Grazing Effects of Soil Fauna on White-Rot Fungi: Biomass, Enzyme Production and Litter Decomposition Ability

Soil invertebrates and microorganisms are two major drivers of litter decomposition. Even though the importance of invertebrates and microorganisms in biogeochemical soil cycles and soil food webs has been studied, the effects of invertebrates on fungi are not well understood compared to other organ...

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Bibliographic Details
Published in:Journal of fungi (Basel) 2022-03, Vol.8 (4), p.348
Main Authors: Chen, Yunru, Cao, Tingting, Lv, Meiqi, Fang, You, Liu, Run, Luo, Yunchao, Xu, Chi, Tian, Xingjun
Format: Article
Language:English
Subjects:
Biogeochemical cycles
Biomass
Cellulose
Decomposition
Enzymatic activity
Enzymes
extracellular enzyme
Food webs
fungal biomass
Fungi
Grazing
Lignin
Litter
microcosm experiment
Microorganisms
Soil fauna
Soil invertebrates
Soil microorganisms
Terrestrial ecosystems
Water conservation
White rot
white-rot fungi
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Summary:Soil invertebrates and microorganisms are two major drivers of litter decomposition. Even though the importance of invertebrates and microorganisms in biogeochemical soil cycles and soil food webs has been studied, the effects of invertebrates on fungi are not well understood compared to other organisms. In this work, we investigated the effects of soil invertebrates on fungi as a factor that cannot be ignored in the study of nutrient cycling. The result showed the grazing of isopods on white-rot fungi was transitive and persistent. The grazed fungi appeared "compensatory" growing. The biomass of fungi increased after grazing. The activities of enzymes associated with nutrient cycling were increased under grazing. The zymography images showed the enzyme hotspots and activities also increased significantly in the grazing area. The results suggest that invertebrate grazing can significantly increase the fungal biomass and enzyme activity, accelerating litter decomposition in the unreached grazer area. The grazing effects of invertebrate plays an important role in promoting the nutrient cycling of the forest ecosystem. We believe that this study will be a good reference related to showing the relationship between soil invertebrates, fungi and soil biogeochemical cycles.
ISSN:2309-608X
2309-608X
DOI:10.3390/jof8040348