Absorption of selenate and selenite by excised roots of Astragalus Crotalariae, a selenium accumulator, and of A. lentiginosus, a non-accumulator, was favored by CaCl(2) and a pH of 4.0. The uptake of selenate and possibly selenite, is metabolically linked. Roots of a number of Astragalus species were examined, and in all cases selenate entered the roots much faster than selenite. In these shor...

A new subgenus of the genus Manulea Wallengren, 1863, Tortrilema subgen. n. is described and briefly reviewed. species, M. nubes sp. from North Vietnam. synonymy established: (Nyea) Agenjo, 1983 = (Agenjoa) Dubatolov & Zolotuhin, 2011, syn. nov.

Although Astragalus, Ligusticum and Schizandrae have a long history of medicinal use within the traditional Chinese system, only recently has the West begun to understand their pharmacological possibilities and clinical applications. Astragalus has demonstrated a wide range of immunopotentiating effects and has proven efficacious as an adjunct cancer therapy. Ligusticum, and its active componen...

This paper shows the changes of the volatile compounds from four Astragalus species at three phenological stages: leaf development, flowering and fructification, which might be connected with the plant defense. After GC/MS analyses of Astragalus glycyphyllos L., A. hamosus L., A. cicer L. and A. spruneri Boiss., different groups of volatile compounds were found: hydrocarbons, alcohols, aldehyde...

Conservationists often propagate rare species to improve their long-term population viability. However, seed dormancy can make propagation efforts challenging by substantially lowering seed germination. Here I statistically compare several pretreatment options for seeds of Astragalus cicer L.: unscarified controls and scarification via physical damage, hot water, acid, and hydrogen peroxide. Al...

Astragalus (Fabaceae), the largest genus of plants in the world with an estimated 3270 species, is known for large numbers of rare endemic species. An inventory of patterns of climatic, topographic, and edaphic diversity of Astragalus taxa in California (98 native species and 144 named taxa) provides a means to understand the occurrence of rarity in relation to climatic equitability and regiona...

With the increasing number of cryptic species discovered in major branches subfamily Steganinae, accurate identification is becoming challenging. Possible evolutionary stasis often gives rise to formation morphological conservatism and species, as case for members Stegana (subgen. Orthostegana). In this study, boundaries all Asian Orthostegana were accessed based on two mitochondrial genes [cyt...

A new subgenus Cretalinea subgen. nov. of Trichoneura (Diptera, Limoniidae) is established with one species: (Cretalinea) xavieri et sp. This the first report genus in Spanish amber and record from Lower Cretaceous period. The oldest described species compared other particular reference to those known Upper Cretaceous. list key fossil are given.