CLAVATA3/EMBRYO SURROUNDING REGION Genes Involved in Symbiotic Nodulation in Pisum sativum

Interactions between Symbiotic Nitrogen Fixation, Combined-N Application, and Photosynthesis in Pisum sativum

The efTect of photosynthetic photon flux density (PPFD) on nitrogen utilization was determined in peas (Pisum sativum L. cv. Alaska) inoculated with Rhizobium leguminosarum and treated with nutrient solutions containing no combined nitrogen, 16 mM NOj", or 16 mM N H / . Plants were grown under controlled conditions at three PPFD values ranging from severely limiting to nearly saturating. Carbox...

Ethylene Inhibitors Restore Nodulation to sym 5 Mutants of Pisum sativum L. cv Sparkle.

The sym 5 mutants of pea, Pisum sativum L. cv Sparkle, do not differ in growth habit from their normal parent and nodulate poorly at a root temperature of 20 degrees C. If inhibitors of ethylene formation or action (Co(2+), aminoethoxyvinylglycine, or Ag(+)) are added to the substrate, nodulation of the sym 5 mutants is increased. Similar treatments of four other mutant sym lines do not restore...

Effect of exogenous flavonoids on nodulation of pea (Pisum sativum L.).

Selected flavonoids that are known as inducers and a suppressor of nodulation (nod) genes of the symbiotic bacterium Rhizobium leguminosarum bv. viciae were tested for their effect on symbiosis formation with garden pea as the host. A solid substrate was omitted from the hydroponic growing system in order to prevent losses of flavonoids due to adsorption and degradation. The presumed interactio...

Concerning artificial crossing in Pisum sativum.

Nucleic Acid Metabolism in Pisum sativum Alaska

Sunmmary. Phosfon-S, a substance which inhibits stem elongation, alters nucleic acid metaboli,sm in Pisutm sativum Alaska. Methylated albumin kieselguhr (MAK) columns were used to fractionate 32P-labeled nucleic acids. Phosfon-S treatment of the plants resulted in a decrease in soluble RNA and an increase in ribo,somal RNA. Specific activities of the various nucleic acid fractions were lower as...