Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts
The interface between plants and pathogens plays an important role in their interaction. Studies of fungal cell walls are scarce and previous results show the existence of α-1,3-glucans in addition to ß-glucans. In addition, α-1,3-glucans are not present in plant cell walls, and α-glucanase activity...
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2007
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09537562_v111_n8_p976_Wolski http://hdl.handle.net/20.500.12110/paper_09537562_v111_n8_p976_Wolski |
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paper:paper_09537562_v111_n8_p976_Wolski2023-06-08T15:55:25Z Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts Daleo, Gustavo Raúl Immunoelectron microscopy Non-pathogenic binucleate Plant-fungus interactions Solanum tuberosum Ultrastructure 1,3 alpha glucan alpha-1,3-glucan glucan glycosidase unclassified drug biological control cytology enzyme activity fungus plant defense potato secretion article biological pest control cell wall chemistry enzymology growth, development and aging Hyphomycetes immunoelectron microscopy isolation and purification metabolism potato transmission electron microscopy ultrastructure Cell Wall Glucans Glycoside Hydrolases Microscopy, Electron, Transmission Microscopy, Immunoelectron Pest Control, Biological Rhizoctonia Solanum tuberosum Fungi Hyphomycetes Rhizoctonia Solanum tuberosum The interface between plants and pathogens plays an important role in their interaction. Studies of fungal cell walls are scarce and previous results show the existence of α-1,3-glucans in addition to ß-glucans. In addition, α-1,3-glucans are not present in plant cell walls, and α-glucanase activity in plants has not been described before. In a previous work, we purified and characterized an α-1,3-glucan from a binucleated, non-pathogenic Rhizoctonia isolate, which induces plant defence responses. Therefore, in order to study the architecture of the fungal cell wall, and the accessibility and localization of the α-glucan elicitor, we prepared an antibody against the α-1,3-glucan and analysed its localization by TEM. Immunolocalization showed the presence of the α-1,3-glucan in the intercellular spaces and along the cell walls, mainly on the inner layers. This result, and the presence of the α-1,3-glucan in the liquid culture medium in which binucleated non-pathogenic Rhizoctonia was grown, confirmed that the α-glucan had been secreted. The α-1,3-glucan was also immunocytolocalized on potato sprouts tissue elicited with the glucan; gold particles were observed in vacuoles and close to the plasmalemma. In addition, α-glucanase activity in potato sprouts was detected using cell wall glucans from the pathogenic isolate R. solani AG-3 as substrates; whereas, when cell wall glucans from non-pathogenic isolates were used, no α-glucanase activity was detected. Our results suggest that the presence of α-1,3-glucans could be associated with the formation and integrity of the cell wall and also with plant-fungi interactions. This is the first report to describe α-glucanolytic activity in plants. © 2007 The British Mycological Society. Fil:Daleo, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09537562_v111_n8_p976_Wolski http://hdl.handle.net/20.500.12110/paper_09537562_v111_n8_p976_Wolski |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Immunoelectron microscopy Non-pathogenic binucleate Plant-fungus interactions Solanum tuberosum Ultrastructure 1,3 alpha glucan alpha-1,3-glucan glucan glycosidase unclassified drug biological control cytology enzyme activity fungus plant defense potato secretion article biological pest control cell wall chemistry enzymology growth, development and aging Hyphomycetes immunoelectron microscopy isolation and purification metabolism potato transmission electron microscopy ultrastructure Cell Wall Glucans Glycoside Hydrolases Microscopy, Electron, Transmission Microscopy, Immunoelectron Pest Control, Biological Rhizoctonia Solanum tuberosum Fungi Hyphomycetes Rhizoctonia Solanum tuberosum |
| spellingShingle |
Immunoelectron microscopy Non-pathogenic binucleate Plant-fungus interactions Solanum tuberosum Ultrastructure 1,3 alpha glucan alpha-1,3-glucan glucan glycosidase unclassified drug biological control cytology enzyme activity fungus plant defense potato secretion article biological pest control cell wall chemistry enzymology growth, development and aging Hyphomycetes immunoelectron microscopy isolation and purification metabolism potato transmission electron microscopy ultrastructure Cell Wall Glucans Glycoside Hydrolases Microscopy, Electron, Transmission Microscopy, Immunoelectron Pest Control, Biological Rhizoctonia Solanum tuberosum Fungi Hyphomycetes Rhizoctonia Solanum tuberosum Daleo, Gustavo Raúl Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| topic_facet |
Immunoelectron microscopy Non-pathogenic binucleate Plant-fungus interactions Solanum tuberosum Ultrastructure 1,3 alpha glucan alpha-1,3-glucan glucan glycosidase unclassified drug biological control cytology enzyme activity fungus plant defense potato secretion article biological pest control cell wall chemistry enzymology growth, development and aging Hyphomycetes immunoelectron microscopy isolation and purification metabolism potato transmission electron microscopy ultrastructure Cell Wall Glucans Glycoside Hydrolases Microscopy, Electron, Transmission Microscopy, Immunoelectron Pest Control, Biological Rhizoctonia Solanum tuberosum Fungi Hyphomycetes Rhizoctonia Solanum tuberosum |
| description |
The interface between plants and pathogens plays an important role in their interaction. Studies of fungal cell walls are scarce and previous results show the existence of α-1,3-glucans in addition to ß-glucans. In addition, α-1,3-glucans are not present in plant cell walls, and α-glucanase activity in plants has not been described before. In a previous work, we purified and characterized an α-1,3-glucan from a binucleated, non-pathogenic Rhizoctonia isolate, which induces plant defence responses. Therefore, in order to study the architecture of the fungal cell wall, and the accessibility and localization of the α-glucan elicitor, we prepared an antibody against the α-1,3-glucan and analysed its localization by TEM. Immunolocalization showed the presence of the α-1,3-glucan in the intercellular spaces and along the cell walls, mainly on the inner layers. This result, and the presence of the α-1,3-glucan in the liquid culture medium in which binucleated non-pathogenic Rhizoctonia was grown, confirmed that the α-glucan had been secreted. The α-1,3-glucan was also immunocytolocalized on potato sprouts tissue elicited with the glucan; gold particles were observed in vacuoles and close to the plasmalemma. In addition, α-glucanase activity in potato sprouts was detected using cell wall glucans from the pathogenic isolate R. solani AG-3 as substrates; whereas, when cell wall glucans from non-pathogenic isolates were used, no α-glucanase activity was detected. Our results suggest that the presence of α-1,3-glucans could be associated with the formation and integrity of the cell wall and also with plant-fungi interactions. This is the first report to describe α-glucanolytic activity in plants. © 2007 The British Mycological Society. |
| author |
Daleo, Gustavo Raúl |
| author_facet |
Daleo, Gustavo Raúl |
| author_sort |
Daleo, Gustavo Raúl |
| title |
Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| title_short |
Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| title_full |
Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| title_fullStr |
Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| title_full_unstemmed |
Cell wall α-1,3-glucans from a biocontrol isolate of Rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| title_sort |
cell wall α-1,3-glucans from a biocontrol isolate of rhizoctonia: immunocytolocalization and relationship with α-glucanase activity from potato sprouts |
| publishDate |
2007 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09537562_v111_n8_p976_Wolski http://hdl.handle.net/20.500.12110/paper_09537562_v111_n8_p976_Wolski |
| work_keys_str_mv |
AT daleogustavoraul cellwalla13glucansfromabiocontrolisolateofrhizoctoniaimmunocytolocalizationandrelationshipwithaglucanaseactivityfrompotatosprouts |
| _version_ |
1768546593372372992 |