Protein MtCBF4 associated with stress tolerance of plants, encoding gene and application thereof

Abstract

The invention discloses a protein MtCBF4 associated with the stress tolerance of plants, an encoding gene and application thereof. The protein provided by the invention is a protein as the following (a) or (b): (a) the protein consisting of an amino acid sequence shown by a sequence 1 in a sequence table; and (b) the protein which is prepared by carrying out substitution and/or deletion and/or addition of one or more amino acid residues on the amino acid sequence in the sequence 1, is associated with the stress tolerance of plants and is derived from the sequence 1. The MtCBF4 gene participates in salt stress and drought stress response reactions of medicago truncatula. A transgenic plant, of which the stress tolerance is obviously higher than a starting plant, can be obtained by introducing the MtCBF4 gene into the starting plant. The invention has important value for cultivation of transgenic leguminous crops with salt tolerance and drought tolerance.

Description

technical field [0001] The invention relates to a plant stress tolerance related protein MtCBF4 and its coding gene and application. Background technique [0002] As one of the main negative factors affecting grain yield and quality in the world, salt stress can cause harm to many crops. Under the condition of salt stress, the growth, development and biomass of crops will be greatly affected, especially the yield reduction of some crops that depend on irrigation is more obvious. More than one-fifth of the cultivated land in the world is threatened by salt stress, and in the context of global population growth and increasingly serious environmental pollution, the problem of salinization of land has become more prominent and has become a key to normal social and economic development. resistance. [0003] The adaptation of plants to salt stress in the natural environment is a complex process, which depends on the cascade activation of a series of molecular networks, namely: t...

AI Technical Summary

Problems solved by technology

Although many salt-tolerance-related genes have been obtained, most of these genes come from the model organism Arabidopsis. Since the expression patterns of salt-tolerance genes are significantly different among different species, the salt-tolerance genes of Arabidopsis are transformed into other plants. These plants must be able to have a salt-tolerant phenotype, so it is necessary to study the salt-tolerant mechanism of various plants in depth and dig out salt-tolerant genes

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