Abstract
Abstract Caldwell and Vest (1968) planted soybeans (Glycine max L. Merr.) with various genotypes at Beltsville, USA, without inoculating them with Bradyrhizobium japonicum, and showed that soybeans preferred certain serotypes of rhizobial strains for nodulation. Recently, the authors have reported that soybeans carrying nodulation-conditioning genes preferred appropriate strains showing specific behavior for nodulation (Ishizuka et al. 1991). For instance, nodulation of soybean cv. Hardee which carries the nodulation-conditioning genes, Rj 2 and Rj 3, does not occur with B. japonicum USDA122, USDA33, Is-1, etc. Nodulation of cv. Hill which carries the Rj 4 gene, does not occur with B. japonicum USDA61, Is-21, etc. while A62-2 which carries a recessive gene rj 1, does not nodulate with almost any of the strains of B. japonicum. Therefore, the B. japonicum strains can be classified into three nodulation types based on the compatibility with these Rj-cultivars, that is, type A strains which effectively nodulated both Rj 2 Rj 3-cultivars and Rj 4-ones, type B strains which did not nodulate the Rj 2 Rj 3-cultivars and type C strains which did not nodulate the Rj 4-cultivars. When the nodulation types of the isolates from nodules of field-grown soybeans were examined, it was suggested that the Rj 2 Rj 3-cultivars and Rj 4-cultivars preferred the type C and type B strains, respectively (Ishizuka et al. 1991).
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Claims 7
Claim · model-written summary
Soybeans carrying nodulation-conditioning genes preferred appropriate B. japonicum strains showing specific behavior for nodulation.
- Taxon
- soybeans
Glycine maxe0 - Interactor
- Bradyrhizobium japonicum
Bradyrhizobium japonicumt0symbiont - Gene
- nodulation-conditioning genese0
- Outcome
- preferred appropriate strainse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybeans carrying nodulation-conditioning genes preferred appropriate strains showing specific behavior for nodulation”
t0“Bradyrhizobium japonicum”
Claim · model-written summary
Nodulation of soybean cv. Hardee, which carries Rj 2 and Rj 3, does not occur with B. japonicum USDA122, USDA33, Is-1 and others.
- Taxon
- soybeanGlycine maxe0
- Material
- Hardeee0
- Interactor
- B. japonicum USDA122, USDA33, Is-1e0symbiont
- Gene
- Rj 2 and Rj 3e0
- Outcome
- Nodulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nodulation of soybean cv. Hardee which carries the nodulation-conditioning genes, Rj 2 and Rj 3, does not occur with B. japonicum USDA122, USDA33, Is-1”
Claim · model-written summary
Nodulation of soybean cv. Hill, which carries the Rj 4 gene, does not occur with B. japonicum USDA61, Is-21 and others.
- Taxon
- SoybeanGlycine maxt0
- Material
- Hille0
- Interactor
- B. japonicum USDA61, Is-21e0symbiont
- Gene
- Rj 4e0
- Outcome
- Nodulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nodulation of cv. Hill which carries the Rj 4 gene, does not occur with B. japonicum USDA61, Is-21”
t0“Soybean”
Claim · model-written summary
Soybean A62-2, which carries a recessive gene rj 1, does not nodulate with almost any B. japonicum strain.
- Taxon
- SoybeanGlycine maxt0
- Material
- A62-2e0
- Interactor
- B. japonicumBradyrhizobium japonicume0symbiont
- Gene
- rj 1e0
- Outcome
- does not nodulatee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A62-2 which carries a recessive gene rj 1, does not nodulate with almost any of the strains of B. japonicum”
t0“Soybean”
Claim · model-written summary
B. japonicum strains can be classified into three nodulation types (A, B, C) according to their compatibility with Rj cultivars.
- Taxon
- SoybeanGlycine maxt0
- Interactor
- B. japonicumBradyrhizobium japonicume0symbiont
- Outcome
- three nodulation typese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the B. japonicum strains can be classified into three nodulation types based on the compatibility with these Rj-cultivars”
t0“Soybean”
Claim · model-written summary
Isolates from nodules of field-grown soybeans suggested that Rj 2 Rj 3-cultivars preferred type C strains.
- Taxon
- SoybeanGlycine maxt1
- Material
- Rj 2 Rj 3-cultivarse0
- Interactor
- Bradyrhizobium japonicumBradyrhizobium japonicumt0symbiont
- Outcome
- preferrede0
- Qualifier
- type Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was suggested that the Rj 2 Rj 3-cultivars and Rj 4-cultivars preferred the type C and type B strains, respectively”
t0“Bradyrhizobium japonicum”
t1“Soybean”
Claim · model-written summary
Isolates from nodules of field-grown soybeans suggested that Rj 4-cultivars preferred type B strains.
- Taxon
- SoybeanGlycine maxt1
- Material
- Rj 4-cultivarse0
- Interactor
- Bradyrhizobium japonicumBradyrhizobium japonicumt0symbiont
- Outcome
- preferrede0
- Qualifier
- type Be0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it was suggested that the Rj 2 Rj 3-cultivars and Rj 4-cultivars preferred the type C and type B strains, respectively”
t0“Bradyrhizobium japonicum”
t1“Soybean”