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Microcolonies of bacteria as a nutrient source for lignicolous and other fungi

Author: G L Barron
Edition/Format: Downloadable article Downloadable article : English
Publication:Canadian Journal of Botany, v66 n12 (19881201) 2505-2510
Summary:
Under low nutrient conditions hyphae of certain fungi are strongly attracted to microcolonies of bacteria belonging to the genera Pseudomonas and Agrobacterium. Hyphae of the fungi penetrate the microcolonies and proliferate to produce coral-loid, haustorial-like masses of absorptive hyphae. The bacteria in the colonies are lysed and the contents apparently absorbed as a nutrient source by the fungi. The four fungi  Read more...
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Document Type: Article
All Authors / Contributors: G L Barron
ISSN:0008-4026
Language Note: English
Unique Identifier: 5140404913
Awards:

Abstract:

Under low nutrient conditions hyphae of certain fungi are strongly attracted to microcolonies of bacteria belonging to the genera Pseudomonas and Agrobacterium. Hyphae of the fungi penetrate the microcolonies and proliferate to produce coral-loid, haustorial-like masses of absorptive hyphae. The bacteria in the colonies are lysed and the contents apparently absorbed as a nutrient source by the fungi. The four fungi that demonstrated this capability were Agaricus brunnescens (= A. bisporus), Coprinus quadrifidus, Lepista nuda, and Pleurotus ostreatus. Approximately 100 additional species belonging to the Basidiomycota, Oomycota, Zygomycota, Deuteromycota, or Ascomycota were also tested, but none were found capable of attacking and digesting bacterial colonies in this way. Lorsque l'accès aux nutriments est faible, certains champignons sont fortement attirés vers des microcolonies de bactéries appartenant aux genre Pseudomonas et Agrobacterium. Les hyphes de ces champignons pénètrent les microcolonies et y prolifèrent en produisant des masses d'hyphes absorbants corraloïdes en forme d'haustéries. Les bactéries de ces colonies sont lysées et les contenus sont apparemment absorbés comme source de nourriture pour les champignons. Les quatre espèces de champignon qui ont démontré cette capacité sont Agaricus brunnescens (= A. bisporus), Coprinus quadrifidus, Lepista nuda et Pleurotus ostreatus. Environ une centaine d'autres espèces appartenant aux Basidiomycota, Oomycota, Zygomycota, Deuteromycota ou aux Ascomycota ont également été essayées mais aucune d'entre elles n'a montré la capacité d'attaquer et de digérer les colonies bactériennes de cette façon. [Traduit par la revue]

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    schema:description "Lorsque l'accès aux nutriments est faible, certains champignons sont fortement attirés vers des microcolonies de bactéries appartenant aux genre Pseudomonas et Agrobacterium. Les hyphes de ces champignons pénètrent les microcolonies et y prolifèrent en produisant des masses d'hyphes absorbants corraloïdes en forme d'haustéries. Les bactéries de ces colonies sont lysées et les contenus sont apparemment absorbés comme source de nourriture pour les champignons. Les quatre espèces de champignon qui ont démontré cette capacité sont Agaricus brunnescens (= A. bisporus), Coprinus quadrifidus, Lepista nuda et Pleurotus ostreatus. Environ une centaine d'autres espèces appartenant aux Basidiomycota, Oomycota, Zygomycota, Deuteromycota ou aux Ascomycota ont également été essayées mais aucune d'entre elles n'a montré la capacité d'attaquer et de digérer les colonies bactériennes de cette façon. [Traduit par la revue]" ;
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