Radix Astragali, the root of Astragalus (A.) membranaceus, has been applied in a variety of diseases for a long time in Asian countries such as Korea and China. In addition, the aerial parts such as leaves and stems of A. membranaceus have received a great deal of attention. Recently, the polysaccharide fraction showing a potent immunomoduating activity was isolated from the aerial parts of A. ...

The content of total phenolics in roots, leaflets and seeds of a number of Astingulus species from Iran was examined. Phenolics content of the aqueous and methanolic extracts of the species were determined spectrophotometrically. Phenolics content depend on factors such as the species, geographical location of the plants and the organs. Moreover, the content of phenolics depends on the extracti...

The conservation of rare plant species hinges on our ability to identify the underlying mechanisms that limit rare plant populations. Theory on rarity suggests that both predispersal seed predation and competition can be important mechanisms influencing abundance and/or distribution of rare plant populations. Yet few studies have tested these interactions, and those that have evaluated each mec...

Radix Astragali (RA), known as "Huangqi" in China, is one of the most popular herbal medicines known worldwide to reinforce "Qi". RA is traditionally prepared from the dried roots of Astragalus membranaceus (MJHQ) and A. membranaceus var. mongholicus (MGHQ). Radix Hedysari is named "Hongqi" (HQ), which is similar to RA. We assessed and compared the chemical constituents and bioactivity of RA an...

background and objectives: astragalus is one of the most abundant genera of flowering plants in iran. there are a few reports on phytochemical investigation of this valuable genus. saponins, flavonoids and polysaccharides have been reported as the most important metabolites in astragalus species. in the present research, we aimed to identify the foremost constituents of astragalus maximus. meth...

given the potential for carbon storage in plant tissues, this approach has a serious interest in recent decades. therefore, the ability of carbon storage in astragalus gossypinus and astragalus parrowianus were examined in part of alpine pastures in kermanshah province. after determining the representative districts, according to 4 main aspect and 5 category elevation was determined representat...

Stenotrophomonas maltophilia strain SeITE02 was isolated from the rhizosphere of the selenium-hyperaccumulating legume Astragalus bisculcatus. In this report, we provide the 4.56-Mb draft genome sequence of S. maltophilia SeITE02, a gammaproteobacterium that can withstand high concentrations of selenite and reduce these to elemental selenium.

Selenium (Se) hyperaccumulator plants can concentrate the toxic element Se up to 1% of shoot (DW) which is known to protect hyperaccumulator plants from generalist herbivores. There is evidence for Se-resistant insect herbivores capable of feeding upon hyperaccumulators. In this study, resistance to Se was investigated in seed chalcids and seed beetles found consuming seeds inside pods of Se-hy...

The aim of this study was to investigate the preventative effect of Astragalus flavescens on hepatic fibrosis in rats and its mechanism of action. A total of 60 rats were randomly divided into normal control, model control, high-dose treatment and low-dose treatment groups, and a hepatic fibrosis model was established. The high- and low-dose treatment groups were treated with 2 g/100 g and 0.5 ...