Results 301 to 310 of about 80,673 (331)

Agrobacterium tumefaciens as an agent of disease

Trends in Plant Science, 2003
Twenty-six years ago it was found that the common soil bacterium Agrobacterium tumefaciens is capable of extraordinary feats of interkingdom genetic transfer. Since this discovery, A. tumefaciens has served as a model system for the study of type IV bacterial secretory systems, horizontal gene transfer and bacterial-plant signal exchange.
Matthew A. Escobar, Abhaya M. Dandekar
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Transformation of rice mediated by Agrobacterium tumefaciens

Plant Molecular Biology, 1997
Agrobacterium tumefaciens has been routinely utilized in gene transfer to dicotyledonous plants, but monocotyledonous plants including important cereals were thought to be recalcitrant to this technology as they were outside the host range of crown gall. Various challenges to infect monocotyledons including rice with Agrobacterium had been made in many
Yukoh Hiei, Tomoaki Kubo, Toshihiko Komari   +2 more
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Particulate Cytochrome c in Agrobacterium tumefaciens

Archives Internationales de Physiologie et de Biochimie, 1975
In Agrobacterium tumefaciens the main part of c-type cytochromes is tightly bound to the bacterial cell envelope structures. Several techniques were attempted to solubilize these cytochromes. The highest yield of cytochromes released is obtained by treatment of particle suspensions with 5% Triton X-100.
Van Den Branden, Christiane, Van Beeumen, J., De Ley, Jozef   +2 more
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The Oncogenes of Agrobacterium Tumefaciens and Agrobacterium Rhizogenes

2008
The common soil bacteria Agrobacterium tumefaciens and Agrobacterium rhizogenes are unique genetic pathogens capable of fundamentally redirecting plant metabolism in order to generate macroscopic tissue masses (crown galls and hairy roots, respectively) which support the growth of large populations of Agrobacteria.
Matthew A. Escobar, Abhaya M. Dandekar, Monica Britton   +2 more
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Characterization of an Agrobacterium tumefaciens lectin

Glycobiology, 1991
An Agrobacterium tumefaciens suspension induces a strong agglutination of aldehyde-fixed pig erythrocytes at pH 5.0. The agglutination is inhibited by some polysaccharides, such as fucoidin, and also when the pH is raised to 7.0. Lectins (sugar-binding proteins) associated with the bacterial cell wall of A.
C. Depierreux, B. Guérin, H.-C. Kang, Michel Monsigny, Francis M. Delmotte   +4 more
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Exploitation of Agrobacterium tumefaciens

1992
During invasion of wounded plants, soil agrobacteria transfer a defined segment of their Ti and Ri plasmids into the plants. The transferred DNA, termed T-DNA, is integrated into the plant nuclear genome. Genes encoded by Ti and Ri plasmid T-DNAs are expressed in plants and confer the synthesis of plant growth factors as well as sugar and amino acid ...
Jozef Schell, Csaba Koncz
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THE INDUCTION OF LEAF TUMORS BY AGROBACTERIUM TUMEFACIENS

American Journal of Botany, 1965
Using carborundum as an abrasive and light rubbing with a culture of Agrobacterium tumefaciens, leaves of various species of bean and tobacco develop tumors on the leaf lamina. The induction of these tumors requires wounding, the presence of a virulent strain of the bacterium and is due to the bacterium, not substances released into the bacterial ...
James A. Lippincott, Gary T. Heberlein
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Exopolysaccharides of Agrobacterium tumefaciens

2018
Agrobacterium exopolysaccharides play a major role in the life of the cell. Exopolysaccharides are required for bacterial growth as a biofilm and they protect the bacteria against environmental stresses. Five of the exopolysaccharides made by A. tumefaciens have been characterized extensively with respect to their structure, synthesis, regulation, and ...
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THE QUANTITATIVE DETERMINATION OF THE INFECTIVITY OF AGROBACTERIUM TUMEFACIENS

American Journal of Botany, 1965
A bioassay relating number of Agrobacterium tumefaciens cells in the inoculum quantitatively to the number of crown‐gall tumors initiated on primary pinto bean leaves is described. Variability in estimation of infectious titers by this assay is similar to that observed in comparable plant virus assays, most determinations showing standard errors of 20%
James A. Lippincott, Gary T. Heberlein
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Specificity patterns of Agrobacterium tumefaciens phages

Archiv f�r Mikrobiologie, 1970
Lysogeny was not detected in 10 strains of A. tumefaciens by plating techniques or ultra-violet induction. Fifteen phages were isolated from raw sewage against 13 cultures of A. tumefaciens and purified by single-plaque selections. No phage lysed all of the strains of A.
R. J. Boyd, O. N. Allen, A. C. Hildebrandt   +2 more
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