Significance (※) of components when sample grouping is based on P. halepensis microclimate

CompoundVIP (PLS-DA)P-value (t-test)Log2 fold change
2-Nonanol1.50751.69E-05–0.6876
Linalool1.35719.50E-04–0.8169
Fenchol1.22042.25E-04–0.6329
α-Terpinolene1.18780.0564–0.5081
Camphene1.17240.2047–0.2996
Myrtenol1.13058.28E-03–0.4599
α-Terpineol1.13045.55E-03–0.6252
Limonene1.11261.50E-03–0.5128
p-Cymene0.93310.1194–0.1986
2-Nonanone0.92180.0251–0.2700
γ-Terpinene0.91910.0241–0.5793
Estragole0.89259.86E-03–0.6378
1,4-Cineole0.85890.0153–1.2947
Terpinen-4-ol0.85700.0167–0.8868
β-Caryophyllene0.84210.1480–0.3191
Endo-borneol0.73110.0415–0.2848
α-Copaene0.56410.96190.0111
α-Pinene0.48050.5551–0.2401
β-Myrcene0.43690.5644–0.1182

※: significant values with VIP > 1.0 for multivariate analysis and P < 0.05 for univariate analysis are denoted in bold; †: a negative Log2 fold change indicates a direction towards group of microclimate B