Abstract:
BACKGROUND:The 12-oxo-phytodienoic acid reductases (OPRs) are enzymes that catalyze the reduction of double-bonds in alpha, beta-unsaturated aldehydes or ketones and are part of the octadecanoid pathway that converts linolenic acid to jasmonic acid. In plants, OPRs belong to the old yellow enzyme family and form multigene families. Although discoveries about this family in Arabidopsis and other species have been reported in some studies, the evolution and function of multiple OPRs in plants are not clearly understood. RESULTS:A comparative genomic analysis was performed to investigate the phylogenetic relationship, structural evolution and functional divergence among OPR paralogues in plants. In total, 74 OPR genes were identified from 11 species representing the 6 major green plant lineages: green algae, mosses, lycophytes, gymnosperms, monocots and dicots. Phylogenetic analysis showed that seven well-conserved subfamilies exist in plants. All OPR genes from green algae were clustered into a single subfamily, while those from land plants fell into six other subfamilies, suggesting that the events leading to the expansion of the OPR family occurred in land plants. Further analysis revealed that lineage-specific expansion, especially by tandem duplication, contributed to the current OPR subfamilies in land plants after divergence from aquatic plants. Interestingly, exon/intron structure analysis showed that the gene structures of OPR paralogues exhibits diversity in intron number and length, while the intron positions and phase were highly conserved across different lineage species. These observations together with the phylogenetic tree revealed that successive single intron loss, as well as indels within introns, occurred during the process of structural evolution of OPR paralogues. Functional divergence analysis revealed that altered functional constraints have occurred at specific amino acid positions after diversification of the paralogues. Most notably, significant functional divergence was also found in all pairs, except for the II/IV, II/V and V/VI pairs. Strikingly, analysis of the site-specific profiles established by posterior probability revealed that the positive-selection sites and/or critical amino acid residues for functional divergence are mainly distributed in alpha-helices and substrate binding loop (SBL), indicating the functional importance of these regions for this protein family. CONCLUSION:This study highlights the molecular evolution of the OPR gene family in all plant lineages and indicates critical amino acid residues likely relevant for the distinct functional properties of the paralogues. Further experimental verification of these findings may provide valuable information on the OPRs' biochemical and physiological functions.
journal_name
BMC Evol Bioljournal_title
BMC evolutionary biologyauthors
Li W,Liu B,Yu L,Feng D,Wang H,Wang Jdoi
10.1186/1471-2148-9-90subject
Has Abstractpub_date
2009-05-05 00:00:00pages
90issn
1471-2148pii
1471-2148-9-90journal_volume
9pub_type
杂志文章abstract:BACKGROUND:Extended parental care is a complex reproductive strategy in which progenitors actively look after their offspring up to - or beyond - the first juvenile stage in order to maximize their fitness. Although the euarthropod fossil record has produced several examples of brood-care, the appearance of extended pa...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/s12862-018-1262-6
更新日期:2018-09-29 00:00:00
abstract:BACKGROUND:In the short-term, organisms acclimate to stress through phenotypic plasticity, but in the longer term they adapt to stress genetically. The mutations that accrue during adaptation may contribute to completely novel phenotypes, or they may instead act to restore the phenotype from a stressed to a pre-stress ...
journal_title:BMC evolutionary biology
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doi:10.1186/s12862-015-0457-3
更新日期:2015-09-02 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-335
更新日期:2011-11-17 00:00:00
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pub_type: 杂志文章
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更新日期:2009-08-20 00:00:00
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更新日期:2019-06-11 00:00:00
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更新日期:2019-12-30 00:00:00
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更新日期:2019-01-16 00:00:00
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更新日期:2009-11-30 00:00:00
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更新日期:2014-08-28 00:00:00
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更新日期:2013-07-10 00:00:00
abstract:BACKGROUND:Integron systems are now recognized as important agents of bacterial evolution and are prevalent in most environments. One of the human pathogens known to harbor chromosomal integrons, the Treponema spirochetes are the only clade among spirochete species found to carry integrons. With the recent release of m...
journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2013-01-22 00:00:00
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更新日期:2007-09-13 00:00:00
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更新日期:2020-12-09 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-3-13
更新日期:2003-06-05 00:00:00
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pub_type: 杂志文章
doi:10.1186/1471-2148-4-49
更新日期:2004-11-22 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-12-220
更新日期:2012-11-16 00:00:00
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更新日期:2019-08-28 00:00:00
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更新日期:2016-06-29 00:00:00
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journal_title:BMC evolutionary biology
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更新日期:2015-05-13 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2008-06-10 00:00:00
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pub_type: 杂志文章
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更新日期:2014-09-23 00:00:00
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pub_type: 杂志文章
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更新日期:2018-02-06 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2018-01-19 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-8-331
更新日期:2008-12-16 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
doi:10.1186/1471-2148-11-147
更新日期:2011-05-27 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2011-07-22 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2014-06-02 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2007-03-21 00:00:00
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journal_title:BMC evolutionary biology
pub_type: 杂志文章
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更新日期:2010-07-27 00:00:00