Evidence against an effect of plant hormones on thermal denaturation of pea nucleoprotein.

Pea (Pisum sativum L.) nucleohistone and chromatin which had been treated both in vivo and in vitro with indoleacetic acid and gibberellic acid were thermally denatured in low and high ionic strength media. Contrary to previous reports, the hormones had no effect on thermal denaturation profiles. The previously observed biphasic nature of the profiles obtained at high ionic strength is explained.