Plants of Rumex thyrsiflorus Fingerh., R. crispus L. and R. muritimus L., which are zoned along a gradient of elevation in a river foreland ecosystem, and differ in their flood-tolerance, were subjected to different Hooding levels. Under conditions of soil flooding, the growth rates of the flood-tolerant R. crispus and R. muritimus were as high as under drained conditions, but that of the flood...

BACKGROUND The leaves of Strobilanthes crispus (S. crispus) which is native to the regions of Madagascar to the Malay Archipelago, are used in folk medicine for their antidiabetic, diuretic, anticancer and blood pressure lowering properties. Crude extracts of this plant have been found to be cytotoxic to human cancer cell lines and protective against chemically-induced hepatocarcinogenesis in r...

Hexose oxidase from Chondrus crispus catalyzes the oxidation of a variety of mono- and disaccharides including D-glucose, D-galactose, maltose, and lactose. The enzyme has previously been partially purified and was reported to be a highly glycosylated, copper-containing protein with a relative molecular mass of approximately 130,000 (Sullivan, J. D., and Ikawa, M. (1973) Biochim. Biophys. Acta ...

The rate of photosynthetic carbon uptake of Chondrus crispus Stack-house plants, at various CO(2) concentrations and pretreated with carbonic anhydrase (CA) inhibitors, was determined using an air-suspension, differential infra-red gas analyzer technique. It was found that the CA inhibitors, acetazolamide, dextran-bound acetazolamide (DBI, which does not permeate cell membranes), and subtilisin...

Potamogeton is one of the most difficult groups to clarify in aquatic plants, which has an extensive range of interspecific morphological and ecological diversity. Internal transcribed spacer (ITS) is prevalent for phylogenetic analysis in plants. However, most researches demonstrate that ITS has a high percentage of homoplasy in phylogenetic datasets. In this study, eighteen materials were col...

Three enclosures (10 x 10 x 1.5-1.3 m in depth) were set beside Dianch Lake, Kunming, People's Republic of China, for the period from July 28 to August 26, 2002. The enclosures were filled with cyanobacterial (Microcystis aeruginosa) water bloom-containing lake water. Lake sediment that contained macrophytes and water chestnut seeds was spread over the entire bottom of each enclosure. Initially...

Aquatic plants anchored in streams are under pressure from various constraints linked to the water flow and display strategies to prevent their damage or destruction. We assume that the responses of aquatic plants to fast-water flow are a manifestation of a trade-off consisting in either maximizing the resistance to damage (tolerance strategy) in minimizing the hydrodynamic forces (avoidance st...