Nodulation and Competition for Nodulation of Selected Soybean Genotypes among Bradyrhizobium japonicum Serogroup 123 Isolates
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منابع مشابه
The Soybean Rj4 Allele Restricts Nodulation by Bradyrhizobium japonicum Serogroup 123 Strains.
Of nine Bradyrhizobium japonicum serogroup 123 strains examined, 44% were found to be restricted for nodulation by cultivar Hill. Nodulation studies with soybean isoline BARC-2 confirmed that the soybean Rj4 allele restricts nodulation by the same serogroup 123 isolates. Immunological analyses indicated that B. japonicum strains in serogroups 123 and 31 share at least one surface somatic antigen.
متن کاملTranscription profiling of soybean nodulation by Bradyrhizobium japonicum.
Legumes interact with nodulating bacteria that convert atmospheric nitrogen into ammonia for plant use. This nitrogen fixation takes place within root nodules that form after infection of root hairs by compatible rhizobia. Using cDNA microarrays, we monitored gene expression in soybean (Glycine max) inoculated with the nodulating bacterium Bradyrhizobium japonicum 4, 8, and 16 days after inocul...
متن کاملChemical control of interstrain competition for soybean nodulation by Bradyrhizobium japonicum.
Previous research has shown that a significant limitation to the agricultural use of improved rhizobial inoculant strains is competition from the indigenous soil population. In this work, we sought to test whether chemical inhibitors of flavonoid-induced nod gene expression in Bradyrhizobium japonicum could be identified and utilized to affect interstrain competition for nodulation of soybeans....
متن کاملNodulation gene regulation and quorum sensing control density-dependent suppression and restriction of nodulation in the Bradyrhizobium japonicum-soybean symbiosis.
The nodulation of Glycine max cv. Lambert and the nodulation-restricting plant introduction (PI) genotype PI 417566 by wild-type Bradyrhizobium japonicum USDA110 is regulated in a population-density-dependent manner. Nodulation on both plant genotypes was suppressed (inhibited) when plants received a high-density inoculum (10(9) cells/ml) of strain USDA110 grown in complex medium, and more nodu...
متن کاملHost Plant Effects on Nodulation and Competitiveness of the Bradyrhizobium japonicum Serotype Strains Constituting Serocluster 123.
Strains in Bradyrhizobium japonicum serocluster 123 are the major indigenous competitors for nodulation in a large portion of the soybean production area of the United States. Serocluster 123 is defined by the serotype strains USDA 123, USDA 127, and USDA 129. The objective of the work reported here was to evaluate the ability of two soybean genotypes, PI 377578 and PI 417566, to restrict the n...
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ژورنال
عنوان ژورنال: Applied and Environmental Microbiology
سال: 1987
ISSN: 0099-2240,1098-5336
DOI: 10.1128/aem.53.11.2631-2635.1987