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Taxonomic position and intraspecific variability of the nodule forming Penicillium nodositatum inferred from RFLP analysis of the ribosomal intergenic spacer and Random Amplified Polymorphic DNA
Penicillium nodositatum induces the formation of nodules on the roots of Alnus . The analysis of RFLPs in the PCR-amplified ITS1-5·8S-ITS2 ribosomal sequence demonstrates that all the nodule-inducingExpand
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The nodular endophytes of Coriaria spp. form a distinct lineage within the genus Frankia
Repeated attempts at isolating the Frankia endophyte of Coriaria spp. have not yielded infective microbial cultures that could fulfil Koch's postulates. In order to circumvent the critical isolationExpand
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Molecular characterization of Frankia microsymbionts from spore-positive and spore-negative nodules in a natural alder stand.
Among the Frankia strains capable of establishing a nitrogen-fixing symbiosis with actinorrhizal plants, in planta sporangial formation is not universal and has led to the distinction betweenExpand
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Molecular phylogeny of Alnus (Betulaceae), inferred from nuclear ribosomal DNA ITS sequences
The nuclear ITS region of 19 species of Alnus was amplified and sequenced. The inferred molecular phylogeny shows that all species of the genus Alnus form a monophyletic group close to Betula andExpand
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Molecular phylogeny of Alnus (Betulaceae), inferred from nuclear ribosomal DNA ITS sequences
The nuclear ITS region of 19 species of Alnus was amplified and sequenced. The inferred molecular phylogeny shows that all species of the genus Alnus form a monophyletic group close to Betula andExpand
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Penicillium nodositatum Valla, a new species inducing myconodules on Alnus roots
Penicillium nodositatum Valla, a new species of Penicillium, able to induce nodule formation on the root system of two alder species, is described in this paper. It belongs to theExpand
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An improved method for lysis of Frankia with acharomopeptidase allows detection of new plasmids
An enzyme recently described for Strepiomyces sp. protoplast formation was used to digest Frankia sp. cell walls. This new enzyme, achromopeptidase, allowed the use of an in situ method to detectExpand
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Estimating N transfers between N2-fixing actinorhizal species and the non-N2-fixing Prunus avium under partially controlled conditions
Two methods of N transfer between plants—by litter decomposition and root-to-root exchange—were examined in mixed plantations of N-fixing and non-fixing trees. Nitrogen transfers from decayingExpand
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Competition for nodulation and 15N2-fixation between a Sp+ and a Sp− Frankia strain in Alnus incana
Abstract The behaviour of a Sp + and a Sp − strain of Frankia for nodulation and N 2 -fixation in Alnus incana with pure and mixed inocula was investigated under greenhouse conditions, using sporeExpand
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Intraspecific variability of isozymes in Penicillium nodositatum Valla, a fungus inducing ‘myconodules’ on the root-system of Alnus sp.
A comparison of mycelial extracts of 17 isolates of Penicillium nodositatum collected from the root system of grey alder (Alnus incana (L.) Moench.) and Italian alder (A. cordata Desf.) grown atExpand
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