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Salinity Stress: Physiological constraints and adaptive mechanisms


Shabala, S and Munns, R, Salinity Stress: Physiological constraints and adaptive mechanisms, Plant Stress Physiology, CABI, S Shabala (ed), Oxford, UK, pp. 59-93. ISBN 978-1-84593-995-3 (2012) [Research Book Chapter]

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Copyright 2012 CAB International

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A significant part of the world's land area is salt-affected. Most crops are not able to handle large amounts of salt without a negative impact on their growth and metabolism, so understanding the physiological mechanisms by which plants deal with salinity is essential to minimize detrimental effects and reduce the multibillion dollar penalties imposed by salt stress on crop production. This chapter summarizes our current knowledge of physiological mechanisms conferring plant adaptive responses to salinity. Major physiological constraints are then summarized, and physiological and genetic diversity of plant responses to salinity are discussed. Key physiological and anatomical mechanisms conferring salinity tolerance in plants are then analysed in detail, and practical ways of ameliorating salinity stress are considered. Altogether, this chapter shows that plants have evolved numerous mechanisms to prevent accumulation of toxic Na+ levels in cell cytosol. This ability is complemented by mechanisms of coping with oxidative stress imposed by salinity. A more complete physiological and genetic understanding of these processes will enable breeders to produce new salt-tolerant plants for the future.

Item Details

Item Type:Research Book Chapter
Keywords:salt, salinity, crops, production, tolerance, toxicity, stress, physiological constraints, adaptive responses
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other plant production and plant primary products
Objective Field:Other plant production and plant primary products not elsewhere classified
UTAS Author:Shabala, S (Professor Sergey Shabala)
ID Code:78671
Year Published:2012
Deposited By:Agricultural Science
Deposited On:2012-07-17
Last Modified:2017-10-16
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