Co-evolution of the legume-Rhizobium association |
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Authors: | T A Lie D Göktan M Engin J Pijnenborg E Anlarsal |
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Institution: | (1) Department Microbiology, Agricultural University, Wageningen, The Netherlands;(2) Present address: Engineering Faculty, Ege University, Izmir, Turkey;(3) Present address: Agricultural Faculty, Cukurova University, Adana, Turkey |
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Abstract: | Summary A number of examples is given demonstrating the co-existence of pea genotypes and their specific Rhizobium, strains isolated
within the same region.R. leguminosarum strains compatible with the cultivated pea have a narrow symbiotic range and they are widely distributed in European soils.
This is presumably due to the narrow genetic base of the cultivated pea and its wide-spread cultivation in European soils.
Rhizobium strains capable of nodulating a primitive pea line from Afghanistan were only found in soils of the Middle East
and Central Asia. A more restricted distribution of specific Rhizobium strains was found for fulvum peas from Israel. Rhizobium
strains effective with the fulvum pea were found in Israeli soils. A good example of co-evolution due to geographical isolation
was found in south Turkey. Here a pea line was found which can form an effective symbiosis with local Rhizobium strains but
not with strains from other parts of Turkey. |
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Keywords: | Co-evolution Gene pool Nitrogen fixation Pisum sativum L Rhizobium leguminosarum |
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