A novel maize variety designated PH2RK6 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2RK6 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2RK6 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH2RK6 or a locus conversion of PH2RK6 with another maize variety.

A novel soybean variety, designated XB07AC15 is provided. Also provided are the seeds of soybean variety XB07AC15, cells from soybean variety XB07AC15, plants of soybean XB07AC15, and plant parts of soybean variety XB07AC15. Methods provided include producing a soybean plant by crossing soybean variety XB07AC15 with another soybean plant, methods for introgressing a transgenic trait, a mutant trait, and/or a native trait into soybean variety XB07AC15, methods for producing other soybean varieties or plant parts derived from soybean variety XB07AC15, and methods of characterizing soybean variety XB07AC15. Soybean seed, cells, plants, germplasm, breeding lines, varieties, and plant parts produced by these methods and/or derived from soybean variety XB07AC15 are further provided.

A novel soybean variety, designated XB46V15R is provided. Also provided are the seeds of soybean variety XB46V15R, cells from soybean variety XB46V15R, plants of soybean XB46V15R, and plant parts of soybean variety XB46V15R. Methods provided include producing a soybean plant by crossing soybean variety XB46V15R with another soybean plant, methods for introgressing a transgenic trait, a mutant trait, and/or a native trait into soybean variety XB46V15R, methods for producing other soybean varieties or plant parts derived from soybean variety XB46V15R, and methods of characterizing soybean variety XB46V15R. Soybean seed, cells, plants, germplasm, breeding lines, varieties, and plant parts produced by these methods and/or derived from soybean variety XB46V15R are further provided.

Compositions and methods for reducing the level of nornicotine and N′-nitrosonornicotine (NNN) in tobacco plants and plant parts thereof are provided. The compositions comprise isolated polynucleotides and polypeptides for a root-specific nicotine demethylases, CYP82E10, and variants thereof, that are involved in the metabolic conversion of nicotine to nornicotine in these plants. Compositions of the invention also include tobacco plants, or plant parts thereof, comprising a mutation in a gene encoding a CYP82E10 nicotine demethylase, wherein the mutation results in reduced expression or function of the CYP82E10 nicotine demethylase. Seed of these tobacco plants, or progeny thereof, and tobacco products prepared from the tobacco plants of the invention, or from plant parts or progeny thereof, are also provided. Methods for reducing the level of nornicotine, or reducing the rate of conversion of nicotine to nornicotine, in a tobacco plant, or plant part thereof are also provided. The methods comprise introducing into the genome of a tobacco plant a mutation within at least one allele of each of at least three nicotine demethylase genes, wherein the mutation reduces expression of the nicotine demethylase gene, and wherein a first of these nicotine demethylase genes encodes a root-specific nicotine demethylase involved in the metabolic conversion of nicotine to nornicotine in a tobacco plant or a plant part thereof. The methods find use in the production of tobacco products that have reduced levels of nornicotine and its carcinogenic metabolite, NNN, and thus reduced carcinogenic potential for individuals consuming these tobacco products or exposed to secondary smoke derived from these products.

The present disclosure discloses an artificial combined rhizosphere nitrogen fixation system, including a recombinant nitrogen-fixing engineering bacterium that is transformed with genes for encoding a nitrogen fixation activator Neb and an ammonium transporter amtR, and a recombinant plant that is transformed with a gene for encoding an ammonium-affiliated protein Ham. The coupling of the functions of the above two is achieved through a seed-coated inoculation at a rhizosphere of a crop.

The present disclosure provides compositions and methods related to tobacco plants with altered total alkaloid and nicotine levels and commercially acceptable leaf grade, their development via breeding or transgenic approaches, and production of tobacco products from these tobacco plants.

The present invention relates to resveratrol-enriched transgenic rice for biosynthesizing resveratrol at high concentration, in which resveratrol synthase genes are expressibly inserted into the 12.sup.th chromosome of natural rice, and seed of rice produced therefrom. Further, the present invention relates to a health functional food composition, an animal feed composition, and a pharmaceutical composition for preventing and improving a metabolic disease, including seed of rice produced from the resveratrol-enriched transgenic rice for biosynthesizing resveratrol, in which resveratrol synthase genes are expressibly inserted into the 12.sup.th chromosome of natural rice. The seed of rice produced from resveratrol-enriched transgenic rice into which resveratrol synthase genes are inserted, containing high a concentration of resveratrol of the present invention exhibits remarkably superior effects compared to when the same amount of resveratrol is simply ingested. Further, since rice is produced in the form to be used directly as food without an additional process of separating or extracting resveratrol, it may be widely used as food, feed, and medical supplies for preventing and improving a metabolic disease.

The present invention relates to the production of steviol glycoside rebaudiosides D4, WB1 and WB2 and the production of rebaudioside M from Reb D4.

A novel maize variety designated PH2T5B and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2T5B with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2T5B through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH2T5B or a locus conversion of PH2T5B with another maize variety.

According to the invention, there is provided barley-derived beverages characterized by notably reduced levels of both dimethyl sulfide (DMS) and/or its precursor S-methyl-L-methionine (SMM), or lacking said compounds. In addition, the invention relates to methods for producing the above-mentioned beverages—and also to barley plants useful in the preparation of such beverages, as well as other plant products prepared from said plants. Utilization of the invention clears the way for making improved production procedures of beverages with improved taste profiles, and promises also for notable reductions in the thermal energy input for production of beer.