Abstract: A method for controlling expression of a nuclear-encoded gene in a plant comprising expressing a chloroplast-encoded dsRNA that silences an endogenous nuclear-encoded gene in the plant to produce a transformed plant line expressing the selected trait.

Abstract: A method for controlling expression of a nuclear-encoded gene in a plant comprising expressing a chloroplast-encoded dsRNA that silences an endogenous nuclear-encoded gene in the plant to produce a transformed plant line expressing the selected trait.

Abstract: The disclosure provides a method of expressing an agronomically beneficial trait in a plant plastid comprising expressing an exogenous nucleic acid in the plant to produce non-photosynthetic mutant plants, and using callus grown from the mutant plants as recipients for introduction of a construct having a functional copy of the mutated gene and a gene conferring an agronomically beneficial trait. Embodiments provide for mutations in chloroplast-encoded genes, as well as mutations in nuclear-encoded genes targeted to the chloroplast that are required for photosynthesis. The disclosure also provides plants and plant parts produced from such methods, as well as kits for performing the methods as described.

Abstract: A method of expressing an agronomically or non-agronomically beneficial trait in a plant plastid comprising expressing an exogenous nucleic acid in the plant to produce non-photosynthetic mutant plants, and using callus grown from the mutant plants as recipients for introduction of a construct having a functional copy of the mutated gene and a gene conferring an agronomically or non-agronomically beneficial trait. Embodiments provide for mutations in chloroplast-encoded genes, as well as mutations in nuclear-encoded genes targeted to the chloroplast that are required for photosynthesis, plants and plant parts produced from such methods, as well as kits for performing the methods as described.

Abstract: Novel compositions and methods useful for genetic engineering of plant cells to provide a method of producing plastid transformed plants are provided in the instant invention. In particular, the present invention provides methods for obtaining plastid transformed plants on medium containing plastid lethal compounds.

Abstract: This invention discloses recombinant DNA constructs that transcribe to RNA having improved resistance to a plant RNase III enzyme, and methods for their use in making transgenic plant cells, plants, seeds, and products derived therefrom. Also provided are compositions and methods for imparting to a plant resistance to a pest or pathogen of the plant.

Abstract: Constructs and methods are provided for expressing peptides derived from eukaryotic organisms in plant plastids. Constructs have a promoter functional in a plant plastid, a DNA sequence encoding a peptide derived from an eukaryotic organism and a transcription termination region. Other elements include a selectable marker for selection of plant cells comprising a plastid expressing the marker and DNA regions of homology to the genome of the plastid and optionally a ribosome binding site joined to the promoter. By methods using such constructs high levels of eukaryotic peptides, such as mammalian proteins, are produced in a plant cell by growing plant cells under conditions whereby the DNA encoding sequences are expressed to produce eukaryotic peptide in said plastid.

Abstract: Novel compositions and methods useful for genetic engineering of plant cells are provided. In particular, plastid constructs comprising recombining sites are provided. Such constructs find use in methods for site specific recombination in plant cell plastids. Plant cells and plants comprising the constructs described herein, as well as plant cells and plants produced by the methods of the present invention are of interest.

Abstract: A method for improved plastid transformation efficiency via homologous recombination and nucleic acid sequences useful therefore is provided. Nucleic acid sequences comprising a 5 base pair recombination sequence motif or multiple direct repeats thereof that increase the frequency of integration of a selected transgene through plastid transformation by homologous recombination are provided.

Abstract: Novel compositions and methods useful for genetic engineering of plant cells to provide a method of producing plastid transformed plants are provided in the instant invention. In particular, the present invention provides methods for obtaining plastid transformed plants on medium containing plastid lethal compounds.