Different evolutionary patterns among intronless genes in maize genome.
Different evolutionary patterns among intronless genes in maize genome.
复制标题
玉米基因组中无内含子基因的不同进化模式。
DOI:
10.1016/j.bbrc.2014.05.008
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发表时间:
2014-06
期刊:
影响因子:
--
通讯作者:
Cheng, Beijiu
中科院分区:
文献类型:
--
作者:
Yan, Hanwei;Zhang, Wei;Lin, Yongxiang;Dong, Qing;Peng, Xiaojian;Jiang, Haiyang;Zhu, Suwen;Cheng, Beijiu
Intronless genes, as a characteristic feature of prokaryotes, are an important resource for the study of the evolution of gene architecture in eukaryotes. In the study, 14,623 (36.87%) intronless genes in maize were identified and the percentage is greater than that of other monocots and algae. The number of maize intronless genes on each chromosome has a significant linear correlation with the number of total genes on the chromosome and the length of the chromosomes. Intronless genes in maize play important roles in translation and energy metabolism. Evolutionary analysis revealed that 2601 intronless genes conserved among the three domains of life and 2323 intronless genes that had no homology with genes of other species. These two sets of intronless genes were distinct in genetic features, physical locations and function. These results provided a useful source to understand the evolutionary patterns of related genes and genomes and some intronless genes are good candidates for subsequent functional analyses specifically.
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