Discrimination of Rhizobium japonicum, Rhizobium lupini, Rhizobium trifolii, Rhizobium leguminosarum and of bacteriods by uptake of 2-ketoglutaric acid, glutamic acid and phosphate

1976 ◽  
Vol 107 (3) ◽  
pp. 257-262 ◽  
Author(s):  
D. Werner ◽  
K. Bergh�user
Keyword(s):  
Glutamic Acid ◽  
Rhizobium Leguminosarum ◽  
Rhizobium Japonicum ◽  
Rhizobium Trifolii ◽  
Rhizobium Lupini

Typing of Rhizobium by phages

1970 ◽  
Vol 16 (10) ◽  
pp. 1003-1009 ◽  
Author(s):  
Ryszard Staniewski
Keyword(s):  
Rhizobium Leguminosarum ◽  
Rhizobium Meliloti ◽  
Rhizobium Trifolii ◽  
Rhizobium Phaseoli ◽  
Group Iii ◽  
Phage Types ◽  
Group I ◽  
Rhizobium Lupini ◽  
Distinguished Group ◽  
Established Group

Two hundred and thirty strains of Rhizobium trifolii, Rhizobium leguminosarum for pea, vetch, horse bean, and Lathyrus spp., Rhizobium phaseoli and Rhizobium meliloti were subjected to phage typing. On the basis of their sensitivity to phages these strains were divided into three groups: I, II, and III.In group I, consisting of R. trifolii, R. leguminosarum for pea, vetch, and horse bean, and R. phaseoli, 18 phage types were established. Group II included some strains of R. trifolii and R. leguminosarum for pea and vetch. Among them three phage types were distinguished. Group III included R. meliloti strains and one strain of Rhizobium lupini for lupine. In that group 10 phage types were found.

FUNGI ASSOCIATED WITH LEGUME ROOT NODULES AND THEIR EFFECT ON RHIZOBIA

1966 ◽  
Vol 12 (6) ◽  
pp. 1253-1261 ◽  
Author(s):  
P. K. Chhonkar ◽  
N. S. Subba-Rao
Keyword(s):  
Rhizobium Leguminosarum ◽  
Rhizobium Meliloti ◽  
Root Nodules ◽  
Antibiotic Activity ◽  
Rhizobium Japonicum ◽  
Trifolium Alexandrinum ◽  
Rhizobium Trifolii ◽  
Rhizobium Phaseoli ◽  
Fresh Weight ◽  
Rhizobium Sp

Fungi associated with the nodules of nine common legumes were isolated and identified. The nodules had a mycoflora consisting of Cephalosporium, Alternaria, Aspergillus, Penicillium, Rhizopus, Acrothecium, Fusarium, Rhizoctonia, Curvularia, Pythium, and Trichoderma. Mycoflora of nodules of Trifolium alexandrinum was also analyzed in relation to the age of the plant and the volume of nodules. The fungi were screened for antibiotic activity towards six species of rhizobia. The results showed that Rhizobium trifolii, Rhizobium phaseoli, Rhizobium leguminosarum, and Rhizobium japonicum were relatively more susceptible to fungal antibiotics than either Rhizobium meliloti or Rhizobium sp. (cowpea group). Mycocolonization in soil by an isolate of Cephalosporium sp. significantly reduced the fresh weight and nitrogen status of T. alexandrinum.

scholarly journals Location of Nitrogenase and Ammonia-assimilatory Enzymes in Bacteroids of Rhizobium leguminosarum and Rhizobium lupini

1977 ◽  
Vol 102 (1) ◽  
pp. 95-104 ◽  
Author(s):  
K. Planque ◽  
I. R. Kennedy ◽  
G. E. de Vries ◽  
A. Quispel ◽  
A. A. N. van Brussel
Keyword(s):  
Rhizobium Leguminosarum ◽  
Rhizobium Lupini

Nitrate reductase activities of rhizobia and the correlation between nitrate reduction and nitrogen fixation

1979 ◽  
Vol 25 (10) ◽  
pp. 1169-1174 ◽  
Author(s):  
James R. Manhart ◽  
Peter P. Wong
Keyword(s):  
Nitrogen Fixation ◽  
Nitrate Reductase ◽  
Nitrate Reduction ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Root Nodules ◽  
Sole Source ◽  
Rhizobium Japonicum ◽  
Rhizobium Trifolii ◽  
Rhizobium Species

All species of Rhizobium except R. lupini had nitrate reductase activity. Only R. lupini was incapable of growth with nitrate as the sole source of nitrogen. However, the conditions necessary for the induction of nitrate reductase varied among species of Rhizobium. Rhizobium japonicum and some Rhizobium species of the cowpea strains expressed nitrate reductase activities both in the root nodules of appropriate leguminous hosts and when grown in the presence of nitrate. Rhizobium trifolii, R. phaseoli, and R. legnminosarum did not express nitrate reductase activities in the root nodules, but they did express them when grown in the presence of nitrate. In bacteroids of R. japonicum and some strains of cowpea Rhizobium, high N2 fixation activities were accompanied by high nitrate reductase activities. In bacteroids of R. trifolii, R. leguminosarum, and R. phaseoli, high N2 fixation activities were not accompanied by high nitrate reductase activities.

Repression of Small bacteriocin excretion in Rhizobium leguminosarum and Rhizobium trifolii by transmissible plasmids

1983 ◽  
Vol 192 (1-2) ◽  
pp. 171-176 ◽  
Author(s):  
C. A. Wijffelman ◽  
E. Pees ◽  
A. A. N. van Brussel ◽  
P. J. J. Hooykaas
Keyword(s):  
Rhizobium Leguminosarum ◽  
Rhizobium Trifolii

Growth rates of Rhizobium trifolii and Rhizobium lupini in sterilized soils

1968 ◽  
Vol 19 (6) ◽  
pp. 919 ◽  
Author(s):  
M/S Chowdhury ◽  
KC Marshall ◽  
CA Parker
Keyword(s):  
Sandy Soil ◽  
Growth Rates ◽  
Host Plants ◽  
Sandy Loam ◽  
Growth Characteristics ◽  
Rhizobium Trifolii ◽  
Optimum Temperature ◽  
Different Temperatures ◽  
Rhizobium Lupini

The growth characteristics of Rhizobium trifolii and R. lupini in a sterilized infertile sandy soil were studied at different temperatures. R. trifolii grew at a faster rate than R. lupini at all temperatures up to 30°C. The optimum temperature for growth for both species was found to be approximately 30°. Temperatures higher than 35° were found to be lethal for both species, the cells of R. trifolii being the more sensitive. In a fertile sandy loam the growth rates of both species were improved, the effect being more pronounced with R. lupini. The presence of the appropriate host plants in the sterilized infertile sand resulted in faster growth rates in both species, particularly R. lupini.

Sign in / Sign up

Export Citation Format

Share Document