Programmed cell death induced by heat shock in mung bean seedlings

Programmed cell death induced by heat shock in mung bean seedlings

2011

A:PS

The effect of heat shock (HS) on death, weight and membrane leakage of mung bean seedlings as well as on early biochemical markers of PCD (cytochrome c release from mitochondria and intemucleosomal DNA fragmentation) was studied. It was found that heat shock ranging from 48-55°C stimulated the releasing of cytochrome c from mitochondria to cytosol and the nuclear DNA fragmentation occurred during the first six hours of heat treatment. Sublethal heat shock (48°C) gives rise to non-ladder DNA degradation. Lethal heat shock (50 and 55°C) generates two types, ladder and non-ladder, DNA degradation. Intemuc1eosomal (ladder) DNA fragmentation and cytochrome c releasing suggest the programmed cell death occurs in mung bean seedling induced by heat shack.

v.52(1):73-78, BOTANICAL STUDIES

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