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Symbiotic and competitive properties of motility mutants of Rhizobium trifolii TA1
Journal article   Peer reviewed

Symbiotic and competitive properties of motility mutants of Rhizobium trifolii TA1

H.Y. Mellor, A.R. Glenn, R. Arwas and M.J. Dilworth
Archives of Microbiology, Vol.148(1), pp.34-39
1987
DOI: https://doi.org/10.1007/BF00429644
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Abstract

Non-motile mutants of Rhizobium trifolii defective in either flagellar synthesis or function were isolated by transposon Tn5 mutagenesis. they were indistinguishable from motile control strains in growth in both laboratory media and in the rhizosphere of clover roots. When each non-motile mutant was grown together with a motile strain in continuous culture, the numbers of motile and non-motile organisms remained in constant proportion, implying that their growth rates were essentially identical. When inoculated separately onto clover roots, the mutants and wildtype did not differ significantly in the number of nodules produced or in nitrogen fixing activity. However, when mixtures of equal numbers of mutant and wild-type cells were inoculated onto clover roots, the motile strain formed approximately five times more nodules than the flagellate or non-flagellate, non-motile mutants, suggesting that motility is a factor in competition for nodule formation.

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Source: InCites

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Citation topics
3 Agriculture, Environment & Ecology
3.97 Plant Pathology
3.97.892 Rhizobium-Legume Symbiosis
Web Of Science research areas
Microbiology
ESI research areas
Microbiology
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