Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 66, Issue 47, Pages 12604-12616Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.8b05345
Keywords
tea plant; miRNA-target pair; coexpression network; terpenoid volatiles; light
Funding
- National Natural Science Foundation of China [31171608]
- Special Innovative Province Construction in Anhui Province [15czs08032]
- Special Project for Central Guiding Science and Technology Innovatio of Region in Anhui Province [2016080503B024]
- Programme for Changjiang Scholars and Innovative Research Team in University [IRT1101]
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Tea, made from leaves of Camellia sinensis, has long been consumed worldwide for its unique taste and aroma. Terpenoids play important roles not only in tea beverage aroma formation, but also in the productivity and quality of tea plantation due to their significant contribution to light harvesting pigments and phytohormones. To date, however, the regulation of terpenoid synthase genes remains unclear. Herein, the analyses of metabolomics, sRNAs, degradome, and transcriptomics were performed and integrated for identifying key regulatory miRNA-target circuits on terpenoid biosynthesis in leaf tissues over five different months in which the amount of terpenoids in tea leaves varies greatly. Four classes of miRNATF pairs that might play a central role in the regulation of terpenoid biosynthesis were also uncovered. Ultimately, a hypothetical model was proposed that mature miRNAs maintained by light regulator at both the transcriptional and posttranscriptional levels negatively regulate the targets to control terpenoid biosynthesis.
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