The expression of light-regulated genes in the high-pigment-1 mutant of tomato

Janny L. Peters, M. Széll, Richard E. Kendrick

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Three light-regulated genes, chlorophyll a/b-binding protein (CAB), ribulose-1,5-bisphosphate carboxylase/oxygenase small subunit, and chalcone synthase (CHS), are demonstrated to be upregulated in the high-pigment-1 (hp-1) mutant of tomato (Lycopersicon esculentum Mill.) compared with wild type (WT). However, the pattern of up-regulation of the three genes depends on the light conditions, stage of development, and tissue studied. Compared with WT, the hp-1 mutant showed higher CAB gene expression in the dark after a single red-light pulse and in the pericarp of immature fruits. However, in vegetative tissues of light-grown seedlings and adult plants, CAB mRNA accumulation did not differ between WT and the hp-1 mutant. The ribulose-1,5-bisphosphate carboxylase/oxygenase small subunit mRNA accumulated to a higher level in the hp-1 mutant than WT under all light conditions and tissues studied, whereas CHS gene expression was up-regulated in deetiolated vegetative hp-1-mutant tissues only. The CAB and CHS genes were shown to be phytochrome regulated and both phytochrome A and B1 play a role in CAB gene expression. These observations support the hypothesis that the HP-1 protein plays a general repressive role in phytochrome signal transduction.

Original languageEnglish
Pages (from-to)797-807
Number of pages11
JournalPlant Physiology
Volume117
Issue number3
Publication statusPublished - 1998

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Chlorophyll Binding Proteins
Lycopersicon esculentum
pigments
naringenin-chalcone synthase
tomatoes
chlorophyll
Light
phytochrome
mutants
Phytochrome
Ribulose-Bisphosphate Carboxylase
Oxygenases
Genes
ribulose 1,5-diphosphate
oxygenases
Gene Expression
genes
gene expression
Phytochrome A
Messenger RNA

ASJC Scopus subject areas

  • Plant Science

Cite this

The expression of light-regulated genes in the high-pigment-1 mutant of tomato. / Peters, Janny L.; Széll, M.; Kendrick, Richard E.

In: Plant Physiology, Vol. 117, No. 3, 1998, p. 797-807.

Research output: Contribution to journalArticle

Peters, Janny L. ; Széll, M. ; Kendrick, Richard E. / The expression of light-regulated genes in the high-pigment-1 mutant of tomato. In: Plant Physiology. 1998 ; Vol. 117, No. 3. pp. 797-807.
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