Abstract
Three ericoid mycorrhizal fungi were grown in pure culture under iron deprivation: (i) the ascomyceteHymenoscyphus ericae, a characteristic endophyte of ericaceous plants on acid soils; (ii) the hyphomyceteOidiodendron griseum, an ericoid mycorrhizal fungus which is also a soil-borne fungus able to colonize wood; and (iii) an endophyte of the calciculous ericaceous plantRhodothamnus chamaecistus. All three fungi produced several hydroxamate siderophores which were isolated in the ferric form by adsorption to Amberlite XAD-2, gel chromatography on Sephadex LH20 and by HPLC on a C18 reversed-phase column. Siderophores were identified by (i) co-chromatography with known fungal siderophores, (ii) ion spray mass spectrometry after semi-preparative HPLC and (iii) analyzing their electrophoretic behavior. WhileH. ericae andO. griseum were similar in producing ferricrocin as their principal siderophore, the endophyte ofR. chamaecistus produced mainly fusigen.
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Haselwandter, K., Dobernigg, B., Beck, W. et al. Isolation and identification of hydroxamate siderophores of ericoid mycorrhizal fungi. Biometals 5, 51–56 (1992). https://doi.org/10.1007/BF01079698
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DOI: https://doi.org/10.1007/BF01079698