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Transgenic approaches for abiotic stress tolerance in plants retrospect and prospects

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Relation http://oar.icrisat.org/3622/
http://dx.doi.org/ 10.1007/s00299-007-0474-9
 
Title Transgenic approaches for abiotic stress tolerance in plants retrospect and prospects
 
Creator Sharma, K K
Bhatnagar-Mathur, P
Vadez, V
 
Subject Genetics and Genomics
 
Description Abiotic stresses including drought are serious
threats to the sustainability of crop yields accounting for
more crop productivity losses than any other factor in
rainfed agriculture. Success in breeding for better adapted
varieties to abiotic stresses depend upon the concerted
efforts by various research domains including plant and
cell physiology, molecular biology, genetics, and breeding.
Use of modern molecular biology tools for elucidating the
control mechanisms of abiotic stress tolerance, and for
engineering stress tolerant crops is based on the expression
of specific stress-related genes. Hence, genetic engineering
for developing stress tolerant plants, based on the introgression
of genes that are known to be involved in stress
response and putative tolerance, might prove to be a faster
track towards improving crop varieties. Far beyond the
initial attempts to insert ‘‘single-action’’ genes, engineering
of the regulatory machinery involving transcription factors
has emerged as a new tool now for controlling the
expression of many stress-responsive genes. Nevertheless,
the task of generating transgenic cultivars is not only
limited to the success in the transformation process, but
also proper incorporation of the stress tolerance. Evaluation of the transgenic plants under stress conditions, and understanding the physiological effect of the inserted genes at the whole plant level remain as major challenges to overcome. This review focuses on the recent progress in using transgenic technology for the improvement of abiotic stress tolerance in plants. This includes discussion on the evaluation of abiotic stress response and the protocols for testing the transgenic plants for their tolerance under closeto-field conditions.
 
Publisher Springer Verlag
 
Date 2008
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/3622/1/Transgenic_approaches_for_abiotic_stress_tolerance_in_plants_retrospect_and_prospects.pdf
Sharma, K K and Bhatnagar-Mathur, P and Vadez, V (2008) Transgenic approaches for abiotic stress tolerance in plants retrospect and prospects. Plant Cell Reports, 27 (3). pp. 411-424. ISSN 0721-7714 (Print), 1432-203X (Online)