[The spreading of Agrobacterium strains in soft-agar (author's transl)].
In a diluted synthetic medium solidified by 0.17% agar populations of Agrobacterium spread with a velocity of 0 to 20 mm/24 hours. This spreading is a consequence of chemotactic movement and cell division. Different bacterial strains spread with a characteristic velocity each. Loss of the TI-plasmid leaves the spreading behaviour unimpaired. It is changed after the introduction of virulence by Kerr transfer or after prolonged culture in D-amino acids.
D000362:Agar; D002455:Cell Division; D002633:Chemotaxis; D003470:Culture Media; D005947:Glucose; D010941:Plant Tumors / Q000209:etiology; D010957:Plasmids; D011995:Recombination, Genetic; D012231:Rhizobium / Q000235:genetics / Q000472:pathogenicity / Q000502:physiology*; D013045:Species Specificity; D014774:Virulence
D003470:Culture Media; D000362:Agar; D005947:Glucose
Die Ausbreitung von Agrobacterium-Stämmen im Weichagar.