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Telomere-length regulation in inter-ecotype crosses of Arabidopsis.

Abstract : Telomeres, the nucleoprotein complexes at the ends of eukaryotic chromosomes, are maintained at a species-specific equilibrium length. Arabidopsis thaliana is a self-fertilizing plant and different geographical isolates or ecotypes show differing telomere-lengths. We have exploited this telomere-length polymorphism between Arabidopsis ecotypes to investigate the genetic regulation of telomere length by analysing telomere lengths in 16 different inter-ecotype crosses between plants with differing telomere sizes. With two exceptions, the inter-ecotype hybrid plants present a new telomere-length set point, intermediate between that of the two parents. A regulation mechanism thus shortens the longer and lengthens the shorter telomeres.
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Submitted on : Wednesday, May 25, 2011 - 4:12:22 PM
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G. Maillet, Charles I. White, Maria Eugenia Gallego. Telomere-length regulation in inter-ecotype crosses of Arabidopsis.. Plant Molecular Biology, Springer Verlag (Germany), 2006, 62 (6), pp.859-66. ⟨10.1007/s11103-006-9061-7⟩. ⟨inserm-00595826⟩



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