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Journal of Plant Sciences

Year: 2010 | Volume: 5 | Issue: 4 | Page No.: 376-390
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Authors

Baby Joseph

D. Jini

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Review Article

Salinity Induced Programmed Cell Death in Plants: Challenges and Opportunities for Salt-tolerant Plants

Baby Joseph and D. Jini
Salt stress is one of the major abiotic stresses faced by plants, which adversely affect their productivity, affects large terrestrial areas of the world; the need to produce salt-tolerant crops is evident. Programmed Cell Death (PCD) plays an important role in mediating plant adaptive responses to the adverse environment such as salinity. Salinity that causes PCD in plant cells and is a substantial constraint to crop production. Two main approaches are being used to improve salt tolerance: (1) the exploitation of natural genetic variations, either through direct selection in stressful environments or through mapping quantitative trait loci and subsequent marker-assisted selection and (2) the generation of transgenic plants to introduce novel genes or to alter expression levels of the existing genes to affect the degree of salt stress tolerance. Cells subjected to salt stress showed a protective response which enabled them to survive. In the last few years, considerable progress has been made in the analysis of the transcriptome to study salt stress either alone or in combination with other abiotic stresses. However, there is no review that highlights the studies conducted to-date on salinity induced PCD in plants: Challenges and opportunities for salt tolerant plants. We believe that the present summary and perspective on salinity induced PCD in plants will provide a backbone to enable further studies on PCD occurs by salt stress and help to develop salt-tolerant plants through biotechnological strategies.
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