Fungal community assembly during a high-temperature composting under different pasteurization regimes used to elaborate the Agaricus bisporus substrate

Vieira, Fabrício Rocha; Pecchia, John

doi:10.1016/j.funbio.2021.05.004

Cited by 8 publications

(2 citation statements)

References 48 publications

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“…Moreover, on the composting of herbal residues, Aspergillus served as the primary fungus throughout the second high-temperature composting phase, which released cellulases and hemicellulases to break down the remaining lignocellulose after the thermophilic stage [ 45 , 46 ]. Besides, previous studies also indicated that Aspergillus and Mycothermus were also frequently found in composting fermentation [ 44 , 47 – 49 ]. Additionally, Mycothermus was dominant throughout the thermophilic stage of dairy manure composting and released hydrolases to take part in destruction of cellulose and hemicellulose [ 50 ].…”

Section: Discussionmentioning

confidence: 97%

Changes of bacterial and fungal communities and relationship between keystone taxon and physicochemical factors during dairy manure ectopic fermentation

Gong

Gao

et al. 2022

PLoS ONE

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Background Due to interactions with variety of environmental and physicochemical factors, the composition and diversity of bacteria and fungi in manure ectopic fermentation are constantly changing. The purpose of this study was to investigated bacterial and fungal changes in dairy manure ectopic fermentation, as well as the relationships between keystone species and physicochemical characteristics. Methods Ectopic fermentation was carried out for 93 days using mattress materials, which was combined with rice husk and rice chaff (6:4, v/v), and dairy waste mixed with manure and sewage. Physicochemical characteristics (moisture content, pH, NH4+-N (NN), total organic carbon (TO), total nitrogen (TN) and the C/N ratio) of ectopic fermentation samples were measured, as well as enzymatic activity (cellulose, urease, dehydrogenase and alkaline phosphatase). Furthermore, the bacterial and fungal communities were studied using 16S rRNA and 18S rRNA gene sequencing, as well as network properties and keystone species were analyzed. Results During the ectopic fermentation, the main pathogenic bacteria reduced while fecal coliform increased. The C/N ratio gradually decreased, whereas cellulase and dehydrogenase remained at lower levels beyond day 65, indicating fermentation maturity and stability. During fermentation, the dominant phyla were Chloroflexi, Firmicutes, Proteobacteria, Bacteroidetes, and Actinobacteria of bacteria, and Ascomycota of fungi, while bacterial and fungal community diversity changed dramatically and inversely. The association between physicochemical characteristics and community keystone taxon was examined, and C/N ratio was negative associated to keystone genus. Conclusion These data indicated that microbial composition and diversity interacted with fermentation environment and parameters, while regulation of keystone species management of physicochemical factors might lead to improved maturation rate and quality during dairy manure ectopic fermentation. These findings provide a reference to enhance the quality and efficiency of waste management on dairy farm.

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Section: Discussionmentioning

confidence: 97%

Changes of bacterial and fungal communities and relationship between keystone taxon and physicochemical factors during dairy manure ectopic fermentation

Gong

Gao

et al. 2022

PLoS ONE

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“…Previously accumulated insect pests and pathogens, coupled with the high temperature and humidity conditions, reduce the immunity of mushrooms, rendering them susceptible to pathogenic fungi and resulting in serious decay. The main reasons for analyzing the prevalence of rot disease were as follows: (1) the amount of pathogenic fungal inocula accumulates over time; as the first crop accumulates many pests and diseases, the second crop is prone to a large outbreak [55,56]; (2) high temperatures and humidity are conducive to disease development [46]; (3) the soil in the study regions is sticky and heavy, poorly aerated, and prone to waterlogging, favoring disease development [57]; (4) fungi in soil and compost can cause a range of diseases in P. rubrovolvatus due to soil community imbalance, and P. rubrovolvatus mycelium can act as a substrate for these fungi [58]; and (5) ants, flies, mites and snails, among other carriers, harbor Trichoderma spores, acting as vectors for pathogen transmission [59,60]. The climate in Guizhou Province is warm and humid, with abundant rainfall, and the major cultivation areas of P. rubrovolvatus mostly constitute deciduous forests.…”

Section: Discussionmentioning

confidence: 99%

Regulation of Intracellular Reactive Oxygen Species Levels after the Development of Phallus rubrovolvatus Rot Disease Due to Trichoderma koningii Mycoparasitism

Wen

Guo³

et al. 2023

JoF

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Phallus rubrovolvatus is a unique mushroom used for medicinal and dietary purposes in China. In recent years, however, the rot disease of P. rubrovolvatus has seriously affected its yield and quality, becoming an economically important threat. In this study, samples of symptomatic tissues were collected, isolated, and identified from five major P. rubrovolvatus production regions in Guizhou Province, China. Based on combined analyses of phylogenies (ITS and EF1-α), morphological characteristics and Koch’s postulates, Trichoderma koningiopsis and Trichoderma koningii were identified as the pathogenic fungal species. Among these, T. koningii exhibited stronger pathogenicity than the other strains; thus, T. koningii was used as the test strain in the follow-up experiments. Upon co-culturing T. koningii with P. rubrovolvatus, the hyphae of the two species were intertwined, and the color of the P. rubrovolvatus hyphae changed from white to red. Moreover, T. koningii hyphae were wrapped around P. rubrovolvatus hyphae, leading to their shortening and convolution and ultimately inhibiting their growth due to wrinkling; T. koningii penetrated the entire basidiocarp tissue of P. rubrovolvatus, causing serious damage to the host basidiocarp cells. Further analyses revealed that T. koningii infection resulted in the swelling of basidiocarps and significantly enhanced the activity of defense-related enzymes, such as malondialdehyde, manganese peroxidase, and polyphenol oxidase. These findings offer theoretical support for further research on the infection mechanisms of pathogenic fungi and the prevention of diseases caused by them.

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Mushroom Metagenome: Tool to Unravel Interaction Network of Plant, Mycorrhiza, and Bacteria

Vishal

Tigga²,

Hembrom³

et al. 2023

Rhizosphere Biology

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Fungal community assembly during a high-temperature composting under different pasteurization regimes used to elaborate the Agaricus bisporus substrate

Cited by 8 publications

References 48 publications

Changes of bacterial and fungal communities and relationship between keystone taxon and physicochemical factors during dairy manure ectopic fermentation

Changes of bacterial and fungal communities and relationship between keystone taxon and physicochemical factors during dairy manure ectopic fermentation

Regulation of Intracellular Reactive Oxygen Species Levels after the Development of Phallus rubrovolvatus Rot Disease Due to Trichoderma koningii Mycoparasitism

Mushroom Metagenome: Tool to Unravel Interaction Network of Plant, Mycorrhiza, and Bacteria

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