Fig. 9
From: Transcriptome and metabolome analysis in shoot and root of Valeriana fauriei
PCA score plots (a) and loading plots (b) derived from polar metabolites of shoot and root of V. fauriei. PC1 and PC2 accounted for >98.2 % of the total variance. The ellipse represents the Hotelling T2 with 95 % confidence in the score plot. The loading plots represent the original variables in the space of the PCs. They reveal the magnitude and direction of correlation of the original variables with the first two PCs. 1, lactic acid; 2, valine; 3, alanine; 4, glycolic acid; 5, serine; 6, ethanolamine; 7, glycerol; 8, isoleucine; 9, proline; 10, nicotinic acid; 11, glycine; 12, succinic acid; 13, glyceric acid; 14, fumaric acid; 15, threonine; 16, β-alanine; 17, malic acid; 18, aspartic acid; 19, methionine; 20, pyroglutamic acid; 21, 4-aminobutyric acid; 22, threonic acid; 23, arginine; 24, glutamic acid; 25, phenylalanine; 26, xylose; 27, asparagine; 28, glutamine; 29, shikimic acid; 30, citric acid; 31, quinic acid; 32, fructose; 33, galactose; 34, glucose; 35, mannose; 36, mannitol; 37, inositol; 38, tryptophan; 39, sucrose; 40, maltose; 41, trehalose; 42, raffinose