Abstract: The use of 2-amino-3-phenylbutyric acid or 2,6-diamino-3-methylhexanoic acid as a plant immune resistance inducer. The development of 2-amino-3-phenylbutyric acid and/or 2,6-diamino-3-methylhexanoic acid as an active substance into a plant immune resistance inducer can be used to improve the resistance of plants to biotic and abiotic stresses, effectively prevent the infection and reduce the pathogenic levels of fungi, viruses, and bacteria on plants; Meanwhile, they can significantly improve the resistance of plants to high temperature, low temperature, drought and salt stresses. 2-amino-3-phenylbutyric acid and 2,6-diamino-3-methylhexanoic acid have the features of being safe, environmentally friendly and efficient.

Abstract: A use of 2-amino-3-methylhexanoic acid in promoting plant growth and increasing yield and use of the 2-amino-3-methylhexanoic acid in promoting growth of a plant seedling and/or promoting growth of a mature plant and increasing yield. The 2-amino-3-methylhexanoic acid is a natural product, has a simple structure, and is easy for industrial production. The 2-amino-3-methylhexanoic acid can promote plant growth and has the potential of being developed into a natural plant growth regulator. The 2-amino-3-methylhexanoic acid is a natural product, low in dosage, and environmentally friendly, has a remarkable promoting effect on plant growth, and thus is a green and efficient biological source plant growth regulator, which indicates the utilization value and application prospects of such substances in agricultural production.

Abstract: Disclosed is use of 2-amino-3-methylhexanoic acid as a plant immunity inducer and in the preparation of a plant immunity inducer. The development of 2-amino-3-methylhexanoic acid as an active substance into a plant immunity inducer can be used for improving the resistance of plants to biotic and abiotic stresses, effectively stop the infection and reduce the pathogenic levels of fungi, viruses and bacteria on plants, and at the same time, significantly improve the tolerance of plants to high temperature, low temperature, drought and salt stress. 2-amino-3-methylhexanoic acid has the features of being safe, environmentally friendly, and highly efficient.