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Both plants and soil microorganisms can acquire their nutrients from patchy microsites and alter soil properties by organic litter decomposition and metabolic activities, respectively. Soil microorganisms have diverse, direct effects on plants, e.g., mineralization of organic matter and homogenization of patchy nutrients.
- Soil Organic Matter as Food
- Modification of Habitat
- Disease Suppression
Soil organisms form a complex food web, and soil organic matter is the base of the web. Most soil microorganisms use organic compounds in soil organic matter as carbon and energy sources. Some soil organisms feed directly on living roots, but most depend on dead plant matter . Small insects such as the springtail, a micro-invertebrate, break up pla...
In addition to being a food source, soil organic matter modifies the habitat of soil organisms. Changes in water-holding capacity, porosity, infiltration, hydraulic conductivity and water-stable aggregation that occur with increased soil organic matter have a profound impact on microbial biomass development and its activity . Changes related to soi...
Most soils suppress soil-borne plant pathogens to some degree, including bacterial and fungal pathogens as well as parasitic nematodes. A soil’s ability to suppress pathogens is directly related to its microbial biomass and microbial activities since microbial populations compete with pathogens for nutrients and energy. Disease suppression is often...
Aug 23, 2022 · Healthy soils are linked to good soil structure, optimum nutrients and organic matter levels. Soil microorganisms mediate a wide range of environmental processes and soil ecosystem services ...
Nov 22, 2022 · Alterations in soil structure can have profound impact on the survival and metabolism of soil microorganisms, thereby influencing soil organic matter (SOM) and nutrient turnover, and the ...
Mar 24, 2024 · In the plant-soil underground ecosystem, soil microorganisms mainly establish connections with plants in the following three ways (Van Der Heijden et al., 2008): (1) plant residues, including roots, leaves, and other secretions, are the primary source of soil carbon to supply microbes in the soil (Zhang et al., 2022a); (2) soil microorganisms release nutrients through metabolic activities ...
Soil is a large sink for organic carbon within the terrestrial biosphere. Practices which cause a decline in soil organic matter cause CO 2 release, in addition to damaging soil resilience and, often, agricultural productivity. The soil micro-organisms (collectively the soil microbial biomass) are the agents of transformation of soil organic ...
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Feb 28, 2022 · Soil microorganisms shape global element cycles in life and death. Living soil microorganisms are a major engine of terrestrial biogeochemistry, driving the turnover of soil organic matter ...
