this study was conducted to evaluate the effect of sowing date on morphology, yield parameters, as well as oil percentage and fatty acids composition of castor bean. the experiment was carried out at research farm of tarbiatmodaresuniversity, in randomized complete blocks design with three replications during 2010. plants were grown at six sowing dates of 5th april, 20th april, 5th may, 20th ma...

Arcelin is a novel seed protein first found in several accessions of the wild Mexican bean, Phaseolus vulgaris L. var aborigeneus (8). It is closely related to bean lectin, both at the amino acid and nucleotide levels (5). There are five allelic variants of arcelin (4, 6). The Arc 1 (Table I, Fig. 1) protein migrates as two bands on polyacrylamide gels with Mr of 35,000 to 38,000. These two ban...

8-Azidoadenine was employed as a photoaffinity probe of the adenine binding site of the seed lectin from lima beans and from Phaseolus vulgaris erythroagglutinin. This compound was shown to (a) bind competitively to the adenine binding site of these lectins and (b) exhibit enhanced binding in the presence of 1,8-anilinonaphthalenesulfonic acid in the same manner as adenine. The presence or abse...

A plant cysteine endopeptidase with a molecular mass of 35 kD was purified from microbodies of germinating castor bean (Ricinus communis) endosperm by virtue of its capacity to specifically process the glyoxysomal malate dehydrogenase precursor protein to the mature subunit in vitro. Processing of the glyoxysomal malate dehydrogenase precursor occurs sequentially in three steps, the first inter...

The increased concern for environmental and health hazards have called for a reduction in the use of synthetic nematicides for nematode control. Experiments were, therefore, conducted to ascertain the nematicidal potential of castor bean’s crude extract and its five lower concentrations with water as control. In the in vitro studies, crude castor bean aqueous extract and 10, 20, 30 and 40% diff...