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George, Suja
- Sustaining and Enhancing Crop Productivity in an Era of Climate Change
Abstract Views :226 |
PDF Views:87
Authors
Ajay Parida
1,
Suja George
1
Affiliations
1 M.S. Swaminathan Research Foundation, Taramani, Chennai 600 113, IN
1 M.S. Swaminathan Research Foundation, Taramani, Chennai 600 113, IN
Source
Current Science, Vol 109, No 3 (2015), Pagination: 462-473Abstract
The earth is experiencing a faster change in climate in the 21st century than it had in the past. Abiotic stresses such as drought and salinity, exacerbated by the fast changing climatic conditions pose a major hurdle in sustaining crop productivity. Developing crop plants able to yield better under abiotic stresses offer hope in this situation. Understanding abiotic stress-tolerance mechanisms in a plant system is crucial to improve the stress tolerance. The present review discusses broad molecular mechanisms of plant abiotic stress tolerance and outlines the latest biotechnological advances aiding plant abiotic stress research, with particular reference to the work carried out at the M.S. Swaminathan Research Foundation. The advantages of using extremophilesas model organisms (as conceptualized by M. S. Swaminathan) for identification of novel genetic combinations and understanding stress tolerance are discussed here.Keywords
Abiotic Stress, Crop Productivity, Extremophiles, Omics, Transgenic.Full Text
- Responses of Selected C3 and C4 Halophytes to Elevated CO2 Concentration under Salinity
Abstract Views :271 |
PDF Views:87
Authors
Saranya Jothiramshekar
1,
Jenifer Joseph Benjamin
1,
Rani Krishnasamy
1,
Anand Kumar Pal
1,
Suja George
1,
Rajalakshmi Swaminathan
1,
Ajay K. Parida
1
Affiliations
1 Department of Plant Molecular Biology, M.S. Swaminathan Research Foundation, III Cross Street, Taramani Institutional Area, Taramani, Chennai 600 113, IN
1 Department of Plant Molecular Biology, M.S. Swaminathan Research Foundation, III Cross Street, Taramani Institutional Area, Taramani, Chennai 600 113, IN
Source
Current Science, Vol 115, No 1 (2018), Pagination: 129-135Abstract
Halophytes have superior capacity to withstand soil salinity and are appropriate resources to study the mechanism of salt tolerance which can be harnessed to develop crops to withstand salinity. In this communication, we report the effect of salinity (200 mM NaCl) and elevated carbon dioxide (CO2) treatments in tandem, on select halophytes that have different photosynthetic pathways: C3 and C4. The plants were raised in ambient (380 ppm) and enriched (500 ppm) concentrations of CO2 using a mini-FACE facility. Total chlorophyll content, total soluble sugar concentration, lipid peroxidation level and electrolyte leakage were measured from fresh leaf samples collected at different time points. The results show a positive effect for elevated CO2 concentration on salt tolerance in both C3 and C4 plants, and indicate that halophytes may benefit from rising atmospheric CO2 concentration. The results also suggest that C4 halophytes may benefit from the rising atmospheric CO2 concentration than C3 halophytes.Keywords
Elevated Carbon Dioxide, Halophytes, Salinity, Photosynthetic Pathway, Sesuvium portulacastrum, Suaeda nudiflora.Full Text
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