ArticleScientific reports2016
Imbalanced positive selection maintains the functional divergence of duplicated DIHYDROKAEMPFEROL 4-REDUCTASE genes.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed, 13 citations in OpenAlex.
- Anthocyanin regulatory networks in Solanum tuberosum L. leaves elucidated via integrated metabolomics, transcriptomics, and StAN1 overexpression.BMC plant biology · 2022Article
- Co-expression network analyses of anthocyanin biosynthesis genes in Ruellia (Wild Petunias; Acanthaceae).BMC ecology and evolution · 2022Article
- Article
- Functional divergence and intron variability during evolution of angiosperm TERMINAL FLOWER1 (TFL1) genes.Scientific reports · 2017Article
- Continuation of the genetic divergence of ecological speciation by spatial environmental heterogeneity in island endemic plants.Scientific reports · 2017Article
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5 authors at 3 institutions in 2 countries.
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Abstract
Gene duplication could be beneficial by functional division but might increase the risk of genetic load. The dynamics of duplicated paralogs number could involve recombination, positive selection, and functional divergence. Duplication of DIHYDROFLAVONOL 4-REDUCTASE (DFR) has been reported in several organisms and may have been retained by escape from adaptive conflict (EAC). In this study, we screened the angiosperm DFR gene focusing on a diversified genus Scutellaria to investigate how these duplicated genes are retained. We deduced that gene duplication involved multiple independent events in angiosperms, but the duplication of DFR was before the divergence of Scutellaria. Asymmetric positive selective pressures resulted in different evolutionary rates between the duplicates. Different numbers of regulatory elements, differential codon usages, radical amino acid changes, and differential gene expressions provide evidences of functional divergence between the two DFR duplicates in Scutellaria, implying adaptive subfunctionalization between duplicates. The discovery of pseudogenes accompanying a reduced replacement rate in one DFR paralogous gene suggested possibly leading to "loss of function" due to dosage imbalance after the transient adaptive subfunctionalization in the early stage of duplication. Notwithstanding, episodic gene duplication and functional divergence may be relevant to the diversification of ecological function of DFR gene in Scutellaria.
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