The wheat Rc gene for red coleoptile colour codes for a transcriptional activator of late anthocyanin biosynthesis genes

Nisar Ahmed, Masahiko Maekawa, Shigeko Utsugi, Kazuhide Rikiishia, Aftab Ahmad, Kazuhiko Noda

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Genes that regulate anthocyanin pigmentation in wheat coleoptiles were investigated in three lines of wheat. When grown in the light, the wheat line Hope developed red coleoptiles, while another line, Chinese Spring (CS), expressed green coleoptiles. Another line CS(Hope7A), a chromosome substitution line that carries chromosome 7A of Hope in a CS background, also developed a red coleoptile. In the dark, none of the three lines developed colored coleoptiles. Anthocyanin biosynthesis pathway genes have been grouped into two subsets: early biosynthesis genes (EBGs), which include CHS, CHI and F3H, and late biosynthesis genes (LBGs), which include DFR, ANS and UFGT. None of these six genes was upregulated in coleoptiles grown in the dark, whereas all were activated by light in coleoptiles of Hope and CS(Hope7A). In coleoptiles of CS grown in the light, the EBGs were expressed, but the three LBGs were not. The Rc gene located on chromosome 7 appears to encode a transcription activator of LBGs involved in light-regulation of anthocyanin synthesis.

Original languageEnglish
Pages (from-to)54-58
Number of pages5
JournalJournal of Cereal Science
Volume44
Issue number1
DOIs
Publication statusPublished - Jul 2006

Fingerprint

Color codes
Anthocyanins
Cotyledon
Biosynthesis
coleoptiles
Triticum
anthocyanins
Color
Genes
biosynthesis
wheat
color
genes
Chromosomes
Light
chromosomes
transactivators
substitution lines
Chromosomes, Human, Pair 7
Pigmentation

Keywords

  • Anthocyanin
  • Rc gene
  • Transcription factor
  • Wheat coleoptile

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Food Science

Cite this

The wheat Rc gene for red coleoptile colour codes for a transcriptional activator of late anthocyanin biosynthesis genes. / Ahmed, Nisar; Maekawa, Masahiko; Utsugi, Shigeko; Rikiishia, Kazuhide; Ahmad, Aftab; Noda, Kazuhiko.

In: Journal of Cereal Science, Vol. 44, No. 1, 07.2006, p. 54-58.

Research output: Contribution to journalArticle

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