Materials and methods are provided for making plants (e.g., soybean varieties, wheat varieties, or corn varieties) with altered amino acid content. For example, materials and methods are provided for making TALE nuclease-induced mutations in genes encoding seed storage proteins, or by making TALE nuclease-induced deletions of within seed storage protein genes.

The present disclosure provides methods for preparing ?-substituted tryptophan compounds. The methods include: combining i) an unsubstituted indole or a substituted indole, ii) a ?-substituted serine, and iii) a tryptophan synthase ?-subunit (i.e., a TrpB); and maintaining the resulting mixture under conditions sufficient to form the ?-substituted tryptophan. The TrpB contains at least one amino acid mutation which promotes formation of an amino-acrylate intermediate. New TrpB variants and new ?-substituted tryptophan analogs are also described.

The present disclosure provides methods for preparing ?-substituted tryptophan compounds. The methods include: combining i) an unsubstituted indole or a substituted indole, ii) a ?-substituted serine, and iii) a tryptophan synthase ?-subunit (i.e., a TrpB); and maintaining the resulting mixture under conditions sufficient to form the ?-substituted tryptophan. The TrpB contains at least one amino acid mutation which promotes formation of an amino-acrylate intermediate. New TrpB variants and new ?-substituted tryptophan analogs are also described.

The invention provides plants having desirable levels of sugar release and/or lignin synthesis. The invention further provides methods of selecting plants with such desirable levels of sugar release and/or lignin synthesis; methods of genetically modifying plants to modulate lignin synthesis, sugar release, and modulating phenylalanine, tyrosine, tryptophan and flavonoid production; and uses of such plants.

Provided herein are genome edited plants and plant parts that comprise increased amino acid content. In particular, the amino acids include tryptophan (Trp) and methionine (Met). Seed of the genome edited plants and plant parts can comprise increased Trp and/or Met. The genome edited plants and plant parts have genetic mutations in an anthranilate synthase gene including a gene encoding an alpha subunit of anthranilate synthase and/or a homocysteine S-methyltransferase gene. The genome edited plants and plant parts include soybean and pea. Also provided herein are compositions and methods of producing such plants and plant parts, and plant products including compositions comprising increased Trp and/or Met content.

Anti-sense-oriented RNA gene suppression agents in the form of a loop of anti-sense-oriented RNA is produced in cells of transgenic organisms, e.g. plants, by transcription from a recombinant DNA construct that comprises in 5 to 3 order a promoter element operably linked to more than one anti-sense-oriented DNA element and one or more complementary DNA elements.

This invention provides molecular constructs and methods for the temporally specific control of gene expression in plants or in plant pests or pathogens. More specifically, this invention provides plant miRNA genes having novel circadian expression patterns that are useful for designing recombinant DNA constructs for temporally specific expression of at least one gene. Also provided are non-natural transgenic plant cells, plants, and seeds containing in their genome a recombinant DNA construct of this invention.

This invention provides molecular constructs and methods for the temporally specific control of gene expression in plants or in plant pests or pathogens. More specifically, this invention provides plant miRNA genes having novel circadian expression patterns that are useful for designing recombinant DNA constructs for temporally specific expression of at least one gene. Also provided are non-natural transgenic plant cells, plants, and seeds containing in their genome a recombinant DNA construct of this invention.

Anti-sense-oriented RNA gene suppression agents in the form of a loop of anti-sense-oriented RNA is produced in cells of transgenic organisms, e.g. plants, by transcription from a recombinant DNA construct which comprises in 5 to 3 order a promoter element operably linked to an anti-sense-oriented DNA element and a complementary DNA element.

The invention relates to methods for increasing total lysine content in plants and plant products and related uses.