Zobrazeno 1 - 10
of 18
pro vyhledávání: '"E. A. Schwinghamer"'
Publikováno v:
Plant Physiology. 53:198-205
A riboflavin-requiring auxotroph of Rhizobium trifolii (T1/D-his(r)-15) formed ineffective root nodules on red clover and on two cultivars of subterranean clover, but produced almost fully effective nodules on several other cultivars of subterranean
Autor:
E. A. Schwinghamer
Publikováno v:
Journal of General Microbiology. 91:403-413
Bacteriocins produced by six strains of Rhizobium trifolii were found to be of the relatively low molecular weight, non-phage type. The molecular weights ranged from approximately 1-8 X 105 to 2-0 X 105. All were of protein composition, as indicated
Autor:
E. A. Raleigh, Robert A. Ludwig, E. A. Schwinghamer, M. J. Duncan, D. T. Tran, Ethan R. Signer, D. C. Jordan, E. L. Schmidt, W. F. Dudman, A. H. Gibson
Publikováno v:
Proceedings of the National Academy of Sciences. 76:3942-3946
Two recent reports described the isolation of derivatives of a Rhizobium trifolii strain that had gained the ability to nodulate Glycine max and Vigna radiata and that had demonstrated altered patterns of carbon source utilization, free-living nitrog
Publikováno v:
Canadian Journal of Microbiology. 19:359-368
An inducible bacteriocin produced by a strain of Rhizobium trifolii was partially purified by ammonium sulfate precipitation and differential centrifugation. Examination of fractions of this material banded in sucrose gradients showed a close correla
Autor:
E. A. Schwinghamer, W. F. Dudman
Publikováno v:
Journal of Applied Bacteriology. 36:263-272
Resistance to the antibiotic spectinomycin has been examined as a possible marker to supplement streptomycin resistance in ecological or genetic studies with rhizobia. Single step spontaneous mutants resistant to high levels of spectinomycin were iso
Publikováno v:
Plant and Soil. 35:3-16
A study has been made of the symbiotic effectiveness ofRhizobium trifolii in fields ofTrifolium subterraneum in south-eastern Australia, with the purpose of providing background information for a programme of inoculant strain improvement. The strains
Publikováno v:
Journal of General Microbiology. 70:161-177
SUMMARY: Root nodules formed by a riboflavin-requiring auxotroph of Rhizobium trifolii (TI/D-hisr-15) on red clover (Trifolium pratense L.) seedlings grown with or without added riboflavin, showed changes in structure or acetylene-reducing activity w
Autor:
E. A. Schwinghamer
Publikováno v:
Canadian Journal of Microbiology. 10:221-233
Loss of effectiveness was found to be closely associated with mutation to viomycin resistance and neomycin resistance in strains representing three cross-inoculation groups of Rhizobium—R. leguminosarum, R. trifolii, and R. meliloti. Twenty-nine of
Publikováno v:
Plant and Soil. 33:192-212
The feasibility of the acetylene reduction technique for evaluation of comparative effectiveness inRhizobium was tested inR. leguminosarum, R. trifolii, andR. meliloti with strains which were closely related but differed widely in effectiveness. Seve
Autor:
E. A. Schwinghamer
Publikováno v:
American Journal of Botany. 49:269-277
Mutamt strains capable of modulating pea seedlings ineffectively (incapable of nitrogen fixation) were obtained from 2 amtibiotic-resistant marked strains of Rhizobium trifolii which normally do not form nodules om this host. Such variant forms appar