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DNA cloning and screening of a partial genomic library from an arbuscular mycorrhizal fungus, Scutellospora castanea



DNA cloning and screening of a partial genomic library from an arbuscular mycorrhizal fungus, Scutellospora castanea



Mycorrhiza 4(6): 251-254



A technique has been developed to efficiently extract purified, restrictable genomic DNA from spores of different arbuscular mycorrhizal fungi in order to begin detailed investigations of the genome of the Glomales. The protocol yielded variable amounts of DNA depending on the fungal species; for Scutellospora castanea and Gigaspora rosea it reached values of 1.5-2 ng/spore. EcoRI digests of DNA from S. castanea were cloned into pUC18 and about 1000 recombinant DNA clones were obtained. Of those screened, 50 contained inserts of 500-7000 bp. Selected inserts detected DNA sequences from S. castanea spores or roots infected by this fungus, but not from nonmycorrhizal roots. This is the first report of a partial genomic library from an arbuscular mycorrhizal fungus.

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Accession: 002337749

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DOI: 10.1007/bf00206773


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