Abstract
The AP2/ERF family transcription factors (TFs) act as the nodes of a regulatory network in a plant's response to abiotic and biotic stress. AP2-like genes from apple (Malus × domestica Borkh), one of the most widely cultivated fruit trees worldwide, were identified and analysed in order to understand the transcriptional regulation through the AP2/ERF family TFs. Starting from the M. domestica database, 58 AP2-like TFs were identified by in silico cloning using the AP2/ERF TFs amino acid sequence of Arabidopsis thaliana as a probe. The AP2/ERF TFs from apple were classified into four subfamilies, DREB, ERF, AP2 and RAV. To establish detailed expression data of this gene family in apple, six kinds of tissue (bud, flower, fruit, leaf, root and stem) and cell culture were examined for the presence of AP2-like genes. Most of the apple AP2-like genes indicate some degree of tissue specificity and were most abundant in root followed by stem, and expression levels were low in leaf and in bud.
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Acknowledgements
The research was supported by the International Scientific and Technological Cooperation of Canada–China (Shanghai–Alberta); Hi-tech Research and Development Program of China (2006AA10Z117); National key Project of Transgenic Crops of China (2009ZX08002-011B); Shanghai Rising-Star Program and Natural Science Foundation (08QH14021, 08ZR1417200).
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Supplementary Table S1
The apple AP2/ERF family member expression profiles suggested by analysis of EST counts based UniGene (Transcripts per millon (TPM). (/: means the cDNA Sources from mixed whole plant) (DOC 97 kb)
Supplementary Figure S1
Comparison of deduced amino acid sequences of the AP2 DNA-binding domains of the AP2 subfamily proteins from A. thaliana and M. domestica. The black background represents conserved amino acid residues in each group. (DOC 134 kb)
Supplementary Figure S2
Comparison of deduced amino acid sequences of the AP2 and B3 DNA-binding domains of the RAV subfamily proteins from A. thaliana and M. domestica. The black background represents conserved amino acid residues in each group. (DOC 104 kb)
Supplementary Figure S3
The classification of AP2/ERF family factors among A. thaliana, O. sativa, V. vinifera and M. domestica. The size of each piece is proportional to the relative abundance to the AP2/ERF genes assigned to this group. (DOC 371 kb)
Supplementary Figure S4
The deduced amino acid sequence alignment of the AP2/ERF DNA-binding domain of ERF subfamily proteins from apple in this study and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 348 kb)
Supplementary Figure S5
The deduced amino acid sequences alignment of the AP2/ERF DNA-binding domain of DREB subfamily proteins from apple in this study and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 309 kb)
Supplementary Figure S6
Comparison of full length of deduced amino acid sequences of the ERF-B1 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 106 kb)
Supplementary Figure S7
Comparison of full length of deduced amino acid sequences of the ERF-B2 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 62 kb)
Supplementary Figure S8
Comparison of full length of deduced amino acid sequences of the ERF-B3 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 114 kb)
Supplementary Figure S9
Comparison of full length of deduced amino acid sequences of the ERF-B4 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 62 kb)
Supplementary Figure S10
Comparison of full length of deduced amino acid sequences of the ERF-B5 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 56 kb)
Supplementary Figure S11
Comparison of full length of deduced amino acid sequences of the ERF-B6 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 110 kb)
Supplementary Figure S12
Comparison of full length of deduced amino acid sequences of the DREB-A1 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 42 kb)
Supplementary Figure S13
Comparison of full length of deduced amino acid sequences of the DREB-A4 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 89 kb)
Supplementary Figure S14
Comparison of full length of deduced amino acid sequences of the DREB-A5 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 69 kb)
Supplementary Figure S15
Comparison of full length of deduced amino acid sequences of the DREB-A6 group proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 77 kb)
Supplementary Figure S16
Comparison of full length of deduced amino acid sequences of the RAV subfamily proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 49 kb)
Supplementary Figure S17
Comparison of full length of deduced amino acid sequences of the AP2 subfamily proteins from apple and Arabidopsis. The black background represents conserved amino acid residues in each group. (DOC 114 kb)
Supplementary Figure S18
Tissue-specific expression of the apple DREB subfamily genes. (DOC 27 kb)
Supplementary Figure S19
Tissue-specific expression of the apple AP2 and RAV subfamily genes. (DOC 27 kb)
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Zhuang, J., Yao, QH., Xiong, AS. et al. Isolation, Phylogeny and Expression Patterns of AP2-Like Genes in Apple (Malus × domestica Borkh). Plant Mol Biol Rep 29, 209–216 (2011). https://doi.org/10.1007/s11105-010-0227-8
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DOI: https://doi.org/10.1007/s11105-010-0227-8