title: Genomic survey, expression profile and co-expression network analysis of OsWD40 family in rice.
abstract: BACKGROUND
  WD40 proteins represent a large family in eukaryotes, which have been involved in a broad spectrum of crucial functions. Systematic characterization and co-expression analysis of OsWD40 genes enable us to understand the networks of the WD40 proteins and their biological processes and gene functions in rice.
  
  
  RESULTS
  In this study, we identify and analyze 200 potential OsWD40 genes in rice, describing their gene structures, genome localizations, and evolutionary relationship of each member. Expression profiles covering the whole life cycle in rice has revealed that transcripts of OsWD40 were accumulated differentially during vegetative and reproductive development and preferentially up or down-regulated in different tissues. Under phytohormone treatments, 25 OsWD40 genes were differentially expressed with treatments of one or more of the phytohormone NAA, KT, or GA3 in rice seedlings. We also used a combined analysis of expression correlation and Gene Ontology annotation to infer the biological role of the OsWD40 genes in rice. The results suggested that OsWD40 genes may perform their diverse functions by complex network, thus were predictive for understanding their biological pathways. The analysis also revealed that OsWD40 genes might interact with each other to take part in metabolic pathways, suggesting a more complex feedback network.
  
  
  CONCLUSIONS
  All of these analyses suggest that the functions of OsWD40 genes are diversified, which provide useful references for selecting candidate genes for further functional studies.
authors.affiliation: National Key Laboratory of Crop Genetic Improvement and National Center of Plant Gene Research Wuhan, Huazhong Agricultural University, Wuhan 430070, China.
authors.forename: Yidan
authors.initials: Y
authors.lastname: Ouyang
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Huang
authors.forename: Zhanhua
authors.initials: Z
authors.lastname: Lu
authors.forename: Jialing
authors.initials: J
authors.lastname: Yao
mesh_terms: D000595:Amino Acid Sequence; D032461:Chromosomes, Plant; D016000:Cluster Analysis; D020440:Gene Duplication; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant / Q000187:drug effects; D023061:Gene Order; D053263:Gene Regulatory Networks; D017343:Genes, Plant; D023281:Genomics; D058977:Molecular Sequence Annotation; D008969:Molecular Sequence Data; D005810:Multigene Family; D012275:Oryza / Q000145:classification / Q000235:genetics*; D010802:Phylogeny; D010937:Plant Growth Regulators / Q000494:pharmacology; D011401:Promoter Regions, Genetic
chemical_list: D010937:Plant Growth Regulators