Pathogenicity of selected soil-borne microorganisms for scorzonera seedlings (Scorzonera hispanica L.)

Phenolic compounds from the Mongolian medicinal plant Scorzonera radiata.

Chromatographic separation of a crude extract obtained from aerial parts of the Mongolian medicinal plant Scorzonera radiata yielded fifteen natural compounds, including two new flavonoids and one new quinic acid congener, as well as four flavones and eight quinic acid derivatives, all of which are known natural compounds. The structures of the isolated compounds were elucidated on the basis of...

Response of Etiolated Pea Seedlings and Cotton to Ethylene Produced from L-methionine by Soil Microorganisms

The presence of a suitable substrate(s) in soil may release physiologically active concentration of a plant hormone ethylene (C2H4) as a result of microbial activity. We isolated three strains of fungi (Aspergillus clavatus, Penicillium commure and Thamridium elegans), from the maize rhizosphere soil, capable of producing C2H4 in the soil from L-methionine (10 mmol l). The plate and soil inocul...

Rediscovery of Scorzonera Amasiana Hausskn. and Bornm. - a Threatened Endemic Species in Turkey

Scorzonera amasiana Hausskn. and Bornm. was described from type specimens collected by J.F.N. Bornmueller in 1889 but it was not collected again until 1993, when it was found near Amasya, Turkey. Populations of S. amasiana were quite small at that limited locations and were vulnerable to human impacts. Therefore, suitable conservation strategies should be developed immediately in order to prote...

Flavonoid Glycosides and Their Derivatives from the Herbs of Scorzonera austriaca Wild.

Five flavonoid glycosides and two derivatives were isolated from the herbs of Scorzonera austriaca Wild by silica gel column chromatography and preparative HPLC. Their structures were identified, using chemical and spectroscopic methods, as 5,7,4'-trihydroxyflavone 6-C-(2''-O-β-d-glucopyranosyl β-d-glucopyranoside) (1), 5,7,3',4'-tetrahydroxyflavone 6-C-(2''-O-β-d-glucopyranosyl β-d-glucopyrano...

نکاتی درباره جنسهای .Scorzonera L و .Scolymus L از تیره آفتابگردان درایران