Comparative physiological, antioxidant and proteomic investigation reveal robust response to cold stress in Digitalis purpurea L.

Background Of The Study: Digitalis purpurea (L) is an important medicinal plant growing at Alpine region of Himalayas and withstands low temperatures and harsh climatic conditions existing at high altitude. It serves as an ideal plant system to decipher the tolerance to cold stress (CS) in plants from high altitudes.

Methods And Results: To understand the complexity of plant response to CS, we performed a comparative physiological and biochemical study complemented with proteomics in one-month-old D.

Low temperature elicits differential biochemical and antioxidant responses in maize () genotypes with different susceptibility to low temperature stress.

Unlabelled: Maize, a C sub-tropical crop, possesses higher temperature optima as compared to the C plants. Low temperature (LT) stress confines the growth and productivity of maize. In this context, two maize genotypes, LT tolerant Gurez local and LT susceptible Gujarat-Maize-6 (G-M-6) were analysed in present study for various osmolytes and gene expression of antioxidant enzymes including Ascorbate-glutathione (AsA-GSH) besides trehalose biosynthetic pathways.

Stem sugar accumulation in sweet sorghum - activity and expression of sucrose metabolizing enzymes and sucrose transporters.

Sugar metabolism was studied in sweet sorghum (SSV74) that is known to store sugars in the mature internodes and which is reported to give grain yields twice that of a grain sorghum variety (SPV1616). Comparison of sugar accumulation in these two varieties was carried out at three stages of growth and in the upper and lower internodes. In spite of large differences in the level of sugar accumulation, osmolarity of the sap did not vary as significantly in the two varieties.