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Isolation of two novel promoters from ramie (Boehmeria nivea L. Gaudich) and its functional characterization in Arabidopsis thaliana

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Abstract

The development of tissue-specific or inducible promoters is important for plant genetic engineering. In this study, we isolated two novel promoters (named BnGDSpro and BnSTMpro) from ramie and analyzed their functions in Arabidopsis. The results show that BnGDSpro and its 5′-truncated fragments drive GUS dominantly expressed in shoot meristem while BnSTMpro and its 5′-truncated fragments have apical meristem specificity in Arabidopsis seedlings and nodule specificity in the flowers and siliques. The − 1233 to − 914 region and − 425 to 0 region of BnSTMpro are responsible for apical root specificity and root-knot specificity, respectively. In particular, CuSO4 treatment reveals that both BnGDSpro and BnSTMpro are copper-inducible promoters. Our findings suggest that BnGDSpro and BnSTMpro and their truncated fragments have potential applications in plant genetic transformation.

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Acknowledgements

This study was supported by National Natural Science Foundation of China (31671736).

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Contributions

DP and PG designed the research project. PG performed the research and wrote the paper. PG and YZ performed Arabidopsis genetic transformation and GUS fluorometric assays. PG and JC isolated the regions of the two promoters. PG and EF provided experimental materials for RNA extraction. BW and LL revised manuscript.

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Correspondence to Dingxiang Peng.

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The authors declare that they have no conflict of interest.

Additional information

Communicated by Sergio Rosales-Mendoza.

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Guo, P., Zheng, Y., Chen, J. et al. Isolation of two novel promoters from ramie (Boehmeria nivea L. Gaudich) and its functional characterization in Arabidopsis thaliana. Plant Cell Tiss Organ Cult 136, 467–478 (2019). https://doi.org/10.1007/s11240-018-01528-9

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  • DOI: https://doi.org/10.1007/s11240-018-01528-9

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