We determined the in vitro antioxidant activity of methanolic extracts from the shoots and roots of Scutellaria species (S. altissima and S. alpina) against the action of strong oxidants: hydrogen peroxide (H2O2) and H2O2+Fe(2+) (donor of hydroxyl radicals) on plasma proteins and lipids. Lipid peroxidation in human plasma was measured by the level of thiobarbituric acid reactive species (TBARS)...

The types of five taxa described with material from northern Africa have been revised, yielding the following results: Barbula commutata var. erosa Corb. is synomyzed Streblotrichum convolutum commutatum; Bryum trabutii Thér. Ptychostomum rubens; Thamnium alopecurum decipiens Scorpiurium circinatum; and Trichostomum mediterraneum algeriae Müll. Hal. ex Geh. Hydrogonium bolleanum. Funaria altiss...

The present investigation of the chemical constituents of the stem barks of Ailanthus altissima has resulted in the isolation of six canthinone-type alkaloids, including a new compound, (R)-5-(1-hydroxyethyl)-canthine-6-one (1), and five known compounds (2-6). Moreover, four phenyl propanoids (7-10), two lignans (11 and 12), two triterpenoids (13 and 14) and a fatty acid (15) having previously ...

We show that a predator, the tumbling flower beetle Mordellistena convicta (Coleoptera: Mordellidae), has formed host races in response to a host-plant shift and subsequent host-race formation by its prey, the gall-inducing fly Eurosta solidaginis (Diptera: Tephritidae). This fly has formed two host races, one that induces stem galls on the ancestral host plant, Solidago altissima (Compositae),...

Intraspecific variation in plants is driven by both genetic and environmental factors and has been shown to play an important role in determining assemblages of herbivores, predators, and pathogens. Yet, the consequences of genetic (G) and environmental (E) factors, as well as potential (G3E) interactions, for floral visitor communities remains poorly explored. In a common garden experiment, we...

In areas where the tree of heaven (Ailanthus altissima) appears and multiplies, original vegetation degrades transforms. The invasive is also great importance in urban environments, it causes building damage, static problems endangers utilities. Ailanthus pollen concentration was measured during 3-year period (2016-2018) at three county capitals (Szolnok, Debrecen, Nyíregyháza) Northern Great P...

Ailanthus altissima, the invasive forest tree commonly known as tree-of-heaven, has been associated with decreased levels of plant species richness and native diversity. However, this relationship resident plants inconsistently found tree’s influence on seedbank yet to be studied. To further understand long-term impact tree, ten paired invaded-uninvaded sites were identified in Virginia, USA a ...

The distribution of 14 iridoid glucosides in 14 Plantago L. species (44 samples corresponding to 18 taxa) was shown. P. tenuiflora and P. gentianoides were studied for iridoids for the first time. The iridoid patterns showed a good correlation with morphological and other chemical features of the representatives of genus Plantago. The studied species are grouped together according to the iridoi...