Jasmonic acid and salicylic acid modulate systemic reactive oxygen species signaling during stress responses

茉莉酸 水杨酸 活性氧 拟南芥 脱落酸 拟南芥 系统获得性抵抗 细胞生物学 生物 非生物胁迫 信号转导 氧化应激 生物化学 基因 突变体
作者
Ronald J. Myers,Yosef Fichman,Sara I. Zandalinas,Ron Mittler
出处
期刊:Plant Physiology [Oxford University Press]
卷期号:191 (2): 862-873 被引量:32
标识
DOI:10.1093/plphys/kiac449
摘要

Abstract Plants can send long-distance cell-to-cell signals from a single tissue subjected to stress to the entire plant. This ability is termed “systemic signaling” and is essential for plant acclimation to stress and/or defense against pathogens. Several signaling mechanisms are associated with systemic signaling, including the reactive oxygen species (ROS) wave, calcium wave, hydraulic wave, and electric signals. The ROS wave coordinates multiple physiological, molecular, and metabolic responses among different parts of the plant and is essential for systemic acquired acclimation (SAA) to stress. In addition, it is linked with several plant hormones, including jasmonic acid (JA), salicylic acid (SA), and abscisic acid (ABA). However, how these plant hormones modulate the ROS wave and whether they are required for SAA is not clear. Here we report that SA and JA play antagonistic roles in modulating the ROS wave in Arabidopsis (Arabidopsis thaliana). While SA augments the ROS wave, JA suppresses it during responses to local wounding or high light (HL) stress treatments. We further show that ethylene and ABA are essential for regulation of the ROS wave during systemic responses to local wounding treatment. Interestingly, we found that the redox-response protein NONEXPRESSOR OF PATHOGENESIS RELATED PROTEIN 1 is required for systemic ROS accumulation in response to wounding or HL stress, as well as for SAA to HL stress. Taken together, our findings suggest that interplay between JA and SA might regulate systemic signaling and SAA during responses of plants to abiotic stress or wounding.
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