This invention discloses a
gene regulating resistance to Huanglongbing (HLB) in citrus. CsXCP2 and its applications, the regulatory genes CsXCP2 The
nucleotide sequence is shown in SEQ ID No. 1. The
amino acid sequence of the
protein CsXCP2 is shown in SEQ ID No. 2. This invention is the first to clone and identify the citrus
cysteine
protease gene. CsXCP2 The function of [the substance] was revealed, showing that it is an important regulatory hub in the citrus
immune signaling pathway and has antibacterial effects. This invention confirms that [the substance]... CsXCP2 By specifically enhancing the activation of the
salicylic acid signaling pathway and directly inhibiting the growth of Huanglongbing
fungus, citrus fruits are conferred resistance to Huanglongbing. Compared with existing findings, CsXCP2 This provides a new breeding target with a clear
mechanism of action and significant
disease resistance, which can alleviate the shortcomings of insufficient or limited effectiveness of existing resistance
gene resources.