کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2018232 1067841 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variation in intron length in caffeic acid O-methyltransferase (COMT) in Vanilla species (Orchidaceae)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Variation in intron length in caffeic acid O-methyltransferase (COMT) in Vanilla species (Orchidaceae)
چکیده انگلیسی
Variation in intron length in caffeic acid O-methyltransferase (COMT) in Vanilla was studied and demonstrated that COMT genes in Vanilla are organized with four exons and three introns. At least two to four different versions (either allelic or paralogous) of the COMT multigenic family in the genus Vanilla (in terms of intron sizes) were detected. The three introns were differentially variable, with intron-1 being the most length-polymorphic. Patterns of variations were in accordance with known phylogenetic relationships in the genus obtained with neutral markers. In particular, the genus displayed a strong Old World versus New World differentiation with American fragrant species being characterized by a specific 99 bp intron-1 size-variant and a unique 226 bp intron-3 variant. Conversely, leafless species of the genus displayed unexpected variations in intron lengths. Due to their role in primary (lignin) and secondary (phenolics, e.g., vanillin, alkaloids) metabolisms, COMT genes might not be neutral markers, and represent candidate functional markers for resistance, aromatic or medicinal properties of Vanilla species. Investigating the orthologous/paralogous status of the different genes revealed (in terms of intron size) will allow the evolution of the COMT genes to be studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Science - Volume 176, Issue 4, April 2009, Pages 452-460
نویسندگان
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