| Identification of MYB gene family in Ziziphus jujuba and expression analysis in response to drought stress |
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| DOI：10.7606/j.issn.1000-7601.2025.06.07 |
| Key Words: Ziziphus jujuba MYB gene family drought stress bioinformatic analysis expression analysis |
| Author Name | Affiliation | | DING Xubin | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China | | MA Yaping | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China | | LIU Jingyuan | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China | | SHAN Lei | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China | | LI Sulong | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China | | SONG Lihua | School of Forestry and Grassland Science, Ningxia University, Yinchuan, Ningxia 750021, China
State Key Laboratory of Efficient Production of Forest Resources, Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| Ziziphus jujuba has excellent drought resistance, and MYB transcription factors play an important role in plant response to drought stress. In order to investigate the drought\|resistant mechanism of MYB transcription factors in Z.jujuba var. spinosa, the MYB gene family of Z.jujuba var. spinose was identified and analyzed by bioinformatics methods. Combined with the transcriptome data under drought stress, the key genes in response to drought stress were screened to provide a basis for the cultivation of drought\|resistant and high\|quality Z.jujube varieties. The results showed that 62 MYB gene family members were identified in the whole genome of Z.jujuba var. spinosa, distributed on 12 chromosomes, and all of them contained the conserved Motif2 structural domain, which was mainly located in the cytoplasm, nucleus, and chloroplasts. The MYB members of Z.jujuba var. spinosa, Z.jujuba cv. ‘Dongzao’, and Z.jujuba cv. ‘Junzao’ were classified into seven subgroups. A total of 4 361 pairs of syntenic gene pairs were identified in the whole genome of Z.jujuba var. spinosa, among which 4 pairs of syntenic gene pairs were found in MYB family members.There were 6 and 10 pairs of collinearity genes in the MYB gene family of Z.jujuba var. spinosa, Z.jujuba cv. ‘Junzao’, and Z.jujuba cv. ‘Dongzao’, respectively. In the promoter region of the MYB gene family of Z.jujuba var. spinosa, 41 types of cis\|acting elements related to light response, environmental stress, hormone response, etc. were identified, including abscisic acid\|responsive element ABRE in response to drought stress and MYB\|binding site element MBS. In the expression pattern of drought stress, the MYB members ZjsMYB14, ZjsMYB21, ZjsMYB26, ZjsMYB43, ZjsMYB51, and ZjsMYB53 were significantly expressed in different developmental periods of jujube, which might be the key drought\|resistant genes. |
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