Transcription factor AtGT4, coding gene thereof and applications
The invention discloses a transcription factor AtGT4, a coding gene thereof and applications. A protein provided by the invention is one of the following proteins having an amino acid residue sequence: (a) a protein having the amino acid sequence shown in a sequence 2 in a sequence table; and (b) a protein which is obtained by carrying out substitution and/or deletion and/or addition of one or more amino acid residues on the amino acid sequence shown in the sequence 2 in the sequence table. Tests prove that a gene with salt tolerance is found. The gene has important value in the aspects of culturing adverse-resistant plant varieties, particularly new varieties such as abiotic stress resistant (salt resistant) crops, forests and grass, and the like. The gene can be used for culturing and identifying adverse-resistance plant varieties which are required by the agriculture and animal husbandry and by ecological environment management, and has important meaning to improvement of the crop yield. 1. A protein, is the following (a) or (b): (A) the sequence in the sequence table 2 shows the amino acid sequence of the protein; (B) the sequence of the sequence table 2 amino acid sequence as shown in one or several amino acid residues substituted and/or missing and/or adding and with plant stress tolerance related by sequence 2 derived protein. 2. Coding claim 1 wherein the protein gene. 3. Gene according to Claim 2, characterized in that said gene is the following (1)-(4) in the DNA molecule of any one of: (1) sequence of the sequence table 1 molecular DNA shown in; (2) sequence of the sequence table 1 since 5 the terminal [...] 1-1116 position nucleotide of the DNA molecule is shown; (3) the under stringent conditions (1) or (2) hybridization of the DNA sequence defined encoding plant stress tolerance related protein DNA molecule; (4) and (1) or (2) the DNA sequence has at least 70%, at least 75%, at least 80%, at least 85%, at least 90%, at least 95%, at least 96%, at least 97%, at least 98% or at least 99% and homoeology encoding plant stress tolerance related protein DNA molecule. 4. Containing claim 2 or 3 wherein the encoding gene of the recombinant vector, expression cassette, transgenic cell lines or recombinant bacteria. 5. The recombinant vector according to Claim 4, characterized in that For the recombinant vector of claim 1 wherein the protein coding gene inserted into the expression vector, the expression of claim 1 wherein the recombinant vector of the protein. 6. Amplification claim 2 or 3 the gene or its arbitrary fragment full length of the primer pair. 7. Claim 1 the protein, of claim 2 or 3 wherein the coding gene or claim 4 wherein the recombinant vector, expression cassette, transgenic cell lines or recombination in the application of plant stress tolerance; The regulating plant stress tolerance in particular to improve plant stress tolerance or reduce plant stress tolerance; the specific stress resistant to salt tolerance; The stated plant in particular to a dicotyledonous plant or a monocotyledonous plant, the further specific dicotyledonous plant is Arabidopsis thaliana. 8. A method of cultivating the transgenic plant, for the claim 1 wherein the protein coding gene into purpose plant, obtaining transgenic plant, the stress tolerance of transgenic plants is higher than the stated purpose plant. 9. Method according to Claim 8, characterized in that the for states bears counter salt tolerance; Claim 1 the said protein coding gene of claim 4 or 5 is of the recombinant vector into the plant; The stated purpose plant in particular to a dicotyledonous plant or a monocotyledonous plant, the further the dicotyledonous plant Arabidopsis thaliana; The further specific salt-resistant expression by improving the survival rate. 10. A method for reducing plant stress tolerance, the purpose is to reduce plant in claim 1 the expression of the protein encoding gene, to obtain stress tolerance less than the stated purpose plant; For the salt tolerance states bears counter ; the salt resistant less than the stated purpose plant specific embodied in base of lotus flower diameter is smaller than said purpose plant; The stated purpose plant is a dicotyledonous plant or a monocotyledonous plant, the dicotyledonous plants are Arabidopsis thaliana is a step.