The carbohydrate binding specificity of the daffodil (Narcissus pseudonarcissus; NPA) and amaryllis (Hippeastrum hybr.; HHA) lectins, isolated from extracts of their bulbs by affinity chromatography on immobilized mannose, was studied by quantitative precipitation, sugar hapten inhibition, and affinity chromatography on the immobilized lectins. These lectins gave strong precipitation reactions ...

The Amaryllidaceae alkaloids are a family of amino acid derived alkaloids with many biological activities; examples include haemanthamine, haemanthidine, galanthamine, lycorine, and maritidine. Central to the biosynthesis of the majority of these alkaloids is a C-C phenol-coupling reaction that can have para-para', para-ortho', or ortho-para' regiospecificity. Through comparative transcriptomic...

background and objectives: many members of the amaryllidaceae are regarded as toxic. the toxic constituents that occur in the whole family are referred to as the amaryllidaceae alkaloids. the main aim of this study was the identification of alkaloid compounds from galanthus transcaucasicus fomin, a medicinal plant from amaryllidaceae. methods: planar and column chromatography techniques were us...

The monophyletic Eurasian clade of Amaryllidaceae was analyzed using plastid ndhF and rDNA ITS sequences for 33 and 29 taxa, respectively; all genera were represented by at least one species. Both maximum parsimony and Bayesian analysis were used on each data set and the combined data. Both sequence matrices resolve the Central and East Asian tribe Lycorideae as sister to the Mediterranean-cent...

A b s t r a c t. We present a phylogenetic analysis of snow voles by combining all published cytochrome b sequences of 47 species of Microtus, Blanfordimys, Neodon and Chionomys and a new sequence from Chionomys gud. By applying powerful, modern approaches to phylogenetic reconstruction such as maximum likelihood (ML) and Bayesian inference methods (BI), we provide new information on the relati...

GC-MS (gas chromatography-mass spectrometry) analyses of alkaloids in the aerial parts and bulbs of Galanthus rizehensis Stern (Amaryllidaceae), collected during two different vegetation periods, was performed. Twenty three alkaloids were identified in four different alkaloid extracts. Acetylcholinesterase (AChE) inhibitory activities of the alkaloid extracts were tested. Both the highest alkal...

Two new species, Exobasidium rhododendri-nivalis on Rhododendron nivale and E. pyroloides on Gaultheria pyroloides, are reported. They were collected from Yunnan and Sichuan Provinces. Exobasidium rhododendri-nivalis causes small galls on leaves, stems and shoots, while E. pyroloides causes red leaf spots. Exobasidium cylindrosporum on Rhododendron sp., collected from Jiangxi Province, is repor...