Identification and Expression Analyses of SBP-Box Genes Reveal Their Involvement in Abiotic Stress and Hormone Response in Tea Plant ( Camellia sinensis)

Int J Mol Sci. 2018 Oct 30;19(11):3404. doi: 10.3390/ijms19113404.

Abstract

The SQUAMOSA promoter binding protein (SBP)-box gene family is a plant-specific transcription factor family. This family plays a crucial role in plant growth and development. In this study, 20 SBP-box genes were identified in the tea plant genome and classified into six groups. The genes in each group shared similar exon-intron structures and motif positions. Expression pattern analyses in five different tissues demonstrated that expression in the buds and leaves was higher than that in other tissues. The cis-elements and expression patterns of the CsSBP genes suggested that the CsSBP genes play active roles in abiotic stress responses; these responses may depend on the abscisic acid (ABA), gibberellic acid (GA), and methyl jasmonate (MeJA) signaling pathways. Our work provides a comprehensive understanding of the CsSBP family and will aid in genetically improving tea plants.

Keywords: Camellia sinensis; SBP-box; abiotic stress; expression profile; hormone.

MeSH terms

  • Abscisic Acid / genetics
  • Abscisic Acid / metabolism
  • Acetates / metabolism
  • Camellia sinensis / genetics
  • Camellia sinensis / metabolism*
  • Cyclopentanes / metabolism
  • Gene Expression Profiling
  • Gene Expression Regulation, Plant / physiology*
  • Gibberellins / genetics
  • Gibberellins / metabolism
  • Oxylipins / metabolism
  • Plant Proteins / biosynthesis*
  • Plant Proteins / genetics
  • Signal Transduction / physiology*
  • Transcription Factors / biosynthesis*
  • Transcription Factors / genetics

Substances

  • Acetates
  • Cyclopentanes
  • Gibberellins
  • Oxylipins
  • Plant Proteins
  • Transcription Factors
  • Abscisic Acid
  • methyl jasmonate
  • gibberellic acid