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Open AccessArticle

Genome-Wide Screening and Characterization of the Dof Gene Family in Physic Nut (Jatropha curcas L.)

1
Key Laboratory of Tropical Plant Resource and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming 650223, China
2
Faculty of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2018, 19(6), 1598; https://doi.org/10.3390/ijms19061598
Received: 12 April 2018 / Revised: 19 May 2018 / Accepted: 23 May 2018 / Published: 29 May 2018
(This article belongs to the Special Issue Plant Genomics)
Physic nut (Jatropha curcas L.) is a species of flowering plant with great potential for biofuel production and as an emerging model organism for functional genomic analysis, particularly in the Euphorbiaceae family. DNA binding with one finger (Dof) transcription factors play critical roles in numerous biological processes in plants. Nevertheless, the knowledge about members, and the evolutionary and functional characteristics of the Dof gene family in physic nut is insufficient. Therefore, we performed a genome-wide screening and characterization of the Dof gene family within the physic nut draft genome. In total, 24 JcDof genes (encoding 33 JcDof proteins) were identified. All the JcDof genes were divided into three major groups based on phylogenetic inference, which was further validated by the subsequent gene structure and motif analysis. Genome comparison revealed that segmental duplication may have played crucial roles in the expansion of the JcDof gene family, and gene expansion was mainly subjected to positive selection. The expression profile demonstrated the broad involvement of JcDof genes in response to various abiotic stresses, hormonal treatments and functional divergence. This study provides valuable information for better understanding the evolution of JcDof genes, and lays a foundation for future functional exploration of JcDof genes. View Full-Text
Keywords: Jatropha curcas; Dof gene family; transcription factor; phylogenetic analysis; gene expression analysis Jatropha curcas; Dof gene family; transcription factor; phylogenetic analysis; gene expression analysis
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MDPI and ACS Style

Wang, P.; Li, J.; Gao, X.; Zhang, D.; Li, A.; Liu, C. Genome-Wide Screening and Characterization of the Dof Gene Family in Physic Nut (Jatropha curcas L.). Int. J. Mol. Sci. 2018, 19, 1598.

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