Fig. 5

Correlation analysis between the dominant genera and significant DCs between the UAFT and AFT samples. The rounded nodes represent the genera and the square nodes represent DCs. The orange line is a positive correlation, and the blue line is a negative correlation. B2, Stenotrophomonas; B3, Pseudomonas; B4, Acinetobacter; B6, unclassified_Enterobacteriaceae; B15, Sphingomonas; B19, Ochrobactrum; B22, Caulobacter; B28, Vibrionimonas; F1, Sampaiozyma; F2, Aspergillus; F3, Alternaria; F7, Didymella; F8, Epicoccum; F10, Boeremia; B30, Bacteroides. Flavonoids: L475, proacacipetalin; L540, flazine; L608, isoscopoletin; L617, kaempferol-3-O-hexoxyl-hexoside; L660, mahaleboside; L795, dihydropanaxacol; L861, quercetin; G596, caffeic acid; G959, chlorogenic acid; L401, artemisene. Terpenoids and degradation products: L525, erogorgiaene; S88, dihydroactinidiolide; S95, megastigmatrienone A; S96, safranal; S109, β-Cyclocitral; S115, megastigmatrienone B; S144, linalool; S127, trans-geranylgeraniol; S153, 3-hydroxy-β-damascone; S208, limonene. Fatty acids, esters and relatives: L10, isostearic acid; L11, ( +)-myrtenyl formate; L188, 2E,8E-dodecadienoic acid; L262, y-linolenic acid; L684, muramic acid; L740, n-propyl carbamate; L830, picrasin; G195, glycerol; G234, glycerate; G562, palmitic acid; S85, 2-methyl-5-oxotetrahydrofuran-2-carboxylic acid; S86, dodecane; S97, propanoic acid butyl ester; S121, benzeneacetic acid methyl ester; S130, hexanoic acid methyl ester; S165, 2,8-methyl undecane; S185, 3-methyl pentadecane; S206, 4-methyl-nonane; S207, 3-methyl undecane. Aromatic compounds: L231, 3-amino-2-naphthoic acid; L376, alpha-methylphenylalanine; S21, 2-methyl-benzaldehyde; S90, benzeneacetaldehyd; S129, 1-phenyl-ethenone; S154, 2,4-dimethyl-benzaldehyde; S156, 1,2,3,4-tetrahydro-5,6,7,8-tetramethyl-Naphthalene; S161, 2,2',5,5'-tetramethyl-1,1'-Biphenyl; S180, α-ethylidene-benzeneacetaldehyde. Nicotine and degradation products: L4, nicotine; L218, 3,6-dihydronicotinic acid; L388, anatabine; L457, cotinine; L736, nornicotine; S72, 3-(1-methyl-1H-pyrrol-2-yl)- pyridine. Others: L134, 1-Naphthylamine; L138, glycerol phosphate choline; L140, 2-Aminoethyl indole; L202, 2-Methylindole; L254, 3'-Sialyllactose; L305, 5-oxo-L-proline; L446, choline; L465, D-asparagine; L496, dihydrolysergic acid amide; L893, sarcosine; L949, tryptophan; G83, alanine; G453, D-galactose; S134, 2-methyl-5-isopropenylfuran; S193, trans-dimethylaminocinnamonitrile; S204,2,2,4,4-tetramethyloctane; S205, 2,3-Dimethyl maleic anhydride