Abstract: The invention provides GmNFR1?, GmNFR1?, GmNFR5?, and GmNFR5? soybean nodulation factor receptor proteins, a receptor complex, and encoding nucleic acids. Also provided are GmNFR1?, GmNFR1?, GmNFR5?, and GmNFR5? promoters, which may be useful for expressing autologous or heterologous sequences in plants, such as soybean. Variant proteins and nucleic acids including RNA splice variants, mis-sense mutants, and non-sense mutants are also described. Also provided are genetically-modified plants and methods of producing genetically-modified plants. Over-expression of soybean nodulation factor receptor proteins by genetically-modified plants may lead to enhanced and/or otherwise facilitated nodulation and/or nitrogen fixation. Genetically-modified plants with down-regulated nodulation factor receptor expression, such as by RNAi or antisense constructs, may exhibit inhibited, diminished, or otherwise reduced nodulation and/or nitrogen fixation.

Abstract: The invention provides GmNFR1?, GmNFR1?, GmNFR5? and GmNFR5? soybean nodulation factor receptor proteins, a receptor complex and encoding nucleic acids. Also provided are GmNFR1?, GmNFR1?, GmNFR5? and GmNFR5? promoters which may be useful for expressing autologous or heterologous sequences in plants such as soybean. Variant proteins and nucleic acids including RNA splice variants, mis-sense mutants and non-sense mutants are also described. Also provided are genetically-modified plants and methods of producing genetically-modified plants. Over-expression of soybean nodulation factor receptor proteins by genetically-modified plants may lead to enhanced and/or otherwise facilitated nodulation and/or nitrogen fixation. Genetically-modified plants with down-regulated nodulation factor receptor expression, such as by RNAi or antisense constructs, may exhibit inhibited, diminished or otherwise reduced nodulation and/or nitrogen fixation.