Effect of drought stress on protein and proline metabolism in seven traditional rice (Oryza sativa Linn.) genotypes of Assam, India
Journal Title: Journal of Research in Biology - Year 2012, Vol 2, Issue 3
Abstract
Abiotic stresses can directly or indirectly affect the physiological status of an organism by altering its metabolism, growth, and development. Many plant species naturally accumulate proline and protein as major organic osmolytes when subjected to different abiotic stresses. These compounds are thought to play adaptive roles in mediating osmotic adjustment and protecting sub cellular structures in stressed plants. Different approaches have been contemplated to increase the concentrations of proline like compounds in plants grown under stress conditions to increase their stress tolerance. Seven different traditional rice varieties of Assam were evaluated for their response to osmolyte production under physiological drought condition through simulation at three levels of osmotic stress of 0.15 bar, 0.25 bar and 0.56 bar of physiological drought initiated by polyethylene glycol (PEG 6000). Along with the evaluation for osmolyte response the different components of genotypic variation for six different drought-sustaining characters in the seven rice varieties were also substantiated. The results indicated that plant height and seed number have significant genotypic coefficient of variability (GCV) and heritability. Verities like Laodubi, Leserihali, Beriabhanga and Borah were screened out as the best drought sustaining variety
Authors and Affiliations
Chutia J, Borah SP, Tanti B
Influence of culture conditions on mycelial growth and luminescence of Panellus stipticus (bull.) P. Karst
Panellus stipticus (Bull.) P. Karst, a naturally bioluminescent tropical fungus, has been studied in vitro for the optimum culture conditions viz culture media, temperature, pH and days of incubation required for lumines...
Identification of prokaryotic organisms in goat rumen based on metagenomic DNA sequences
A protocol for isolating pure DNA from goat ruminal fluid was developed. DNA was partially digested using ApoI enzymes and ligated onto Lambda ZAP II Predigested EcoR l/CIAP-treated vector to make a metagenomic DNA libra...
Evaluation of air pollution tolerant tree species for Kothagiri Municipal Town, the Nilgiris, Tamil Nadu
Air pollution tolerance index (APTI) has been determined by pooling the at-tributes viz., total chlorophyll, ascorbic acid and moisture content of leaves and leaf extract pH for certain locally available tree species in...
Bioremediation of oil contaminated soil using biosurfactant produced by Pseudomonas aeruginosa
Biosurfactants are surfactants that are biologically produced from bacteria, yeasts and fungi. Examples include Pseudomonas aeruginosa which produce biosurfactants from various substrates including sugars, oil and wastes...
Effect of Ulva lactuca extract on growth and proximate composition of Vigna unguiculata l. Walp
As organic farming gains more attention, seaweed cultivation and its utilization may be an economical approach in agricultural production. The effect of seaweed Ulva lactuca extract on growth and proximate composition of...