Screening of high-efficiency nitrogen-fixing bacteria from the traditional Chinese medicine plant Astragalus mongolicus and its effect on plant growth promotion and bacterial communities in the rhizosphere.

Background: Astragalus mongolicus Bunge is used in traditional Chinese medicine and is thus cultivated in bulk. The cultivation of A. mongolicus requires a large amount of nitrogen fertilizer, increasing the planting cost of medicinal materials and polluting the environment.

[Screening and identification of antagonistic Bacillus against Astragalus membranaceus root rot and its effect on microorganism community in root zone soil].

The Astragalus membranaceus root rot disease,a soil-borne disease,has become increasingly severe in Shanxi province.This study was aimed at getting antagonistic Bacillus with excellent bio-control effects,and determining its effects on bacterial communities in root zone soil. With Fusarium solani and F.

[Study on quality standard of rice as excipients during rice stir-frying method].

Commercially available japonica rice and indica rice with different trade names were collected,and then based on the method of rice stir-frying,their many indexes were evaluated,for example the physical and chemical properties such as appearance color,grain type,broken kernel ratio,length-width ratio,1 000-grain weight,specific heat capacity,moisture content,amylose content,and protein content. The discriminant function analysis was used to determine the effective factors affecting the quality of rice as excipients. The results showed that two types of rice could be distinguished by rice color parameter a*,grain parameter circularity,1 000-grain weight and amylose content.

[Tending of wild Heterosmilax yunnanensis].

To minimize the predatory harvest of Heterosmilax yunnanensis and maintain the sustainable utilization of its resources, a study on the tending technology of wild H. yunnanensis was carried out. The results showed that the tuber tending model had a higher seed emergence rate, shorter growth period and easier control of male and female ratios than other tending models; by removing shrubs, topping, bending pruning, controlling insects and pests and other effective technical measures, the growth period of H.

NMR based metabolomic comparison of the antitussive and expectorant effect of Farfarae Flos collected at different stages.

Farfarae Flos (FF) is widely used for the treatment of cough, bronchitis, and asthmatic disorders in the Traditional Chinese Medicine (TCM). According to the experience of TCM, only the flower bud can be used as herbal drug, and its medicinal quality becomes lower after blooming. However, the underlying scientific basis for this phenomenon is not fully understood.

[Analysis and evaluation of alkaloids and flavonoids in flower of Sophora flavescens from Shanxi province].

This study intends to explore the potential resource-orientedutilization value of the flower of Sophora flavescents by analyzing alkaloids and flavonoids in the flower of S. flavescens from Shanxi province. This study established a rapid UPLC-TQ-MS/MS method that is used for determination of seven alkaloids and seven flavonoids in the flower of S.

[In vitro screening and identification of plant growth-promoting rhizobacteria against pathogen causing Astragalus root rot].

The antagonistic effect of Bacillus spp. against Fusarium solani was evaluated by living body dual culture and Oxford cup method. The plant growth promoting properties of those strains that had obvious and stable antifungal activity were then tested.

[Evaluation analysis of alkaloids in seed of Sophora flavescens from Shanxi province and exploration of its utilization value].

According to the research strategy of resource chemistry of Chinese medicinal materials and Chinese medicinal resources recycling utilization, this study intends to explore the potential resource-oriented utilization value of the seed of Sophora flavescens by contrasting with its kindred plant S. alopecuroides. This study established a rapid UPLC-Q-TOF-MS/MS and UPLC-TQ-MS/MS method to determine the alkaloids in the seed of S.