Molecular relationships within Bostrychia tenuissima (Rhodomelaceae, Rhodophyta) |
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Authors: | Giuseppe C Zuccarello John A West Ulf Karsten Robert J King |
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Institution: | School of Biological Science, University of New South Wales, Sydney, New South Wales 2052, Australia.;School of Botany, University of Melbourne, Parkville, Victoria 3052, Australia;Alfred Wegener Institute for Polar and Marine Research, Am Handelshafen 12, D-27570 Bremerhaven, Germany. |
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Abstract: | Bostrychia tenuissima King and Puttock is restricted to southern Australia and New Zealand. Previous studies in Australia have revealed two distinct patterns in the presence of osmotically active polyols. Southern populations only have D-sorbitol whereas northern populations have both D-sorbitol and D-dulcitol. These polyol patterns lead to speculation on the ecotypic differentiation of these two population types. Using single-stranded confirmation polymorphism to rapidly score plastid haplotypes, plus DNA sequencing, a 100% congruence was found between polyol patterns and plastid haplotype. Analysis of 33 B. tenuissima isolates shows that the plastid relationships closely follow biogeo-graphic regions, with south-eastern Australia (southern NSW and Victoria) and South Australia and Tasmania having one haplotype and central and northern NSW having two alternate haplotypes. There is an overlap at the haplotype boundary just south of Sydney, New South Wales. |
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Keywords: | biogeography Bostryciiia tenuissima D-dulcitol D-sorbitol plastid haplotype Rhodomelaceae Rhodophyta single stranded confirmation polymorphism |
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