Two new prenylflavans [kazinols Q (1) and R (2)] and five known compounds [kazinols D (3), K (4), and H, 7,4'-dihydroxyflavan (5), and oleanolic acid] were isolated from the root bark of Broussonetia kazinoki. The cytotoxic activity of 1-5 was evaluated against several different cell lines.

BACKGROUND Cognitive impairment is one of the most crucial disorders among multiple sclerosis (MS) patients. Since MS is an inflammatory disease and Boswellia papyrifera has anti-inflammatory effects, the influence of B. papyrifera on cognitive impairment in MS patients has been investigated in the present study. METHODS In this clinical trial, 80 MS patients who referred to the clinic of Sha...

We investigated the effect of elevated CO # on the growth and mycorrhizal colonization of three tree species native to north-eastern American forests (Betula papyrifera Marsh., Pinus strobus L. and Tsuga canadensis L. Carr). Saplings of the tree species were collected from Harvard Forest, Massachusetts, and grown in forest soil under ambient (c. 375 ppm) and elevated (700 ppm) atmospheric CO # ...

Broussonetines are glycosidase-inhibitory alkaloids obtained from Broussonetia kazinoki. Feeding experiments using [1-13C]glucose and 13C-NMR spectroscopic studies showed that broussonetines are biosynthesized through routes similar to those of sphingosine and phytosphingosine.

A tanulmány 44 neofiton faj 272 új elterjedési adatát tartalmazza Magyarország területéről az elmúlt néhány évből. Először sikerült kimutatni Magyarországról Iris orientalis-t, melynek meghonosodott populációját találtuk kiszáradt, sztyeppesedő mocsárréten. közelmúltban megtelepedett, de vélhetően vasút mentén gyorsan terjedő lesz a Lepidium oblongum. Kerti szökevényként Buddleja davidii és Bro...

We investigated how patchy nitrate availability influences growth and functioning of plant roots and generates, through vascular constraints on long-distance transport, aboveground heterogeneity in plant growth and chemistry. We examined two broadleaf tree species, Acer rubrum L. and Betula papyrifera Marsh. Plants were grown either in a split-root setup where a single root received full nutrie...