Genetically engineered cytoplasmic male sterility |
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Authors: | Chase Christine D |
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Institution: | Horticultural Sciences Department, University of Florida Institute of Food and Agricultural Sciences, Gainesville, FL 32611-0690, USA. ctdc@ifas.ufl.edu |
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Abstract: | Cytoplasmic male sterility, conditioned by some maternally inherited plant mitochondrial genomes, is the most expedient method to produce uniform populations of pollen-sterile plants on a commercial scale. Plant mitochondrial genomes are not currently amenable to genetic transformation, but genetic manipulation of the plastid genome allows engineering of maternally inherited traits in some species. A recent study has shown that the Acinetobacter beta-ketothiolase gene, expressed in the Nicotiana tabacum plastid, conditions maternally inherited male sterility, laying the groundwork for new approaches to control pollen fertility in crop plants. |
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