Changes in form of elongation factor 1 during germination of wheat seeds

Abstract

Two forms of EF‐1 are present in the high‐speed supernatant fraction from wheat embryo homogenate. In embryos from dry seeds EF‐1H, is 55% of the total amount of EF‐1, while after 40 h of germination this form completely disappears. When germination and protein synthesis are accelerated by means of 6‐benzyladenine, the rate of conversion of EF‐1H is increased. On the other hand, the block of germination and of the evolution of protein synthesis by abscisic acid, block this conversion; the block of water uptake, that stops germination and causes a decrease in protein synthesis, reverses the conversion of EF‐1H to EF‐1L, increasing EF‐1H from 15% to 40% of the total. Copyright © 1984, Wiley Blackwell. All rights reserved