VARIABILITY OF CHROMOSOME NUMBERS AS FACTOR OF MICROEVOLUTION AND ADAPTATION OF CONIFERS

Apply

VARIABILITY OF CHROMOSOME NUMBERS AS FACTOR OF MICROEVOLUTION AND ADAPTATION OF CONIFERS

Journal Title: Фактори експериментальної еволюції організмів - Year 2016, Vol 18, Issue

Abstract

Aim. Analysis of investigations of chromosome numbers in populations of coniferous species in wide range of their growing conditions are presented. Methods. Chromosome numbers studied in metaphase cells with a complete set of chromosomes in root tip meristems. Results. Study of chromosome numbers in populations of conifers from Pinaceae (10 species and 1 interspecific hybrid) and Cupressaceae (4 species) families growing under optimal conditions and from ecotopes with different level of extremality. Seed material were collected in the territory of Russia, Ukraine, Bulgaria, Czech Republic, Kazakhstan. Conclusions. There is some trend manifested in availability of mixoploidy, aneuploidy, an increasing of variability degree of chromosome numbers, presence of B chromosomes in seed progeny of conifers according to the strengthening of extreme temperature and edaphic conditions of their habitat – in the ecological limits of species propagation, with increasing altitudinal zones, on the southern and northern boundaries of the areas inside and outside, in the areas of human influence and at introductions.

Authors and Affiliations

T. S SEDELNIKOVA

Keywords

chromosome numbers coniferous species extreme conditions

Expression profiling of kinesins, involved in the development of autophagy in Arabidopsis thaliana, and the role of tubulin acetylation in the interaction of Atg8 protein with microtubules

Aim. To investigate the interrelation between changes in the expression levels of kinesin genes that are potentially involved in the development of stress-induced autophagy in Arabidopsis thaliana by means of microtubule...

EP ID EP179360
DOI -
Views 115
Downloads 0