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Comparison of the host range of fast-growingR. japonicum strains with a fast-growing isolate from Lablab (1986)

Morrison, N. A. ; Trinick, M. J. ; Rolfe, B. G.

Springer

Plant and soil 92 (1986), S. 313-317

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ISSN: 1573-5036

Keywords: Fast-growingGlycine max ; Host range ; Lablab ; Nodulation ; Rhizobium japonicum ; Slow-growing ; Tropical legumes

Source: Springer Online Journal Archives 1860-2000

Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Notes: Summary Fast-growingRhizobium japnicum strains derived from the People's Republic of China were compared with a fast-growingRhizobium isolate from Lablab for their ability to nodulate tropical legumes grown in Leonard-jars and test tube culture. Fast-growingR. japonicum strains were all effective to varying degrees in their symbiosis withVigna unguiculata. Two strains USDA 192 and USDA 201, effectively nodulatedGlycine whightii and one strain, USDA 193, effectively nodulatedMacroptilium atropurpureum. Other nodulation responses in tropical legumes were ineffective. The fast-growing isolate from Lablab was more promiscuous, effectively nodulating with a larger host range. The fast-growing Lablab strain was considered more akin, on a symbiotic basis, to the slow-growing cowpea type rhizobia than the fast-growing China strains ofR. japonicum whilst maintaining physiological characteristics of other fast-growing rhizobia.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02372646

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Expression of the 2,4-D degrading plasmid pJP4 of Alcaligenes eutrophus in Rhizobium trifolii (1994)

Feng, L. ; Van Zwieten, L. ; Kennedy, I. R. ; [et al.]

Berlin : Wiley-Blackwell

Acta Biotechnologica 14 (1994), S. 119-129

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ISSN: 0138-4988

Keywords: Life Sciences ; Life Sciences (general)

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Process Engineering, Biotechnology, Nutrition Technology

Notes: The 2,4-dichlorophenoxy acetic acid (2,4-D) degrading plasmid, pJP4, was transferred into Rhizobium trifolii ANU843 from its nature host Alcaligenes eutrophus JMP134 by conjugation. The ability to degrade 2,4-D was expressed in the transconjugant ANU843p as shown by a total loss of UV-absorbent compounds and by gas chromatographic analysis. However, the transconjugant was unable to grow on 2,4-D alone. When the transconjugant strain ANU843p was inoculated onto white and subterranean clover plants in laboratory trials, the transconjugant retained the capacity of nodulation, but the nitrogen-fixation activity was diminished, particularly in the case of subterranean clover. The plasmid in the transconjugant was stable in nodules for at least nine weeks after inoculation and could be of value in applications requiring the protection or removal of the 2,4-D involving cometabolism with plant substrates.

Additional Material: 4 Ill.