In seedlings of Raphanus sativus (radish) and Sinapis alba (mustard), irradiation for 6 hours with far red light significantly increases the extractable activity of phenylalanine ammonia-lyase by the end of the light period. A schedule of 10 minutes red light-110 minutes darkness-10 minutes red-110 minutes darkness-10 minutes red-110 minutes darkness has no effect as compared to dark controls. ...

The chronic ecotoxicological effects of Cd, Cu, Pb, Se and Zn were determined within this study. Mustard seedlings (Sinapis alba L.) were used as a model subject for the tests. The phytotoxicity was determined through the root growth inhibition and photosynthetic pigments production (chlorophyll a, b, total carotenoids). The metal accumulation in the roots and cotyledons was also determined usi...

Two cDNA clones, encoding cytosolic and chloroplast glyceraldehyde-3-phosphate dehydrogenases (GAPDH) from mustard (Sinapis alba), have been identified and sequenced. Comparison of the deduced amino acid sequences with one another and with the GAPDH sequences from animals, yeast and bacteria demonstrates that nucleus-encoded subunit A of chloroplast GAPDH is distinct from its cytosolic counterp...

The frequency of gene flow from Brassica napus L. (canola) to four wild relatives, Brassica rapa L., Raphanus raphanistrum L., Sinapis arvensis L. and Erucastrum gallicum (Willd.) O.E. Schulz, was assessed in greenhouse and/or field experiments, and actual rates measured in commercial fields in Canada. Various marker systems were used to detect hybrid individuals: herbicide resistance traits (H...

The effect of different growth light intensities (60 W • m -2, 6 W • m -2) on the performance of the photosynthetic apparatus of mustard plants (Sinapis alba L.) was studied. A distinct decrease in photosystem II content per chlorophyll under low-light conditions compared to high-light condi­ tions was found. For P-680 as well as for QA and Q B protein the molar ratio between high-light and low...

The matK gene is named according to its possible maturase function and its location within the trnK gene encoding the tRNA (UUU). A 509 open reading frame was found to reside in an intron when the trnK gene was sequenced in tobacco (Nicotiana tabacum) (Sugita et al., 1985). Later, a complete sequence of the liverwort Marchantia polymorpha confirmed the existence of this open reading frame in th...

Hoagland’s nutrient solution (HS) * was used as a tool to investigate whether or not the phyto­ chrome-mediated appearance of phenylalanine ammonia-lyase (PAL) * and ascorbate oxidase (AO) * in the mustard seedling cotyledons is simply a modulation of the appearance of these enzymes in the dark (basal level). HS was applied to the mustard (Sinapis alba L.) seedling at sowing instead of distille...