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Deploying Mechanisms Adapted by Halophytes to Improve Salinity Tolerance in Crop Plants: Focus on Anatomical Features, Stomatal Attributes, and Water Use Efficiency

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Abstract

Nearly 1200 million hectares of land is affected by salinity throughout the world, and it is increasing year after year. It is one of the major causes that threaten our crop productivity at a time when we need to meet our growing food demands with limited land and freshwater resources. This leaves us but to understand the complex salinity tolerance mechanisms adapted by halophytic species especially their stomatal conductance (gs), epidermal salt bladders, and water use efficiency (WUE) and to utilize the candidate genes associated with them in crop plants for better tolerance and crop productivity.

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Abbreviations

ABA:

Abscisic acid

CAM:

Crassulacean acid metabolism

CCC:

Cation-chloride cotransporter

CNGC:

Cyclic nucleotide-gated channels

EBC:

Epidermal bladder cells

GIS:

GLABROUS INFLORESCENCE STEMS

g s :

Stomatal conductance

HKT:

High-affinity potassium transporter

KEA:

Potassium-efflux antiporter

KIRC:

Potassium inward-rectifying channel

KORC:

Potassium outward-rectifying channel

KUP:

Potassium uptake

NADPH:

Nicotinamide adenine dinucleotide phosphate (reduced)

NSCC:

Nonselective cation channels

PIP:

Plasma membrane intrinsic protein

ROS:

Reactive oxygen species

SIM:

SIAMESE

SLA:

Specific leaf area

SOS:

Salt overly sensitive

TIP:

Tonoplast intrinsic protein

WUE:

Water use efficiency

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Acknowledgments

The research activities in the laboratory of Dr. AS supported by DST-PURSE, DST-FIST, and UGC-CAS, New Delhi, are gratefully acknowledged. PBK gratefully acknowledges the CSIR, New Delhi, for providing the Emeritus Scientist Fellowship.

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Srinivas, A. et al. (2018). Deploying Mechanisms Adapted by Halophytes to Improve Salinity Tolerance in Crop Plants: Focus on Anatomical Features, Stomatal Attributes, and Water Use Efficiency. In: Kumar, V., Wani, S., Suprasanna, P., Tran, LS. (eds) Salinity Responses and Tolerance in Plants, Volume 1. Springer, Cham. https://doi.org/10.1007/978-3-319-75671-4_2

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