Claim 1: an isolated nucleic acid, The characteristics include a polynucleotide that encodes a polypeptide of a mutated Pyr / pyl receptor, including one or more amino acids inserted into the junction pocket and / or a phosphate 2 (P2C) protein binding interface compared with the polypeptides of wild-type Pyr / pyl receptors. The variant Pyr / pyl receptor was added with P2C in the absence of acrylic acid SiC. Claims Article 18: an expression band characterized by the inclusion of a promoter operationally associated with the polynucleotide in any of the 1-17 requirements,The introduction of expression bands into plants results in a Pyr / pyl receptor that binds to 2-phosphate protein (P2C) without absorbing acid. Claim 25: a plant characterized by the presence of any 18-23 required expression bands, which, in the absence of acetic acid, significantly inhibits PP2C activity. Claim 27: seeds, flowers, leaves, fruits, processed food or edible ingredients,People marked as warehouse 25 Claim 29: a method for producing a plant with enhanced stress tolerance, characterized by the installation of an expression band in a plurality of plants, The expression disk consists of a promoter operatively linked to a polynucleoside, which encodes a polypeptide of a Pyr / pyl mutant receptor, including one or more amino acid substitutes in the polymerization pocket of one or more amino acids and / or a phosphate type 2 protein binding interface (P2C) with a polypeptide From wild Pyr / pyl receiver,In the absence of acid uptake, the Pyr / Pyr mutant receptor was added to P2C； a plant expressing polynuclear was selected from multiple plants. Claim 30: the method of claim 29, which is characterized in that the polypeptides of the Pyr / pyl mutado receptor include one or more amino acid substitutes h60p / g / R / A / w / I / K / V / m, v83f / L / P, i84q / E / P / h / K, l87f, a89w, m158t / C / V / L, f159v / A, t162f, As shown in SEQ ID No.1, l166y / f or k170w in pyr1.Reivindicación 1: U
