Abstract: System, including methods and compositions, for making and using transgenic plants capable of metabolizing phosphite to reduce competition from weeds. The plants may be transgenically modified to express a phosphite dehydrogenase enzyme capable of catalyzing oxidation of phosphite to phosphate and grown in the presence of sufficient phosphite to selectively promote growth of the plant relative to weeds near the plant.

Abstract: Methods of generating transgenic plants containing a gene of interest and a selectable marker encoding an enzyme that catalyzes oxidation of phosphite to phosphate.

Abstract: System, including methods compositions, and kits, for controlling the growth of fungi and other pathogens in plants using at least one alkamide, which may function by increasing or eliciting natural defense mechanisms of the plants against such pathogens.

Abstract: A plant cultivation system, including methods, apparatus, plants, and compositions, for utilizing phosphite as a nutrient to support growth of a transgenic plant and as a control agent for unwanted organisms, such as weeds and/or algae, among others. In an exemplary method, an effective amount of phosphite is applied to a substrate, and/or to foliage above the substrate, to enhance growth of a transgenic plant and/or to act as a weed-control agent that kills weeds and/or directly suppresses growth of weeds near the transgenic plant. In another exemplary method, soil is tested for a content of phosphate, and an effective amount of phosphite for supporting growth of a transgenic plant and controlling weeds is selected and applied based on the content of phosphate. In yet another exemplary method, phosphite is used to control algae in a hydroponic system.

Abstract: System, including methods compositions, and kits, for controlling the growth of fungi and other pathogens in plants using at least one alkamide, which may function by increasing or eliciting natural defense mechanisms of the plants against such pathogens.

Abstract: System, including methods and compositions, for making and using transgenic plants capable of metabolizing phosphite to reduce competition from weeds.

Abstract: System, including methods and compositions, for making and using photosynthetic organisms and cells that are adapted transgenically to metabolize phosphite as a source of phosphorus for supporting growth.

Abstract: System, including methods and compositions, for making and using fungi that are adapted transgenically to metabolize phosphite as a source of phosphorus for supporting growth.

Abstract: System, including methods and compositions, for making and using transgenic plants and/or transgenic fungi that metabolize phosphite as a source of phosphorus for supporting growth.

Abstract: System, including methods compositions, and kits, for controlling the growth of fungi and other pathogens in plants using at least one alkamide, which may function by increasing or eliciting natural defense mechanisms of the plants against such pathogens.