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    Isotropic growth of spores and salt tolerance in Aspergillus nidulans

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    Authors
    O'Mahony, Roy J.
    Burns, Alan T. H.
    Millam, Steve
    Hooley, Paul
    Fincham, Daron A.
    Issue Date
    2002
    
    Metadata
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    Abstract
    We report an investigation into the relationship between Aspergillus nidulans mutations sltA1 and agaA50 conferring salt sensitivity and arginase deficiency, respectively, and the ability of spores to swell and commence germination. Spores from both mutant strains exhibited uncontrolled swelling at pH 5.5 in the presence of arginine as the nitrogen source. The controlled swelling of spores from a salt tolerant strain under these conditions was disrupted by the Na+/H+ exchange inhibitor amiloride. Swelling in the presence of amiloride was associated with an elevation in the concentration of arginine within the spores of each strain tested. The possible consequences of alterations in the arginine economy of the spore for colony establishment in osmotically challenged habitats are discussed.
    Citation
    Mycological Research, 106(12): 1480-1486
    Publisher
    Elsevier Science Direct
    Journal
    Mycological Research
    URI
    http://hdl.handle.net/2436/22174
    DOI
    10.1017/S0953756202006949
    Additional Links
    http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B7XMR-4RS503B-H&_user=1644469&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000054077&_version=1&_urlVersion=0&_userid=1644469&md5=2e0b4b38dd650371d958f31e75186d76
    Type
    Journal article
    Language
    en
    ISSN
    09537562
    14698102
    ae974a485f413a2113503eed53cd6c53
    10.1017/S0953756202006949
    Scopus Count
    Collections
    Research Institute in Healthcare Science

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