4.6 Article

Genome-Wide Transcriptome Profiling Revealed Cotton Fuzz Fiber Development Having a Similar Molecular Model as Arabidopsis Trichome

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PLOS ONE
卷 9, 期 5, 页码 -

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PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0097313

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资金

  1. State Basic Research Development Program of China (973 Program) [2011CB109300]
  2. National High Technology Research and Development Program of China (863 Program) [2011AA10A102]
  3. Priority Academic Program Development of Jiangsu Higher Education Institutions

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The cotton fiber, as a single-celled trichome, is a biological model system for studying cell differentiation and elongation. However, the complexity of gene expression and regulation in the fiber complicates genetic research. In this study, we investigated the genome-wide transcriptome profiling in Texas Marker-1 (TM-1) and five naked seed or fuzzless mutants (three dominant and two recessive) during the fuzz initial development stage. More than three million clean tags were generated from each sample representing the expression data for 27,325 genes, which account for 72.8% of the annotated Gossypium raimondii primary transcript genes. Thousands of differentially expressed genes (DEGs) were identified between TM-1 and the mutants. Based on functional enrichment analysis, the DEGs downregulated in the mutants were enriched in protein synthesis-related genes and transcription factors, while DEGs upregulated in the mutants were enriched in DNA/chromatin structure-related genes and transcription factors. Pathway analysis showed that ATP synthesis, and sugar and lipid metabolism-related pathways play important roles in fuzz initial development. Also, we identified a large number of transcription factors such as MYB, bHLH, HB, WRKY, AP2/EREBP, bZIP and C2H2 zinc finger families that were differently expressed between TM-1 and the mutants, and were also related to trichome development in Arabidopsis.

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