<i>Parascedosporium</i> and its relatives: phylogeny and ecological trends

Lackner, Michaela; Hoog, G. Sybren de

doi:10.5598/1imafungus.2011.02.01.07

Cited by 15 publications

(17 citation statements)

References 16 publications

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“…Graphium spp. isolated in a past study were from wood or forest soil and had a consistent association with wood infested by bark insects (Lackner & de Hoog, 2011). Therefore, Graphium, being a plant pathogen for some species, could be part of the natural flora in the sawdust.…”

Section: Discussionmentioning

confidence: 97%

Dynamics of fungal and bacterial microbiome associated with green-mould contaminated sawdust substrate of Pleurotus pulmonarius (grey oyster mushroom)

Ponnusamy

Ajis

Tan

et al. 2022

Journal of Applied Microbiology

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Aims: Green-mould contamination is identified as one of the challenges faced by mushroom cultivation industry globally which believed to be caused by Trichoderma spp. Methods and Results:To explore the dynamics of microbial population in mushroom substrate during commercial mushroom cultivation and how microbiota might play a role in green-mould contamination, we applied both culturing and targeted metagenomics approaches to identify microbiota in noncomposted sawdust substrates at different cultivation stages. The microbiological analysis showed that the green-mould contaminated substrates harboured higher total mesophilic bacteria count. The green-moulds isolated from the contaminated mushroom substrates were identified as Trichoderma pleurotum (n = 15; 93.8%) and Graphium penicillioides (n = 1; 6.3%). To our surprise, the targeted metagenomic analysis revealed that Graphium comprised 56.3% while Trichoderma consisted of only 36.1% of the total fungi population, suggesting that green-mould contamination might not be caused by Trichoderma alone, but also Graphium that grows very slowly in the laboratory. Conclusion:It is worthwhile to note that G. penicillioides was also isolated in the early stages of mushroom cultivation, but not T. pleurotum. The results indicated that the structure and composition of the bacterial population in the mushroom substrate varied and the bacterial population shifted along the cultivation process. Significance and Impact of Study:This study revealed a possibility of G. penicillioides as an overlooked fungi causing green-mould contamination.

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Section: Discussionmentioning

confidence: 97%

Dynamics of fungal and bacterial microbiome associated with green-mould contaminated sawdust substrate of Pleurotus pulmonarius (grey oyster mushroom)

Ponnusamy

Ajis

Tan

et al. 2022

Journal of Applied Microbiology

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“…Microascaceae currently accommodate a morphologically heterogeneous group of fungi, comprising saprophytic and plant pathogenic species (Sandoval-Denis et al, 2016b). Fungal members of the Microascaceae family inhabit niches in association with different kinds of bark beetles, Petriella and Petriellopsis are associated with soil, dung and compost (Lackner and de Hoog, 2011). We hypothesise that the toxicity of isothiocyanates associated with Brassicaceous plants may suppress this fungal family in the oilseed radish rhizosphere.…”

Section: Discussionmentioning

confidence: 99%

Pinpointing the distinctive impacts of ten cover crop species on the resident and active fractions of the soil microbiome

Cazzaniga

Braat

Elsen

et al. 2022

Preprint

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Cover crops are used in agriculture to minimise soil erosion, prevent nutrient leaching and increase soil organic matter content. Cover crops can also be grown to stimulate the soil microbial community to improve soil biological conditions. Despite their widespread use, little is known about the impact of different cover crop species on the composition and activity of the soil microbiome. Here we investigate the effect of distinct cover crop species on the rhizosphere microbiome and to characterise both the resident (DNA-based) and the active (RNA-based) fractions of the bacterial, fungal, protist and metazoan communities in the cover crops rhizosphere. We conducted a field experiment using 70-litre bottomless containers in which we grew ten monocultures of commonly used cover crop species belonging to five plant families, and an unplanted control treatment (fallow). The total DNA and RNA were extracted from soil and the bacterial, fungal, protistan and metazoan communities were characterized using Illumina MiSeq sequencing. We found that all cover crop species significantly impacted the resident and active microbial community composition. Moreover, cover crops showed distinct selection strengths on their rhizospheres. Together with borage (Boraginaceae), oilseed radish (Brassicaceae) was shown to provoke the strongest microbial shifts, in part attributable to a promotion of the bacterial family Pseudomonadaceae and a repression of Microascaceae in the rhizosphere. Lentil (Fabaceae) showed enrichment in fungal taxa, including Trichocomaceae and fungal members of the Glomerales order, whereas black oat, hybrid ryegrass (both Poaceae) and marigold (Asteraceae) induced relatively mild changes in the soil microbial communities. Predominantly, differences in selection strengths were consistent among the four organismal groups under investigation and were observed in both the active and resident communities. Our work provides a broad baseline for the effects of cover crops on four organismal groups, which may facilitate future cover crop selection to advance soil health.

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“…Some can occur at the extreme of their host ranges. Graphium basitruncatum has been isolated from wood and soil, even in the Solomon Islands and Japan, and from a leukemic patient [ 140 , 141 ]. Scytalidium lignicola and Sporothrix are recognized as saprotrophic opportunists of which the lifestyle can change from plant to human or animal pathogenicity.…”

Section: Discussionmentioning

confidence: 99%

Mycobiota Associated with the Vascular Wilt of Poplar

Kwaśna

Szewczyk

Baranowska

et al. 2021

Plants

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In 2017, a 560-ha area of hybrid poplar plantation in northern Poland showed symptoms of tree decline. The leaves appeared smaller, yellow-brown, and were shed prematurely. Twigs and smaller branches died without distinct cankers. Trunks decayed from the base. The phloem and xylem showed brown necrosis. Ten percent of the trees died 1–2 months after the first appearance of the symptoms. None of these symptoms were typical for known poplar diseases. The trees’ mycobiota were analysed using Illumina sequencing. A total of 69 467 and 70 218 operational taxonomic units (OTUs) were obtained from the soil and wood. Blastocladiomycota and Chytridiomycota occurred only in the soil, with very low frequencies (0.005% and 0.008%). Two taxa of Glomeromycota, with frequencies of 0.001%, occurred in the wood. In the soil and wood, the frequencies of Zygomycota were 3.631% and 0.006%, the frequencies of Ascomycota were 45.299% and 68.697%, and the frequencies of Basidiomycota were 4.119% and 2.076%. At least 400 taxa of fungi were present. The identifiable Zygomycota, Ascomycota, and Basidiomycota were represented by at least 18, 263 and 81 taxa, respectively. Many fungi were common to the soil and wood, but 160 taxa occurred only in soil and 73 occurred only in wood. The root pathogens included species of Oomycota. The vascular and parenchymal pathogens included species of Ascomycota and of Basidiomycota. The initial endophytic character of the fungi is emphasized. Soil, and possibly planting material, may be the sources of the pathogen inoculum, and climate warming is likely to be a predisposing factor. A water deficit may increase the trees’ susceptibility. The epidemiology of poplar vascular wilt reminds grapevine trunk diseases (GTD), including esca, black foot disease and Petri disease.

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Parascedosporium and its relatives: phylogeny and ecological trends

Cited by 15 publications

References 16 publications

Dynamics of fungal and bacterial microbiome associated with green-mould contaminated sawdust substrate of Pleurotus pulmonarius (grey oyster mushroom)

Dynamics of fungal and bacterial microbiome associated with green-mould contaminated sawdust substrate of Pleurotus pulmonarius (grey oyster mushroom)

Pinpointing the distinctive impacts of ten cover crop species on the resident and active fractions of the soil microbiome

Mycobiota Associated with the Vascular Wilt of Poplar

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