A new use of a purine derivative and a method for recruiting probiotics based on purine derivatives to improve the salt tolerance of highland barley

Abstract

The present application belongs to the field of agricultural biotechnology, and particularly relates to a new use of a purine derivative and a method for improving salt tolerance of highland barley by recruiting growth-promoting bacteria based on the purine derivative, and a strain, characterized by the following: the purine derivative is applied to the preparation of a microbial chemotactic agent for directional recruitment of rhizosphere beneficial Pseudomonas; the strain is Pseudomonas sp. P3 strain, and the 16S rDNA sequence of the strain is shown as SEQ ID NO: 1; and the highland barley is the Tibetan Qing 320 variety or the Longzi black highland barley. The present application breaks through the current situation of single type of signal molecule and poor specificity of recruitment, uses the purine derivative as a chemotactic signal to induce directional migration to a specific space, and can systematically and directionally explore the plant actively released under adverse stress, accurately, efficiently and specifically recruit multifunctional growth-promoting bacteria for recruiting specific beneficial microorganisms.

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