Metabolomic and transcriptomic insights into how cotton fiber transitions to secondary wall synthesis, represses lignification, and prolongs elongation

Table 1 Overrepresented KEGG pathways in cotton fiber implicated by metabolites or enzyme-encoding transcripts. Entries reflect the combined data from Gh and Gb fiber

Metabolome	Transcriptome
Alanine, aspartate and glutamate metabolism	Alanine, aspartate and glutamate metabolism
Aminoacyl-tRNA biosynthesis	Aminoacyl-tRNA biosynthesis
Ascorbate and aldarate metabolism	Carbon fixation in photosynthetic organisms
beta-Alanine metabolism	Citrate cycle (TCA cycle)
Butanoate metabolism	Cysteine and methionine metabolism
Citrate cycle (TCA cycle)	Flavonoid biosynthesis
Cyanoamino acid metabolism	Glycerolipid metabolism
Galactose metabolism	Glycolysis/Gluconeogenesis
Glutathione metabolism	One carbon pool by folate
Glycine, serine and threonine metabolism	Other glycan degradation
Glyoxylate and dicarboxylate metabolism	Oxidative phosphorylation
Oxidative phosphorylation	Phenylalanine, tyrosine, tryptophan biosynthesis
Pantothenate and CoA biosynthesis	Phosphatidylinositol signaling system
Taurine and hypotaurine metabolism	Purine metabolism
Valine, leucine and isoleucine biosynthesis	Starch and sucrose metabolism
	Valine, leucine and isoleucine biosynthesis

Italics indicate overrepresented pathways implicated by both metabolites and transcripts. Overrepresentation of pathways (p < 0.02, q < 0.09) was determined by Fisher’s exact test followed by Benjamini-Hochberg correction of the p-values (see Additional files 4 and 7)

ISSN: 1471-2164