Protein derived from chinese wildrye and related to saltresistance and encoding gene and application of protein

Abstract

The invention discloses a protein derived from chinese wildrye and related to saltresistance and an encoding gene and application of the protein. The protein provided by the invention is (a) or (b), wherein (a) is a protein consisting of an amino acid sequence shown in the sequence 1 in a sequence table and (b) is a protein which is obtained by substituting and / or losing and / or adding one or more amino acid residues of the amino acid sequence shown in the sequence 1, is related to plant saltresistance and is derived from the sequence 1. The protein provided by the invention and the encoding gene of the protein can be used as candidate genes of plant saltresistance genetic engineering and used for improving the saltresistance of plants. Twenty one days after salt stress (200Mm NaCl) treatment, all LcMYB7342 gene modified Arabidopsis seedlings are normal in phenotype, but 78.6% of wild Arabidopsis seedlings have salt damage symptoms, get wilting and turn yellow. LcMYB7342 gene can be used for cultivating and identifying varieties of resistance plants which are needed in agriculture, husbandry and ecological environmental management and has a high practical application value and a bright application prospect in agriculture and husbandry.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to a protein derived from Leymus chinensis and related to plant salt resistance, its coding gene and application. Background technique [0002] Unfavorable natural environment, such as low temperature, high temperature, drought and salinity, will cause a series of physiological metabolic reactions in plants, manifested as reversible inhibition of metabolism and growth, and even cause irreversible damage in severe cases, resulting in the loss of the entire plant. die. Salt stress destroys the ion balance in plants, causing osmotic stress, which in turn causes a series of physiological and metabolic reactions in plants, affecting the growth and development of plants. Today 20% of the world's farmland is affected by high-salt stress, which reduces crop yields and greatly affects agricultural production. Due to the complexity of the salt tolerance of plants, which is controlled by multiple ...

AI Technical Summary

Problems solved by technology

Today 20% of the world's farmland is affected by high-salt stress, which reduces crop yields and greatly affects agricultural production

Due to the complexity of the salt tolerance of plants, which is controlled by multiple genes, it is very difficult to improve the salt tolerance of crops using traditional breeding methods

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