کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8356246 1542015 2018 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Differential transcriptome patterns associated with early seedling development in a wild and a domesticated common bean (Phaseolus vulgaris L.) accession
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Differential transcriptome patterns associated with early seedling development in a wild and a domesticated common bean (Phaseolus vulgaris L.) accession
چکیده انگلیسی
Genes that control “Domestication Syndrome” traits were direct targets of selection, like those controlling increased seed size in the common bean. However, selection for this trait brought about unintentional selection on genes controlling seedling growth. We hypothesized that wild and domesticated plants have different early seedling growth patterns as an indirect consequence of selection for a larger seed size during domestication, and those differences resulted from changes in gene expression patterns of the wild ancestor. Large seeds pose a challenge to reserve remobilization during early heterotrophic growth, particularly during a transition towards more fertile alluvial soils. To address our hypothesis, we characterized the patterns of gene expression of cotyledon, root, and leaf tissues of 7-day old seedlings of a wild and a landrace accession of the common bean. Differential expression analyses detected genes with contrasting patterns of expression between the two genotypes in all three tissues. Some of the differentially expressed genes with contrasting genotypic patterns are known to have domestication-related signatures of selection. Among these genes were some transcription factors associated with key roles in development. These genes may represent targets of indirect selection and ultimately explain the growth phenotypic differences between wild and domesticated seedlings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Science - Volume 274, September 2018, Pages 153-162
نویسندگان
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