广西植物Issue(3)：290-293,418,5.DOI:10.3969/j.issn.1000-3142.2014.03.002
植物多倍体中的基因组印记
The genomic imprinting in ployploid plants
摘要
Abstract
Polyploidy is prevalent in nature,which reveals that there is an evolutionary advantage of having multiple sets of genetic materials for adaptive evolution in plants.When a new polyploid formed,many of genome-wide chan-ges arose following the onset of polyploid formation,whereas others emerged on a longer evolutionary timescale.Ow-ing to the influence of genetic and epigenetic mechanisms,the contributions of the parental genomes to the new formed polyploid were not equal.The dominance advantage of the biased parental genome was described as genomic imprinting.Genomic imprinting in polyploid plants showed the genome sequence of bias eliminating,imbalanced gene expression and gene silencing,which appeared to be caused by genome merger and epigenetic mechanisms:DNA methylation,nuclear dominance.This paper aimed to provide a reference for the research of genome evolution and polyploid breeding in plants.关键词
多倍体/基因组印记/表观遗传Key words
polyploidy/genomic imprinting/epigenetic inheritance分类
农业科技引用本文复制引用
刘玉玲,韩兴杰,李同建,徐玲玲,廖亮..植物多倍体中的基因组印记[J].广西植物,2014,(3):290-293,418,5.基金项目
国家自然科学基金(30860027,31260044) （30860027,31260044）
江西省自然科学基金(2009GZN0080) （2009GZN0080）
