5 results about "Starch synthase" patented technology

This product provides buckwheat plants with altered starch properties. [Solution] Starch synthase (SSIIa) activity is deficient in buckwheat plants. Buckwheat flour obtained from such buckwheat plants has urea disintegration properties that are 1.5 times higher than those of the wild type, and its gelatinization peak temperature is 95% or less than that of the wild type.

The present application relates to a method for producing starch using carbon dioxide and a recombinant microorganism, a method for constructing a recombinant microorganism, and a reagent. In the method for producing starch using carbon dioxide, (1) energy and a carbon source are provided to a microbial cell based on carbon dioxide and extracellular non-photosynthetic energy, and (2) starch is produced in the microbial cell based on at least one of up-regulated glucose-1-phosphate adenylyltransferase and starch synthase in the microbial cell. Thus, by using non-photosynthetic energy such as electric energy or hydrogen energy, starch can be effectively produced inside the microbial cell by fixing carbon dioxide.

The invention discloses a corn ZmHY5L gene and application of the corn ZmHY5L gene in improvement of corn yield and quality, and belongs to the technical field of molecular breeding. The invention discloses the effect of the corn ZmHY5L gene in regulating and controlling the yield and the quality of corn for the first time, and a plant with the corn ZmHY5L gene mutated / knocked out has the advantages that the seed volume is increased, and the hundred-grain weight is increased; the particle combined starch synthase protein is reduced, the total starch content is not changed, the amylopectin proportion is increased, and the waxiness of the mouth feel is enhanced; a new functional gene is provided for early revealing a regulation and control network of corn yield and starch composition and genetic improvement of corn quality; technicians in the field can realize early detection of corn yield and quality by investigating the expression quantity of the ZmHY5L gene, and the method can be used for genetic engineering breeding of high-yield and high-quality corn, and has important significance for assisting molecular design breeding, accelerating the breeding process and reducing the breeding cost and workload.

The invention discloses a high-level starch synthesis microorganism, relates to genetic modification for improving the starch synthesis capacity of the microorganism and a genetic engineering bacterium for efficiently synthesizing starch, and belongs to the technical field of biotechnology and genetic engineering. The method comprises the following steps: by taking microorganisms into which exogenous glucose-1-phosphoadenosine transferase and starch synthetase genes are introduced as initial strains, optimizing a starch synthesis route, strengthening starch synthesis precursor supply, weakening a starch degradation process, finely blending a carbon metabolic flow and transforming the form and cell size of the strains; the starch synthesis and accumulation capability of the strain is improved. The genetic modification disclosed by the invention can greatly improve the yield of starch synthesized by microbial cells, the carbon source conversion rate and the production intensity, produces the genetically engineered bacterium which is high in industrial attribute and is capable of efficiently synthesizing starch, and can be applied to industrial biological manufacturing of starch.

The invention belongs to the technical field of biology, and discloses construction and application of an artificially synthesized starch recombinant strain. According to the invention, starch synthase is over-expressed in the bacterial cellulose high-yield strain, a competitive pathway of starch synthesis is blocked, and the bacterial cellulose high-yield strain is transformed into an artificial starch synthesis strain. Compared with an artificial starch synthesis path in the prior art, the method has the advantages of low cost, high starch yield, high chassis cell growth rate, sufficient starch synthesis precursor substances and the like.