidative responses to aphid infestation in compatible and incompatible interactions and highlight knowledge gaps that deserve further exploration.
活性氧（ROS），如过氧化氢和超氧化物，在植物中因应对多种生物和非生物胁迫因子而产生，它们在某些情况下可增强胁迫适应性，而在其他情况下则介导症状发展。ROS在植物与病原体相互作用中的作用已得到广泛研究，但对于它们在植物与昆虫相互作用中的参与情况却知之甚少。然而，越来越多的证据表明，ROS会因蚜虫（一类对经济造成损害的韧皮部取食昆虫）而积累。本综述将涵盖目前关于ROS在何时、何处以及如何因蚜虫而积累的知识现状，哪些唾液效应子会改变植物中的ROS水平，以及微生物共生体如何影响蚜虫诱导的ROS产生。我们还将探讨在亲和与非亲和相互作用中，细胞内和细胞外氧化反应对蚜虫侵染的潜在适应性意义，并突出值得进一步探索的知识空白。
