TABLE 4.

The top 20 KEGG pathways with the largest number of differentially expressed genes in each comparison group.

XMCK-XMT1			XMCK-XMT2			YNCK-YNT1			YNCK-YNT2
Pathway	ko_ID	DEGs	Pathway	ko_ID	DEGs	Pathway	ko_ID	DEGs	Pathway	ko_ID	DEGs
Plant-pathogen interaction	ko04626	19	Biosynthesis of cofactors	ko01240	18	Photosynthesis – antenna proteins	ko00196	11	Plant-pathogen interaction	ko04626	35
Circadian rhythm – plant	ko04712	18	Plant hormone signal transduction	ko04075	15	Circadian rhythm – plant	ko04712	10	Fatty acid elongation	ko00062	25
Arginine and proline metabolism	ko00330	16	Phenylpropanoid biosynthesis	ko00940	15	Biosynthesis of cofactors	ko01240	8	Phenylpropanoid biosynthesis	ko00940	23
Plant hormone signal transduction	ko04075	14	Amino sugar and nucleotide sugar metabolism	ko00520	14	Thiamine metabolism	ko00730	6	Glutathione metabolism	ko00480	22
Fatty acid elongation	ko00062	11	Plant-pathogen interaction	ko04626	14	Spliceosome	ko03040	4	Starch and sucrose metabolism	ko00500	21
Carbon metabolism	ko01200	11	Starch and sucrose metabolism	ko00500	14	Plant hormone signal transduction	ko04075	3	Circadian rhythm – plant	ko04712	21
Photosynthesis – antenna proteins	ko00196	10	Arginine and proline metabolism	ko00330	12	Arginine and proline metabolism	ko00330	3	Plant hormone signal transduction	ko04075	19
Glycerophospholipid metabolism	ko00564	9	Ribosome	ko03010	12	Cysteine and methionine metabolism	ko00270	3	Biosynthesis of cofactors	ko01240	18
Protein processing in endoplasmic reticulum	ko04141	9	MAPK signaling pathway – plant	ko04016	12	Alanine, aspartate and glutamate metabolism	ko00250	2	Cutin, suberin and wax biosynthesis	ko00073	17
Spliceosome	ko03040	8	Beta-Alanine metabolism	ko00410	11	Pyrimidine metabolism	ko00240	2	Amino sugar and nucleotide sugar metabolism	ko00520	15
Beta-Alanine metabolism	ko00410	8	Circadian rhythm – plant	ko04712	11	RNA degradation	ko03018	2	Photosynthesis – antenna proteins	ko00196	14
Phenylpropanoid biosynthesis	ko00940	8	Carbon metabolism	ko01200	10	Cyanoamino acid metabolism	ko00460	2	Photosynthesis	ko00195	14
Carbon fixation in photosynthetic organisms	ko00710	8	Oxidative phosphorylation	ko00190	10	Protein processing in endoplasmic reticulum	ko04141	1	Ascorbate and aldarate metabolism	ko00053	13
Biosynthesis of cofactors	ko01240	8	Thiamine metabolism	ko00730	9	DNA replication	ko03030	1	Oxidative phosphorylation	ko00190	12
Fructose and mannose metabolism	ko00051	6	Peroxisome	ko04146	9	Starch and sucrose metabolism	ko00500	1	Carbon metabolism	ko01200	12
Glutathione metabolism	ko00480	6	Ascorbate and aldarate metabolism	ko00053	9	Porphyrin and chlorophyll metabolism	ko00860	1	Arginine and proline metabolism	ko00330	12
Pentose phosphate pathway	ko00030	6	Ubiquinone and other terpenoid-quinone biosynthesis	ko00130	9	Peroxisome	ko04146	1	Glycerolipid metabolism	ko00561	11
Pantothenate and CoA biosynthesis	ko00770	6	Photosynthesis	ko00195	8	Endocytosis	ko04144	1	Beta-Alanine metabolism	ko00410	10
Biosynthesis of amino acids	ko01230	6	Fatty acid elongation	ko00062	7	Glycerolipid metabolism	ko00561	1	Fatty acid metabolism	ko01212	9
Glycolysis/Gluconeogenesis	ko00010	6	Spliceosome	ko03040	7	MAPK signaling pathway – plant	ko04016	1	Ubiquinone and other terpenoid-quinone biosynthesis	ko00130	9

Pathways, KEGG pathway name; ko_ID, KEGG Orthology ID; DEGs, number of differentially expressed genes. XMCK, Xinmai26 was treated at 16°C; XMT1, Xinmai26 was treated at 4°C for 4 h; XMT2, Xinmai26 was treated at −4°C for 4 h; YNCK, Yannong19 was treated at 16°C; YNT1, Yannong19 was treated at 4°C for 4 h; YNT2, Yannong19 was treated at −4°C for 4 h.