Cytofluorometrical Determination of the DNA Contents of Bacteroids and Corresponding Broth-cultured Rhizobium Bacteria

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Abstract
DNA contents of different, broth-cultured Rhizobium spp. and bacteroids from [pea] root nodules were determined by cytofluorometry. In almost all species bacteroids appeared to contain more DNA than the corresponding bacteria. A correlation was found between the DNA content and size of the bacteroid, the latter being influenced by the host plant.