Role of endosulfan in mediating stress responses in Sorghum bicolor (L.) Moench.
Present study revealed the importance of endosulfan in mediating stress responses in Sorghum bicolor L. Moench (variety JP-1-1). The seeds treated with different concentrations (0.2, 0.4 and 0.6%) of endosulfan showed a significant decrease in percent germination over control. As the concentration increased, the shoot length, root length and biomass decreased. The amount of chlorophyll-a and protein decreased gradually with the increase in endosulfan concentration, whereas phenol and proline contents increased from 1.08 to 1.57 mg g(-1) and 0.18 to 0.98 mg g(-1), respectively. Chlorophyll-b decreased in 0.2% (0.97 mg g(-1)) as compared to control and revealed a gradual increase in 0.4% (1.11 mg g(-1)) and 0.6% (1.13 mg g(-1)). Endosulfan treatment suppressed the catalase and protease activity, but significantly increased the level of peroxidase, polyphenol oxidase, SOD and amylase enzymes. Lowerdose (0.2%) of endosulfan stimulated the activity of amylases.
Vidyasagar
G M
GM
Department of P.G. Studies and Research in Botany, Gulbarga University, Gulbarga, India. gmvidyasagar@rediffmail.com
Kotresha
D
D
Sreenivasa
N
N
Karnam
Ramesh
R
D004726:Endosulfan / Q000494:pharmacology*; D007306:Insecticides / Q000494:pharmacology*; D045868:Sorghum / Q000187:drug effects* / Q000502:physiology; D013312:Stress, Physiological / Q000187:drug effects*
D007306:Insecticides; D004726:Endosulfan