Characterization of AtbZIP2, AtbZIP11 and AtbZIP53 from the group S basic region-leucine zipper family in Arabidopsis thaliana

Shin Lee Sung, Hwan Yang Seung, Thomas Berberich, Atsushi Miyazaki, Tomonobu Kusano

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    We have previously described the lip19 subfamily of basic region-leucine zipper protein (bZIP)-encoding genes from plants. Phylogenetic analysis of bZIP-encoded genes of Arabidopsis thaliana revealed that AtbZIP53 belongs to the lip19 subfamily and that four other members, AtbZIP1, AtbZIP2, AtbZIP11 and AtbZIP44 have close relationships to this subfamily. Here, we further characterized AtbZIP53 and two additional bZIP genes, AtbZIP2 and AtbZIP11. All three gene products are localized to the nucleus and show strong DNA binding activity to hexamer and C/G box hybrid sequences. Transactivation activities of the proteins were examined in plant cells. The expression of the genes upon exposure to various abiotic stresses and to hormone treatments was examined in Arabidopsis. We found that AtbZIP11 and AtbZIP53 were responsive to cytokinin and high salt stress, respectively. Based on these data, the physiological roles are discussed.

    Original languageEnglish
    Pages (from-to)249-258
    Number of pages10
    JournalPlant Biotechnology
    Volume23
    Issue number3
    DOIs
    Publication statusPublished - 2006

    Keywords

    • Abiotic stress
    • Arabidopsis thaliana
    • Plant hormone
    • Salt stress
    • bZIP gene

    ASJC Scopus subject areas

    • Biotechnology
    • Agronomy and Crop Science
    • Plant Science

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