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Genetic diversity across natural populations of three montane plant species from the Western Ghats, India revealed by intersimple sequence repeats

Deshpande, AU and Apte, GS and Bahulikar, RA and Lagu, MD and Kulkarni, BG and Suresh, HS and Singh, NP and Rao, MKV and Gupta, VS and Pant, A and Ranjekar, PK (2001) Genetic diversity across natural populations of three montane plant species from the Western Ghats, India revealed by intersimple sequence repeats. In: Molecular Ecology, 10 (10). pp. 2397-2408.

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Abstract

We analysed genetic diversity across the natural populations of three montane plant species in the Western Ghats, India; Symplocos laurina, Gaultheria fragrantissima and Eurya nitida using intersimple sequence repeat (ISSR) markers. These markers revealed genetic diversity within the populations of these plants from Nilgiri and also between two populations of S. laurina from Nilgiri and Amboli. Genetic variation within and between populations was analysed using various parameters such as total heterozygosity (HT), heterozygosity within population (HS), diversity between populations (DST), coefficient of population differentiation (GST), genetic distance (D) and gene flow (Nm). Total heterozygosity (HT) was higher for S. laurina (0.238) than for G. fragrantissima (0.172) and E. nitida (0.182). Two populations of S. laurina, separated by > 1000 km, showed a high within-population variation (53.7%) and a low gene flow (Nm = 0.447). upgma phenograms depicted a tendency of accessions to group according to their geographical locations in all the three plant species. The insight gained into the genetic structure of these plant populations might have implications in developing in situ and ex situ conservation strategies.

Item Type: Journal Article
Additional Information: The copyright of this article belongs to John Wiley and Sons.
Keywords: Eurya nitida;Gaultheria fragrantissima;Gaultheria fragrantissima;genetic diversity;heterozygosity;ISSR markers;Symplocos laurina
Department/Centre: Division of Biological Sciences > Centre for Ecological Sciences
Date Deposited: 15 Sep 2004
Last Modified: 11 Jan 2012 10:12
URI: http://eprints.iisc.ernet.in/id/eprint/1854

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