IDENTICAL MAJOR GENE LOCI FOR HEAVY METAL TOLERANCES THAT HAVE INDEPENDENTLY EVOLVED IN DIFFERENT LOCAL POPULATIONS AND SUBSPECIES OF SILENE VULGARIS

Evolution; International Journal of Organic Evolution
Henk SchatEric Kuiper

Abstract

Heavy metal tolerant Silene vulgaris plants, originating from different metalliferous sites in Germany and one in Ireland, were crossed to each other and to nontolerant plants from a nonmetalliferous site in The Netherlands. Analysis of the crosses suggested that there were two distinct major gene loci for zinc tolerance among a total of five tolerant populations. The tolerance loci for zinc, copper, and cadmium in the Irish plants were shown to be identical with those in the German populations. It is argued that the occurrence of common major genes for tolerance among different geographically isolated populations must have resulted from independent parallel evolution in local nontolerant ancestral populations. Each of the tolerances studied seems to be controlled by only a few specific major genes.

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Apr 16, 2018·Environmental and Molecular Mutagenesis·Mariolina GullìGiovanna Visioli
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May 6, 2021·Molecular Biology and Evolution·Alexander S T PapadopulosJackie Lighten

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