ZESZYT Nr 2 / 2010 Abstrakty Volume No. 2/2010 Abstracts |
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| 9.Diversity in symbiotic
specificity of bacterial strains nodulating lupins in Poland - Krzysztof Pudełko, Joanna Żarnicka Abstract. Bacteria isolated from root nodules of yellow lupin (Lupinus luteus), white lupin (L. albus), and blue lupin (L. angustifolius) were analyzed for their symbiotic specifi city. Although these plant species belong to the same cross-inoculation group, they are not always nodulated by the same bacterial strains. There is a certain level of species and cultivar nodulation specifi city among analyzed bacterial population. This characteristic is particularly expressed in bacterial populations isolated from white lupin. Serradella (Ornithopus sativus) can be nodulated by several analyzed strains of bacteria of both types (fast and slow growing) from root nodules of lupins, but many strains did not induce nodules on serradella roots, or nodules were not effective. Birdsfoot trefoil (Lotus corniculatus) is also classifi ed in the same cross-inoculation group with lupins and serradella. Although the analyzed bacterial population has some potential for creating symbiotic systems with L. corniculatus, it is not a common phenomenon among lupin microsymbionts and is rather due to a large heterogeneity of the population. key words: lupin, rhizobia, nodulation, symbiosis, serradella |