Rhizobium meliloti nodAand nodBgenes are involved in generating compounds that stimulate mitosis of plant cells

Autor: Schmidt, Jürgen, Wingender, Ruth, John, Michael, Wieneke, Ursula, Schell, Jeff
Zdroj: Proceedings of the National Academy of Sciences of the United States of America; November 1988, Vol. 85 Issue: 22 p8578-8582, 5p
Abstrakt: The nodBgene of Rhizobium melilotiencodes a 23.8-kDa protein that is conserved in several Rhizobiumspecies. Monospecific polyclonal antibodies against NodB were used to localize this protein in the cytosol of R. melilotiand Escherichia colicells containing nodABCgenes. In comparison to the NodA and NodC proteins, NodB is synthesized in a disproportionately low amount. The NodA and NodB proteins are involved in generating small, heat-stable compounds that stimulate the mitosis of various plant protoplasts. Our experiments suggest that NodC is not involved in the synthesis of the factors. On the basis of their properties, we speculate that the factors are cytokinin-like substances.
Databáze: Supplemental Index