Effect of Codonopsis Radix and Polygonati Rhizoma on the regulation of the IRS1/PI3K/AKT signaling pathway in type 2 diabetic mice.

Objective: Codonopsis Radix and Polygonati Rhizoma (CRPR) has a good hypoglycemic effect. The aims of the present study were to investigate the effect of CRPR on high-fat/high-sugar diet (HFHSD)- and streptozotocin (STZ)-induced type 2 diabetes mellitus (T2DM) mice as well as to investigate the involved mechanism.

Methods: A T2DM mouse model was generated by combining HFHSD and STZ.

[Effects of Pyrene on Low Molecule Weight Organic Compounds in the Root Exudates of Five Species of ].

Phytoremediation is an important measure to remove organic pollutants from contaminated soil, and the root secretion of plant is considered to be closely related to the mechanisms of phytoremediation of organic pollutants. It is in favor of revealing the mechanisms of remediation by studying the characteristics of root exudates of plants with phytoremediation potential under the stress of pollutants. In the present research, pyrene and five species of which have been testified to be tolerant to pyrene stress were selected as studied objects.

[Mechanisms of the removal and remediation of phenanthrene and pyrene in soil by Pogonatherum paniceum].

The mechanisms of the removal and accumulation of phenanthrene (PHE) and pyrene (PYR) by rock plant Pogonatherum paniceum were studied by pot experiments. Results showed that P. paniceum might effectively remove PHE and PYR from soils at their initial concentrations of 20 to 322 mg x kg(-1).

[Effects of compensation capacity and palatability on the dominance of plant species in grazing community].

With simulated mowing experiment and field survey, the compensation capacity and dominance shift of nine alpine plant species in grazing community were studied. The results showed that for most test species, there existed definite correlations between their compensation capacity and palatability. The species with better palatability, i.