A circadian clock regulates transcription of the wheat <i>Cab-1</i> gene

Nagy, Ferenc; Kay, Steve A.; Chua, Nam‐Hai

doi:10.1101/gad.2.4.376

Cited by 202 publications

(218 citation statements)

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“…First, Kloppstech (1985) described a circadian rhythm in pea in the abundance of three nuclearencoded transcripts encoding the light-harvesting chlorophyll a/b binding protein (LHCB; also called CAB), the small subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase, and an early light-induced protein. This observation was replicated and extended in wheat, where it was shown that the transcription rate for the Cab-1 gene was under circadian control (Nagy et al, 1988). Neither pea nor wheat was particularly suitable for positional gene cloning, but Arabidopsis thaliana was emerging as a powerful system in which to combine forward genetic analysis with molecular gene cloning techniques (Somerville and Koornneef, 2002).…”

Section: The History Of Clock Research In Plantsmentioning

confidence: 80%

Plant Circadian Rhythms

2006

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Section: The History Of Clock Research In Plantsmentioning

confidence: 80%

Plant Circadian Rhythms

2006

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“…The induction of circadian oscillations of bean LHCB mRNA by a pulse of red light is greatly attenuated by a subsequent pulse of far-red light (Tavladoraki et al, 1989), and a pulse of far-red light prevents the accumulation of wheat LHCB mRNA in the next circadian cycle (Nagy et al, 1988). It is possible that SHM1 mRNA abundance is responding directly to temporal signals from the circadian clock.…”

Section: Discussionmentioning

confidence: 99%

Integrated Temporal Regulation of the Photorespiratory Pathway. Circadian Regulation of Two Arabidopsis Genes Encoding Serine Hydroxymethyltransferase

et al. 2000

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The photorespiratory pathway is comprised of enzymes localized within three distinct cellular compartments: chloroplasts, peroxisomes, and mitochondria. Photorespiratory enzymes are encoded by nuclear genes, translated in the cytosol, and targeted into these distinct subcellular compartments. One likely means by which to regulate the expression of the genes encoding photorespiratory enzymes is coordinated temporal control. We have previously shown in Arabidopsis that a circadian clock regulates the expression of the nuclear genes encoding both chloroplastic (Rubisco small subunit and Rubisco activase) and peroxisomal (catalase) components of the photorespiratory pathway. To determine whether a circadian clock also regulates the expression of genes encoding mitochondrial components of the photorespiratory pathway, we characterized a family of Arabidopsis serine hydroxymethyltransferase (SHM) genes. We examined mRNA accumulation for two of these family members, including one probable photorespiratory gene (SHM1) and a second gene expressed maximally in roots (SHM4), and show that both exhibit circadian oscillations in mRNA abundance that are in phase with those described for other photorespiratory genes. In addition, we show that SHM1 mRNA accumulates in light-grown seedlings, although this response is probably an indirect consequence of the induction of photosynthesis and photorespiration by illumination.

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“…Recently, it has been recognized that circadian rhythms regulate expression of a number of light-regulated plant genes, notably nuclear-encoded photosynthetic genes, and in certain cases, this regulation occurs at the leve1 of gene transcription (Kloppstech, 1985;Piechulla and Gruissem, 1987;Guilano et al, 1988;Nagy et al, 1988;Piechulla, 1988;Meyer et al, 1989;Taylor, 1989;Millar and Kay, 1991). Phase shifting by red light or temperature of the circadian rhythm of cycling mRNA levels has also been reported, strongly suggesting control of gene expression by the biological clock (Tavladoraki et al, 1989;Piechulla and Riesselmann, 1990).…”

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confidence: 99%