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Molecular mechanisms of salinity tolerance in rice

Citation

Chen, T and Shabala, S and Niu, Y and Chen, Z-H and Shabala, L and Meinke, H and Venkataraman, G and Pareek, A and Xu, J and Zhou, M, Molecular mechanisms of salinity tolerance in rice, Crop Journal, 9, (3) pp. 506-520. ISSN 2095-5421 (2021) [Refereed Article]


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DOI: doi:10.1016/j.cj.2021.03.005

Abstract

Salinity is one of the major abiotic stresses which impose constraints to plant growth and production. Rice (Oryza sativa L.) is one of the most important staple food crops and a model monocot plant. Its production is expanding into regions that are affected by soil salinity, requiring cultivars more tolerant to saline conditions. Understanding the molecular mechanisms of such tolerance could lay a foundation for varietal improvement of salt tolerance in rice. In spite of extensive studies exploring the mechanism of salt tolerance, there has been limited progress in breeding for increased salinity tolerance. In this review, we summarize the information about the major molecular mechanisms underlying salinity tolerance in rice and further discuss the limitations in breeding for salinity tolerance. We show that numerous gene families and interaction networks are involved in the regulation of rice responses to salinity, prompting a need for a comprehensive functional analysis. We also show that most studies are based on whole-plant level analyses with only a few reports focused on tissue- and/or cell-specific gene expression. More details of salt-responsive channel and transporter activities at tissue- and cell-specific level still need to be documented before these traits can be incorporated into elite rice germplasm. Thus, future studies should focus on diversity of available genetic resources and, particular, wild rice relatives, to re-incorporate salinity tolerance traits lost during domestication.

Item Details

Item Type:Refereed Article
Keywords:Oryza sativa L., reactive oxygen species (ROS), stomatal regulation, membrane transporters, osmotic adjustment, gene network, Crosstalk, rice, salinity, review
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Agrochemicals and biocides (incl. application)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Grains and seeds
Objective Field:Barley
UTAS Author:Chen, T (Mr Tianxiao Chen)
UTAS Author:Shabala, S (Professor Sergey Shabala)
UTAS Author:Niu, Y (Mrs Yanan Niu)
UTAS Author:Shabala, L (Associate Professor Lana Shabala)
UTAS Author:Meinke, H (Professor Holger Meinke)
UTAS Author:Zhou, M (Professor Meixue Zhou)
ID Code:145376
Year Published:2021
Web of Science® Times Cited:1
Deposited By:TIA - Research Institute
Deposited On:2021-07-19
Last Modified:2021-07-20
Downloads:0

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