Comparative transcriptome analysis of leaves and roots in response to sudden increase in salinity in Brassica napus by RNA-seq

Hui Yee Yong, Zhongwei Zou, Eng Piew Kok, Bih Hua Kwan, Kingsley Chow, Shiori Nasu, Masami Nanzyo, Hiroyasu Kitashiba, Takeshi Nishio

研究成果: Article査読

38 被引用数 (Scopus)

抄録

Amphidiploid species in the Brassicaceae family, such as Brassica napus, are more tolerant to environmental stress than their diploid ancestors.A relatively salt tolerant B. napus line, N119, identified in our previous study, was used. N119 maintained lower Na+ content, and Na+/K+ and Na+/Ca2+ ratios in the leaves than a susceptible line. The transcriptome profiles of both the leaves and the roots 1 h and 12 h after stress were investigated. De novo assembly of individual transcriptome followed by sequence clustering yielded 161,537 nonredundant sequences. A total of 14,719 transcripts were differentially expressed in either organs at either time points. GO and KO enrichment analyses indicated that the same 49 GO terms and seven KO terms were, respectively, overrepresented in upregulated transcripts in both organs at 1 h after stress. Certain overrepresented GO term of genes upregulated at 1 h after stress in the leaves became overrepresented in genes downregulated at 12 h. A total of 582 transcription factors and 438 transporter genes were differentially regulated in both organs in response to salt shock. The transcriptome depicting gene network in the leaves and the roots regulated by salt shock provides valuable information on salt resistance genes for future application to crop improvement.

本文言語English
論文番号467395
ジャーナルBioMed Research International
2014
DOI
出版ステータスPublished - 2014

ASJC Scopus subject areas

  • 生化学、遺伝学、分子生物学(全般)
  • 免疫学および微生物学(全般)

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