Fig. 2: Response of green leaf volatile (GLV) biosynthesis in MeJA-primed fresh tea leaves. | Horticulture Research

Fig. 2: Response of green leaf volatile (GLV) biosynthesis in MeJA-primed fresh tea leaves.

From: Integrated proteomic and metabolomic analyses reveal the importance of aroma precursor accumulation and storage in methyl jasmonate-primed tea leaves

Fig. 2

α-Linolenic acids serve as precursors for a variety of fatty acid-derived volatile organic compounds, also known as green leaf volatiles (GLVs). This precursor enters the lipoxygenase (LOX) pathway by oxidation, yielding 9-hydroperoxy and 13-hydroperoxy intermediates that are further converted to volatiles by hydroperoxide lyases and alcohol dehydrogenases. Differentially expressed enzymes and metabolites (volatiles shown in red letters; nonvolatiles shown in blue letters) were integrated into the pathway-based maps. Jasmonic acid metabolites are also displayed. Abbreviations are shown on the upper right of this figure. Red represents an increase, and green represents a decrease. Dashed arrows indicate unverified steps and include several steps in the pathway. Detailed fold changes are shown in Supplementary Tables S1, S2, and S4. LOX lipoxygenase, AOC allene oxide cyclase, JOM jasmonate O-methyltransferase, ADH alcohol dehydrogenase, HPL hydroperoxide lyase, UGT UDP-glycosyltransferase, OPR 12-oxophytodienoic acid reductase, ALDH2 aldehyde dehydrogenase, HPL hydroperoxide lyase, MFP2 enoyl-CoA hydratase, ACAA1 acetyl-CoA acyltransferase 1, AOS allene oxide synthase, OPCL1 OPC-8:0 CoA ligase 1, MS monosaccharide, DS disaccharide, g-9,10-DiHODE (+/-)-9,10-dihydroxy-6Z,12Z-octadecadienoic acid, (+)-7-iso-JA-L-Ile (+)-7-iso-jasmonic acid-L-isoleucine

Back to article page