“However, the total shoot catechins content was significantly higher for NO3(-) treatments than that for NH4(+) treatment or combined NH4(+)+NO3(-) treatment, suggesting that, in addition to its influence on plant growth, the nitrogen form regulated the accumulation of catechins in tea.”
“The expression of catechins biosynthesis-related genes was associated with the regulation of catechins accumulation and composition changes mediated by nitrogen form.”