[The role of chemotaxis genes in establishing the associative relations between Azospirillum brasilense and wheat].
The chemotactic properties of a number of Azospirillum brasilense natural strains have been studied. Azospirillum demonstrate the positive chemotactic reaction towards the organic acids salts but a poor reaction towards the presence of the attractants like hydrocarbons and aminoacids except for arabinose and glutamic acid. The series of Che- mutants deficient in general chemotaxis has been selected by introducing the transposon Tn5 into the cells of rifampicinresistant mutant strain Azospirillum brasilense 5T-2. The ability of the mutant cells to fast and solid adsorption on the roots of the sterile wheat sprouts is shown to be decreased 2-3 folds as compared with the one of the wild type strain. Chemotaxis is suggested to affect the adsorbtion ability of azospirillum and their associative properties.
Bakanchikova
T I
TI
Miakin'kov
A G
AG
Pavlova-Ivanova
L K
LK
Maĭsurian
A N
AN
D002633:Chemotaxis; D004251:DNA Transposable Elements; D005798:Genes, Bacterial; D006088:Gram-Negative Aerobic Bacteria / Q000235:genetics* / Q000502:physiology; D013559:Symbiosis; D014908:Triticum / Q000378:metabolism* / Q000382:microbiology
D004251:DNA Transposable Elements
Uchastie genov khemotaksisa v ustanovlenii assotsiativnykh vzaimootnosheniĭ mezhdu Azopirillum brasilense i pshenitseĭ.