Genome-wide identification and analysis of the SBP-box family genes in apple (Malus x domestica Borkh.)
Genome-wide identification and analysis of the SBP-box family genes in apple (Malus x domestica Borkh.)
复制标题
苹果 (Malus x Domestica Borkh.) 中 SBP-box 家族基因的全基因组鉴定和分析
DOI：
10.1016/j.plaphy.2013.05.021
复制
发表时间：
2013-09-01
影响因子：
6.5
通讯作者：
Wang, Xiping
中科院分区：
文献类型：
--
作者：
Li, Jun;Hou, Hongmin;Wang, Xiping
SQUAMOSA promoter binding protein (SBP)-box genes encode a family of plant-specific transcription factors and play many crucial roles in plant development. In this study, 27 SBP-box gene family members were identified in the apple (Malus x domestica Borkh.) genome, 15 of which were suggested to be putative targets of MdmiR156. Plant SBPs were classified into eight groups according to the phylogenetic analysis of SBP-domain proteins. Gene structure, gene chromosomal location and synteny analyses of MdSBP genes within the apple genome demonstrated that tandem and segmental duplications, as well as whole genome duplications, have likely contributed to the expansion and evolution of the SBP-box gene family in apple. Additionally, synteny analysis between apple and Arabidopsis indicated that several paired homologs of MdSBP and AtSPL genes were located in syntenic genomic regions. Tissue-specific expression analysis of MdSBP genes in apple demonstrated their diversified spatiotemporal expression patterns. Most MdmiR156-targeted MdSBP genes, which had relatively high transcript levels in stems, leaves, apical buds and some floral organs, exhibited a more differential expression pattern than most MdmiR156-nontargeted MdSBP genes. Finally, expression analysis of MdSBP genes in leaves upon various plant hormone treatments showed that many MdSBP genes were responsive to different plant hormones, indicating that MdSBP genes may be involved in responses to hormone signaling during stress or in apple development. (c) 2013 Elsevier Masson SAS. All rights reserved.
