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    Assessing host range, symbiotic effectiveness, and photosynthetic rates induced by native soybean rhizobia isolated from Mozambican and south African soils

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    Authors
    Gyogluu, C.
    Mohammed, M.
    Jaiswal, S.K.
    Boahen, S.
    Dakora, F.D.
    Date
    2017-11
    Language
    en
    Type
    Journal Article
    Accessibility
    Open Access
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    Citation
    Gyogluu, C., Mohammed, M., Jaiswal, Boahen, S. & Dakora, F. D. (2018). Assessing host range, symbiotic effectiveness, and photosynthetic rates induced by native soybean rhizobia isolated from Mozambican and south African soils. Symbiosis, 75, 257-266.
    Permanent link to cite or share this item: https://hdl.handle.net/10568/96111
    DOI: https://dx.doi.org/10.1007/s13199-017-0520-5
    Abstract/Description
    Host range and cross-infectivity studies are important for identifying rhizobial strains with potential for use as inoculants. In this study, 10 native soybean rhizobia isolated from Mozambican and South African soils were evaluated for host range, symbiotic effectiveness and ability to induce high rates of photosynthesis leading to enhanced plant growth in cowpea (Vigna unguiculata L. Walp.), Bambara groundnut (Vigna subterranean L. Verdc.), Kersting’s groundnut (Macrotyloma geocarpum Harm) and soybean (Glycine max L. Merr). The test isolates had different growth rates and colony sizes. Molecular analysis based on enterobacterial repetitive intergenic consensus (ERIC)-PCR revealed high genetic diversity among the test isolates. The results further showed that isolate TUTLBC2B failed to elicit nodulation in all test plants, just as TUTNSN2A and TUTDAIAP3B were also unable to nodulate cowpea, Kersting’s bean and Bambara groundnut. Although the remaining strains formed ineffective nodules on cowpea and Kersting’s bean, they induced effective nodules on Bambara groundnut and the two soybean genotypes. Bacterial stimulation of nodule numbers, nodule dry weights and photosynthetic rates was generally greater with isolates TUTRSRH3A, TUTM19373A, TUTMCJ7B, TUTRLR3B and TUTRJN5A. As a result, these isolates elicited significantly increased accumulation of biomass in shoots and whole plants of Bambara groundnut and the two soybean genotypes. Whole-plant symbiotic nitrogen (N) of soybean and Bambara groundnut was highest for the commercial strains CB756 and WB74, as well as for TUTRLR3B, TUTMCJ7B and TUTRSRH3A, suggesting that the three native rhizobial isolates have potential for use as inoculants.
    CGIAR Author ORCID iDs
    Stephen Boahen Asaberehttps://orcid.org/0000-0001-8946-401X
    Notes
    Article purchased
    CGIAR Affiliations
    Grain Legumes
    AGROVOC Keywords
    SEED GERMINATION; BAMBARA GROUNDNUT; NODULATION; NITROGEN FIXATION; STOMATAL; SOYBEANS; COWPEAS; GENOTYPES
    Subjects
    COWPEA; GRAIN LEGUMES; PLANT BREEDING; PLANT DISEASES; PLANT HEALTH; PLANT PRODUCTION; SOIL FERTILITY
    Countries
    MOZAMBIQUE; SOUTH AFRICA
    Regions
    AFRICA; SOUTHERN AFRICA
    Investors/sponsors
    Bill & Melinda Gates Foundation
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    • IITA Journal Articles [3015]

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