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

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.

Gel-forming capsular polysaccharide of Rhizobium leguminosarum and Rhizobium trifolii

1983 ◽  
Vol 124 (1) ◽  
pp. 166-171 ◽  
Author(s):  
Ludovicus P.T.M. Zevenhuizen ◽  
Alex R.W. van Neerven
Keyword(s):  
Rhizobium Leguminosarum ◽  
Capsular Polysaccharide ◽  
Rhizobium Trifolii

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.

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