Plant Salinity Sensors: Current Understanding and Future Directions

Salt stress is a major limiting factor for plant growth and crop yield. High salinity causes osmotic stress followed by ionic stress, both of which disturb plant growth and metabolism. Understanding how plants perceive salt stress will help efforts to improve salt tolerance and ameliorate the effect...

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Published inFrontiers in plant science Vol. 13; p. 859224
Main Authors Wang, Cheng-Feng, Han, Guo-Liang, Yang, Zong-Ran, Li, Yu-Xia, Wang, Bao-Shan
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 07.04.2022
Subjects
Plant Science
root
salt stress
salt tolerance
salt-stress sensor or receptor
signal transduction
salt tolerance
salt-stress sensor or receptor
salt stress
signal transduction
root
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Summary:Salt stress is a major limiting factor for plant growth and crop yield. High salinity causes osmotic stress followed by ionic stress, both of which disturb plant growth and metabolism. Understanding how plants perceive salt stress will help efforts to improve salt tolerance and ameliorate the effect of salt stress on crop growth. Various sensors and receptors in plants recognize osmotic and ionic stresses and initiate signal transduction and adaptation responses. In the past decade, much progress has been made in identifying the sensors involved in salt stress. Here, we review current knowledge of osmotic sensors and Na + sensors and their signal transduction pathways, focusing on plant roots under salt stress. Based on bioinformatic analyses, we also discuss possible structures and mechanisms of the candidate sensors. With the rapid decline of arable land, studies on salt-stress sensors and receptors in plants are critical for the future of sustainable agriculture in saline soils. These studies also broadly inform our overall understanding of stress signaling in plants.
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Reviewed by: Ayman El Sabagh, Siirt University, Turkey; Satish Chander Bhatla, University of Delhi, India; Frans Maathuis, University of York, United Kingdom
These authors have contributed equally to this work
Edited by: Camilla Hill, Murdoch University, Australia
This article was submitted to Plant Abiotic Stress, a section of the journal Frontiers in Plant Science
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2022.859224