Biopolymers and cell. Volume 20. № 4. 410-415.

E. N. Tishchenko, C. I. Mychalskaya, T. M. Daskaluk, V. F. Mar'yushkin

DNA denaturation during senescence of soybean pod valve

Summary

During senescence of pod valve of soybean (Glycine max L., Merr.) no olygonucleocomic DNA fragmentation is observed and total DNA is present as high polymeric fragments with an equal molecular mass, which, nevertheless, are subjected to partial denaturation in the course of dehydration and chlorophyll disruption. These data are in favour of a conception that senescence of soybean pod valve may be considered as some form of programmed cell death (PCD). Also, they evidence the differential processes of DNA degradation during the plant ontogenesis PCD.