Arbuscular mycorrhizal fungi reveal distinct patterns of anastomosis formation and hyphal healing mechanisms between different phylogenic groups

The significance of anastomosis formation and the hyphal healing mechanism (HHM) for functionality and integrity of the arbuscular mycorrhizal (AM) fungal mycelial network remains poorly documented. Four Glomeraceae and three Gigasporaceae were cultured monoxenically. Anastomosis formation was asses...

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Veröffentlicht in:The New phytologist. - 1979. - 165(2005), 1 vom: 01. Jan., Seite 261-71
1. Verfasser: de la Providencia, Ivan Enrique (VerfasserIn)
Weitere Verfasser: de Souza, Francisco Adriano, Fernández, Félix, Delmas, Nathalie Séjalon, Declerck, Stéphane
Format: Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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245 1 0 |a Arbuscular mycorrhizal fungi reveal distinct patterns of anastomosis formation and hyphal healing mechanisms between different phylogenic groups 
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520 |a The significance of anastomosis formation and the hyphal healing mechanism (HHM) for functionality and integrity of the arbuscular mycorrhizal (AM) fungal mycelial network remains poorly documented. Four Glomeraceae and three Gigasporaceae were cultured monoxenically. Anastomosis formation was assessed using the grid line method, while HHM was time-lapse monitored. In intact mycelial networks, the number of anastomosis per hyphal length was higher for Glomeraceae than for Gigasporaceae strains. Glomeraceae strains studied always formed anastomosis between different hyphae, whereas anastomosis in the Gigasporaceae more often concerned hyphal bridges within the same hyphae. In both families the HHM corresponded to a four-step process; first septum formation; second initiation of growing hyphal tips (GHTs); third GHT elongation, orientation and contact; and fourth GHT fusion and cytoplasmic/protoplasmic flux re-establishment. These four steps differentiated Glomeraceae from Gigasporaceae. The type and number of anastomosis per hyphal length, and the HHM differed considerably between Glomeraceae and Gigasporaceae families representing a supplementary character that distinguishes these two families and may be of significance in ecological studies of AM fungi 
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650 4 |a Research Support, Non-U.S. Gov't 
700 1 |a de Souza, Francisco Adriano  |e verfasserin  |4 aut 
700 1 |a Fernández, Félix  |e verfasserin  |4 aut 
700 1 |a Delmas, Nathalie Séjalon  |e verfasserin  |4 aut 
700 1 |a Declerck, Stéphane  |e verfasserin  |4 aut 
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