Elevated CO Increased Antibiotic Resistomes in Seed Endophytes: Evidence from a Free-Air CO Enrichment (FACE) Experiment.

Climate warming affects antibiotic resistance genes (ARGs) in soil and the plant microbiome, including seed endophytes. Seeds act as vectors for ARG dissemination in the soil-plant system, but the impact of elevated CO on seed resistomes remains poorly understood. Here, a free-air CO enrichment system was used to examine the impact of elevated CO on seed-associated ARGs and seed endophytic bacteria and fungi.

[Response of Yield, CH, and NO Emissions from Paddy Fields to Long-term Elevated CO Concentrations].

Elevated atmospheric CO concentrations([CO]) are the main driving force of global climate change, which directly and indirectly affect carbon and nitrogen cycling in the paddy ecosystems. Therefore, understanding the response of rice yield and greenhouse gas emissions to long-term(more than 10 years)[CO] from paddy fields is of great significance for food security and future climate change assessment. In this study, strongly and weakly responsive cultivars were used as the experimental materials.

[Effect of Elevated CO on NO Emissions from Different Rice Cultivars in Rice Fields].

Using the free air CO enrichment (FACE) platform, an in-situ field experiment was conducted to explore the impacts of elevated CO mole fraction ([CO]) on NO emissions from strongly and weakly responsive rice cultivars. Under elevated [CO], grain yield of the strongly responsive rice cultivars increased significantly, by more than 30%, whereas the weakly responsive cultivars showed a growth rate of 10%-15%. The four treatments comprised A-W (normal [CO]+weakly responsive cultivar), F-W (elevated [CO]+weakly responsive cultivar), A-S (normal [CO]+strongly responsive cultivar), and F-S (elevated [CO]+strongly responsive cultivar).

Effects of Decabromodiphenyl Ether and Elevated Carbon Dioxide on Rice (Oryza sativa L.).

We assessed the effects of carbon dioxide (CO) and decabromodiphenyl ether (BDE-209, 0, 3 and 30 mg/kg) on rice (Oryza sativa L. cv. Wuyunjing) in field free-air CO enrichment system.

[Effects of elevated atmospheric CO concentration on chemical composition of rice straw].

Rice straw is a potential material for bioenergy production. Elevated atmospheric carbon dioxide (CO) concentration changed the quantity and quality of rice straw, thus changing its bioenergy production potential. In this experiment, we collected rice straw from China Free Air CO Enrichment Platform (FACE).

[Effects of elevated atmospheric CO concentration on the stability of soil organic carbon in different layers of a paddy soil].

It is vital to study the effects of elevated atmospheric CO concentration on the soil orga-nic carbon (SOC) stability in different soil layers for better understanding the mechanism of SOC transformation under the elevated atmospheric CO concentration. The paddy soil in a long-term FACE (Free Air Carbon-dioxide Enrichment) experiment was selected as the research object. Through the SOC physical fractionation and soil mineralization incubation, the effects of elevated atmospheric CO concentration on the soil organic carbon (SOC) content, particle organic matter (POM) content, SOC mineralization intensity, and enzyme activities were measured.

[Effect of schisantherin A inhibit liver sinusoid endothelial cell function and action against liver fibrosis relating to angiogenesis].

To investigate the effect of schisantherin A on liver sinusoid endothelial cell function and angiogenesis. Different dosages (0-40 μmol•L⁻¹) of schisantherin A were incubated 24 h with SK-HEP-1 cells, and the toxicity of SK-HEP-1 cells was assayed by MTT method. The proliferation of SK-HEP-1 cells were induced by the vascular endothelial growth factor (VEGF), with receptor tyrosine kinase inhibitor sorafenib as the control, at the same time, set up the control group, 2, 20 μmol•L⁻¹ schisantherin A were incubated with SK-HEP-1 cells, cell proliferation was analyzed by EdU DNA cell proliferation kit.

[Effects of O3-FACE(ozone-free air control enrichment) on gas exchange and chlorophyll fluorescence of rice leaf].

O3-FACE (Ozone-free air control enrichment) platform has been established for observing the effect of elevated tropospheric ozone concentration on the gas exchange and chlorophyll fluorescence of two rice varieties (Wuyunjing 21 and Liangyoupeijiu). The results showed that high ozone concentration decreased the net photosynthetic rate (Pn), stomatal conductance (Gs), and transpiration rate (Tr) of rice leaves. After 76d fumigation the decline in them for Wuyunjing 21 was as follows: 21.