重复序列对植物基因组大小进化的影响  

Effects of Repetitive Sequences to Evolution of Plant Genome Size

作　　者：李新玉 王希胤 LI Xin-yu;WANG Xi-yin(College of Life Science,North China University of Science and Technology,Tangshan Hebei 063210,China;Center for Genomics and Computational Biology,North China University of Science and Technology,Tangshan Hebei 063210,China)

机构地区：[1]华北理工大学生命科学学院,河北唐山063210 [2]华北理工大学基因组学与计算生物学研究中心,河北唐山063210

出　　处：《华北理工大学学报（自然科学版）》2021年第4期98-107,共10页Journal of North China University of Science and Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(32070669)。

摘　　要：植物界的基因组大小表现出了惊人的多样性,植物基因组大小主要与重复序列尤其是LTR反转录转座子的扩增与删除有关。近年来,新一代测序技术的发展使植物复杂基因组的重复序列分析变得更加容易。然而,这些高度重复的序列在细胞和发育过程中的作用仍有很大的潜力等待挖掘。该研究重点对重复序列对植物基因组大小的影响进行论述,并对植物基因组大小的研究现状、重复序列的分类以及当前基因组大小研究存在的问题进行了说明与讨论。研究结果表明:反转录转座子的含量与基因组大小正相关,反转座子对基因组大小的进化具有重要意义。The genome size of the plant community shows amazing diversity.The genome size of plant is mainly related to the amplification and deletion of repeat sequences,especially LTR retrotransposons.In recent years,the development of new generation sequencing technology makes it easier to analyze the repeat equence of complex genome.However,the role of these highly repetitive sequences in cell and developmen t is still very potential for us to explore.The effect of repeat sequence on the size of plant genome was discussed,and the research statusof plant genome size,the classification of repetitive sequences and the existing problems of current genome size research were described and discussed.The results show that the content of retrotransposon is positively correlated with genome size,and retrotransposon is of great significance to the evolution of genome size.

关 键 词：基因组大小 反转座子 重复序列 植物 

分 类 号：Q753[生物学—分子生物学]