Ridge with no-tillage facilitates microbial N fixation associated with methane oxidation in rice soil.

Aerobic methane-oxidizing bacteria (MOB) play a crucial role in mitigating the greenhouse gas methane emission, particularly prevalent in flooded wetlands. The implementation of ridge with no-tillage practices within a rice-rape rotation system proves effective in overcoming the restrictive redox conditions associated with waterlogging. This approach enhances capillary water availability from furrows, especially during periods of low rainfall, thereby supporting plant growth on the ridges.

Active Methanotrophs in Suboxic Alpine Swamp Soils of the Qinghai-Tibetan Plateau.

Methanotrophs are the only biofilters for reducing the flux of global methane (CH) emissions in water-logged wetlands. However, adaptation of aerobic methanotrophs to low concentrations of oxygen and nitrogen in typical swamps, such as that of the Qinghai-Tibetan Plateau, is poorly understood. In this study, we show that like methanotrophs dominate methane oxidation and nitrogen fixation under suboxic conditions in alpine swamp soils.

Response of a methane-driven interaction network to stressor intensification.

Microorganisms may reciprocally select for specific interacting partners, forming a network with interdependent relationships. The methanotrophic interaction network, comprising methanotrophs and non-methanotrophs, is thought to modulate methane oxidation and give rise to emergent properties beneficial for the methanotrophs. Therefore, microbial interaction may become relevant for community functioning under stress.

Reduction in soil NO emissions by pH manipulation and enhanced nosZ gene transcription under different water regimes.

Several studies have been carried out to examine nitrous oxide (NO) emissions from agricultural soils in the past. However, the emissions of NO particularly during amelioration of acidic soils have been rarely studied. We carried out the present study using a rice-rapeseed rotation soil (pH 5.

[Effects of culture supernatant of human amnion mesenchymal stem cells on biological characteristics of human fibroblasts].

Objective: To investigate the effects of culture supernatant of human amnion mesenchymal stem cells (hAMSCs-CS) on biological characteristics of human fibroblasts.

Methods: (1) hAMSCs were isolated from deprecated human fresh amnion tissue of placenta and then sub-cultured. The morphology of hAMSCs on culture day 3 and hAMSCs of the third passage were observed with inverted phase contrast microscope.

Effects of dicyandiamide and dolomite application on N2O emission from an acidic soil.

Soil acidification is a major problem for sustainable agriculture since it limits productivity of several crops. Liming is usually adopted to ameliorate soil acidity that can trigger soil processes such as nitrification, denitrification, and loss of nitrogen (N) as nitrous oxide (N2O) emissions. The loss of N following liming of acidic soils can be controlled by nitrification inhibitors (such as dicyandiamide).