biologia plantarum

Biologia plantarum 45:71-76, 2002 | DOI: 10.1023/A:1015184004665

Heat Shock Induced Lipid Changes and Solute Leakage in Germinating Seeds of Pigeonpea

K.V. Madhava Rao¹, V. Sridevi¹, N.V. Satyanarayana¹

¹ Department of Botany, Andhra University, Visakhapatnam, India

Heat shock (HS) reduced total lipid and phospholipid contents and their synthesis in germinating seeds of pigeonpea [Cajanus cajan (L.) Millspaugh]. Lipid peroxidation was also enhanced with increasing temperature and HS duration. HS influenced lipid metabolism to a higher extent at 45°C than at 40°C. This altered lipid metabolism and lipid peroxidation was associated with the loss of various solutes from the germinating seeds, and modification of growth and development. Pretreatment of germinating seeds at 40°C for 1 h or at 45°C for 10 min followed by incubation at 28°C for 3 h prior to 45°C for 2 h ameliorated solute leakage due to reduced lipid peroxidation and improvement in lipid content and membrane function.

Keywords: Cajanus cajan; lipid peroxidation; phospholipid

Subjects: Cajanus cajan; germination, solute leakage, heat shock; heat-shock, lipid changes; pigeon pea, heat-shock lipid changes; seed germination

Published: March 1, 2002  Show citation