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    Exceptional nitrogen-resorption efficiency enables Maireana species (Chenopodiaceae) to function as pioneers at a mine-restoration site

    84407.pdf (636.2Kb)
    Access Status
    Open access
    Authors
    Zhong, H.
    Zhou, J.
    Wong, Wei-San
    Cross, Adam
    Lambers, Hans
    Date
    2021
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhong, H. and Zhou, J. and Wong, W.S. and Cross, A. and Lambers, H. 2021. Exceptional nitrogen-resorption efficiency enables Maireana species (Chenopodiaceae) to function as pioneers at a mine-restoration site. Science of the Total Environment. 779: Article No. 146420-.
    Source Title
    Science of the Total Environment
    DOI
    10.1016/j.scitotenv.2021.146420
    ISSN
    0048-9697
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/IC150100041
    http://purl.org/au-research/grants/arc/LP160100598
    URI
    http://hdl.handle.net/20.500.11937/84525
    Collection
    • Curtin Research Publications
    Abstract

    Tailings are among the most challenging mined substrates for plant re-establishment, in particular because of a lack of soil-like structure and nitrogen. Potential pioneer plants are sometimes found in such disturbed and infertile sites. We present a group of pioneer species from the genus Maireana (Chenopodiaceae) that are promising candidates for the restoration of magnetite tailings. We found that these Maireana species did not rely on biologically fixed N from the atmosphere, but exhibited an exceptionally high leaf N-resorption efficiency (about 95%) during leaf senescence, at the same time effectively scavenging trace amount of N from the substrate, in part through rapid transpiration.

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