Functional, regulatory and indicator features of microorganisms in man-made ecosystems

Сомова, Л. М.; Pechurkin, N.S.

doi:10.1016/s0273-1177(01)00247-2

Cited by 14 publications

(9 citation statements)

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“…Fertilizer inputs, planting diversity, and tillage practices affect soil community structure and function in different ways ( Mbuthia et al, 2015 ; Álvarez-Martín et al, 2016 ). Soil tillage regulates soil microbial community structure and diversity mainly by affecting soil physicochemical characteristics and microbial habitat ( Somova and Pechurkin, 2001 ; Helgason et al, 2009 ). Fertilizer regulates soil microbial diversity, activity, quantity, and community structure to alter soil nutrient transformation and ultimately soil nutrient effectiveness ( Cui et al, 2018 ; Ikoyi et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Long-term integrated soil-crop management improves soil microbial community structure to reduce GHG emission and increase yield

Liu²,

Ren³

et al. 2022

Front. Microbiol.

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Integrated soil-crop management (ISCM) has been shown as an effective strategy to increase efficiency and yield while its soil microbial community structure and function remain unclear. We evaluated changes in soil physicochemical factors, bacterial community structure responses, and the contributions of soil properties and bacterial communities to summer maize-winter wheat yield and GHG emissions through an ISCM experiment [T1 (local smallholder farmers practice system), T2 (improved management system), T3 (high–yield production system), and T4 (optimized management system)], which could provide scientific guidance for sustainable development of soil in summer maize-winter wheat rotation system. The results showed that the optimized ISCM could improve the soil quality, which significantly changed the soil bacterial community structure to reduce GHG emissions and increase yield. The co-occurrence network density of T3 was increased significantly. The Acidobacteria (class) and OM190 (class) were enriched in T2 and T4. The Frankiales (order) and Gaiellales (order) were enriched in T3. However, the changes in different crop growth stages were different. At the wheat jointing stage and maize mature stage, T4 could enhance carbon-related functional groups, such as aromatic hydrocarbon degradation and hydrocarbon degradation, to increase the soil organic carbon content. And at the maize tasseling stage, T4 could enhance nitrogen-related functional groups. And soil bacteria structure and function indirectly affected annual yield and GHG emission. T2 and T4 exhibited a similar soil microbial community. However, the yield and nitrogen use efficiency of T2 were reduced compared to those of T4. The yield of T3 was the highest, but the GHG emission increased and soil pH and nitrogen use efficiency decreased significantly. Therefore, T4 was a suitable management system to improve soil quality and soil bacterial community structure and function to decrease GHG emissions and increase the yield of the summer maize-winter wheat rotation system.

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Section: Introductionmentioning

confidence: 99%

Long-term integrated soil-crop management improves soil microbial community structure to reduce GHG emission and increase yield

Liu²,

Ren³

et al. 2022

Front. Microbiol.

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“…Furthermore, different types of microorganism response differently to these stress (Zelles 1999;Houghton et al 2001;Panikwv 1999;Johnson et al 2003a, b). So content of microbial biomass carbon is a sensitivity and early warning indicator for soil ecosystem degradation (Nielsen et al 2002;Kennedy and Smith 1995;Somova and Pechurkin 2001). Microbial biomass carbon comprises only about 1-4 % of soil organic carbon, which is a big recharge source and reserve of soil available nutrient (Jenkinson and Powlson 1981) and plays an important role in maintaining and improving soil structure.…”

Section: Introductionmentioning

confidence: 99%

Effects of drought stress on agriculture soil

et al. 2014

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Droughts often affect the soil ecosystem directly. To address this question, a series of prototype observation experiments were designed in this study. The objective of this study was to identify changing tendencies of microbial biomass carbon content and the proportion of microbial biomass carbon in soil organic carbon under different drought conditions. All the soil samples were collected from experiments fields about 10 cm far away from the rhizosphere of the maize, and the content of microbial biomass carbon was selected as indicator for identifying effects of extreme drought on agriculture soil ecosystem. The results showed that the optimum mass water content of soil for microbial biomass carbon was 19.5 % and the demarcation point of microbial biomass carbon to drought was 14.3 %, which could be used to demonstrate alters and degradation of soil ecosystem and the irrigation requirement of crops. Meanwhile, sustainability of different drought soil ecosystems was also evaluated after rainstorm with rehabilitation. The results suggested that soil ecosystem could recover after interfered by moderate drought, and its tolerance to drought, as well as its function and activity was improved. Soil system could not adapt to severe drought stress, could barely recover and restore from extreme drought within a few days, and its function and structure were also damaged. From this view, we could conclude that mass water content of soil should be kept above 10 % to avoid soil system function and structure being destroyed. Nevertheless, these findings suggested that

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“…In the current study, none of the native species tested were capable of removing CO2 under the light levels used, in fact, all species increased the total CO2 concentration in the test chambers. This was due to respiration by the microorganisms located within the substrate (Somova and Pechurkin, 2001;Torpy et al 2016). As all plants were exposed to natural sunlight conditions prior to the experiment commencement and also during the experiment when not being tested on it is not likely that the plants experience photo-inhibition from low light levels and this can not be attributed to the plants inability to reduce CO2 concentrations.…”

Section: Australian Native Plant Species Co2 Removal Efficiencymentioning

confidence: 99%

Active botanical biofiltration of air pollutants using Australian native plants

Paull

Irga

Torpy

2019

Air Qual Atmos Health

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Air pollutants are of public concern due to their adverse health effects. Biological air filters have shown great promise for the bioremediation of air pollutants. Different plant species have previously been shown to significantly influence pollutant removal capacities, although the number of species tested to date is small. The aim of this paper was to determine the pollutant removal capacity of different Australian native species for their effect on active biowall particulate matter, volatile organic compounds and carbon dioxide removal, and to compare removal rates with previously tested ornamental species. The single pass removal efficiency for PM and VOCs of native planted biofilters was determined with a flow through chamber. CO2 removal was tested by a static chamber pull down study. The results indicated that the native species were not effective for CO2 removal likely due to their high light level requirements in conjunction to substrate respiration. Additionally, the native species had lower PM removal efficiencies compared to ornamental species, with this potentially being due to the ornamental species possessing advantageous leaf traits for increased PM accumulation. Lastly, the native species were found to have similar benzene removal efficiencies to ornamental species. As such, whilst the native species showed a capacity to phytoremediate air pollutants, ornamental species have a comparatively greater capacity to do so and are more appropriate for air filtration purposes in indoor circumstances. However, as Australian native plants have structural and metabolic adaptations that enhance their ability to tolerate harsh environments, they may find use in botanical biofilters in situations where common ornamental plants may be suitable, especially in the outdoor environment.

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Functional, regulatory and indicator features of microorganisms in man-made ecosystems

Cited by 14 publications

References 1 publication

Long-term integrated soil-crop management improves soil microbial community structure to reduce GHG emission and increase yield

Long-term integrated soil-crop management improves soil microbial community structure to reduce GHG emission and increase yield

Effects of drought stress on agriculture soil

Active botanical biofiltration of air pollutants using Australian native plants

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