6 results about "Fiber elongation" patented technology

The invention relates to the technical field of gene engineering, in particular to application of a cotton GhGELP68D gene in regulation and control of cotton fiber elongation. According to the invention, the GhGELP68D protein belonging to a GDSL family is identified in upland cotton, and the nucleotide sequence of the coding gene GhGELP68D is as shown in SEQ ID NO. 1. A cotton transgenic overexpression plant is obtained through a cotton tissue culture technology, and compared with a wild type cotton fiber, overexpression of GhGELP68D causes length elongation of the cotton fiber; a silent vector is constructed through a VIGS technology, cotton is transformed, and the result shows that compared with an empty vector, the cotton fiber length of a GhGELP68D silent plant is obviously shortened. A key gene resource is provided for cotton fiber quality improvement, remarkable economic benefits are expected to be brought in the field of plant production, and the application prospect is extremely wide.

This invention discloses a WD40-like family protein gene, GoWD40L, for improving cotton fiber quality and its applications, belonging to the field of biotechnology applications. This WD40-like family protein gene, GoWD40L, exists in two haplotypes: haplotype 1 has a CDS sequence of SEQ ID NO.1; and haplotype 2 has a CDS sequence of SEQ ID NO.4. When the haplotype 2 gene sequence or its encoded protein is present in cotton plants, the allele or protein can promote an increase in cotton fiber length, fiber strength, fiber uniformity, and fiber elongation, and a decrease in micronaire value. This indicates that haplotype 2 of this gene plays an important role and has promising applications in improving cotton fiber quality traits and in breeding high-quality new cotton varieties.

The invention relates to a fibrilia composite modification method with functions of improving fiber elongation at break and endowing ammonia gas with intelligent visual detection. The fibrilia composite modification method comprises the following steps: step 1, soaking fibrilia in a high-concentration zinc chloride solution (the mass fraction of zinc chloride is 63-65%) for modification; step 2, extracting purple cabbage with water to prepare a purple cabbage extracting solution, then putting the fibrilia modified by zinc chloride into the purple cabbage extracting solution, finishing for a period of time at room temperature, taking out and drying to obtain the composite modified fibrilia. According to the modification method, the elongation at break of the jute fibers can be effectively improved, and the jute fibers are endowed with an ammonia gas visual intelligent color-changing indication function.

The invention discloses a flame-retardant polyolefin fiber and a preparation method thereof, and relates to the technical field of fiber preparation, and the flame-retardant polyolefin fiber comprises the following raw materials: polypropylene, modified epoxy fatty acid methyl ester, modified calcium carbonate, modified melamine cyanurate, a light stabilizer 944, an ultraviolet light absorber, an antioxidant and a compatilizer. According to the invention, the modified melamine cyanurate is added, so that the flame retardant property of the fiber can be remarkably improved, no molten drops exist during combustion of the fiber, the fuming amount is greatly reduced, meanwhile, the dispersion uniformity is good, weak spots cannot be formed in the fiber due to agglomeration, the thermal oxidation stability and aging resistance of the fiber are improved, and the fiber is not easy to decompose and lose efficacy in a high-temperature environment; while efficient flame retardance is realized, negative effects on mechanical properties such as elongation at break, toughness and the like of the fiber are reduced to the greatest extent, and flame retardance and practicability are both considered.

This invention provides a method based on upland cotton GhMP This research relates to the field of genetic engineering technology and describes a method for the coordinated regulation of cotton fiber elongation and Verticillium wilt resistance using genes, as well as transgenic cotton plants. The gene encodes a membrane protein, and experiments using overexpression and RNA interference transgenic lines have demonstrated its effectiveness. GhMP The expression level of this compound is positively correlated with fiber development and disease resistance: increased expression significantly increases fiber length and improves resistance to Verticillium wilt, while decreased expression leads to fiber shortening and weakened resistance. Further studies have shown that... GhMP Proteins are located on the cell membrane and can interact with... GhPIP2.7 and GhTIP1.1 Aquaporins interact and jointly participate in the transmembrane transport of hydrogen peroxide, forming a molecular complex that regulates fiber elongation and disease resistance. This invention provides a key target gene that combines quality improvement and disease resistance enhancement, offering a new strategy and gene resource for multi-trait molecular breeding of cotton, and has significant application value and promising prospects.

The invention belongs to the technical field of application of plant growth regulators, and particularly relates to application of 4-HPEA in regulation and control of cotton fiber length. According to the application disclosed by the invention, wide-target metabolome and targeted metabolite detection is carried out on GhADH1 transgenic cotton fiber tissues, the fact that accumulation of 4-HPEA (4-hydroxyphenethyl alcohol) in fibers is positively regulated by GhADH1 is found, and the fact that 4-HPEA is a potential catalytic product of GhADH1 is preliminarily determined. In-vitro enzyme activity and ovule in-vitro culture experiments are further combined to prove that the 4-HPEA is a direct catalytic product of GhADH1, and the 4-HPEA can obviously promote the elongation of fibers under a proper concentration condition. As a novel growth regulator for promoting fiber elongation, the 4-HPEA can provide a new regulation direction and an improved idea for molecular breeding of long-fiber cotton.