Biomarker metabolites capturing the metabolite variance present in a rice plant developmental period

BMC Plant Biology

Table 1 The selected biomarker metabolites, and the combinations of loadings on principal components that they represent. The set of biomarker metabolites selected to capture much of the variance in metabolite composition of a rice tillering event is listed. The selection procedure constrained the biomarker metabolites to represent variation in loading on the top three principal components in the standardized centered metabolite space of an analysis of a comprehensive metabolomics dataset. The loading of the individual metabolite on the principal components is symbolically represented: high positive loading (POS), weak loading (---), or high negative loading (NEG).

Biomarker metabolite	Principal Component 1 loading	Principal Component 2 loading	Principal Component 3 loading
Trehalose	NEG	NEG	NEG
Citric Acid	NEG	NEG	---
Glutamic Acid	NEG	NEG	POS
Mannose	NEG	---	NEG
Phenylalanine	NEG	---	POS
gamma-Aminobutyric Acid (GABA)	NEG	POS	NEG
Lysine	NEG	POS	---
Leucine	NEG	POS	POS
Shikimic Acid	---	NEG	NEG
Succinic Acid	---	NEG	---
Pyroglutamic Acid	---	NEG	POS
Galactose	---	---	NEG
Valine	---	---	POS
p-Hydroxybenzoic Acid	---	POS	---
Thymine	---	POS	POS
Malic Acid	POS	NEG	NEG
Salicylic Acid	POS	NEG	---
Oxalic Acid	POS	---	NEG
trans-Aconitic Acid	POS	---	POS
Carbonate	POS	POS	NEG
Uracil	POS	POS	POS

ISSN: 1471-2229