Changes in sugars, osmolytes and antioxidants on exogenous application of Validamycin A, PPFM and KCl in black gram under drought stress
Author(s): Mini ML and Jasmine Juliet R
Abstract: Black gram (Vigna mungo L.) is a popular pulse crop that is seriously affected by drought stress. A study was conducted to explore the changes associated with the carbohydrates, osmolytes and antioxidants and the associated drought tolerance in black gram with exogenous application of Validamycin A, Pink-pigmented facultative methylotrophic bacteria (PPFM) and Potassium chloride (KCl). The experiment had eight treatments: Control (C), Validamycin A (VM-A), PPFM, KCl, drought stress (DS), DS+VM-A, DS+PPFM, and DS+KCl. The highest trehalose contents were observed in DS+VM-A (173.69 μg/g) and DS+PPFM (175.12μg/g). DS+PPFM treatment had highest starch (37.02 mg/g) and sucrose (5.70 mg/g) contents. Fructose was higher in DS+PPFM and DS+KCl treatments. Treatments VM-A, PPFM and DS+PPFM showed a higher accumulation of fructans. The proline content ranged between 4.8 and 11.22 μM/g. Treatment DS+KCl exhibited higher carotenoids (8.51 μg/g) whereas DS+PPFM exhibited higher tocopherol content (26.02 μg/g). Though root biomass was affected by drought stress, exogenous application of Validamycin A significantly increased root biomass.
Mini ML, Jasmine Juliet R. Changes in sugars, osmolytes and antioxidants on exogenous application of Validamycin A, PPFM and KCl in black gram under drought stress. Pharma Innovation 2023;12(3):42-45. DOI: 10.22271/tpi.2023.v12.i3a.19494