Warming Shapes and -Type Denitrifier Communities and Stimulates NO Emission in Acidic Paddy Soil.

Warming strongly stimulates soil nitrous oxide (NO) emission, contributing to the global warming trend. Submerged paddy soils exhibit huge NO emission potential; however, the NO emission pathway and underlying mechanisms for warming are not clearly understood. We conducted an incubation experiment using N to investigate the dynamics of NO emission at controlled temperatures (5, 15, 25, and 35°C) in 125% water-filled pore space.

[Differential Responses of Rhizospheric and -type Denitrifier Communities to Different Phosphorus Levels in Paddy Soil].

Phosphorus is an essential life element, which can affect the activities and functions of denitrifiers. Both and genes can code nitrite reductase; however, it remains unclear whether - and -containing denitrifers respond differentially to changes in the availability of phosphorus in paddy soil. In this study, P-deficient paddy soil was used to grow rice plants.

[Variation of community structure and function of rhizospheric denitrifiers at tillering and booting stages of rice].

We investigated the variation of denitrifying communities in rice rhizosphere at tillering and booting stages in comparison with bulk soils with a pot experiment. The techniques of quantitative polymerase chain reaction (qPCR) and terminal restriction fragment length polymorphism (T-RFLP) were used to measure the abundance and community composition of denitrifiers (narG and nosZ), respectively. The results showed that the potential denitrification activity in the rhizosphere at tillering stage was significantly lower than bulk soils.

[Flame atomic absorption spectrometric determination of H2O2 using (Au) core (Ag) shell nanoparticles].

The 10 nm gold nanoparticles were prepared by Frens procedure. Using tri-sodium citrate as reducer of AgNO3, and 10 nm gold nanoparticles as seed, the (Au)core(Ag)shell nanoparticles the size of about 30 nm were prepared at 90 degrees C for 10 min. Then it was separated by centrifuge at 10000 r x min(-1) for 15 min to obtain pure (Au)core(Ag)shell nanoparticles.

NG2 cells response to axonal alteration in the spinal cord white matter in mice with genetic disruption of neurofilament light subunit expression.

Background: Chondroitin sulphate proteoglycan (NG2) expressing cells, morphologically characterized by multi-branched processes and small cell bodies, are the 4th commonest cell population of non-neuronal cell type in the central nervous system (CNS). They can interact with nodes of Ranvier, receive synaptic input, generate action potential and respond to some pathological stimuli, but the function of the cells is still unclear. We assumed the NG2 cells may play an active role in neuropathogenesis and aimed to determine if NG2 cells could sense and response to the alterations in the axonal contents caused by disruption of neurofilament light subunit (NFL) expression.