Table 4 Contents of catechins (mg/g fresh weight) and caffeine in the leaves of tea plant treated with methionine sulfoximine (MSX). The value shown is mean ± standard deviation (SD). CK indicates plants grown without MSX treated, while MSX indicates plants treated with MSX. The asterisk indicates significant difference between MSX and CK group (*P < 0.05, **P < 0.01 in student’s t-test). For each treatment, 3 biological replicates were applied

From: Short-term inhibition of glutamine synthetase leads to reprogramming of amino acid and lipid metabolism in roots and leaves of tea plant (Camellia sinensis L.)