44 results about "Anthocyanin biosynthesis" patented technology

The invention provides a transcription factor TaMYB3 of a MYB class, which is separated from the plateau 115 of a purple kernel wheat variety and is used for regulating the synthetization and the metabolization of anthocyanin. TaMYB3 is positioned between 0.62 and 0.95 of a long arm physical map of wheat 4B chromosome. The subcellular fraction of a protein product is positioned on a cell nucleus. Shown by a derived amino acid sequence, the TaMYB3 codes a MYB class transcription factor regulating the synthetization and the metabolization of anthocyanin. The expression quantity of the TaMYB3 in the plateau 115 of a purple kernel wheat variety increases under the induction of light. The TaMYB3 can promote skin cells of the plateau 115 kernels after dark treatment to synthetize anthocyanin under the existence of transcription factors ZmR of corns bHLH during transient expression. Single TaMYB3 genes and single ZmR genes can not induct the synthetization of anthocyani, which shows that the TaMYB3 genes have the transcriptional activity of regulating the synthetization and the metabolization of anthocyanin. barly strip mosaic virus (BSMV) mediates the expression quantity decrease of the TaMYB3 in the plateau 115 kernels, and reduces the quantity of anthocyanin in kernels. This shows that the TaMYB3 participates in the biosynthesis of anthocyanin in the plateau 115 kernels.

The invention provides an MYB transcription factor CmMYB6 implicated in chrysanthemum petal anthocyanin biosynthesis regulation. The coding region sequence of the MYB transcription factor CmMYB6 contains 765 nucleotides. A CmMYB6 amino acid sequence contains a conserved R2R3 MYB domain, a [D/E]Lx2[R/K]x3Lx6Lx3R motif and an ANDV motif exist in the R3 domain, the [D/E]Lx2[R/K]x3Lx6Lx3R motif can interact with bHLH, and the ANDV motif is the characteristic motif of the MYB transcription factor implicated in anthocyanin biosynthesis regulation. The gene expression of CmMYB6 rises in the petal growth process and is significantly and positively correlated with anthocyanin synthesis the CmMYB6 can induce the activity of synthesis of a key gene CmDFR promoter from anthocyanin, and the CmMYB6 has substantially enhanced induction usefulness and can strongly induce accumulation of tobacco leaf anthocyanin during cooperative expression of the CmMYB6 and MrbHLH1. The MYB transcription factor can be used in transcription regulation of plant anthocyanin biosynthesis and plant color modification.

The invention discloses a pear transcription factor PyHY5 and application of a recombinant expression vector of the pear transcription factor PyHY5. The nucleotide sequence of a transcription factor PyHY5 gene which is separated from 'Red Zaosu' pears and has a function of promoting anthocyanin biosynthesis of pear peels is as shown in SEQ ID No. 1, and the encoded amino acid sequence of the transcription factor PyHY5 gene is as shown in SEQ ID No. 2. Transcription factors PyHY5 and PyMYB114 are co-transformed into strawberry and pear fruits by an agrobacterium-mediated transformation method;according to biological function verification, the cloned PyHY5 gene and a cofactor PyMYB114 thereof interact to promote the transport function of anthocyanin in the pear peels; through discovery of new functions of the PyHY5, new genetic resources are provided for molecular breeding that promotes accumulation of the anthocyanin in the pear peels, and new genetic resources are provided for the implementation of green agriculture; the development and utilization of the genetic resources is beneficial to agricultural cost reduction and environmental friendliness.

The invention provides application of a bayberry CAPS marker in detection of allo-related MrMYB1 Alleles in Chinese Bayberry, wherein the CAPS marker is a set of primer pairs and a restriction enzyme,the primer pair sequence is SEQ ID NO: 1-2, that restriction endonuclease is HhaI. The invention can easily, accurately and efficiently identify the alleles MrMYB1 and MrMYB1d of the transcription factor MrMYB1 gene of Myrica rubra regulating anthocyanin biosynthesis and different genotypes of Myrica rubra. The molecular marker can be used to predict the coloring ability of Myrica rubra fruits and molecular assisted selection.

The invention discloses a Yunnan red pear PybHLH gene through anthocyanin biosynthesis, trichome development and a salt stress regulatory protein and a prokaryotic expression vector thereof. The PybHLH gene is cloned from red fruit peel of Yunnan red pear NO.1 by using a RT-PCR (reverse transcription-polymerase chain reaction) technology, then the prokaryotic expression vector pGEX-4T-PybHLH is constructed, PybHLH protein is expressed in escherichia coli Rosetta (DE3) by pGEX-4T-PybHLH vector and then is purified, and Yunnan red pear PybHLH purified protein is obtained; the prokaryotic expression vector of the PybHLH gene is applied to preparing a pybHLH specific antibody, and the obtained pybHLH specific antibody is also used for researching the interaction of the protein and protein as well as the protein and DNA(deoxyribonucleic acid) and the detection to PybHLH transgenic plant. The obtained pybHLH specific antibody contains glutathione S transferase (GST) and is applied to researching the interaction of the protein through Far Western blotting and co-immunoprecipitation and accurately separating and obtaining the protein and DNA segment which are interacted with PybHLH.

Provided are a recombinant vector for rapidly obtaining non-GMO genome editing plants and a method for using the same. The recombinant vector comprises an expression element containing PAP1 and NtFT;The original vector is a vector of CRISPR/Cas9 for plant gene editing containing sgRNA gene, Cas9 gene and screening tag gene; The NtFT expression element produces proteins that promote early flowering and the PAP1 expression element produces proteins that promote anthocyanin biosynthesis in plants. The invention can greatly shorten the time for obtaining the gene editing mutation offspring, and screens the offspring plants by plant color, thus not only retaining the offspring of the target gene mutation, but also ensuring that the mutation offspring does not contain the transgenic fragment, and simultaneously can significantly improve the gene editing efficiency. The invention can be used for preparing the gene editing mutation offspring, and can greatly shorten the time for obtaining thegene editing mutation offspring. The method of the invention is simple, fast, cheap and efficient.

The invention discloses a protein capable of regulating and controlling the content of anthocyanin in a blueberry fruit as well as an encoding gene and application of the protein. The protein provided by the invention is any one of the following proteins: (a) a protein consisting of an amino acid sequence as shown in the sequence 1, (b) a protein which is obtained via performing substitution and/or deletion and/or adding of one or several amino acid residues on the amino acid sequence as shown in the sequence 1, comes from blueberries, is relevant to the content of anthocyanin in a plant product and is derived from the sequence 1, and (c) a protein which is homologous with the amino acid sequence defined by (a) or (b) by 99 percent or above, 95 percent or above, 90 percent or above, 85 percent or above or 80 percent or above, comes from the blueberries and is relevant to the content of the anthocyanin in the plant product. The protein and the encoding gene thereof which are provided by the invention are used for regulating and controlling biological synthesis of the anthocyanin in the blueberry fruit. The protein has important significance for cultivation of a new blueberry variety with higher anthocyanin content.

The invention discloses a plant expression vector pC2300-pOT2-At-pri-miR828 based on an Arabidopsis thaliana (At)-pri-miR828 gene and construction and application thereof. The plant expression vector pC2300-pOT2-At-pri-miR828 contains the At-pri-miR828 gene and a pOT2 cloning vector CaMV35s promoter, and has a nucleotide sequence shown in SEQ ID NO. 5. After plants are subjected to transfection by the plant expression vector disclosed by the invention, plants with high expression of the At-pri-miR828 gene can be obtained, and the biosynthesis of anthocyanin in the plants is regulated and controlled.

The invention belongs to the field of plant molecular biology, and particularly relates to a vaccinium bracteatum thunb myb transcription factor VbMYB gene and an encoding protein and application thereof. The invention provides a vaccinium bracteatum thunb myb transcription factor VbMYB. The nucleotide sequence of the VbMYB is shown as SEQ ID NO.1 in a sequence table. The expression of the vaccinium bracteatum thunb myb transcription factor VbMYB gene and the accumulation of anthocyanin in vaccinium bracteatum thunb peel are positively correlated, and tobacco leaves can be strongly induced toaccumulate anthocyanin. It shows that the VbMYB can be used for effectively inducing plant anthocyanin biosynthesis and is an anthocyanin synthesis positive regulation factor. The vaccinium bracteatumthunb myb transcription factor VbMYB has a transcriptional regulation effect on anthocyanin biosynthesis, can be applied to gene engineering and breeding of plant anthocyanin biosynthesis, and changes the color of tissue such as plant fruits.

The present invention provides transgenic carrot plants comprising at least one heterologous DNA sequence encoding: (a) a promoter of a transcription factor gene; or (b) a transcription factor geneoperably linked to a promoter; wherein the heterologous DNA sequence increases the expression of at least one gene encoding a sinapic acid glucosyltransferase (USAGT). The transcription factor gene is preferably DcMYB90 (SEQ ID NO:1) or DcEGL1 (SEQ ID NO:2) or a sequence having at least 80% identity to the sequence of SEQ ID NO:1 or at least 80% identity to the sequence of SEQ ID NO:2, wherein the sequence encodes a transcription factor protein increasing the expression of sinapic acid glucosyltransferase (USAGT) having the sequence of SEQ ID NO:4.

The invention discloses an upstream regulatory factor IbEBF2 and application thereof in regulating IbbHLH2 expression of purple sweet potatoes. According to the invention, a purple sweet potato strain A5 is used as an experimental material, a promoter sequence of IbbHLH2 is cloned, and an upstream regulatory factor IbEBF2 of an IbbHLH2 gene is successfully obtained through a yeast one-hybrid library screening experiment. A yeast one-hybrid rotary experiment and a dual-luciferase report system are used for detection to confirm that the IbbHLH2 promoter interacts with an upstream regulatory factor IbEBF2. A subcellular localization result shows that IbEBF2 is localized in a cell nucleus. A self-activation activity experiment result shows that the IbEBF2 has self-activation activity. The basic theory of molecular regulation and control of plant anthocyanin biosynthesis can be enriched and deepened theoretically, and meanwhile, new thoughts and clues are expected to be provided for cultivation measures for improving the content of pigments in purple sweet potato tuberous roots.

The invention discloses application of a purple cabbage anthocyanin biosynthesis regulatory gene BrTT8 to photoinduction type purple tomatoes cultivation and a method. The nucleotide sequence of the purple cabbage anthocyanin biosynthesis regulatory gene BrTT8 is shown as SEQ ID NO. 3. The gene is constructed to be a recombinant expression vector, and converted into tomato leaves through an agrobacterium-mediated transformation method, finally transgenic tomato plants are obtained, and when the transgenic tomato plants are irradiated by strong light, stems, leaves, petals and upper ends of fruits of transgenic tomatoes are purple, the content of anthocyanin and the content of flvonol in the fruits are improved remarkably; synthesis of anthocyanin does not exist in tissue of transgenic tomatoes cultivated under weak light irradiation, the risks of diseases such as cancer and cardiovascular can be reduced by eating food rich in ingredients such as anthocyanin and flavone regularly, the obtained transgenic tomatoes have important application value, and the purple transgenic tomatoes have certain ornamental value.