Search results for "Octopine"
showing 2 items of 2 documents
Two tissue-specific loci for octopine dehydrogenase in Tapes Decussatus (Bivalvia, Veneridae)
1992
Abstract 1. 1. Octopine dehydrogenase catalyses the reductive condensation of pyruvate and arginine to produce octopine in mollusc tissues. 2. 2. In all Bivalvia species studied to date, a single polymorphic locus, anodally migrating, was demonstrated. 3. 3. We studied, by starch gel electrophoresis, octopine isozymes in Tapes decussatus tissues. 4. 4. A polymorphic anodal form is present in adductor muscle, foot muscle, mantle and gill. 5. 5. A hepatopancreas-specific form, cathodally migrating, is also evident.
Seasonal fluctuations and long-term persistence of pathogenic populations of Agrobacterium spp. in soils.
2002
ABSTRACT Short- and long-term persistence of pathogenic (i.e., tumor forming) agrobacteria in soil was investigated in six nursery plots with a history of high crown gall incidence. No pathogenic Agrobacterium strains were isolated in soil samples taken in fall and winter in any plots, but such strains were isolated from both bulk soils and weed rhizospheres (over 0.5 × 10 5 pathogenic CFU/g of bulk soil or rhizosphere) in three out of six plots in spring and summer. PCR amplifications of a vir sequence from DNA extracted from soil confirmed the presence of Ti plasmids in summer and their absence in fall and winter. The results indicate that strains that harbor a Ti plasmid had an unforesee…