title: Genomic organization, phylogenetic comparison and expression profiles of annexin gene family in tomato (Solanum lycopersicum).
abstract: Annexins have been suggested to play pivotal roles in stress resistance and plant development. However, related studies on fruit-bearing plants, especially on fruit development, are very limited. In the present study, we provide a comprehensive overview of the annexin family in tomato, describing the gene structure, promoter cis-regulatory elements, organ expression profile, and gene expression patterns under hormone and stress treatments. Bioinformatic analysis revealed that the nine tomato annexins were structurally different from their animal counterparts, but highly conserved annexin domains were still found in most of them. Cis-regulatory element prediction showed that there were important elements in the 2kb upstream promoter regions, including stress- and hormone-responsive-related elements. The expression patterns of these genes were investigated, and the results revealed that they were regulated under developmental processes and environmental stimuli. Among them, AnnSl1.1 and AnnSl2 were highly expressed in most of the tested organs. Genes preferentially or specifically expressed in organs, such as stigma or ovary (AnnSl6), stamen (AnnSl8), and fruit pericarp (AnnSl1.2 and AnnSl9), were identified. Some annexin genes were induced by plant hormones including abscisic acid (AnnSl3, AnnSl6, AnnSl8, and AnnSl9) and gibberellic acid (AnnSl1.1, AnnSl1.2, AnnSl4, and AnnSl7). Most of these annexin genes were induced by salt, drought, wounding, and heat or cold stresses. The present study provides significant information for understanding the diverse roles of annexins in tomato growth and development.
authors.affiliation: Key Laboratory of Horticultural Plant Biology, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, PR China.
authors.forename: Yongen
authors.initials: Y
authors.lastname: Lu
authors.forename: Bo
authors.initials: B
authors.lastname: Ouyang
authors.forename: Junhong
authors.initials: J
authors.lastname: Zhang
authors.forename: Taotao
authors.initials: T
authors.lastname: Wang
authors.forename: Chen
authors.initials: C
authors.lastname: Lu
authors.forename: Qinqin
authors.initials: Q
authors.lastname: Han
authors.forename: Shengnan
authors.initials: S
authors.lastname: Zhao
authors.forename: Zhibiao
authors.initials: Z
authors.lastname: Ye
authors.forename: Hanxia
authors.initials: H
authors.lastname: Li
mesh_terms: D000595:Amino Acid Sequence; D017302:Annexins / Q000235:genetics* / Q000378:metabolism; D002874:Chromosome Mapping; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D023061:Gene Order / Q000235:genetics; D017343:Genes, Plant / Q000235:genetics; D018745:Genome, Plant / Q000235:genetics; D018551:Solanum lycopersicum / Q000235:genetics* / Q000378:metabolism; D008969:Molecular Sequence Data; D005810:Multigene Family / Q000235:genetics; D010802:Phylogeny; D017386:Sequence Homology, Amino Acid
chemical_list: D017302:Annexins