Arbuscular mycorrhizal fungi: a specialised niche for rhizospheric and endocellular bacteria |
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Authors: | Bianciotto Valeria Bonfante Paola |
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Affiliation: | (1) Dipartimento di Biologia Vegetale & Centro Studio sulla Micologia del Terreno del CNR, Viale Mattioli 25, 10125 Torino, Italy |
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Abstract: | Arbuscular mycorrhizal (AM) fungi produce an extensive hyphal network which develops in the soil, producing a specialised niche for bacteria. The aim of this paper is to review briefly the interactions shown by these symbiotic fungi with two bacterial groups: (i) the plant-growth promoting rhizobacteria (PGPRs) which are usually associated with fungal surfaces in the rhizosphere, and (ii) a group of endocellular bacteria, previously identified as being related to Burkholderia on the basis of their ribosomal sequence strains. The endobacteria have been found in the cytoplasm of some isolates of AM fungi belonging to Gigasporaceae and offer a rare example of bacteria living in symbiosis with fungi. This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | cell surface molecules endobacteria mycorrhizal fungi nif operon rhizosphere ribosomal genes plant-growth promoting rhizobacteria |
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