Room Temperature Isolations Can Bias against Selection of Low Temperature Microfungi in Temperate Forest Soils

Carreiro, Margaret M.; Koske, R. E.

doi:10.2307/3760287

Cited by 27 publications

(10 citation statements)

References 37 publications

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“…The plastic mulch increases soil microbial biomass and associated enzymatic activity in other studies (Liu et al, 2014b; Wang et al, 2014). In addition, increased soil temperature can induce a shift in the microbial community composition toward one that functions efficiently in terms of N transformation within the soil (Richards et al, 1985; Carreiro and Koske, 1992; Zogg et al, 1997; Cookson et al, 2007). Therefore, the increased microbial activity and possibly a shift in the microbial community composition in the mulched soils would have accelerated N release from N‐contained organic substrates compared with the non‐mulched soils.…”

Section: Soil Nitrogen Mineralizationmentioning

confidence: 99%

Plastic Mulch Stimulates Nitrogen Mineralization in Urea‐Amended Soils in a Semiarid Environment

Long

Liu

et al. 2015

Agronomy Journal

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Soil N mineralization is critical for designing appropriate N management strategies, though it has been seldom studied in plasticmulched croplands. We evaluated plastic mulch e ect on N mineralization in urea-amended furrow-ridge plots with and without maize (Zea mays L.) planting at a semiarid rain-fed site, China. Clear lm covered all soil surfaces in the mulched treatments and maize was seeded in furrows in the cropped treatments. Mulch increased daytime soil temperature in the 0 to 15 cm throughout the season without maize but only in the seedling and elongation stages with maize, compared with no mulch. Mulch increased soil moisture in the whole season without maize but only in the early growth with maize, compared with no mulch in 2011. However, the mulch in uence on soil moisture was independent on the presence of maize in 2012. Compared with non-mulched soils, N mineralization rate increased in mulched soils throughout the season in 2011 and 2012. By harvest, in 2011 total N mineralized averaged 112 kg ha -1 in mulched soils, contrasting to 54 kg N ha -1 immobilized in non-mulched soils; in 2012 total N mineralization was 348 kg ha -1 in mulched soils whereas it was 116 kg ha -1 in non-mulched soils. Maize increased N mineralization in the tasseling and silking stages compared with no maize. However, the mulch e ect on N mineralization rate was independent on the presence of maize. We concluded that plastic mulch increased N mineralization in urea-amended soils by increasing soil temperature and moisture.

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Section: Soil Nitrogen Mineralizationmentioning

confidence: 99%

Plastic Mulch Stimulates Nitrogen Mineralization in Urea‐Amended Soils in a Semiarid Environment

Long

Liu

et al. 2015

Agronomy Journal

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“…Research 935 increase of adequate water-permeable channels in the membrane. In boreal but also many temperate forest ecosystems, soil temperature (below 10 cm depth where ectomycorrhizas are frequently found) rarely exceeds 16°C with a frequent average between 5 and 10°C (Carreiro & Koske, 1992;Davidson et al, 1998;Davies-Colley et al, 2000). Low soil temperatures together with a large water flux from the fungus towards the plant and vice versa, driven by plant respiration and the nocturnal hydraulic lift, respectively, can explain the necessity of aquaporin function in ECM fungi.…”

Section: New Phytologistmentioning

confidence: 99%

The aquaporin gene family of the ectomycorrhizal fungus Laccaria bicolor: lessons for symbiotic functions

et al. 2011

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Summary• Soil humidity and bulk water transport are essential for nutrient mobilization. Ectomycorrhizal fungi, bridging soil and fine roots of woody plants, are capable of modulating both by being integrated into water movement driven by plant transpiration and the nocturnal hydraulic lift.• Aquaporins are integral membrane proteins that function as gradient-driven water and ⁄ or solute channels. Seven aquaporins were identified in the genome of the ectomycorrhizal basidiomycete Laccaria bicolor and their role in fungal transfer processes was analyzed.• Heterologous expression in Xenopus laevis oocytes revealed relevant water permeabilities for three aquaporins. In fungal mycelia, expression of the corresponding genes was high compared with other members of the gene family, indicating the significance of the respective proteins for plasma membrane water permeability.• As growth temperature and ectomycorrhiza formation modified gene expression profiles of these water-conducting aquaporins, specific roles in those aspects of fungal physiology are suggested. Two aquaporins, which were highly expressed in ectomycorrhizas, conferred plasma membrane ammonia permeability in yeast. This indicates that these proteins are an integral part of ectomycorrhizal fungusbased plant nitrogen nutrition in symbiosis.

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“…Thus, it seems that the particle-washing technique should be combined with other methods such as the soil plate method (48) or the soil crumb or sprinkle plate methods (3,47) for a more complete estimate of the diversity of saprophytic basidiomycetes. Isolations made at temperatures other than room temperature (e.g., 5 and 37ЊC) may also increase the diversity of fungi isolated (11). Isolations made at 5ЊC have been used to obtain basidiomycetes from litter in Finland (28).…”

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confidence: 99%

Isolation of saprophytic basidiomycetes from soil

Thorn¹,

Reddy²,

Harris³

et al. 1996

Appl Environ Microbiol

117

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A method with the combined advantages of soil particle washing, selective inhibitors, and an indicator substrate was developed to isolate saprophytic basidiomycetes from soil. Organic particles were washed from soil and plated on a medium containing lignin, guaiacol, and benomyl, which reduced mold growth and allowed detection of basidiomycetes producing laccase or peroxidase. The 64 soil samples yielded 67 basidiomycete isolates, representing 51 groups on the basis of morphology and physiology. This method should facilitate investigations into the biodiversity of soil basidiomycetes and yield organisms that are useful in bioremediation of soils contaminated with pesticides or other recalcitrant aromatic compounds.

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Room Temperature Isolations Can Bias against Selection of Low Temperature Microfungi in Temperate Forest Soils

Cited by 27 publications

References 37 publications

Plastic Mulch Stimulates Nitrogen Mineralization in Urea‐Amended Soils in a Semiarid Environment

Plastic Mulch Stimulates Nitrogen Mineralization in Urea‐Amended Soils in a Semiarid Environment

The aquaporin gene family of the ectomycorrhizal fungus Laccaria bicolor: lessons for symbiotic functions

Isolation of saprophytic basidiomycetes from soil

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