One subgenome to rule them all: underlying mechanisms of subgenome dominance

被引：91

作者：

Alger, Elizabeth, I ^{[1
]}

Edger, Patrick P. ^{[1
]}

机构：

[1] Michigan State Univ, Dept Hort, E Lansing, MI 48824 USA

来源：

CURRENT OPINION IN PLANT BIOLOGY | 2020年 / 54卷

基金：

美国国家科学基金会;

关键词：

GENE-EXPRESSION; TRANSPOSABLE ELEMENTS; GENOME DUPLICATIONS; POLYPLOIDIZATION; DIFFERENTIATION; FRACTIONATION; ANCESTOR; INSIGHTS; BALANCE; HYBRID;

D O I：

10.1016/j.pbi.2020.03.004

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Allopolyploids, which are formed from the hybridization of two or more diploid progenitor species, often experience subgenome dominance, where one of the parental genomes (subgenomes) has higher levels of gene expression and ultimately greater gene retention compared to the other subgenomes. Low transposable element (TE) abundance near genes has been associated with the dominant subgenome in several allopolyploids, but TEs are unlikely to be the only causal factor responsible for subgenome expression dominance. In this review, we will examine the role of TEs in subgenome dominance as well as discuss how genetic incompatibilities among subgenomes likely contributes to the rapid emergence of subgenome dominance. Lastly, we highlight several burning questions about subgenome dominance that remain largely unanswered.

引用

页码：108 / 113

页数：6

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