Application of arabidopsis AtACS2 gene in cotton drought resisting and early maturing

A technology of Arabidopsis thaliana and cotton, applied in the field of genetic engineering

Active Publication Date: 2015-11-04
HENAN UNIVERSITY
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  • Application Information

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Problems solved by technology

However, it is not yet known whether the expression activity of ACS2 is related to the maturation and senescence p

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  • Application of arabidopsis AtACS2 gene in cotton drought resisting and early maturing
  • Application of arabidopsis AtACS2 gene in cotton drought resisting and early maturing
  • Application of arabidopsis AtACS2 gene in cotton drought resisting and early maturing

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Example Embodiment

[0036] Example 1

[0037] Model plant Arabidopsis ( Arabidopsis thaliana L.) Provide good genetic material for revealing various physiological response mechanisms of plants. The study on the expression and regulation of related genes in Arabidopsis thaliana and the mechanism of plant response to water shortage and drought, water absorption and utilization can provide good clues and reference for the research of other large genome crops. Therefore, this example introduces the model plant simulation Research status of AtACS2 gene in Arabidopsis.

[0038] Arabidopsis AtACS2 (the number in the Arabidopsis genome is At1g01480) encodes an ACC synthase isoenzyme in Arabidopsis thaliana. The CDS is 1491 bp in length and encodes a protein of 496 amino acids.

[0039] Experimental Materials: The Arabidopsis AtACS2 loss-of-function mutant is a T-DNA insertion mutant, purchased from the Arabidopsis Resource Center (ABRC, Ohio State University).

[0040] Purpose: The drought resistance of Ara...

Example Embodiment

[0051] Example 2

[0052] The GhACS2 gene of upland cotton is coded as GenBank: ABA00145.1 or DQ174260.1; the CDS length of this gene is 2296 bp, which encodes a protein of 663 amino acids, and the encoded protein belongs to the ACC synthase isoenzyme.

[0053] Upland cotton GhACS2 and Arabidopsis AtACS2 are homologous genes. Studies have shown that the sequence homology of the encoded protein is 63.17% (Data from the National Center for Biotechnology Information in the United States, such as figure 1 Shown), one of the highest values ​​in the known ACS protein sequence comparison. Therefore, based on the functional study of the Arabidopsis AtACS2 gene in Example 1, the inventor believes that by enhancing the expression of the Arabidopsis AtACS2 gene and transfecting it into cotton, it is possible to give cotton drought tolerance, early maturity of cotton fiber without premature aging and other agronomic traits. On this basis, the inventor further conducted verification tests, wh...

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Abstract

The invention belongs to the technical field of genetic engineering and particularly relates to application of an arabidopsis AtACS2 gene in cotton drought resisting and early maturing. The number of the gene is At1g01480, the CDS length of the gene is 1491bp, the gene encodes 496 amino acid, and encoding protein belongs to one of ACC synthetase isoenzyme. When the gene is expressed in an enhanced manner and then used to transfect cotton, drought-resistant genetically modified cotton new lines or varieties which mature early without premature senescence can be acquired. Planting experiments show that compared with non-genetically modified cotton, during an extreme drought, the genetically modified cotton has the advantages that the genetically modified cotton has developed roots, lateral roots of the cotton are increased evidently, cotton plant internode shortening is achieved, moisture acquiring, transportation and utilization are benefited, and cotton drought resistance is enhanced; the genetically modified cotton blooms and opens bolls in advance, premature senescence is avoided, cotton fiber yield and quality are increased slightly, early maturing without premature senescence is achieved, and good popularization and application value is achieved.

Description

technical field [0001] The application belongs to the technical field of genetic engineering, and specifically relates to the application of Arabidopsis thaliana ACS2 gene (AtACS2) gene in drought resistance and early maturity of cotton. Background technique [0002] Drought and water shortage endanger crop production. Water shortage factors mainly include: first, the environment is dry and water-scarce, and plants have no water available due to factors such as uneven distribution of rainwater and seasonal water shortages; Water absorption and transportation capacity is low, water transportation and utilization obstacles in cells, and high temperature causes excessive water evaporation in plants, etc. Taking cotton production in central and northern my country as an example: during the vegetative growth period of cotton, it often encounters stresses such as high temperature in summer, drought and water shortage, while the cotton harvest period often encounters unfavorable m...

Claims

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Application Information

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IPC IPC(8): C12N15/29C12N15/52C12N15/82A01H5/00
Inventor 江静韩栓张华梁勋张治恩
Owner HENAN UNIVERSITY
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