Genome-Wide Characterization of Nonreference Transposons Reveals Evolutionary Propensities of Transposons in Soybean
Publication in refereed journal

香港中文大學研究人員

引用次數
替代計量分析
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其它資訊
摘要Preferential accumulation of transposable elements (TEs), particularly long terminal repeat retrotransposons (LTR-RTs), in recombination-suppressed pericentromeric regions seems to be a general pattern of TE distribution in flowering plants. However, whether such a pattern was formed primarily by preferential TE insertions into pericentromeric regions or by selection against TE insertions into euchromatin remains obscure. We recently investigated TE insertions in 31 resequenced wild and cultivated soybean (Glycine max) genomes and detected 34,154 unique nonreference TE insertions mappable to the reference genome. Our data revealed consistent distribution patterns of the nonreference LTR-RT insertions and those present in the reference genome, whereas the distribution patterns of the nonreference DNA TE insertions and the accumulated ones were significantly different. The densities of the nonreference LTR-RT insertions were found to negatively correlate with the rates of local genetic recombination, but no significant correlation between the densities of nonreference DNA TE insertions and the rates of local genetic recombination was detected. These observations suggest that distinct insertional preferences were primary factors that resulted in different levels of effectiveness of purifying selection, perhaps as an effect of local genomic features, such as recombination rates and gene densities that reshaped the distribution patterns of LTR-RTs and DNA TEs in soybean.
著者Tian ZX, Zhao MX, She MY, Du JC, Cannon SB, Liu X, Xu X, Qi XP, Li MW, Lam HM, Ma JX
期刊名稱Plant Cell
出版年份2012
月份11
日期1
卷號24
期次11
出版社AMER SOC PLANT BIOLOGISTS
頁次4422 - 4436
國際標準期刊號1040-4651
電子國際標準期刊號1532-298X
語言英式英語
Web of Science 學科類別Biochemistry & Molecular Biology; BIOCHEMISTRY & MOLECULAR BIOLOGY; Cell Biology; CELL BIOLOGY; Plant Sciences; PLANT SCIENCES

上次更新時間 2021-16-01 於 00:39