Qifang Jin, Zhong Wang, Devinder Sandhu, Lan Chen, Chenyu Shao, Siyi Xie, Fanghuizi Shang, Shuai Wen, Ting Wu, Huiying Jin, Feiyi Huang, Guizhi Liu, Jinyu Hu, Qin Su, Mengdi Huang, Qian Zhu, Biao Zhou, Lihua Zhu, Lvwen Peng, Zhonghua Liu, Jianan Huang, Na Tian, Shuoqian Liu
Theobromine is an important quality component in tea plants ( Camellia sinensis ), which is produced from 7-methylxanthine by theobromine synthase ( CsTbS ), the key rate-limiting enzyme in theobromine biosynthetic pathway. Our transcriptomics and widely targeted metabolomics analyses suggested that CsMYB114 acted as a potential hub gene involved in the regulation of theobromine biosynthesis. The inhibition of CsMYB114 expression using antisense oligonucleotides (ASO) led to a 70.21% reduction of theobromine level in leaves of the tea plant, which verified the involvement of CsMYB114 in theobromine biosynthesis...
February 20, 2024: Journal of Agricultural and Food Chemistry