阅读说明：本技术 一种甘露糖-1-磷酸鸟苷酰转移酶、编码基因及应用 (Mannose-1-phosphate guanylyltransferase, coding gene and application ) 是由 刘秀峰 许静杨 楼辰军 杨兆顺 许高平 王昆 邵凤武 于 2021-07-30 设计创作，主要内容包括：本发明属于基因工程技术领域,公开了一种甘露糖-1-磷酸鸟苷酰转移酶、编码基因及应用,甘露糖-1-磷酸鸟苷酰转移酶的氨基酸序列SEQIDNO：1；所述编码所述甘露糖-1-磷酸鸟苷酰转移酶的DNA核苷酸序列SEQIDNO：2；所述甘露糖-1-磷酸鸟苷酰转移酶的cDNA核苷酸序列SEQIDNO：3。本发明提供的甘露糖-1-磷酸鸟苷酰转移酶PsMT1为己糖转运蛋白家族成员,具有甘露糖转运功能,在催化果糖转化为甘露糖过程中起重要作用；通过基因工程技术抑制PsMT1基因表达影响小麦条锈菌的菌体生长,降低小麦条锈菌的致病性,在开发小分子核苷酸农药防治小麦条锈病方面具有良好的应用前景。(The invention belongs to the technical field of genetic engineering, and discloses mannose-1-phosphate guanylyltransferase, a coding gene and application thereof, wherein the amino acid sequence of the mannose-1-phosphate guanylyltransferase is as shown in SEQ ID NO: 1; the DNA nucleotide sequence of the mannose-1-phosphate guanylyltransferase is represented by SEQ ID NO: 2; the cDNA nucleotide sequence of the mannose-1-phosphate guanylyltransferase is represented by SEQ ID NO: 3. the mannose-1-phosphate guanylyltransferase PsMT1 provided by the invention is a member of hexose transporter family, has a mannose transport function, and plays an important role in catalyzing the conversion of fructose into mannose; the gene engineering technology is used for inhibiting the expression of the PsMT1 gene to influence the growth of the thallus of the wheat stripe rust, the pathogenicity of the wheat stripe rust is reduced, and the application prospect in the aspect of developing small molecular nucleotide pesticides for preventing and treating the wheat stripe rust is good.)

1. The mannose-1-phosphate guanylyltransferase is characterized in that mannose-1-phosphate guanylyltransferase is cloned from puccinia striiformis wheat obligate fungi to obtain a mannose-1-phosphate guanyltransferase gene PsMT1, and the amino acid sequence of the mannose-1-phosphate guanyltransferase is SEQ ID NO: 1, the amino acid sequence of the mannose-1-phosphate guanylyltransferase consists of 414 amino acid residues.

2. A protein derived from the mannose-1-phosphate guanylyltransferase of claim 1, wherein the protein is a protein that encodes the amino acid sequence of SEQ ID NO: 1 through substitution, deletion or addition of one or more amino acid residues, and mannose and fructose transportation related protein derived from the mannose-1-phosphate guanylyltransferase.

3. A polypeptide expressed by the mannose-1-phosphate guanylyltransferase of claim 1 wherein the polypeptide encodes a polypeptide comprising an amino acid sequence substantially as shown in SEQ ID NO: 1, and is related to mannose and fructose transport.

4. A nucleotide encoding the mannose-1-phosphate guanylyltransferase of claim 1, wherein the nucleotide sequence encoding the mannose-1-phosphate guanylyltransferase comprises any one of the following (r) -c):

the nucleotide sequence of the DNA encoding the mannose-1-phosphate guanylyltransferase is shown in SEQ ID NO: 2, the total length of the nucleotide is 1774 bp; the cDNA nucleotide sequence for coding the mannose-1-phosphate guanylyltransferase is shown as SEQ ID NO: 3, the total length of the nucleotide is 1245 bp;

② the nucleotide encoding the mannose-1-phosphate guanylyltransferase is a nucleotide encoding a nucleotide sequence that has a nucleotide sequence as shown in SEQ ID NO: 2 and SEQ ID NO: 3 and the nucleotide sequence encodes the mannose-1-phosphate guanylyltransferase;

(iii) a polynucleotide complementary to the polynucleotide of (iii) or (iii).

5. A primer for the nucleotide of mannose-1-phosphate guanylyltransferase according to claim 4, wherein the primer is obtained by amplifying the full length or any fragment of the polynucleotide sequence.

6. Use of mannose-1-phosphate guanylyltransferase according to claim 1 as a gene of interest for a small molecule nucleotide pesticide.

7. Use of the nucleotide encoding the mannose-1-phosphate guanylyltransferase of claim 4 as a target gene for a small molecule nucleotide pesticide.

Technical Field

The invention relates to mannose-1-phosphate guanylyltransferase, an encoding gene and application.

Background

Currently, wheat stripe rust caused by Puccinia striiformis wheat specialized (Pst) fungus is one of the important diseases of cereal crops worldwide, causing huge economic losses every year. China has caused a plurality of epidemics by Pst physiological races, seriously harms the production safety of wheat, and through long-term continuous efforts, China has made a great progress in the treatment of wheat stripe rust, but the Pst variability is extremely strong, new pathogenic types are continuously emerging, and the wheat stripe rust is still a fungal disease which is very important in wheat production in China.

Pst is used as a living nutritional obligate parasitic bacterium, and various nutrient substances including saccharides are required to be obtained from the host wheat for the growth and development of the thallus. At present, it is clear that the parasitic fungus with the living nutrition obligation including Pst forms a sucker by hypha high specialization in the host infecting process, and the sucker has the function of absorbing nutrient substances from isotope labeling feeding experiments to transcription expression analysis. The somatic cell plasma membrane of the host is not really damaged after the vital nutrition specificity parasitic bacteria sucker penetrates through the cell wall of the host, the host cell plasma membrane is invaginated to wrap the sucker but still keeps complete, the wrapping area of the host cell plasma membrane is correspondingly enlarged along with the expansion of the sucker body, and the sucker is in close contact with the host cell plasma membrane and does not break through the host cell plasma membrane all the time to enter protoplasm. The histology cytology shows that the part of the host cell plasma membrane is structurally different from the general plant cell membrane, and the host cell can not actively control the substance to flow across the membrane. After the Pst sucker penetrates the host cell wall, the Pst sucker is wrapped by a sheath formed by a wheat cytoplasm membrane, and a neck ring is generated at the sucker neck of the Pst sucker to form a special closed apoplast together with sucker extracellular matrix.

The apoplast is the basic space for nutrient communication between plant cells and is also an important place for pathogenic bacteria to obtain various nutrients including sugar of hosts. Sucrose produced by photosynthesis reaction of mesophyll cells of a source organ of a plant under normal growth conditions is transported to phloem parenchyma cells, and the transported sucrose is then absorbed into SE-CC by sucrose/proton transporters (sucrose/proton transporters) on sieve cell complex (SE-CC), and then transported over a long distance to supply a sink organ incapable of photosynthesis reaction. The sugar distribution between source-reservoir organs and between reservoir organs is strictly regulated and controlled by plants in the normal growth and development process. There is almost no plasmodesmata between the phloem parenchyma cells and SE-CC in the wheat leaves, and sucrose is transported to apoplast before entering SE-CC from the parenchyma cells. The inventors found that infection of wheat by Pst races of different virulence results in dynamic changes in the sugar concentration in wheat apoplast and that the sugar concentration in apoplast is functionally linked to Pst pathogenicity. The only hexose transporter gene PsHXT1 encoded product reported in Pst has only high affinity for glucose.

Through the above analysis, the problems and defects of the prior art are as follows: the coding product of the sucrase gene PsINV of Pst can efficiently decompose the sucrose of wheat, only a gene product for transporting glucose is found in Pst at present, but a gene product capable of transporting fructose is not found yet, and the accumulation of the generated fructose can improve the quality of the wheat in apoplastThe ratio thus provokes a resistance response in wheat. How successfully infected Pst overcomes fructose accumulation mediated wheat resistance has not been solved.

The difficulty in solving the above problems and defects is: the number of genes for predicting coding products in the Pst genome is large, the number of the genes with finished function annotations is very small, the method for analyzing the functions of the gene products according to phenotypes after the conventional gene knockout and complementation is difficult to achieve the effect in the living obligate parasitic bacteria Pst, and the difficulty in screening sugar transport genes is increased.

The significance of solving the problems and the defects is as follows: the obtained mannose-1-phosphate guanylyltransferase gene with the mannose transport function is beneficial to systematically discussing the Pst-wheat interaction mechanism, provides a target for developing small molecular pesticides based on nucleic acid, and has important theoretical significance and strong application potential.

Disclosure of Invention

The invention aims to provide mannose-1-phosphate guanylyltransferase of puccinia striiformis wheat specialized fungi, a coding gene and application.

The protein provided by the invention is a mannose transporter which is derived from puccinia striiformis wheat specialized fungi, and the mannose-1-phosphate guanylyltransferase comprises the following components: the mannose-1-phosphate guanylyltransferase gene PsMT1 is cloned from puccinia striiformis wheat specialized fungi, and the amino acid sequence of the mannose-1-phosphate guanylyltransferase gene is shown as SEQ ID NO: 1, the amino acid sequence of the mannose-1-phosphate guanylyltransferase consists of 414 amino acid residues.

It is another object of the present invention to provide a mannose-1-phosphate guanylyltransferase-derived protein using the mannose-1-phosphate guanylyltransferase, wherein the mannose-1-phosphate guanylyltransferase-derived protein is a protein obtained by converting a sequence of SEQ ID NO: 1 through substitution, deletion or addition of one or more amino acid residues, and mannose and fructose transportation related protein derived from the mannose-1-phosphate guanylyltransferase.

It is another object of the present invention to provide a polypeptide encoding a polypeptide comprising an amino acid sequence substantially identical to SEQ ID NO: 1, and is related to mannose and fructose transport.

Another object of the present invention is to provide a nucleotide encoding the mannose-1-phosphate guanylyltransferase, wherein the nucleotide sequence encoding the mannose-1-phosphate guanylyltransferase includes any one of the following (r) -c):

the nucleotide sequence of the DNA encoding the mannose-1-phosphate guanylyltransferase is shown in SEQ ID NO: 2, the total length of the nucleotide is 1774 bp; the cDNA nucleotide sequence for coding the mannose-1-phosphate guanylyltransferase is shown as SEQ ID NO: 3, the total length of the nucleotide is 1245 bp;

② the nucleotide encoding the mannose-1-phosphate guanylyltransferase is a nucleotide encoding a nucleotide sequence that has a nucleotide sequence as shown in SEQ ID NO: 2, and the nucleotide sequence encodes the mannose-1-phosphate guanylyltransferase;

(iii) a polynucleotide complementary to the polynucleotide of (iii) or (iii).

Another objective of the invention is to provide a primer obtained by amplifying the full length or any fragment of the polynucleotide sequence.

The invention also aims to provide application of the mannose-1-phosphate guanylyltransferase as a target gene of a small-molecule nucleotide pesticide.

The invention also aims to provide application of the nucleotide for coding the mannose-1-phosphate guanylyltransferase in a target gene serving as a small-molecule nucleotide pesticide.

By combining all the technical schemes, the invention has the advantages and positive effects that: the mannose-1-phosphate guanylyltransferase provided by the invention is derived from puccinia striiformis wheat specialized fungi. The mannose-1-phosphate guanylyltransferase PsMT1 is a member of hexose transporter family, has a mannose transport function, and plays an important role in catalyzing the conversion of fructose into mannose. The gene expression of PsMT1 is inhibited by a genetic engineering technology, the growth of the thallus of the wheat stripe rust can be influenced, the pathogenicity of the wheat stripe rust is reduced, and the application prospect in the aspect of developing a small molecular nucleotide pesticide for preventing and treating the wheat stripe rust is good.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is an agarose gel electrophoresis image of a PCR product obtained by introducing BamHI 5 'and XhoI 3' into PsMT1 gene according to the present invention; m: 2000,1000,750,500,250,100bp from top to bottom; 1: amplification product of PsMT 1.

FIG. 2 is a colony PCR identification agarose gel electrophoresis picture of the PsMT1 gene cloned into a pDR196 vector provided by the embodiment of the invention; C1-C3: transforming pDR196 empty vector; T1-T4: transformant with PsMT1 gene.

FIG. 3 shows the growth of the hexose uptake function-deficient yeast EBY. VW4000 introduced with the PsMT1 gene provided by the present invention on a medium containing various monosaccharides or sucrose as the sole carbon source; c represents yeast transformed with pDR196 empty vector; t represents a yeast transformed with the PsMT1 gene; (a) mannose; (b) galactose; (c) glucose; (d) sucrose.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Aiming at the problems in the prior art, the invention provides mannose-1-phosphate guanylyltransferase, a coding gene and application thereof, and the invention is described in detail with reference to the accompanying drawings.

Puccinia striiformis wheat specialization type: and (4) preservation at crop research institute in Tianjin.

Yeast mutant eby.vw4000: summits on the front of the university of china agriculture.

Plasmid pDR 196: summits on the front of the university of china agriculture.

SEQ ID NO: 1 is:

Met Ala Ser Lys Ala Val Tyr Leu Leu Gly Gly Pro Ser Lys Gly Thr

Arg Met Arg Pro Leu Thr Leu Asp Ile Pro Lys Pro Leu Phe Pro Leu

Ala Gly Arg Ala Ile Ile Trp His Gly Ile Gln Ala Leu Ser Lys Ile

Pro Asp Leu Lys Glu Val Leu Leu Ile Gly Phe Tyr Glu Asp Ser Val

Leu Ala Pro Phe Ile Lys Gln Ala Ser Arg Asp Phe Pro Ser Val Gln

Ile Lys Tyr Met Arg Glu Tyr Glu Ala Leu Gly Thr Ala Gly Gly Leu

Tyr His Phe Arg Asp Ala Ile Leu Lys Gly Ser Pro Glu Gln Ile Tyr

Val Leu His Ser Asp Ile Ala Ser Ser Phe Pro Leu Leu Glu Leu Lys

His Phe His Asp Lys His Arg Gly Val Gly Thr Leu Met Ala Val Arg

Val Ser Lys Gln Leu Ser Thr Lys Phe Gly Cys Ile Val Thr Asn Pro

Glu Thr Ser Gln Ala Leu His Tyr Val Glu Lys Pro Glu Ser Phe Leu

Ser Glu Ile Ile Asn Thr Gly Val Tyr Leu Phe Asp Lys Ser Ile Phe

Asp Glu Ile Lys Ala Ala Met Asp Leu Lys Val Lys Gln Ser Val Asp

Asp Pro Leu Ser Arg Gln Asp Asp Leu Leu Arg Leu Glu Gln Asp Val

Ile Ser Pro Leu Ala Asp Arg Gly Lys Leu Tyr Val Tyr Glu Thr Lys

Ser Leu Trp Lys Gln Ile Lys Thr Ala Gly Ser Ala Leu Pro Ala Asn

Thr Leu Val Leu Glu Ser Tyr Lys Ser Asn Asn Pro Val Leu Leu Arg

Arg Arg Ser Pro Thr Ile Ile Ala Lys Ala Pro Pro Thr Asn Val Leu

Gly Pro Glu Ile Val Glu Pro Cys Tyr Ile Asp Glu Thr Ala Val Ile

Asp Pro Ser Ala Lys Ile Gly Pro Asn Val Ser Ile Gly Ala Asn Val

Lys Ile Gly Phe Gly Val Arg Val Arg Asp Ser Ile Val Leu Asp Asn

Ser Val Leu Glu Gln Asn Ser Cys Val Met Phe Ser Ile Leu Ser Glu

Asp Thr Lys Ile Gly Pro Trp Ala Arg Val Glu Gly Cys Pro Asp Val

Ser Asp Ala Ser Asp Asn Lys Phe Ser Ile Ser Val Leu Ala Lys Asp

Val Glu Val Lys Ser Glu Ile His Val Arg Ser Cys Ile Val Leu Pro

His Lys Thr Leu Gly Arg Ser Ser Ala Asn Glu Val Leu Leu

SEQ ID NO: 2 is as follows:

ATGGCTTCGAAAGCTGTCTATCTACTCGGCGGTCCTAGCAAGGTAAAGAGACGAATACCGACCACAATTTCGAATGCTACGTTCCGATCTTGAGAAGCTTAACTGACCCTTTCTTACTACTAAACCTATGTCTAGGGTACTCGAATGCGTCCCTTGACGCTCGATATCCCCAAGCCGCTGTTTCCACTCGCCGGTAGAGCAATCATCTGGCATGGGATCCAAGCCCTGTCCAAGATTCCCGATCTGAAGGAAGTCCTACTTATCGGATTCTACGAGGACTCGGTACTGGCTCCATTTATCAAGCAGGCTAGCCGGGACTTCCCTTCCGTTCAAATCAAGTCAGCCCCCTCCTTTCCCTCCATCCGACATCATCCGAATTATCGTTGACTGACGCTCGATCGATCGTCTTTACCGATATGATGTGACAGATACATGCGCGAATACGAAGCGCTTGGTACGGCTGGAGGGCTCTATCATTTCCGAGATGCGATCCTGAAAGGCTCGCCCGAACAGATCTACGTGCTCCACTCAGACATAGCCTCCTCGTTCCCGCTCCTCGAGCTGAAGCACTTTCACGATAAGCATCGTGGCGTGGGCACCCTCATGGCCGTTCGGGTCTCCAAGCAACTCTCGACCAAGTTCGGTTGTATCGTCACCAACCCAGAGACCTCTCAGGCTCTGCATTACGTCGAGAAACCGGAATCATTCCTCTCCGAAATCATCAATACTGGCGTCTATCTCTTCGATAAATCTATCTTCGATGAAATCAAAGCCGCCATGGATCTAAAGGTCAAACAGTCGGTGTGAGTTTTTCGTCTTCTCTCTCTCACTTTCACGCCAAAAAATCATCTTCAACGTTCGGCTTTAATTAACTGGATTGGTTCTGTGTTCTTGCTTCAAGTGATGACCCTCTTTCTCGTCAGGACGATCTATTACGACTTGAACAAGACGTCATCTCCCCCTTAGCCGATCGTGGAAAACTCTACGTATACGAGACCAAGTCGCTTTGGAAACAAATCAAGACAGCTGGGTGAGTCAGCTACATTTTGATTTTTTTTACTTAAGGACCTGGGAAGCGTGGCGCTAACAGCCCCCCGATCGTTTTACAGCTCTGCCTTACCGGCCAACACGCTTGTTCTCGAATCGTACAAGTCCAACAATCCAGTGCTTCTCCGTCGACGATCGCCAACGATCATCGCCAAAGCGCCACCAACGAACGTACTCGGACCGGAGATTGTAGAACCCTGTTACATCGATGAGACGGCGGTAATTGACCCATCGGCCAAGATTGGTCCGAACGTCTCTATTGGTGCCAACGTCAAGATTGGCTTTGGTGTCCGGGTCAGGGACTCGATCGTCCTCGATAATAGCGTCCTCGAAGTGAGTTCGACCCTCCCCACACATCTGAAATTCCCGGTTCTAATTCATTTTATCCCAGCAAAATAGCTGCGTCATGTTCTCCATCCTCAGTGAGGACACCAAGATTGGTCCATGGGCCCGAGTCGAAGGCTGTCCCGACGTCAGCGATGCCAGTGACAACAAATTCAGTATCTCAGTCTTGGGTAAGCGAAAGATCCCTGATCTATCTTTTCTCATGATCCTAGTCTGTTATTTTTTTGTCACGTGATACTGATCAATCTTTTATCTCTGTACGATCGCCCTCGTGATGGTAGCCAAGGATGTCGAAGTCAAGAGCGAGATACACGTCAGGAGTTGTATCGTTTTGCCCCACAAGACTTTGGGTAGATCGTCCGCCAACGAGGTCTTGTTATGA

SEQ ID NO: 3 is as follows:

ATGGCTTCGAAAGCTGTCTATCTACTCGGCGGTCCTAGCAAGGGTACTCGAATGCGTCCCTTGACGCTCGATATCCCCAAGCCGCTGTTTCCACTCGCCGGTAGAGCAATCATCTGGCATGGGATCCAAGCCCTGTCCAAGATTCCCGATCTGAAGGAAGTCCTACTTATCGGATTCTACGAGGACTCGGTACTGGCTCCATTTATCAAGCAGGCTAGCCGGGACTTCCCTTCCGTTCAAATCAAATACATGCGCGAATACGAAGCGCTTGGTACGGCTGGAGGGCTCTATCATTTCCGAGATGCGATCCTGAAAGGCTCGCCCGAACAGATCTACGTGCTCCACTCAGACATAGCCTCCTCGTTCCCGCTCCTCGAGCTGAAGCACTTTCACGATAAGCATCGTGGCGTGGGCACCCTCATGGCCGTTCGGGTCTCCAAGCAACTCTCGACCAAGTTCGGTTGTATCGTCACCAACCCAGAGACCTCTCAGGCTCTGCATTACGTCGAGAAACCGGAATCATTCCTCTCCGAAATCATCAATACTGGCGTCTATCTCTTCGATAAATCTATCTTCGATGAAATCAAAGCCGCCATGGATCTAAAGGTCAAACAGTCGGTTGATGACCCTCTTTCTCGTCAGGACGATCTATTACGACTTGAACAAGACGTCATCTCCCCCTTAGCCGATCGTGGAAAACTCTACGTATACGAGACCAAGTCGCTTTGGAAACAAATCAAGACAGCTGGCTCTGCCTTACCGGCCAACACGCTTGTTCTCGAATCGTACAAGTCCAACAATCCAGTGCTTCTCCGTCGACGATCGCCAACGATCATCGCCAAAGCGCCACCAACGAACGTACTCGGACCGGAGATTGTAGAACCCTGTTACATCGATGAGACGGCGGTAATTGACCCATCGGCCAAGATTGGTCCGAACGTCTCTATTGGTGCCAACGTCAAGATTGGCTTTGGTGTCCGGGTCAGGGACTCGATCGTCCTCGATAATAGCGTCCTCGAACAAAATAGCTGCGTCATGTTCTCCATCCTCAGTGAGGACACCAAGATTGGTCCATGGGCCCGAGTCGAAGGCTGTCCCGACGTCAGCGATGCCAGTGACAACAAATTCAGTATCTCAGTCTTGGCCAAGGATGTCGAAGTCAAGAGCGAGATACACGTCAGGAGTTGTATCGTTTTGCCCCACAAGACTTTGGGTAGATCGTCCGCCAACGAGGTCTTGTTATGA

the technical solution of the present invention is further described with reference to the following specific examples.

Example 1 recombinant plasmid construction

1. Primer design

BamHI was introduced into 5 'of the gene and XhoI was introduced into 3' of the gene with reference to the cloning site of the pDR196 vector and the restriction site of cds of the PsMT1 gene. The primer sequences are as follows:

PrimerID	PrimerSequence(5’-3’)
		PMTf	CGGAATTCatggcttcgaaagctgtct
PMTr	CCGCTCGAGtcataacaagacctcgttgg

2. amplification of templates

The guaranteed enzyme was KOD (KOD-101) from Toyobo, and the reaction system was configured as follows:

Component	Volume(μL)
		10×KODBuffer	5
2mMdNTPs	5
		gDNA	1
216(10μM)	1
		217(10μM)	1
KODDNAPolymerase	1
		ddH2O	36
Total	50

1) the PCR reaction procedure was as follows:

PCR product recovery

2) Add 4 volumes (800. mu.L) of Buffer CP to a 1.5ml centrifuge tube (containing 200. mu.L PCR reaction volume, 50. mu.L amplification tube 4); violent shaking and short-time centrifugation;

3) placing the adsorption column in the collection tube;

4) transferring the mixture to an adsorption column (750 μ L each time, one time rotation cannot be completed, after centrifugation, pouring off waste liquid, and transferring the rest mixture to the adsorption column for centrifugation);

5)13000g, centrifuging for 1min, and discarding the filtrate;

6) adding 700 μ L of eluent, centrifuging at 13000g for 1min, and removing the filtrate;

7) adding 500 μ L of eluent, centrifuging at 13000g for 1min, and removing the filtrate;

8) centrifuging at 13000g for 2min, and throwing off ethanol on the adsorption column;

9) the column was transferred to a new 1.5ml centrifuge tube and 30. mu.L ddH was added to the center of the column₂O, standing at room temperature for 1 min; 13000g, centrifugating for 2min, the filtrate is the recovered DNA;

the recovered DNA was subjected to 1.2% agarose gel electrophoresis, and the results are shown in FIG. 1.

Ligation of PCR products to expression vectors

4.1 pDR196 double enzyme digestion

1) The ligation system was prepared according to the following table:

the enzyme is cut for 1h at 37 ℃, and then absolute ethyl alcohol is added to precipitate the product. 10 μ L ddH₂Dissolving O for later use.

2) The following table was used to formulate the attachment system:

Component	Volume(μL)
		5×LigationMix	2
Target	5
		pDR196	3
Total	10

3) gently shake up, and centrifuge briefly.

4) Standing at 50 deg.C for 15 min.

5) The ligation product was directly converted.

6) Chemically competent cells DH5a were removed and thawed in ice water mixture.

7) The ligation product was added and left on ice for 30 min.

8) The tube was placed in a 42 ℃ water bath for exactly 90s without shaking.

9) The tube was quickly moved to an ice bath for 2min and left at room temperature for 5 min.

10) Add 800. mu.L LB liquid medium without antibiotics to each tube, and resuscitate by shaking at 37 ℃ for 45 min.

11) Centrifuging at 8000rpm for 1min, removing 800. mu.L of supernatant, resuspending, and uniformly spreading on Kan resistant plates.

12) The plate is placed at room temperature for drying, placed in an incubator at 37 ℃ upside down, and cultured for 12-16h to grow colonies.

13) And carrying out colony PCR identification and sequencing identification.

5. Colony PCR and sequencing identification

A single colony is selected and dissolved in 200 mu L of LB containing Kan, and 1 mu L of the single colony is absorbed and used as a template to be added into a prepared PCR system. The PCR system was prepared as follows:

Component	Volume(μL)
		2×SGPCRMasterMix	10
T7Promoterprimer(10μM)	0.5
		T7TerminatorPrimer(10μM)	0.5
bacterial liquid	1
		ddH2O	7
Total	20

T7 promoter and terminator were used as universal sequencing primers for colony identification. The Tm of the primer is 50 ℃, and the detection result is shown in FIG. 2 after 35 cycles of amplification and 1.2% agarose gel electrophoresis.

And simultaneously, selecting positive clones for sequencing identification. Sequencing was correct, and the pDR196-PsMT1 construction was complete.

Example 2 functional verification of the PsMT1 product

1. Recombinant plasmid transformed yeast competence

1mL of salmon sperm DNA was boiled at 100 ℃ for 5min and rapidly ice-washed to prepare single-stranded DNA.

100 mu L of yeast competent cells, 5-10 mu g of recombinant plasmid DNA to be transformed and 50 mu g of denatured SS-DNA are added into a 1.5mL centrifuge tube, and the mixture is gently swirled and mixed to ensure that the thalli are completely and uniformly distributed.

Add 600. mu.L of sterile 0.1M LiCl/PEG4000 solution and vortex mix for 10 s.

Incubate 30 ℃ in a 230rmp water bath for 30 min.

Add 70. mu.L DMSO and mix by gentle inversion.

Bathing at 42 deg.C for 15min, and cooling on ice for 1-2 min.

Centrifuge at 14000rmp for 5min at room temperature and discard the supernatant.

500 μ L of sterilized 1 XTE Buffer (pH7.4) resuspended cells, centrifuged at 14000rmp for 3-5s at room temperature and the supernatant discarded.

Adding 300 pieces of LYPD liquid culture medium, incubating for 1-4h at 30 deg.C in water bath with shaking table, spreading 100 μ L of the mixture on SD-ura (pH5.8) culture medium containing 2% maltose and SD-ura (pH5.8) culture medium containing 2% glucose, and culturing at 30 deg.C for 3-5 d.

2. Identification of recombinant yeast pDR196-PsMT1-EBY.VW4000

Single colonies of yeast which grew vigorously on SD-ura (pH5.5) medium containing 2% glucose were picked, inoculated into YPD liquid medium, and incubated overnight at 30 ℃ in 230rmp water bath with shaking. Plasmids were extracted according to the yeast plasmid miniprep kit instructions. PCR identification is carried out by taking the extracted yeast plasmid as a template, and BamHI and XhoI double enzyme digestion identification is carried out on the extracted yeast plasmid.

3. Sugar absorption function complementation test

Yeast with vigorous growth (experimental group: yeast transformant pDR196-PsMT1-EBY. VW4000, negative control group: pDR196-EBY. VW4000) were selected and monocloned in SD-ura (pH5.8) deficient medium containing 2% maltose, and shake-cultured to OD₆₂₃0.6, and streaked on a solid medium containing mannose, galactose, glucose and sucrose as the sole carbon source by using a glass rod, and the transformation of the empty vector was used as a negative control. The results of the observation after 2 to 4 days of incubation at 30 ℃ are shown in part (a) to part (d) of FIG. 3.

The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.

Sequence listing

<110> Tianjin City academy of agricultural sciences

<120> mannose-1-phosphate guanylyltransferase, coding gene and application

<160> 3

<170> SIPOSequenceListing 1.0

<210> 1

<211> 414

<212> PRT

<213> Puccinia striiformis wheat specialization type (Puccinia striiformis f. sp. tritici)

<400> 1

Met Ala Ser Lys Ala Val Tyr Leu Leu Gly Gly Pro Ser Lys Gly Thr

1 5 10 15

Arg Met Arg Pro Leu Thr Leu Asp Ile Pro Lys Pro Leu Phe Pro Leu

20 25 30

Ala Gly Arg Ala Ile Ile Trp His Gly Ile Gln Ala Leu Ser Lys Ile

35 40 45

Pro Asp Leu Lys Glu Val Leu Leu Ile Gly Phe Tyr Glu Asp Ser Val

50 55 60

Leu Ala Pro Phe Ile Lys Gln Ala Ser Arg Asp Phe Pro Ser Val Gln

65 70 75 80

Ile Lys Tyr Met Arg Glu Tyr Glu Ala Leu Gly Thr Ala Gly Gly Leu

85 90 95

Tyr His Phe Arg Asp Ala Ile Leu Lys Gly Ser Pro Glu Gln Ile Tyr

100 105 110

Val Leu His Ser Asp Ile Ala Ser Ser Phe Pro Leu Leu Glu Leu Lys

115 120 125

His Phe His Asp Lys His Arg Gly Val Gly Thr Leu Met Ala Val Arg

130 135 140

Val Ser Lys Gln Leu Ser Thr Lys Phe Gly Cys Ile Val Thr Asn Pro

145 150 155 160

Glu Thr Ser Gln Ala Leu His Tyr Val Glu Lys Pro Glu Ser Phe Leu

165 170 175

Ser Glu Ile Ile Asn Thr Gly Val Tyr Leu Phe Asp Lys Ser Ile Phe

180 185 190

Asp Glu Ile Lys Ala Ala Met Asp Leu Lys Val Lys Gln Ser Val Asp

195 200 205

Asp Pro Leu Ser Arg Gln Asp Asp Leu Leu Arg Leu Glu Gln Asp Val

210 215 220

Ile Ser Pro Leu Ala Asp Arg Gly Lys Leu Tyr Val Tyr Glu Thr Lys

225 230 235 240

Ser Leu Trp Lys Gln Ile Lys Thr Ala Gly Ser Ala Leu Pro Ala Asn

245 250 255

Thr Leu Val Leu Glu Ser Tyr Lys Ser Asn Asn Pro Val Leu Leu Arg

260 265 270

Arg Arg Ser Pro Thr Ile Ile Ala Lys Ala Pro Pro Thr Asn Val Leu

275 280 285

Gly Pro Glu Ile Val Glu Pro Cys Tyr Ile Asp Glu Thr Ala Val Ile

290 295 300

Asp Pro Ser Ala Lys Ile Gly Pro Asn Val Ser Ile Gly Ala Asn Val

305 310 315 320

Lys Ile Gly Phe Gly Val Arg Val Arg Asp Ser Ile Val Leu Asp Asn

325 330 335

Ser Val Leu Glu Gln Asn Ser Cys Val Met Phe Ser Ile Leu Ser Glu

340 345 350

Asp Thr Lys Ile Gly Pro Trp Ala Arg Val Glu Gly Cys Pro Asp Val

355 360 365

Ser Asp Ala Ser Asp Asn Lys Phe Ser Ile Ser Val Leu Ala Lys Asp

370 375 380

Val Glu Val Lys Ser Glu Ile His Val Arg Ser Cys Ile Val Leu Pro

385 390 395 400

His Lys Thr Leu Gly Arg Ser Ser Ala Asn Glu Val Leu Leu

405 410

<210> 2

<211> 1774

<212> DNA

<213> Puccinia striiformis wheat specialization type (Puccinia striiformis f. sp. tritici)

<400> 2

atggcttcga aagctgtcta tctactcggc ggtcctagca aggtaaagag acgaataccg 60

accacaattt cgaatgctac gttccgatct tgagaagctt aactgaccct ttcttactac 120

taaacctatg tctagggtac tcgaatgcgt cccttgacgc tcgatatccc caagccgctg 180

tttccactcg ccggtagagc aatcatctgg catgggatcc aagccctgtc caagattccc 240

gatctgaagg aagtcctact tatcggattc tacgaggact cggtactggc tccatttatc 300

aagcaggcta gccgggactt cccttccgtt caaatcaagt cagccccctc ctttccctcc 360

atccgacatc atccgaatta tcgttgactg acgctcgatc gatcgtcttt accgatatga 420

tgtgacagat acatgcgcga atacgaagcg cttggtacgg ctggagggct ctatcatttc 480

cgagatgcga tcctgaaagg ctcgcccgaa cagatctacg tgctccactc agacatagcc 540

tcctcgttcc cgctcctcga gctgaagcac tttcacgata agcatcgtgg cgtgggcacc 600

ctcatggccg ttcgggtctc caagcaactc tcgaccaagt tcggttgtat cgtcaccaac 660

ccagagacct ctcaggctct gcattacgtc gagaaaccgg aatcattcct ctccgaaatc 720

atcaatactg gcgtctatct cttcgataaa tctatcttcg atgaaatcaa agccgccatg 780

gatctaaagg tcaaacagtc ggtgtgagtt tttcgtcttc tctctctcac tttcacgcca 840

aaaaatcatc ttcaacgttc ggctttaatt aactggattg gttctgtgtt cttgcttcaa 900

gtgatgaccc tctttctcgt caggacgatc tattacgact tgaacaagac gtcatctccc 960

ccttagccga tcgtggaaaa ctctacgtat acgagaccaa gtcgctttgg aaacaaatca 1020

agacagctgg gtgagtcagc tacattttga ttttttttac ttaaggacct gggaagcgtg 1080

gcgctaacag ccccccgatc gttttacagc tctgccttac cggccaacac gcttgttctc 1140

gaatcgtaca agtccaacaa tccagtgctt ctccgtcgac gatcgccaac gatcatcgcc 1200

aaagcgccac caacgaacgt actcggaccg gagattgtag aaccctgtta catcgatgag 1260

acggcggtaa ttgacccatc ggccaagatt ggtccgaacg tctctattgg tgccaacgtc 1320

aagattggct ttggtgtccg ggtcagggac tcgatcgtcc tcgataatag cgtcctcgaa 1380

gtgagttcga ccctccccac acatctgaaa ttcccggttc taattcattt tatcccagca 1440

aaatagctgc gtcatgttct ccatcctcag tgaggacacc aagattggtc catgggcccg 1500

agtcgaaggc tgtcccgacg tcagcgatgc cagtgacaac aaattcagta tctcagtctt 1560

gggtaagcga aagatccctg atctatcttt tctcatgatc ctagtctgtt atttttttgt 1620

cacgtgatac tgatcaatct tttatctctg tacgatcgcc ctcgtgatgg tagccaagga 1680

tgtcgaagtc aagagcgaga tacacgtcag gagttgtatc gttttgcccc acaagacttt 1740

gggtagatcg tccgccaacg aggtcttgtt atga 1774

<210> 3

<211> 1245

<212> DNA

<213> Puccinia striiformis wheat specialization type (Puccinia striiformis f. sp. tritici)

<400> 3

atggcttcga aagctgtcta tctactcggc ggtcctagca agggtactcg aatgcgtccc 60

ttgacgctcg atatccccaa gccgctgttt ccactcgccg gtagagcaat catctggcat 120

gggatccaag ccctgtccaa gattcccgat ctgaaggaag tcctacttat cggattctac 180

gaggactcgg tactggctcc atttatcaag caggctagcc gggacttccc ttccgttcaa 240

atcaaataca tgcgcgaata cgaagcgctt ggtacggctg gagggctcta tcatttccga 300

gatgcgatcc tgaaaggctc gcccgaacag atctacgtgc tccactcaga catagcctcc 360

tcgttcccgc tcctcgagct gaagcacttt cacgataagc atcgtggcgt gggcaccctc 420

atggccgttc gggtctccaa gcaactctcg accaagttcg gttgtatcgt caccaaccca 480

gagacctctc aggctctgca ttacgtcgag aaaccggaat cattcctctc cgaaatcatc 540

aatactggcg tctatctctt cgataaatct atcttcgatg aaatcaaagc cgccatggat 600

ctaaaggtca aacagtcggt tgatgaccct ctttctcgtc aggacgatct attacgactt 660

gaacaagacg tcatctcccc cttagccgat cgtggaaaac tctacgtata cgagaccaag 720

tcgctttgga aacaaatcaa gacagctggc tctgccttac cggccaacac gcttgttctc 780

gaatcgtaca agtccaacaa tccagtgctt ctccgtcgac gatcgccaac gatcatcgcc 840

aaagcgccac caacgaacgt actcggaccg gagattgtag aaccctgtta catcgatgag 900

acggcggtaa ttgacccatc ggccaagatt ggtccgaacg tctctattgg tgccaacgtc 960

aagattggct ttggtgtccg ggtcagggac tcgatcgtcc tcgataatag cgtcctcgaa 1020

caaaatagct gcgtcatgtt ctccatcctc agtgaggaca ccaagattgg tccatgggcc 1080

cgagtcgaag gctgtcccga cgtcagcgat gccagtgaca acaaattcag tatctcagtc 1140

ttggccaagg atgtcgaagt caagagcgag atacacgtca ggagttgtat cgttttgccc 1200

cacaagactt tgggtagatc gtccgccaac gaggtcttgt tatga 1245