| Literature DB >> 26714457 |
Tengfei Liu1,2, Chao Fang1,2, Yanming Ma1,3, Yanting Shen1,2, Congcong Li1,2, Qing Li1,2, Min Wang1,2, Shulin Liu1,2, Jixiang Zhang1,2, Zhengkui Zhou1, Rui Yang1, Zheng Wang1, Zhixi Tian1.
Abstract
Although the selection of coding genes during plant domestication has been well studied, the evolution of MIRNA genes (MIRs) and the interaction between microRNAs (miRNAs) and their targets in this process are poorly understood. Here, we present a genome-wide survey of the selection of MIRs and miRNA targets during soybean domestication and improvement. Our results suggest that, overall, MIRs have higher evolutionary rates than miRNA targets. Nonetheless, they do demonstrate certain similar evolutionary patterns during soybean domestication: MIRs and miRNA targets with high expression and duplication status, and with greater numbers of partners, exhibit lower nucleotide divergence than their counterparts without these characteristics, suggesting that expression level, duplication status, and miRNA-target interaction are essential for evolution of MIRs and miRNA targets. Further investigation revealed that miRNA-target pairs that are subjected to strong purifying selection have greater similarities than those that exhibited genetic diversity. Moreover, mediated by domestication and improvement, the similarities of a large number of miRNA-target pairs in cultivated soybean populations were increased compared to those in wild soybeans, whereas a small number of miRNA-target pairs exhibited decreased similarity, which may be associated with the adoption of particular domestication traits. Taken together, our results shed light on the co-evolution of MIRs and miRNA targets during soybean domestication.Entities:
Keywords: Glycine max; Glycine soja; MIRNA gene; co-evolution; domestication; microRNA target; soybean
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Year: 2016 PMID： 26714457 DOI： 10.1111/tpj.13113
Source DB: PubMed Journal: Plant J ISSN： 0960-7412 Impact factor: 6.417