Blue-Light Regulation of the Arabidopsis thaliana Cab1 Gene

Gao, Jie; Kaufman, Lon S.

doi:10.1104/pp.104.4.1251

Cited by 47 publications

(44 citation statements)

References 12 publications

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“…What is the receptor for blue-light induction of C A B expression? These studies have concluded that blue-light induction of C A B expression is regulated by the blue/UV-A photoreceptor system (Marrs and Kaufman, 1989;Oelmiiller et al, 1989;Wehmeyer et al, 1990;Gao and Kaufman, 1994) or that there is a co-action between the blue/UV-A receptor and phytochrome (Oelmüller et al, 1989). In this report we demonstrated that PhyA, PhyB, and PhyX also contribute to the blue-light regulation of C A B expression in etiolated seedlings of Arabidopsis.…”

Section: Blue-light Effects On Lnduction Of Cab Expressionsupporting

confidence: 49%

“…Moreover, PhyA is responsible for the VLF induction of CAB expression, and PhyA is not a classical phytochrome in terms of red/far-red photoreversibility. Although it had been shown that CAB expression is induced by VLF red light and by far-red light Karlin-Neumann et al, 1988;Wehmeyer et al, 1990;Gao and Kaufman, 1994), our data now allow us to assign these responses to PhyA. The induction by red light (650 and 667 nm) in either the phyA mutant or the phyA /phyB double mutant showed a similar threshold fluence of 10 (xmol m~2, implying that PhyB-and PhyX-specific induction have a similar threshold fluence, 10 ^mol m~2.…”

Section: The Role Of Different Phytochromesmentioning

confidence: 56%

“…Previous studies have shown that the expression of CAB is induced by blue light in pea (Sasaki et al, 1988;Marrs and Kaufman, 1989), tomato (Oelmiiller et al, 1989;Wehmeyer et al, 1990), tobacco (Wehmeyer et al, 1990), and Arabidopsis (Gao and Kaufman, 1994). What is the receptor for blue-light induction of C A B expression?…”

Section: Blue-light Effects On Lnduction Of Cab Expressionmentioning

confidence: 98%

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Fluence and Wavelength Requirements for Arabidopsis CAB Gene Induction by Different Phytochromes

et al. 1997

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Plants sense many aspects of light in their environment, including its wavelength, duration, intensity, and direction. Photoregulations in plants have been classified into two categories known as the induction reaction and the HIR in terms of fluence and timing of irradiations, and the former is further divided into the VLF response and the LF response Furuya and Schafer, 1996). VLF responses can be initiated by fluences as low as 0.1 nmol m-', whereas LF responses require fluences greater than 1 pmol m-'. HIRs are elicited by prolonged or continuous irradiation that require exposure for hours, and fluences in excess of 10 mmol m-'. Plants monitor their light environment using a number of photoreceptors, the best characterized of which are phytochromes.

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Section: Blue-light Effects On Lnduction Of Cab Expressionsupporting

confidence: 49%

Section: The Role Of Different Phytochromesmentioning

confidence: 56%

Section: Blue-light Effects On Lnduction Of Cab Expressionmentioning

confidence: 98%

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Fluence and Wavelength Requirements for Arabidopsis CAB Gene Induction by Different Phytochromes

et al. 1997

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“…Chloroplasts also appear to affect light signalling mediated by cry2 and phytochrome A [51]. cry1 appeared to have no effect, upregulate or downregulate the expression of Lhcb [52][53][54][55] depending on experimental conditions and was required to drive a 1 O 2 -independent reaction that induces programmed cell death after 1 O 2 accumulated in chloroplasts [56]. Thus, the nature of cry1 signalling is influenced by cellular context.…”

Section: Integration Of Light and Plastid-to-nucleus Signallingmentioning

confidence: 99%

Influence of plastids on light signalling and development

Larkin

2014

Phil. Trans. R. Soc. B

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In addition to their contribution to metabolism, chloroplasts emit signals that influence the expression of nuclear genes that contribute to numerous plastidic and extraplastidic processes. Plastid-to-nucleus signalling optimizes chloroplast function, regulates growth and development, and affects responses to environmental cues. An incomplete list of plastid signals is available and particular plastid-to-nucleus signalling mechanisms are partially understood. The plastid-to-nucleus signalling that depends on the GENOMES UNCOUPLED ( GUN ) genes couples the expression of nuclear genes to the functional state of the chloroplast. Analyses of gun mutants provided insight into the mechanisms and biological functions of plastid-to-nucleus signalling. GUN genes contribute to chloroplast biogenesis, the circadian rhythm, stress tolerance, light signalling and development. Some have criticized the gun mutant screen for employing inhibitors of chloroplast biogenesis and suggested that gun alleles do not disrupt significant plastid-to-nucleus signalling mechanisms. Here, I briefly review GUN -dependent plastid-to-nucleus signalling, explain the flaws in the major criticisms of the gun mutant screen and review the influence of plastids on light signalling and development.

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“…A single pulse of low-fluence BL also induces the immediate expression of Lhcb in etiolated pea (Pisum sativum) and Arabidopsis (Marrs and Kaufman, 1991;Gao and Kaufman, 1994). The signal transduction mechanism responsible for this gene expression is comprised in part by a GCR1, GPA1, PRN1, and NF-Y-signaling chain, wherein PRN1 acts as the GPA1 effector (K.M.…”

Section: The Bl-induced Accumulation Of Phe Is Not Part Of the Post-gmentioning

confidence: 99%

G-Protein-Coupled Receptor 1, G-Protein Gα-Subunit 1, and Prephenate Dehydratase 1 Are Required for Blue Light-Induced Production of Phenylalanine in Etiolated Arabidopsis

et al. 2006

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Different classes of plant hormones and different wavelengths of light act through specific signal transduction mechanisms to coordinate higher plant development. A specific prephenate dehydratase protein (PD1) was discovered to have a strong interaction with the sole canonical G-protein Gα-subunit (GPA1) in Arabidopsis (Arabidopsis thaliana). PD1 is a protein located in the cytosol, present in etiolated seedlings, with a specific role in blue light-mediated synthesis of phenylpyruvate and subsequently of phenylalanine (Phe). Insertion mutagenesis confirms that GPA1 and the sole canonical G-protein-coupled receptor (GCR1) in Arabidopsis also have a role in this blue light-mediated event. In vitro analyses indicate that the increase in PD1 activity is the direct and specific consequence of its interaction with activated GPA1. Because of their shared role in the light-mediated synthesis of phenylpyruvate and Phe, because they are iteratively interactive, and because activated GPA1 is directly responsible for the activation of PD1; GCR1, GPA1, and PD1 form all of or part of a signal transduction mechanism responsible for the light-mediated synthesis of phenylpyruvate, Phe, and those metabolites that derive from that Phe. Data are also presented to confirm that abscisic acid can act through the same pathway. An additional outcome of the work is the confirmation that phenylpyruvate acts as the intermediate in the synthesis of Phe in etiolated plants, as it commonly does in bacteria and fungi.

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Blue-Light Regulation of the Arabidopsis thaliana Cab1 Gene

Cited by 47 publications

References 12 publications

Fluence and Wavelength Requirements for Arabidopsis CAB Gene Induction by Different Phytochromes

Fluence and Wavelength Requirements for Arabidopsis CAB Gene Induction by Different Phytochromes

Influence of plastids on light signalling and development

G-Protein-Coupled Receptor 1, G-Protein Gα-Subunit 1, and Prephenate Dehydratase 1 Are Required for Blue Light-Induced Production of Phenylalanine in Etiolated Arabidopsis

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