36 results about "Lignin biosynthesis" patented technology

The invention discloses a pear lignin synthesis gene PbMC1a/1b and application of the pear lignin synthesis gene PbMC1a/1b in genetic improvement of fruit quality. The PbMC1a/1b gene is a cysteine-like protease isolated and cloned from Dangshansu pear with high lignin content, an applicant names the gene as PbMC1a/1b, the sequence is shown as SEQ ID NO.1, and the corresponding amino acid sequenceis shown as SEQ ID NO.2. A gene construction over-expression vector is introduced into arabidopsis thaliana, obtained transgenic plants are verified by a biological function, the cloned PbMC1a/1b genecan promote the cell walls of fibers between ducts, lignocellulosic fibers and vascular bundles to be obviously thickened, lignin accumulation in stems is promoted and plant growth is inhibited, theexpression of genes related to lignin biosynthesis is increased, new genetic resources is provided for molecular design and breeding of fruit quality, and the PbMC1a/1b gene is an important candidategene for future genetic engineering to improve fruit quality breeding.

Polynucleotides encoding polypeptides that comprise the biosynthetic pathway for lignins in the coffee plant are disclosed. Also disclosed are methods for using these polynucleotides and polypeptides for the manipulation of flavor, aroma, and other features of coffee beans, as well as the manipulation resistance to pathogen, herbivore, and insect attack in the coffee plant.

This invention relates to an isolated nucleic acid fragment encoding a lignin biosynthetic enzyme. The invention also relates to the construction of a chimeric gene encoding all or a portion of the lignin biosynthetic enzyme, in sense or antisense orientation, wherein expression of the chimeric gene results in production of altered levels of the lignin biosynthetic enzyme in a transformed host cell.

The present invention relates to a novel DNA sequence, which encodes a previously unidentified lignin biosynthetic pathway enzyme, sinapyl alcohol dehydrogenase (SAD) that regulates the biosynthesis of syringyl lignin in plants. Also provided are methods for incorporating this novel SAD gene sequence or substantially similar sequences into a plant genome for genetic engineering of syringyl-enriched lignin in plants.

The present invention provides methods and compositions relating to altering lignin biosynthesis content and/or composition of plants. The invention provides isolated nucleic acids and their encoded proteins which are involved in lignin biosynthesis. The invention further provides recombinant expression cassettes, host cells, transgenic plants, and antibody compositions.

The present invention relates to recombinant glycosyl transferase UGT72E3/2 gene having an excellent syringin synthesis ability based on remarkable enzyme specificity for sinapyl alcohol, a method for producing a transgenic plant with increased syringin production based on a metabolic process which uses F5H and CHS genes that are involved with the phenylpropanoid biosynthesis pathway and Myb58 gene as a transcription factor for positive regulation of the gene that is involved with lignin biosynthesis pathway, and a plant obtained by the method. According to the present invention, syringin with various pharmaceutical applications can be effectively produced in a large amount in a plant, and thus it is expected to allow the development of an industry relating to agrobiological materials that are highly valuable as foods or pharmaceuticals.

Novel isolated polynucleotides and polypeptides associated with the lignin biosynthetic pathway are provided, together with genetic constructs including such sequences. Methods for the modulation of lignin content, lignin structure and lignin composition in target organisms are also disclosed, the methods comprising incorporating one or more of the polynucleotides of the present invention into the genome of a target organism.

The subject invention concerns materials and methods for modulating lignin biosynthesis in sugarcane plants. In one embodiment, lignin biosynthesis is down-regulated. Genes and the proteins encoded thereby that can be targeted for achieving down-regulation of lignin in sugarcane include, for example, 4-coumarate-CoA ligase (4CL). In one embodiment, the 4CL gene is 4CL-M, 4CL-N, or 4CL-L. The subject invention also concerns a sugarcane plant, specific plant tissue, and plant cells having modulated (e.g., down-regulated) lignin biosynthesis. The subject invention also concerns methods for producing a sugarcane plant having modulated (e.g., decreased or down-regulated) biosynthesis of lignin.