Tailings are among the most challenging mined substrates for plant re-establishment, in particular because of a lack soil-like structure and nitrogen. Potential pioneer plants sometimes found such disturbed infertile sites. We present group species from genus Maireana (Chenopodiaceae) that promising candidates restoration magnetite tailings. these did not rely on biologically fixed N atmosphere...

Chenopodiaceae, Spinacia oleracea, Flavonoid Metabolism, Chalcone Synthase, Two Different Activities Chalcone synthase activity was found in enzyme preparations from spinach. In homogenates o f young leaves two different activities o f the enzyme could be separated by DEAE-ion exchange chromatography and chromatofocusing. Both activities formed naringenin with [2-14C] malonylCoA and 4-coumaroyl...

Plant hydraulic characteristics were studied in diploid, tetraploid and hexaploid cytotypes of Atriplex canescens (Chenopodiaceae) to investigate the potential physiological basis underlying the intraspecific habitat differentiation among plants of different ploidy levels. Populations of A. canescens from different habitats of the Chihuahuan Desert (New Mexico, USA) were analyzed using flow cyt...

An aeropalynological study was carried out in the atmosphere of Estepona, a very popular tourist resort situated in the "Costa del Sol", (southern Spain) based on the data obtained during a three year air-monitoring programme (March 1995 to March 1998) using a volumetric pollen trap. The 34 taxa that reached a 10-day mean air pollen concentration equal to or greater than 1 grain of pollen/m(3) ...