Abstract
Male fertility was restored to genetically engineered male sterile oilseed rape plants. Male sterile plants that express a chimaeric ribonuclease gene in the anther tapetal cell layer were crossed with male fertile plants that were transformed with a chimaeric tapetal-cell-specific ribonuclease-inhibitor gene. F1 progeny expressing both genes are restored to male fertility by the suppression of cytotoxic ribonuclease activity in the anther by the formation of cell-specific RNase/RNase inhibitor complexes. Genetically engineered male sterility and fertility restorer genes should facilitate hybrid seed production in crop plants.
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Mariani, C., Gossele, V., Beuckeleer, M. et al. A chimaeric ribonuclease-inhibitor gene restores fertility to male sterile plants. Nature 357, 384–387 (1992). https://doi.org/10.1038/357384a0
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DOI: https://doi.org/10.1038/357384a0
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