Hyphal and mycelial interactions betweenAgaricus bisporus andScytalidium thermophilum on agar media

Camp, Huub J. M. Op den; Stumm, Claudius K.; Straatsma, G.; Derikx, P.J.L.; Griensven, L. J. L. D. van

doi:10.1007/bf02017174

Cited by 15 publications

(3 citation statements)

References 11 publications

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“…This effort to isolate microorganisms in culture and subsequently identify by morphology, and more recently by molecular analyses, has been investigated to look for a relationship with A. bisporus growth and/or yield [11][12][13][14][15][16][17]. The majority of these reports [11][12][13][14][15] focused on thermophilic bacteria and fungi such as Scytalidium, Torula, Chaetomium, Humicola, Mucor, Penicillium, Aspergillus, Monilia, Fusarium, Epicoccum, Trichoderma, Nocardia, Pseudonocardia, Streptomyces, Thermoactinomyces, Thermomonospora, Talaromyces, and Stibella, which are typically cultured in the laboratory (culture-dependent methods). More recently [16,17], a fingerprint and library clones sequencing methods was used to reveal the presence of certain bacterial orders during composting for A. bisporus cultivation such as Bacillales, Xanthomonadales, Clostridiales, Pseudomonadales, Themales, Halanaerobiales, Thermoanaerobacteriales, Actinomycetales, and Acidimicrobiales.…”

Section: Introductionmentioning

confidence: 99%

An Exploration into the Bacterial Community under Different Pasteurization Conditions during Substrate Preparation (Composting–Phase II) for Agaricus bisporus Cultivation

Vieira

Pecchia

2017

Microb Ecol

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Substrate preparation (i.e., composting) for Agaricus bisporus cultivation is the most critical point of mushroom production. Among many factors involved in the composting process, the microbial ecology of the system is the underlying drive of composting and can be influenced by composting management techniques. Pasteurization temperature at the beginning of phase II, in theory, may influence the bacterial community and subsequently the "selectivity" and nutrition of the final substrate. Therefore, this hypothesis was tested by simulation in bioreactors under different pasteurization conditions (57 °C/6 h, 60 °C/2 h, and 68 °C/2 h), simulating conditions adopted by many producers. Bacterial diversity, based on 16S ribosomal RNA obtained by high-throughput sequencing and classified in operational taxonomic units (OTUs), was greater than previously reported using culture-dependent methods. Alpha diversity estimators show a lower diversity of OTUs under a high-temperature pasteurization condition. Bacillales order shows a relatively higher OTU abundance under a high-pasteurization temperature, which also was related to high ammonia emission measurements. On the other hand, beta diversity analysis showed no significantly changes in the bacterial community structure under different conditions. Agaricus bisporus mycelium growth during a standard spawn run period was significantly slower in the compost pasteurized at high temperature. Since the bacterial community structure was not greatly affected by different pasteurization conditions but by-products left (e.g., ammonia) at the end of compost conditioning varied, further studies need to be conducted to determine the functional role of the microbial communities found during substrate preparation for Agaricus bisporus cultivation.

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Section: Introductionmentioning

confidence: 99%

An Exploration into the Bacterial Community under Different Pasteurization Conditions during Substrate Preparation (Composting–Phase II) for Agaricus bisporus Cultivation

Vieira

Pecchia

2017

Microb Ecol

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“…Integrated associations among different species occur in all environments. One member of such an association can promote the growth rate of the other (11,(16)(17)(18). There are examples of relationships among various species allowing one of them to tolerate adverse exposure to high temperature (1,3,4,6,9).…”

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Association of Bacteria and Yeasts in Hot Springs

Rikhvanov

Varakina

Sozinov

et al. 1999

Appl Environ Microbiol

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“…Op den Camp et al (1990) indicated that the presence of M. thermophilus is important for the colonization of the substrate by A. bisporus. However, during this study, it was not possible to isolate this micromycete or other thermophilic fungi reported with similar characteristics that stimulate the growth of A. bisporus at the levels previously reported (Straatsma et al, 1991;Sánchez et al, 2008).…”

Section: Effect On the Growth Of Agaricus Bisporusmentioning

confidence: 99%

Growth-promoting thermophilic microorganisms in self-heating pasteurized substrate improve Agaricus bisporus mycelial growth

2019

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Background: Certain microorganisms during the preparation of substrate for growing Agaricus bisporus are of great interest for the conversion of organic material and for the excretion of a wide range of metabolites with growth regulation activities that may affect the mycelial growth processes and mushroom yield. Adding beneficial microorganisms in the substrate may be a biotechnological alternative to optimize A. bisporus cultivation. Objective: Isolate and evaluate thermophilic microorganisms from self-heating pasteurized substrate with growth-promoting effects on A. bisporus cultivation. Methods: Different microorganisms were isolated and selected at 45 and 55 °C. They were tested for siderophore production, 1-octen-3-ol consumption, and phosphate solubilization in coculture with A. bisporus to determine their growth effects on potato dextrose agar (PDA) and on sterile pangola grass (Digitaria eriantha). Results: Of the 106 microorganisms isolated, 88 % were able to grow in the presence of 1-octen-3-ol, while 1 % had the capacity to produce siderophores, and 55 % had the ability to solubilize phosphate. The strains Bacillus hisashii ECS-B-65, B. licheniformis ECS-B-78, Rhizomucor pusillus ECS-710 and ECS-712, Aspergillus fumigatus ECS-709, and Thermomyces sp. ECS-711 were found to have a positive effect on A. bisporus mycelial growth.

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Hyphal and mycelial interactions betweenAgaricus bisporus andScytalidium thermophilum on agar media

Cited by 15 publications

References 11 publications

An Exploration into the Bacterial Community under Different Pasteurization Conditions during Substrate Preparation (Composting–Phase II) for Agaricus bisporus Cultivation

An Exploration into the Bacterial Community under Different Pasteurization Conditions during Substrate Preparation (Composting–Phase II) for Agaricus bisporus Cultivation

Association of Bacteria and Yeasts in Hot Springs

Growth-promoting thermophilic microorganisms in self-heating pasteurized substrate improve Agaricus bisporus mycelial growth

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