Abscisic acid is involved in the response of Arabidopsis mutant sad2-1 to ultraviolet-B radiation by enhancing antioxidant enzymes

M. Chen, W. H. Zhang, Z. W. Lv, S. L. Zhang, J. Hidema, F. M. Shi, L. L. Liu

    Research output: Contribution to journalArticlepeer-review

    23 Citations (Scopus)

    Abstract

    In this study, we examined the physiological mechanisms in the responses of Arabidopsis mutant sensitive to ABA and drought 2-1 (sad2-1) to ultraviolet-B radiation (UVB) treatments. The effects of enhanced UVB radiation on plant growth, concentration of UV-absorbing compounds, photosynthesis, endogenous ABA and antioxidant system were investigated in two types of Arabidopsis thaliana - the mutant sad2-1 and the wild type (WT, C24). Results indicated that, under UVB radiation, mutant sad2-1 showed a higher resistance than C24 through accumulating more UV absorption materials, maintaining bio-membrane balance and photosynthesis efficiency, enhancing endogenous ABA content and activating ROS scavenging enzymes. It can be postulated that ABA might participate in a complex signal crosstalk in increasing the tolerance of UVB.

    Original languageEnglish
    Pages (from-to)79-86
    Number of pages8
    JournalSouth African Journal of Botany
    Volume85
    DOIs
    Publication statusPublished - 2013 Mar

    Keywords

    • ABA
    • Antioxidant enzymes
    • Mutant sad2-1
    • UVB

    ASJC Scopus subject areas

    • Plant Science

    Fingerprint Dive into the research topics of 'Abscisic acid is involved in the response of Arabidopsis mutant sad2-1 to ultraviolet-B radiation by enhancing antioxidant enzymes'. Together they form a unique fingerprint.

    Cite this