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Bulletin of Botanical Research ›› 2018, Vol. 38 ›› Issue (6): 931-938.doi: 10.7525/j.issn.1673-5102.2018.06.017

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Bioinformatic and Expression Analysis of HD-Zip Family Gene in Betula platyphylla

WANG Jia-Qi, ZHANG Xi, LI Li   

  1. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040
  • Received:2018-06-19 Online:2018-11-15 Published:2018-11-01
  • Supported by:
    National Natural Science Foundation of China(31470676)

Abstract: Homeodomain-leucine zipper (HD-Zip) proteins are ubiquitous in plants and participate in various aspects of plant growth and developmental processes as well as environmental responses. Using birch genome database, we acquired 35 putative HD-Zip genes. These genes were classified into four subfamilies, Ⅰ to Ⅳ, based on phylogenetic analysis. The additional conserved domains, protein structures, chromosome distribution and physiological functions of these members were further predicted and analyzed. To gain more insights into the roles of birch HD-Zip genes in salinity tolerance, we identified seven genes which were highly induced by salt stress using transcriptomic data. This study provides a solid foundation for uncovering the biological roles of HD-Zip genes in salt response from Betula platyphylla.

Key words: Betula platyphylla Suk., HD-Zip, gene family, bioinformatic analysis

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