Studies of the functional activity of mitochondria and cell ultrastructure of the coleoptile in wheat, Agropyron and their hybrids (incomplete amphidiploids) during decreasing temperature

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
N B KhristolyubovaT K Usova

Abstract

The structure of the mitochondria and endoplasmic reticulum in the coleoptile of plants (Triticum aestivum var. Lutescens 329, Agropyron glaucum, Triticum × Agropyron 56-chromosome hybrids, incomplete amphidiploids, TAH, containing 42 wheat chromosomes and 14 chromosomes of genomes D or X of Agropyron), which differ in winterhardiness, was studied after exposure to 0 ° and -4 °C for periods varying from 10 min to 4 days. The functional activity of mitochondria isolated from 3 day old seedlings was also investigated in these cereals. The cells of Triticum and Agropyron seedlings grown at 23 °C were shown to differ in mitochondrial structure. In the cells of TAH both kinds of mitochondria were found.On day 4 of exposure to -4 °C, the mitochondria of Agropyron cells were not changed; the endoplasmic reticulum formed complex closed cavities. Under similar conditions most wheat mitochondria were destroyed and in the rest no cristae were observed.Morphometric analysis indicated that the volume of such mitochondria increases by two times, while the surface area of the internal membranes and cristae decreases by 1.54 times. In such cells, the endoplasmic reticulum is represented only by membranes of the smooth type. The structure of th...Continue Reading

References

May 1, 1968·Journal of General Microbiology·R J Lowry, A S Sussman
Jan 1, 1969·International Review of Cytology·E R Weibel
Oct 1, 1968·The Journal of Cell Biology·E H NewcombW P Wergin
Jan 1, 1968·Zeitschrift für Zellforschung und mikroskopische Anatomie·N Björkman

Citations

May 4, 2010·Journal of the Royal Army Medical Corps·P H Starling
Jan 1, 1977·Journal of Supramolecular Structure·A G Brownell
Jul 1, 1980·Neuroscience and Behavioral Physiology·Z A Kruchenko, G A Taran
Jun 1, 1992·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M PerlS Izhar

Related Concepts

Cereals
Chromosomes
Endoplasmic Reticulum
Genes
Genome
Mitochondria
Phosphorylation
Wheat (Dietary)
Triticum
Morphometric Analysis

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