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Divergence and adaptive evolution of the gibberellin oxidase genes in plants
Huang, Yuan; Wang, Xi; Ge, Song1; Rao, Guang-Yuan
2015
Source PublicationBMC EVOLUTIONARY BIOLOGY
ISSN1471-2148
Volume15
AbstractBackground: The important phytohormone gibberellins (GAs) play key roles in various developmental processes. GA oxidases (GAoxs) are critical enzymes in GA synthesis pathway, but their classification, evolutionary history and the forces driving the evolution of plant GAox genes remain poorly understood. Results: This study provides the first large-scale evolutionary analysis of GAox genes in plants by using an extensive whole-genome dataset of 41 species, representing green algae, bryophytes, pteridophyte, and seed plants. We defined eight subfamilies under the GAox family, namely C-19-GA2ox, C-20-GA2ox, GA20ox, GA3ox, GAox-A, GAox-B, GAox-C and GAox-D. Of these, subfamilies GAox-A, GAox-B, GAox-C and GAox-D are described for the first time. On the basis of phylogenetic analyses and characteristic motifs of GAox genes, we demonstrated a rapid expansion and functional divergence of the GAox genes during the diversification of land plants. We also detected the subfamily-specific motifs and potential sites of some GAox genes, which might have evolved under positive selection. Conclusions: GAox genes originated very early-before the divergence of bryophytes and the vascular plants and the diversification of GAox genes is associated with the functional divergence and could be driven by positive selection. Our study not only provides information on the classification of GAox genes, but also facilitates the further functional characterization and analysis of GA oxidases.
KeywordCharacteristic motif Functional divergence Gibberellin Phytohormones Positive selection 2-oxoglutarate-dependent dioxygenase
Subject AreaEvolutionary Biology ; Genetics & Heredity
DOI10.1186/s12862-015-0490-2
Indexed BySCI
Language英语
WOS KeywordDETECTING MOLECULAR ADAPTATION ; MULTIPLE SEQUENCE ALIGNMENT ; CODON-SUBSTITUTION MODELS ; AMINO-ACID SITES ; POSITIVE SELECTION ; SECONDARY METABOLISM ; MAXIMUM-LIKELIHOOD ; DUPLICATE GENES ; FUNCTIONAL-CHARACTERIZATION ; PHYSCOMITRELLA-PATENS
WOS Research AreaScience Citation Index Expanded (SCI-EXPANDED)
WOS IDWOS:000361811600001
PublisherBIOMED CENTRAL LTD
SubtypeArticle
Publication PlaceLONDON
Funding OrganizationNational Natural Science Foundation of China [30990240]
Corresponding Author Emailrao@pku.edu.cn
OAGreen Published, gold
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/26000
Collection系统与进化植物学国家重点实验室
Affiliation1.Peking Univ, Coll Life Sci, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China
Recommended Citation
GB/T 7714
Huang, Yuan,Wang, Xi,Ge, Song,et al. Divergence and adaptive evolution of the gibberellin oxidase genes in plants[J]. BMC EVOLUTIONARY BIOLOGY,2015,15.
APA Huang, Yuan,Wang, Xi,Ge, Song,&Rao, Guang-Yuan.(2015).Divergence and adaptive evolution of the gibberellin oxidase genes in plants.BMC EVOLUTIONARY BIOLOGY,15.
MLA Huang, Yuan,et al."Divergence and adaptive evolution of the gibberellin oxidase genes in plants".BMC EVOLUTIONARY BIOLOGY 15(2015).
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