Identification of laccase‐like genes in ectomycorrhizal basidiomycetes and transcriptional regulation by nitrogen in <i>Piloderma byssinum</i>

Chen, David M.; Bastias, Brigitte A.; Taylor, Andrew; Cairney, John

doi:10.1046/j.1469-8137.2003.00687.x

Cited by 63 publications

(44 citation statements)

References 40 publications

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“…Multiple laccase-like genes were also identified in Piloderma spp. (3). Whether there is any functional connection between Piloderma sp.…”

Section: Discussionmentioning

confidence: 99%

Tricholoma matsutake Dominates Diverse Microbial Communities in Different Forest Soils

Vaario¹,

Fritze²,

Spetz³

et al. 2011

Appl Environ Microbiol

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Fungal and actinobacterial communities were analyzed together with soil chemistry and enzyme activities in order to profile the microbial diversity associated with the economically important mushroom Tricholoma matsutake. Samples of mycelium-soil aggregation (shiro) were collected from three experimental sites where sporocarps naturally formed. PCR was used to confirm the presence and absence of matsutake in soil samples. PCR-denaturing gradient gel electrophoresis (DGGE) fingerprinting and direct sequencing were used to identify fungi and actinobacteria in the mineral and organic soil layers separately. Soil enzyme activities and hemicellulotic carbohydrates were analyzed in a productive experimental site. Soil chemistry was investigated in both organic and mineral soil layers at all three experimental sites. Matsutake dominated in the shiro but also coexisted with a high diversity of fungi and actinobacteria. Tomentollopsis sp. in the organic layer above the shiro and Piloderma sp. in the shiro correlated positively with the presence of T. matsutake in all experimental sites. A Thermomonosporaceae bacterium and Nocardia sp. correlated positively with the presence of T. matsutake, and Streptomyces sp. was a common cohabitant in the shiro, although these operational taxonomic units (OTUs) did not occur at all sites. Significantly higher enzyme activity levels were detected in shiro soil. These enzymes are involved in the mobilization of carbon from organic matter decomposition. Matsutake was not associated with a particular soil chemistry compared to that of nearby sites where the fungus does not occur. The presence of a significant hemicellulose pool and the enzymes to degrade it indicates the potential for obtaining carbon from the soil rather than tree roots.

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“…Multiple laccase-like genes were also identified in Piloderma spp. (3). Whether there is any functional connection between Piloderma sp.…”

Section: Discussionmentioning

confidence: 99%

Tricholoma matsutake Dominates Diverse Microbial Communities in Different Forest Soils

Vaario¹,

Fritze²,

Spetz³

et al. 2011

Appl Environ Microbiol

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“…Enzymes with the potential to break phenol-protein complexes (Bending and Read 1996;Joanisse et al 2009;Wu et al 2003) are largely the same as those involved in lignin degradation, namely phenoloxidases and peroxidases. While laccase genes were demonstrated in several ECM (Chen et al 2003;Luis et al 2005), there is only limited evidence for the presence in ECM of other lignolytic enzymes, e.g. lignin peroxidase or manganese peroxidase (Baldrian 2006;Cairney et al 2003).…”

Section: Enzymes Of Ecms Possibly Involved In Utilising Organic Boundmentioning

confidence: 99%

Enzyme secretion by ECM fungi and exploitation of mineral nutrients from soil organic matter

Pritsch

Garbaye

2011

Annals of Forest Science

101

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Abstract· Introduction Important nutrients in forest soils such as nitrogen and phosphorus are mostly recycled from natural polymeric compounds contained in litter and organic debrisfor example nucleic acids, proteins, or chitin.· Objectives Activities of enzymes such as phosphatases, proteases, cellulases, chitinases and laccase were shown in saprotrophic but also in ectomycorrhizal fungi and there is increasing evidence that these enzymes contribute not only to the functioning of the symbiosis but also to the mobilisation of nutrients. In the present review, we describe how enzyme secretion and localisation on fungal hyphae may be connected to the potential role in soil nutrient cycling. · ResultsRecently developed methods for enzyme activity studies of ectomycorrhizae directly assayed in or collected from the field such as enzyme activity profiling and soil imprinting are described. Their value and limitations in different examples of ecological studies is highlighted and discussed also with respect to the role of other soil microorganisms associated with ectomycorrhizae. · ConclusionThe conclusion from our review is that enzyme activities of ECM and their associated microorganisms provide a potentially enormous plasticity of mycorrhizosphere functionality which is an open field for further research. Enzymes secrétés par les champignons ectomycorhiziens et exploitation des éléments minéraux contenus dans la matière organique du sol.

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“…Supplementation and incubation conditions were affected the enzymatic activity. Some WRF like Volvariella volvacea gave good laccase activity under high nitrogen condition and medium was supplemented with Cu but in the absence of Cu activity was not found and under low nitrogen condition laccase activity was very poor [25]. Laccase is particularly widespread in ligninolytic basidiomycetes (Phanerochaete, Trametes, Pycnoporus, Nematoloma, Sporotrichum, Ganoderma lucidum, Stropharia etc.)…”

Section: Laccasementioning

confidence: 99%

Extracellular Ligninolytic Enzymes in Bjerkandera adusta and Lentinus squarrosulus

Tripathi¹,

Upadhyay²,

Singh

2011

Indian J Microbiol

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Extracellular ligninolytic enzyme activities were determined in two white-rot fungi, Bjerkandera adusta and Lentinus squarrosulus. To investigate the activity of extracellular enzymes, cultures were incubated over a period of 20 days in nutrient rich medium (NRM) and nutrient poor medium under static and shaking conditions. Enzymatic activity was varied with media and their incubation conditions. The highest level of Aryl alcohol oxidase (AAO) was detected under shaking condition of both medium while Manganese peroxidase (MnP) activity was best in NRM under both conditions. AAO is the main oxidases enzyme in B. adusta while laccase plays important role in L. squarrosulus. MnP is the main peroxidase enzyme in both varieties.

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Identification of laccase‐like genes in ectomycorrhizal basidiomycetes and transcriptional regulation by nitrogen in Piloderma byssinum

Cited by 63 publications

References 40 publications

Tricholoma matsutake Dominates Diverse Microbial Communities in Different Forest Soils

Tricholoma matsutake Dominates Diverse Microbial Communities in Different Forest Soils

Enzyme secretion by ECM fungi and exploitation of mineral nutrients from soil organic matter

Extracellular Ligninolytic Enzymes in Bjerkandera adusta and Lentinus squarrosulus

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