Soybean preference for Bradyrhizobium japonicum for nodulation: Nodulation by Rj2Rj3Rj4-Genotypes isolated from the progenies of a cross between soybean Cvs. IAC-2 (Rj2Rj3) and Hill (Rj4)

Takeo Yamakawa, Masaharu Eriguchi, A. K.M.Anuwar Hussain, Junji Ishizuka

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

For the increase of the occupation ratio of inoculum strain in the competition with indigenous rhizobia, the relationship between Rj-genotypes of soybean and the preference of Rj-cultivars for various types of rhizobia for nodulation was investigated by using the Rj2 Rj4-genotype of soybean isolated from the cross between the Rj2 Rj3-cultivar IAC-2 and Rj4-one Hill (Ishizuka et al. 1993: Soil Sci. Plant Nutr., 39, 79-86). Firstly, these Rj2 Rj4-genotypes were found to harbor the Rj3-gene. The Rj2Rj3Rj4-genotypes of soybean were considered to exhibit a more narrow microsymbiont range for nodulation than the Rj2 Rj3-and Rj4-cultivars. Therefore, rhizobia were isolated from the nodules of various Rj-genotypes of soybeans grown in soils, and the preference of the Rj2 Rj3 Rj4-genotype for indigenous rhizobia was examined. The nodule occupancy of serotype 110 was significantly higher in the bacteroids of the nodules from the Rj2 Rj3 Rj4-rgenotypes than in those from the other genotypes, non Rj-, Rj2 Rj3™, and Rj4-cultivars. These results demonstrated that the Rj2 Rj3 Rj4-genotype prefers more actively serogroup USDA110 to the others of rhizobia. Thus, Rj2 Rj3 Rj4-genotype is superior to non- Rj-, Rj2 Rj3-, and Rj4-genotypes for the formation of efficient nodules for nitrogen fixation.

Original languageEnglish
Pages (from-to)461-469
Number of pages9
JournalSoil Science and Plant Nutrition
Volume45
Issue number2
DOIs
Publication statusPublished - Jan 1 1999

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Bradyrhizobium japonicum
nodulation
soybean
genotype
soybeans
rhizobacterium
Rhizobium
cultivar
cultivars
serotypes
microsymbionts
nitrogen fixation
occupation
soil
inoculum
harbor

All Science Journal Classification (ASJC) codes

  • Soil Science
  • Plant Science

Cite this

Soybean preference for Bradyrhizobium japonicum for nodulation : Nodulation by Rj2Rj3Rj4-Genotypes isolated from the progenies of a cross between soybean Cvs. IAC-2 (Rj2Rj3) and Hill (Rj4). / Yamakawa, Takeo; Eriguchi, Masaharu; Hussain, A. K.M.Anuwar; Ishizuka, Junji.

In: Soil Science and Plant Nutrition, Vol. 45, No. 2, 01.01.1999, p. 461-469.

Research output: Contribution to journalArticle

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abstract = "For the increase of the occupation ratio of inoculum strain in the competition with indigenous rhizobia, the relationship between Rj-genotypes of soybean and the preference of Rj-cultivars for various types of rhizobia for nodulation was investigated by using the Rj2 Rj4-genotype of soybean isolated from the cross between the Rj2 Rj3-cultivar IAC-2 and Rj4-one Hill (Ishizuka et al. 1993: Soil Sci. Plant Nutr., 39, 79-86). Firstly, these Rj2 Rj4-genotypes were found to harbor the Rj3-gene. The Rj2Rj3Rj4-genotypes of soybean were considered to exhibit a more narrow microsymbiont range for nodulation than the Rj2 Rj3-and Rj4-cultivars. Therefore, rhizobia were isolated from the nodules of various Rj-genotypes of soybeans grown in soils, and the preference of the Rj2 Rj3 Rj4-genotype for indigenous rhizobia was examined. The nodule occupancy of serotype 110 was significantly higher in the bacteroids of the nodules from the Rj2 Rj3 Rj4-rgenotypes than in those from the other genotypes, non Rj-, Rj2 Rj3™, and Rj4-cultivars. These results demonstrated that the Rj2 Rj3 Rj4-genotype prefers more actively serogroup USDA110 to the others of rhizobia. Thus, Rj2 Rj3 Rj4-genotype is superior to non- Rj-, Rj2 Rj3-, and Rj4-genotypes for the formation of efficient nodules for nitrogen fixation.",
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