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Int. J. Mol. Sci. 2017, 18(8), 1734; doi:10.3390/ijms18081734

Genome-Wide Organization and Expression Profiling of the SBP-Box Gene Family in Chinese Jujube (Ziziphus jujuba Mill.)

1
Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, National Engineering Laboratory for Tree Breeding, Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China
2
National Foundation for Improved Cultivar of Chinese Jujube, Cangzhou 061000, China
*
Author to whom correspondence should be addressed.
Received: 10 July 2017 / Revised: 28 July 2017 / Accepted: 2 August 2017 / Published: 15 August 2017
(This article belongs to the Section Molecular Botany)
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Abstract

Transcription factors play vital roles in the developmental processes of plants. The SQUAMOSA promoter binding protein (SBP) genes encode a family of plant-specific transcription factors and plays many crucial roles in plant development. In this study, 16 SBP-box gene family members were identified in Ziziphus jujuba Mill. Dongzao (Dongzao), which were distributed over 8 chromosomes. They were classified into seven groups according to their phylogenetic relationships with other SBP-box gene families. Within each group, genes shared similar exon-intron structures and motif locations. The number of exons varied among the groups. We identified 12 homologous gene pairs between Dongzao and Arabidopsis. Expression profiling revealed that ZjSBP02 and ZjSBP14 expressed highly in mature fruits, ZjSBP01 expressed higher in mature leaves than other tissues and the expression level of ZjSBP12 was much higher in the flowers. The transcriptome analysis indicated that ZjSBPs had different expression patterns in various tissues. This study represents the first systematic analysis of the SBP-box gene family in Z. jujuba. The data presented here provides a foundation for understanding the crucial roles of ZjSBP genes in plant growth and development. View Full-Text
Keywords: transcription factors; SBP gene family; Ziziphus jujuba Mill.; Dongzao; expression profile transcription factors; SBP gene family; Ziziphus jujuba Mill.; Dongzao; expression profile
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Song, S.; Zhou, H.; Sheng, S.; Cao, M.; Li, Y.; Pang, X. Genome-Wide Organization and Expression Profiling of the SBP-Box Gene Family in Chinese Jujube (Ziziphus jujuba Mill.). Int. J. Mol. Sci. 2017, 18, 1734.

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