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Application of Conserved Fragment cfo of Soybean Mosaic Virus and Inverted Repeat Vector Constructed from Soybean Mosaic Virus in Broad Spectrum Resistance of Soybean to SMV

A technology of soybean mosaic virus and inverted repeat sequence, applied in the direction of virus/bacteriophage, virus, application, etc., can solve problems affecting soybean yield and quality, long polymerization cycle, etc.

Active Publication Date: 2022-03-29
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SMV resistance gene has not yet been cloned
The method of disease resistance gene aggregation can improve the disease resistance of soybean, but it will affect the yield and quality of soybean (that is, there is the cost of disease resistance) and the aggregation period is longer
In addition, SMV mutations leading to its breakthrough host resistance often occur

Method used

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  • Application of Conserved Fragment cfo of Soybean Mosaic Virus and Inverted Repeat Vector Constructed from Soybean Mosaic Virus in Broad Spectrum Resistance of Soybean to SMV
  • Application of Conserved Fragment cfo of Soybean Mosaic Virus and Inverted Repeat Vector Constructed from Soybean Mosaic Virus in Broad Spectrum Resistance of Soybean to SMV
  • Application of Conserved Fragment cfo of Soybean Mosaic Virus and Inverted Repeat Vector Constructed from Soybean Mosaic Virus in Broad Spectrum Resistance of Soybean to SMV

Examples

Experimental program
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Effect test

Embodiment 1

[0025] CFO-TIR Vector pB7GWIWG2(II)-CFO Constructed from SMV Conserved Fragment CFO Mediates Broad Spectrum Resistance to SMV in Transgenic Soybean

[0026] (1) The conserved fragment CFO was obtained by multiple sequence alignment, identification and screening of the SMV genome:

[0027] In the NCBI database ( http: / / www.ncbi.nlm.nih.gov / ) By comparing and analyzing 30 SMV genome sequences (see Table 1 for GenBank ID).

[0028] Table 1 GenBank IDs of 30 SMV genome sequences

[0029] NC_002634.1 FJ640959.1 EU871724.1 FJ640967.1 FJ640981.1 AB100443.1 D00507.2 FJ640976.1 FJ640979.1 AJ312439.1 FJ640980.1 AY294045.1 FJ640975.1 FJ640974.1 S42280.1 FJ376388.1 FJ640957.1 FJ640971.1 FJ640972.1 FJ640966.1 FJ640955.1 FJ807701.1 FJ548849.1 FJ640954.1 FJ640968.1 EU871725.1 FJ640963.1 FJ807700.1 AY294044.1 AB100442.1

[0030] The multiple sequence alignment of these SMV genome sequences was carried out by ...

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Abstract

The invention discloses a soybean mosaic virus (SMV) conserved fragment CFO and the application of an inverted repeat vector (CFO-TIR) constructed therefrom in soybean broad-spectrum resistance to SMV. For the first time, the present invention performs multiple sequence alignment and conservation calculation on 30 SMV genome sequences, and identifies a SMV fragment CFO (nucleotide sequence is SEQ ID NO: 1) with a conservation of 92%, constructs the CFO-TIR vector and Genetically transformed into SMV-susceptible soybean variety NN1138‑2, the CFO‑TIR vector mediated the resistance of transgenic soybeans to various SMV strains, and solved the problem of broad-spectrum resistance of transgenic plants to SMV. The transgenic material obtained by the invention has important application value for cultivating SMV broad-spectrum resistant soybean.

Description

technical field [0001] The invention belongs to the field of soybean technology, and relates to the improvement of soybean resistance to soybean mosaic virus (SMV), in particular to a conservative fragment CFO of soybean mosaic virus (SMV) and an inverted repeat vector (CFO-TIR) constructed therefrom. Application of soybean for broad-spectrum resistance to SMV. Background technique [0002] Soybean is an important oil and protein crop in the world. During its growth cycle, it is often attacked by various diseases and insect pests. SMV is a serious viral disease that seriously affects soybean yield and quality. For the convenience of research, SMV was artificially divided into multiple strains based on the responses on different identified hosts, and then the specific resistance loci of SMV strains were identified accordingly. However, the SMV resistance gene has not yet been cloned. The method of disease resistance gene aggregation can improve the disease resistance of so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N15/40C12N15/84A01H5/00A01H6/54
CPCC07K14/005C12N15/8283C12N2770/34022
Inventor 盖钧镒姜华李凯
Owner NANJING AGRICULTURAL UNIVERSITY
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