Agrobacterium tumours

Some plant-infecting bacteria secrete plasmids which induce plants to manufacture opines, substances which help the bacterium flourish in the plant. For example. Agrobacterium tumefaciens, which induces tumours in dicotyledons, injects circular DNA programmed to make agropine, which is the l,2 -lactone of A -T-deoxymannitol-r-ylglutamine (Tate et al., 1982). Most opines are iV-substituted amino acids. For a defensive response of plants to invasion, see phytoalexins, Section 6.4.2. 

C18H33O19P 584.421 Revised struct., originally assigned as the sucros-6-yl isomer. Produced in crown gall tumours by Agrobacterium tumefaciens. 

C17H31O18P 554.395 Produced in crown gall tumours incited by nopaline strains of Agrobacterium tumefaciens. Amorph. solid (as Na salt). [a]o +47.9 (c, 1 in H2O) (Na salt). 

C11H21O13P 392.253 Prod, in crown gall tumours induced by nopaline strains of Agrobacterium tumefaciens. 

Constit. of the disaccharide from the culture media of the crown gall tumour inducing organism Agrobacterium tumefaciens. 

O Dowd NA, Richardson DHS (1994) Production of tumours and roots by Ephedra following Agrobacterium rhizogenes infection. Can J Bot 72 203-207... 

Chrysopine 1, the spiro-lactone of Ar -(l-deoxy-D-fructos-l-yl)-L-glutamine, and thus a product of the Amadori reaction of glucose with glutamine, has been isolated from crown gall tumours induced on tobacco plants by Agrobacterium twnefaciens. Its anomeric configuration was not determined. ... 

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