This invention discloses the CsGSTU8
gene of tea
plant and its application in alleviating and degrading
glyphosate toxicity, relating to the field of
genetic engineering technology. The
nucleotide sequence of the CsGSTU8
gene is shown in SEQ ID NO.1 of the sequence listing. The
amino acid sequence of the
protein encoded by the CsGSTU8
gene is shown in SEQ ID NO.2 of the sequence listing. CsGSTU8 is upregulated in both roots and leaves in response to
glyphosate stress; CsGSTU8 is specifically highly expressed in tea
plant roots. The pCAMBIA1305
plasmid (containing a GFP tag) constructed from this gene, after transformation with
Agrobacterium and infection of tobacco leaves, was observed to be localized in the
nucleus and
cytoplasm. The CsGSTU8
protein is expressed in prokaryotes, and its
enzyme activity is strongest at pH 8.0. Transforming the pYES2
plasmid constructed from this gene into the
glyphosate-sensitive strain BY4741 restored the growth ability of the
yeast mutant on high-concentration glyphosate medium. The
cloning of this gene elucidates its role in tea
plant resistance to glyphosate stress, providing data support for research on the molecular mechanisms of tea plant resistance to glyphosate stress.