tailieunhanh - báo cáo khoa học: " Transcription profiles of mitochondrial genes correlate with mitochondrial DNA haplotypes in a natural population of Silene vulgaris"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Transcription profiles of mitochondrial genes correlate with mitochondrial DNA haplotypes in a natural population of Silene vulgaris | Elansary et al. BMC Plant Biology 2010 10 11 http 1471-2229 10 11 BMC Plant Biology RESEARCH ARTICLE Open Access Transcription profiles of mitochondrial genes correlate with mitochondrial DNA haplotypes in a natural population of Silene vulgaris 11 11 2 3 13 Hosam O Elansary Karel Muller Matthew S Olson Helena Storchová 1 Abstract Background Although rapid changes in copy number and gene order are common within plant mitochondrial genomes associated patterns of gene transcription are underinvestigated. Previous studies have shown that the gynodioecious plant species Silene vulgaris exhibits high mitochondrial diversity and occasional paternal inheritance of mitochondrial markers. Here we address whether variation in DNA molecular markers is correlated with variation in transcription of mitochondrial genes in S. vulgaris collected from natural populations. Results We analyzed RFLP variation in two mitochondrial genes coxl and atpl in offspring often plants from a natural population of S. vulgaris in Central Europe. We also investigated transcription profiles of the atpl and coxl genes. Most DNA haplotypes and transcription profiles were maternally inherited for these transcription profiles were associated with specific mitochondrial DNA haplotypes. One individual exhibited a pattern consistent with paternal inheritance of mitochondrial DNA this individual exhibited a transcription profile suggestive of paternal but inconsistent with maternal inheritance. We found no associations between gender and transcript profiles. Conclusions Specific transcription profiles of mitochondrial genes were associated with specific mitochondrial DNA haplotypes in a natural population of a gynodioecious species S. vulgaris. Our findings suggest the potential for a causal association between rearrangements in the plant mt genome and transcription product variation. Background Despite numerous investigations of the structure and dynamics of the plant mitochondrial .