A genome-wide survey of homeodomain-leucine zipper genes and analysis of cold-responsive HD-Zip I members' expression in tomato. Issue 8 (3rd August 2014)

• Record Type: Journal Article
• Authors: Zhang, Zhenzhu; Chen, Xiuling; Guan, Xin; Liu, Yang; Chen, Hongyu; Wang, Tingting; Mouekouba, Liana Dalcantara Ongouya; Li, Jingfu; Wang, Aoxue
• Is Part Of: Bioscience, biotechnology, and biochemistry. Volume 78:Issue 8(2014)
• Page Start: 1337
• Page End: 1349
• Publication Date: 2014-08-03
• Subjects: HD-Zip -- tomato -- duplication -- gene expression -- phylogenetic analysis; Biotechnology -- Periodicals; Biochemistry -- Periodicals; 660.6
• DOI: 10.1080/09168451.2014.923292
• Languages: English
• ISSNs: 0916-8451

Abstract

Abstract: Homeodomain-leucine zipper (HD-Zip) proteins are a kind of transcriptional factors that play a vital role in plant growth and development. However, no detailed information of HD-Zip family in tomato has been reported till now. In this study, 51 HD - Zip genes ( SlHZ01 - 51 ) in this family were identified and categorized into 4 classes by exon–intron and protein structure in tomato ( Solanum lycopersicum ) genome. The synthetical phylogenetic tree of tomato, Arabidopsis and rice HD - Zip genes were established for an insight into their evolutionary relationships and putative functions. The results showed that the contribution of segmental duplication was larger than that of tandem duplication for expansion and evolution of genes in this family of tomato. The expression profile results under abiotic stress suggested that all SlHZ I genes were responsive to cold stress. This study will provide a clue for the further investigation of functional identification and the role of tomato HD-Zip I subfamily in plant cold stress responses and developmental events. Graphical abstract: : Tomato HD-Zip family genes were classified into four groups by their gene structures and the highly homology with Arabidopsis and rice HD-Zip subfamily proteins.