Integrated metabolomics and genomics analysis provides new insights into the fiber elongation process in Ligon lintless-2 mutant cotton (Gossypium hirsutumL.)

Table 2 Fold change in peak area metabolites up-regulated in developing fiber of wild-type plants

	5DPAWT/Li₂	8DPAWT/Li₂	12DPAWT/Li₂	16DPAWT/Li₂
Organic acids
Oxalic acid	2.6	0.9	1.6	4.2
2,3-Dihydroxybutanedioic acid	1.2	2.0	2.8	2.7
Maleic acid	0.2	3.3	1.2	4.9
Ascorbic acid	4.2	7.7	11.0	21.2
2-Hydroxyglutaric acid	6.1	9.4	14.6	14.9
Isoascorbic acid	1.4	11.3	17.4	8.6
Amino acids
Phenylalanine	0.9	1.0	1.7	2.6
Tryptophan	1.1	1.5	2.5	3.1
Threonine	1.1	5.0	1.1	1.6
Alanine	2.0	2.1	3.2	4.0
Tyrosine	0.6	3.1	2.0	6.3
Asparagine	2.1	6.4	11.2	7.6
Glutamine	0.6	8.3	12.6	5.5
Arginine	0.5	3.0	5.5	1.7
Non-protein amino acid
Pyroglutamic acid	4.0	1.2	2.2	4.0
Sugars, sugar alchohols, sugar acids, sugar phosphates
Arabinose	1.9	2.4	3.3	3.5
Fructose	6.5	13.4	27.5	66.6
Glucose	19.4	29.2	45.0	73.5
Galactose	7.4	21.8	46.8	78.3
myo-Inositol	0.6	1.6	4.0	4.7
Trehalose	0.7	1.5	1.6	2.1
Maltose	0.9	2.1	2.5	4.2
Galactonic acid	1.6	6.5	3.1	5.3
Fructose-6-phosphate	2.7	2.7	4.3	3.7
Glucose-6-phosphate	1.9	27.8	38.1	43.5
Glycerol-3-phosphate
Glycerol-3-phosphate	1.6	1.8	2.8	1.9

Values represent fold change of WT to mutant in peak area of identified metabolites at 5, 8, 12, and 16 DPA. Bold font indicates significant changes (p < 0.05) in metabolite levels between near-isogenic lines (data represent 3 biological replicates).

ISSN: 1471-2164