The invention discloses a
tea tree CsBZR1
gene and
cold resistance application thereof, the
tea tree CsBZR1
gene is a
core gene in a
tea tree brassinolide signal transduction pathway, and the
nucleotide sequence of the tea tree CsBZR1
gene is shown as SEQ ID NO.1 in a sequence table. According to the application of the CsBZR1 gene of the tea tree to regulation and control of
cold resistance of the tea tree, the low-temperature tolerance of the tea tree can be reduced by inhibiting expression of the CsBZR1 gene
in vivo, and the
cold resistance of
arabidopsis thaliana is improved by overexpression of the CsBZR1 gene. Expression of CsBZR1 of a tea tree under a low-temperature condition is directly induced to be up-regulated by low-
temperature stress of the tea tree, cold resistance of
arabidopsis thaliana is improved by overexpression of the gene in the
arabidopsis thaliana, and low-temperature damage of the tea tree can be remarkably aggravated by inhibiting expression of CsBZR1 in the tea tree through an antisense
oligonucleotide technology. The
cloning of the gene not only is beneficial to determining the effects of
brassinolide and the
signal transduction core factor BZR1 thereof in the cold-resistant process of the tea tree, but also is beneficial to promoting the genetic improvement process aiming at enhancing the cold resistance of the tea tree.