The study found that the metabolism of clergy in tomato fruit regulates genes

lycoproteins are accompanied by chlorosteroid degradation, carotenoids and flavonoids in the ripening process. In the study, a team of researchers from Chongqing University found that the SlMYB72 gene plays an important role in regulating the metabolism of chlorosteroids, carotenoids and flavonoids, providing potential targets for horticultural crops to improve fruit nutrition. The results were published recently in the journal Plant Physiology.
tomato gene SlMYB72 belongs to the transcription factor R2R3-MYB sub-family, located in the nuclei of the cell, with transcription activation activity. The team found that the reduction of the SlMYB72 gene resulted in uneven fruit color, i.e. dark green spots on immature and ripe green fruits and yellow spots on red fruits.
team noted that the reduction of the SlMYB72 gene increased the accumulation of chloroerin in the fruit, the development of chlorogrethy and the rate of photoneedle. This reduction reduced lycoprotein content, promoted the production of β-carotene and the development of pigments, and increased the accumulation of flavonoids in fruits.
RNA-seq analysis showed that the reduction of the SlMYB72 gene changed the expression levels of genes associated with chlorosteroids, carotenoids and flavonoid biosynthetics. The SlMYB72 gene protein interacts with the growth hormone response factor SlARF4. The SlMYB72 gene directly targets the primary chlorophyte reductase (POR), Mg chelating enzyme, H sub-base (CHLH), etc. to regulate chlorophyte biosynthetic and chlorophyllite development.
The SlMYB72 gene also binds directly to plant ene lysase (PSY), carotene isomerase (ZISO) and lycopene β cyclinease (LCYB) genes to regulate the biosynthetic synthesis of carotenoids.
addition, the SlMYB72 gene directly targets the 4-coa connective enzyme (4CL) and Charcone synthase (CHS) genes, regulating the biosynthetic synthesis of flavonoids and phenolic acids.
and RNAi-SlMYB72 fruit color esoteric esotypes are due to the SlMYB72 gene uneconsidized and chlorosteroid, carotenoid and flavonoid biosynthetic gene expression.
the above-mentioned findings, a series of important regulatory effects of the SlMYB72 gene in tomato fruits are revealed, providing potential targets for horticultural crops to improve fruit nutrition.
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