title: Analysis of sea-island cotton and upland cotton in response to Verticillium dahliae infection by RNA sequencing.
abstract: BACKGROUND
  Cotton Verticillium wilt is a serious soil-borne vascular disease that causes great economic loss each year. However, due to the lack of resistant varieties of upland cotton, the molecular mechanisms of resistance to this disease, especially to the pathogen Verticillium dahliae, remain unclear.
  
  
  RESULTS
  We used the RNA-seq method to research the molecular mechanisms of cotton defence responses to different races of Verticillium dahliae by comparing infected sea-island cotton and upland cotton. A total of 77,212 unigenes were obtained, and the unigenes were subjected to BLAST searching and annotated using the GO and KO databases. Six sets of digital gene expression data were mapped to the reference transcriptome. The gene expression profiles of cotton infected with Verticillium dahliae were compared to those of uninfected cotton; 44 differentially expressed genes were identified. Regarding genes involved in the phenylalanine metabolism pathway, the hydroxycinnamoyl transferase gene (HCT) was upregulated in upland cotton whereas PAL, 4CL, CAD, CCoAOMT, and COMT were upregulated in sea-island cotton. Almost no differentially expressed genes in this pathway were identified in sea-island cotton and upland cotton when they were infected with V. dahliae V991 and V. dahliae D07038, respectively.
  
  
  CONCLUSIONS
  Our comprehensive gene expression data at the transcription level will help elucidate the molecular mechanisms of the cotton defence response to V. dahliae. By identifying the genes involved in the defence response of each type of cotton to V. dahliae, our data not only provide novel molecular information for researchers, but also help accelerate research on genes involved in defences in cotton.
authors: Quan
authors: Q
authors: Sun
authors: Huaizhong
authors: H
authors: Jiang
authors: Xiaoyan
authors: X
authors: Zhu
authors: Weina
authors: W
authors: Wang
authors: Xiaohong
authors: X
authors: He
authors: Yuzhen
authors: Y
authors: Shi
authors: Youlu
authors: Y
authors: Yuan
authors: Xiongming
authors: X
authors: Du
authors: State Key Laboratory of Cotton Biology, Henan Key Laboratory of Plant Stress Biology, School of Life Sciences, Henan University, Kaifeng 475004, China. yingfancai@gmail.com.
authors: Yingfan
authors: Y
authors: Cai
mesh_terms: D019295:Computational Biology; D060467:Disease Resistance / Q000235:genetics; D018506:Gene Expression Regulation, Plant; D003368:Gossypium / Q000235:genetics* / Q000378:metabolism / Q000382:microbiology*; D059014:High-Throughput Nucleotide Sequencing; D058977:Molecular Sequence Annotation; D010935:Plant Diseases / Q000235:genetics* / Q000382:microbiology*; D010940:Plant Proteins / Q000235:genetics; D015203:Reproducibility of Results; D017423:Sequence Analysis, RNA; D015398:Signal Transduction; D059467:Transcriptome; D020172:Verticillium
chemical_list: D010940:Plant Proteins