title: Genome-Wide Identification and Analysis of the Type-B Authentic Response Regulator Gene Family in Peach (Prunus persica).
abstract: The type-B authentic response regulator (ARR-B) family members serve as DNA-binding transcriptional regulators, whose activities are probably regulated by phosphorylation/dephosphorylation, resulting in the rapid induction of type-A ARR genes. Type-B ARRs are believed to be involved in many biological processes, including cytokinin signaling, plant growth, and stress responses through a chaperone or by isomerization of proline residues during protein folding. The public availability of complete peach genome sequences allows the identification of 23 ARR-B genes by HMMER and blast analysis. Scaffold locations of these genes in the peach genome were determined, and the protein domain and motif organization of peach type-B ARRs were analyzed. The phylogenetic relationships between peach type-B ARRs were also assessed. The expression profiles of peach ARR-B genes revealed that most of the type-B ARRs showed high expression levels in tissues undergoing rapid cell division and may engage more cytokinins, like half-opened flowers, fruits at expansion stages, and young leaves. These findings not only contribute to a better understanding of the complex regulation of the peach ARR-B gene family, but also provide valuable information for future research in peach functional genomics.
authors.affiliation: College of Horticulture, Nanjing Agricultural University, Nanjing, PR China.
authors.forename: Jingjue
authors.initials: J
authors.lastname: Zeng
authors.forename: Xudong
authors.initials: X
authors.lastname: Zhu
authors.forename: Muhammad S
authors.initials: MS
authors.lastname: Haider
authors.forename: Xicheng
authors.initials: X
authors.lastname: Wang
authors.forename: Cheng
authors.initials: C
authors.lastname: Zhang
authors.forename: Chen
authors.initials: C
authors.lastname: Wang
mesh_terms: D002874:Chromosome Mapping; D032461:Chromosomes, Plant / Q000235:genetics; D020869:Gene Expression Profiling / Q000379:methods; D018506:Gene Expression Regulation, Plant; D018745:Genome, Plant / Q000235:genetics*; D005810:Multigene Family; D010802:Phylogeny; D010940:Plant Proteins / Q000145:classification / Q000235:genetics* / Q000378:metabolism; D000068239:Prunus persica / Q000235:genetics* / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction; D014157:Transcription Factors / Q000145:classification / Q000235:genetics* / Q000378:metabolism
chemical_list: D010940:Plant Proteins; D014157:Transcription Factors