Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA.
Plant Cell. 2011 Dec;23(12):4241-53. doi: 10.1105/tpc.111.093567. Epub 2011 Dec 16.
Certain types of gene families, such as those encoding most families of transcription factors, maintain their chromosomal syntenic positions throughout angiosperm evolutionary time. Other nonsyntenic gene families are prone to deletion, tandem duplication, and transposition. Here, we describe the chromosomal positional history of all genes in Arabidopsis thaliana throughout the rosid superorder. We introduce a public database where researchers can look up the positional history of their favorite A. thaliana gene or gene family. Finally, we show that specific gene families transposed at specific points in evolutionary time, particularly after whole-genome duplication events in the Brassicales, and suggest that genes in mobile gene families are under different selection pressure than syntenic genes.
某些类型的基因家族，如编码大多数转录因子家族的基因，在被子植物进化过程中保持其染色体的同线性位置。其他非同线性基因家族易于缺失、串联重复和转位。在这里，我们描述了蔷薇目中所有拟南芥基因的染色体位置历史。我们引入了一个公共数据库，研究人员可以在其中查询他们喜爱的拟南芥基因或基因家族的位置历史。最后，我们表明，特定的基因家族在进化时间的特定点发生转位，特别是在 Brassicales 中的全基因组复制事件之后，并表明移动基因家族中的基因受到的选择压力与同线性基因不同。
