[Role of repetitive sequence and heterochromatize in recombination suppression of plant sex chromosomes].
Suppression of recombination is the prerequisite for plant sex chromosome evolution from a pair of autosomes. Recombination suppression around the locus controlling sex determination results in sex chromosome degeneration and differentiation. Important events such as repetitive sequence accumulation, heterochromatize, and DNA methylation have relation to recombination suppression. Accumulation of repetitive DNA sequence, including transposable elements and satellite DNA, leads to primitive sex chromosome differentiated on morphological and molecular structure, and also gives rise to chromosome heterochromatize, and thus recombination between sex chromosomes was suppressed. Here, we re-viewed the advances in this field, meanwhile, the function of DNA methylation in recombination suppression was analyzed.
Gao
Wu-Jun
WJ
College of Life Science, Henan Normal University, Xinxiang 453007, China. gaowujun@yahoo.cn
Xie
Lu
L
Lu
Jing-Wen
JW
Deng
Chuan-Liang
CL
Lu
Long-Dou
LD
D032461:Chromosomes, Plant / Q000235:genetics*; D019175:DNA Methylation; D010944:Plants / Q000235:genetics*; D011995:Recombination, Genetic; D012091:Repetitive Sequences, Nucleic Acid; D012730:Sex Chromosomes / Q000235:genetics*