A kind of wild rice smut haploid strain uemtsp and its application

A haploid and bacterial strain technology, applied in the fields of application, fungi, plant cultivation, etc., can solve problems such as the trouble of artificial pregnancy and the easy production of gray water

Active Publication Date: 2021-06-08
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] During the long-term research, the applicant found that the haploid strain UEMT3 (the mating genotype is a3b3, which has been disclosed in the invention patent of CN105838617A and the preservation number is: CGMCCNo.11842) and UEMT2 (the mating genotype is a2b2, the strain has been disclosed in the invention patent of CN105838618A, the preservation number is: CGMCC No.11841), when UEMT3 and UEMT2 are co-cultured with two sexually compatible Ustilago smut, the colonies cultured in vitro from The yeast type changes to the mycelium type, and the colony grows aerial hyphae. The mycelia can infect Zizania and make Zizania pregnant, but it is easy to produce gray Zizania
Due to the emergence of the above situation, unnecessary troubles have been brought to the artificial pregnancy

Method used

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  • A kind of wild rice smut haploid strain uemtsp and its application
  • A kind of wild rice smut haploid strain uemtsp and its application
  • A kind of wild rice smut haploid strain uemtsp and its application

Examples

Experimental program
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Effect test

example 1

[0024] Example 1: Genomic DNA extraction from Ustilago smut UET1 strain (the mating genotype is a1b1, the strain has been disclosed in the invention patent of CN 105838616 A, and the preservation number is CGMCC No.11843)

[0025] 1. Heat the CTAB extract in a water bath at 65°C half an hour in advance.

[0026] 2. Take UET1 bacteria (thickness about 5mm) into a 2.0mL centrifuge tube with a pipette tip, add about 10 stainless steel balls (diameter 1mm), and mark. In the fume hood, add 800ul preheated CTAB extraction solution. The vibrating instrument is 70Hz, vibrate for 150s, and break up the bacteria.

[0027] 3. Water bath at 65°C for 1 hour.

[0028] 4. Add an equal volume of phenol: chloroform: isoamyl alcohol (25:24:1), and mix well.

[0029] 5. In the fume hood, let stand at room temperature for 15 minutes. Centrifuge at 10000rpm for 10min at room temperature. At this time, stratification occurs in the centrifuge tube. The supernatant contains nucleic acid, the mid...

example 2

[0035] Example 2: mfa1.2 gene cloning

[0036] Using the genomic DNA in the UET1 bacterial strain obtained in Example 1 as a template, according to the designed mfa1.2F and mfa1.2R primers, clone mfa1.2 Gene. The nucleotide sequence of mfa1.2F is shown in SEQ ID No.1, and the nucleotide sequence of mfa1.2R is shown in SEQ ID No.2.

[0037] PCR amplification system: (50 ul)

[0038] 10×PCR buffer (takara) 5ul

[0039] dNTP mix (takara) 4ul

[0040] mfa1.2F 1ul

[0041] mfa1.2R 1ul

[0042] LATaq (takara) 0.5ul

[0043] dd H2O 37.5ul

[0044] UET1 DNA 1ul

[0045] The PCR reaction conditions are as follows:

[0046]

[0047] PCR products were detected by 1% agarose gel electrophoresis. After cutting the gel, the product was recovered with the Magen Gel DNA Mini Recovery Kit. Store in a -20°C refrigerator for later use.

example 3

[0048] Example 3: E1 gene cloning

[0049] Using the genomic DNA in the UET1 bacterial strain obtained in Example 1 as a template, carry out PCR according to the designed bE1F and bE1R primers, and clone E1 Gene. The nucleotide sequence of bE1F is shown in SEQ ID No.3, and the nucleotide sequence of bE1R is shown in SEQ ID No.4.

[0050] PCR amplification system: (50 ul)

[0051] 10×PCR buffer (takara) 5ul

[0052] dNTP mix (takara) 4ul

[0053] bE1F 1ul

[0054] bE1R 1ul

[0055] LATaq (takara) 0.5ul

[0056] dd H 2 O 37.5ul

[0057] UET1 DNA 1 μl

[0058] The PCR reaction conditions are as follows:

[0059]

[0060] PCR products were detected by 1% agarose gel electrophoresis. After cutting the gel, the product was recovered with the Magen Gel DNA Mini Recovery Kit. Store in a -20°C refrigerator for later use.

[0061] mfa1.2 and E1 Gene electrophoresis amplification picture as image 3 shown. mfa1.2 The nucleotide sequence is shown in SEQ ID No.5, ...

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Abstract

The invention relates to a haploid strain of Ustilago smut UeMTSP and its application, belonging to the field of biotechnology. On the one hand, the present invention provides a new Ustilago smut haploid strain UeMTSP, and on the other hand provides the use of the Ustilago smut haploid strain UeMTSP in pregnant bamboo. Beneficial effects of the present invention: the smut fungus of the present invention ( Ustilago esculenta ) The haploid strain UeMTSP can directly infect Zizania japonica plants and make Zizania zizania gestation without producing teliospores, that is, without the unfavorable phenotype of gray horns, which provides a new idea for zizania zizania artificial pregnancy.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a haploid strain of Ustilago smut UeMTSP and an application thereof. Background technique [0002] Ustilago smut ( Ustilago esculenta ) is a unique pathogenic fungus that infects Zizania plants ( Zizania latifolia ) After that, it can inhibit the heading and flowering of the plants and stimulate the expansion of the base of the stem to form edible wild rice stems. In East Asia and Southeast Asia, especially China, Zizania is a highly nutritious aquatic vegetable and an important medicinal material. However, in the field, there are often gray water bamboos full of teliospores and sesame water bamboos formed by a small amount of teliospores, which are easy to cause pneumonia after being eaten by mistake, which is not conducive to the development of the water bamboo industry. In view of the successful development of artificial breeding technology, how to control the form...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/14A01G22/00A01G7/06C12R1/645
CPCA01G7/06A01G22/00C12N1/145C12R2001/645
Inventor 叶子弘张雅芬于金梦夏文强俞晓平崔海峰
Owner CHINA JILIANG UNIV
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