Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe

Percent germination and length of hyphae of germinated Glomus mosseae spores, cultivated on water agar, decreased significantly in the presence of Aspergillus niger; this decrease was independent of any change in pH of the medium. Soluble and volatile compounds produced by A. niger significantly dec...

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Autores principales: McALLISTER, C.B., GARCIA‐ROMERA, I., MARTIN, J., GODEAS, A., OCAMPO, J.A.
Formato: JOUR
Materias:
Arbuscular mycorrhiza
Aspergillus niger
Glomus mosseae
saprobic fungus
Lactuca sativa
Zea mays
arbuscular mycorrhiza
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0028646X_v129_n2_p309_McALLISTER
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0028646X_v129_n2_p309_McALLISTER
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spelling todo:paper_0028646X_v129_n2_p309_McALLISTER2023-10-03T14:39:07Z Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe McALLISTER, C.B. GARCIA‐ROMERA, I. MARTIN, J. GODEAS, A. OCAMPO, J.A. Arbuscular mycorrhiza Aspergillus niger Glomus mosseae saprobic fungus Aspergillus niger Glomus mosseae Lactuca sativa Zea mays arbuscular mycorrhiza saprobic fungus Percent germination and length of hyphae of germinated Glomus mosseae spores, cultivated on water agar, decreased significantly in the presence of Aspergillus niger; this decrease was independent of any change in pH of the medium. Soluble and volatile compounds produced by A. niger significantly decreased percentage spore germination and the hyphal length of G. mosseae on water agar. The decrease caused by volatile compounds was significantly greater when A. niger was grown on malt extract agar. Shoot dry weights of maize and lettuce plants cultivated in soil in pots, and percentage arbuscular mycorrhizal (AM) root colonization of plants grown either in sand: vermiculite tubes inoculated with G. mosseae spores or in soil in pots with soil inoculum, were unaffected by A. niger when this saprobe was inoculated 2 wk after G. mosseae. Shoot dry weights and percentage AM colonization of plants decreased when the saprobic fungus was inoculated at the same time or 2 wk before G. mosseae. However, the metabolic activity resulting from AM colonization, measured as the percentage of mycelium showing succinate dehydrogenase activity, decreased in all treatments. The population of A. niger decreased when inoculated to the rhizosphere of plants at the same time as, or 2 wk after, G. mosseae, but not when it was inoculated 2 wk before G. mosseae. Our results show that G. mosseae decreases the saprobic fungal population through its effect on the plant, whereas A. niger, by the production of soluble or volatile substances, inhibits G. mosseae in its extramatrical stage. Copyright © 1995, Wiley Blackwell. All rights reserved JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0028646X_v129_n2_p309_McALLISTER
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Arbuscular mycorrhiza
Aspergillus niger
Glomus mosseae
saprobic fungus
Aspergillus niger
Glomus mosseae
Lactuca sativa
Zea mays
arbuscular mycorrhiza
saprobic fungus
spellingShingle Arbuscular mycorrhiza
Aspergillus niger
Glomus mosseae
saprobic fungus
Aspergillus niger
Glomus mosseae
Lactuca sativa
Zea mays
arbuscular mycorrhiza
saprobic fungus
McALLISTER, C.B.
GARCIA‐ROMERA, I.
MARTIN, J.
GODEAS, A.
OCAMPO, J.A.
Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe
topic_facet Arbuscular mycorrhiza
Aspergillus niger
Glomus mosseae
saprobic fungus
Aspergillus niger
Glomus mosseae
Lactuca sativa
Zea mays
arbuscular mycorrhiza
saprobic fungus
description Percent germination and length of hyphae of germinated Glomus mosseae spores, cultivated on water agar, decreased significantly in the presence of Aspergillus niger; this decrease was independent of any change in pH of the medium. Soluble and volatile compounds produced by A. niger significantly decreased percentage spore germination and the hyphal length of G. mosseae on water agar. The decrease caused by volatile compounds was significantly greater when A. niger was grown on malt extract agar. Shoot dry weights of maize and lettuce plants cultivated in soil in pots, and percentage arbuscular mycorrhizal (AM) root colonization of plants grown either in sand: vermiculite tubes inoculated with G. mosseae spores or in soil in pots with soil inoculum, were unaffected by A. niger when this saprobe was inoculated 2 wk after G. mosseae. Shoot dry weights and percentage AM colonization of plants decreased when the saprobic fungus was inoculated at the same time or 2 wk before G. mosseae. However, the metabolic activity resulting from AM colonization, measured as the percentage of mycelium showing succinate dehydrogenase activity, decreased in all treatments. The population of A. niger decreased when inoculated to the rhizosphere of plants at the same time as, or 2 wk after, G. mosseae, but not when it was inoculated 2 wk before G. mosseae. Our results show that G. mosseae decreases the saprobic fungal population through its effect on the plant, whereas A. niger, by the production of soluble or volatile substances, inhibits G. mosseae in its extramatrical stage. Copyright © 1995, Wiley Blackwell. All rights reserved
format JOUR
author McALLISTER, C.B.
GARCIA‐ROMERA, I.
MARTIN, J.
GODEAS, A.
OCAMPO, J.A.
author_facet McALLISTER, C.B.
GARCIA‐ROMERA, I.
MARTIN, J.
GODEAS, A.
OCAMPO, J.A.
author_sort McALLISTER, C.B.
title Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe
title_short Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe
title_full Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe
title_fullStr Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe
title_full_unstemmed Interaction between Aspergillus niger van Tiegh. and Glomus mosseae. (Nicol. & Gerd.) Gerd. & Trappe
title_sort interaction between aspergillus niger van tiegh. and glomus mosseae. (nicol. & gerd.) gerd. & trappe
url http://hdl.handle.net/20.500.12110/paper_0028646X_v129_n2_p309_McALLISTER
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