Quantitative proteomics and transcriptomics reveal key metabolic processes associated with cotton fiber initiation.

Unlabelled: An iTRAQ-based proteomics of ovules from the upland cotton species Gossypium hirsutum and its fuzzless-lintless mutant was performed, and finally 2729 proteins that preferentially accumulated at anthesis in wild-type ovules were identified. We confirmed that the gene expression levels of 2005 among these proteins also increased by performing an RNA sequencing transcriptomics. Expression of proteins involved in carboxylic acid metabolism, small-molecule metabolic processes, hormone regulation, and lipid metabolism was significantly enhanced in wild-type ovules.