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Abstract Detail


Systematics Section

Lauron-Moreau, Aurelien [1], Pitre, Frederic, E. [1], Labrecque, Michel [1], Brouillet, Luc [1].

Molecular phylogeny of Salix (Salicaceae) in order to characterize the origin of native S.eriocephala : a new perspective for biomass production.

Fast growing willows (Salix sp.) are increasingly used in Europe and North America for biomass production and other environmental applications. However, the phylogeny of willows is incomplete, which slows down the selection of suitable native species and the development of improvement programs. Salix includes around 500 species worldwide, mainly in temperate and cold regions of the Northern Hemisphere, and more than 100 species are found in North America. A phylogeny including introduced species already in usage along with native species could help uncover clades with suitable native species for biomass production, such as S.eriocephala. We gathered leaf material from ca. 50 native diploid willows and introduced cultivated species. We sequenced the chloroplastic gene matK, the ITS region, and the nuclear gene calcineurin-likephosphoesterase. Phylogenetic analyses were carried out using parsimony and Bayesian approaches and Populus was used as the outgroup. A first analysis used matK and ITS to identify clades in the genus. Two major clades were found in the analyses, one of which included the species of interest. We then focused on those clades where cultivated introduced species and S. eriocephala were included for a second analysis using calcineurin-likephosphoesterase. The phylogenetic tree indicates that species of interest might have an evolutionary relationship. Polyploid willows will eventually be added to the analysis as they are also potentially useful in environmental applications. More nuclear markers must also be developed to increase the resolution of our analysis.

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1 - Universite de Montreal, Institut de recherche en biologie vegetale, 4101 rue Sherbrooke Est, Montreal, QC, H1X 2B2, Canada

Keywords:
Salix
molecular phylogeny.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Khorassan Ballroom/Chase Park Plaza
Date: Monday, July 11th, 2011
Time: 5:30 PM
Number: PSY022
Abstract ID:227


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