Hormonal and epigenetic regulation of root responses to salinity stress

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外文摘要：Salinity stress is a major environmental stress affecting crop productivity,and its negative impact on glo-bal food security is only going to increase,due to current climate trends. Salinity tolerance was present in wild crop relatives but significantly weakened during domestication. Regaining it back requires a good understanding of molecular mechanisms and traits involved in control of plant ionic and ROS homeosta-sis. This review summarizes our current knowledge on the role of major plant hormones (auxin,cytoki-nins,abscisic acid,salicylic acid,and jasmonate) in plants adaptation to soil salinity. We firstly discuss the role of hormones in controlling root tropisms,root growth and architecture (primary root elongation,meristematic activity,lateral root development,and root hairs formation). Hormone-mediated control of uptake and sequestration of key inorganic ions (sodium,potassium,and calcium) is then discussed fol-lowed by regulation of cell redox balance and ROS signaling in salt-stressed roots. Finally,the role of epi-genetic alterations such as DNA methylation and histone modifications in control of plant ion and ROS homeostasis and signaling is discussed. This data may help develop novel strategies for breeding and cul-tivating salt-tolerant crops and improving agricultural productivity in saline regions.

外文关键词：

PhytohormoneRoot developmentSodiumPotassiumROS signal

作者：

Ping Yun、Cengiz Kaya、Sergey Shabala

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作者单位：

School of Biological Sciences,University of Western Australia,Crawley,WA 6009,Australia

Department of Soil Science and Plant Nutrition,Harran University,TR-63200 Sanliurfa,Turkey

International Research Centre for Environmental Membrane Biology,Foshan University,Foshan 528000,Guangdong,China

出版年：

2024

DOI：

10.1016/j.cj.2024.02.007

作物学报(英文版)

CSTPCD

ISSN：

年,卷(期)：2024.12(5)