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Int. J. Mol. Sci. 2015, 16(4), 7839-7850; doi:10.3390/ijms16047839

Genetic Variability and Population Structure of Salvia lachnostachys: Implications for Breeding and Conservation Programs

1
Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Paraná, 80210-170 Curitiba, Paraná, Brazil
2
Embrapa Florestas, 83411-000 Colombo, Paraná, Brazil
3
Departamento de Botânica, Setor de Ciências Biológicas, Universidade Federal do Paraná, 81530-900 Curitiba, Paraná, Brazil
*
Author to whom correspondence should be addressed.
Academic Editor: Marcello Iriti
Received: 8 January 2015 / Revised: 19 March 2015 / Accepted: 20 March 2015 / Published: 8 April 2015
(This article belongs to the Special Issue Plant Molecular Biology)
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Abstract

The genetic diversity and population structure of Salvia lachnostachys Benth were assessed. Inter Simple Sequence Repeat (ISSR) molecular markers were used to investigate the restricted distribution of S. lachnostachys in Parana State, Brazil. Leaves of 73 individuals representing three populations were collected. DNA was extracted and submitted to PCR-ISSR amplification with nine tested primers. Genetic diversity parameters were evaluated. Our analysis indicated 95.6% polymorphic loci (stress value 0.02) with a 0.79 average Simpson’s index. The Nei-Li distance dendrogram and principal component analysis largely recovered the geographical origin of each sample. Four major clusters were recognized representing each collected population. Nei’s gene diversity and Shannon’s information index were 0.25 and 0.40 respectively. As is typical for outcrossing herbs, the majority of genetic variation occurred at the population level (81.76%). A high gene flow (Nm = 2.48) was observed with a correspondingly low fixation index. These values were generally similar to previous studies on congeneric species. The results of principal coordinate analysis (PCA) and of arithmetic average (UPGMA) were consistent and all three populations appear distinct as in STRUCTURE analysis. In addition, this analysis indicated a majority intrapopulation genetic variation. Despite the human pressure on natural populations our study found high levels of genetic diversity for S. lachnostachys. This was the first molecular assessment for this endemic species with medicinal proprieties and the results can guide for subsequent bioprospection, breeding programs or conservation actions. View Full-Text
Keywords: intraspecific diversity; ISSR; Labiatae; Southern Brazil intraspecific diversity; ISSR; Labiatae; Southern Brazil
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MDPI and ACS Style

Erbano, M.; Schühli, G.S.; Santos, É.P. Genetic Variability and Population Structure of Salvia lachnostachys: Implications for Breeding and Conservation Programs. Int. J. Mol. Sci. 2015, 16, 7839-7850.

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