DOI: 10.1104/pp.116.1.17. Phytochrome B and the Regulation of Circadian Ethylene Production in Sorghum1

Phytochrome B and the Regulation of Circadian Ethylene Production in Sorghum1

10.1104/pp.116.1.17

Crossref journal-article

Oxford University Press (OUP)

Plant Physiology (286)

Abstract

Abstract The sorghum (Sorghum bicolor L. Moench) cultivar 58M, which contains the null mutant phytochrome B gene, shows reduced photoperiodic sensitivity and exhibits a shade-avoidance phenotype. Ethylene production by seedlings of wild-type and phytochrome B mutant cultivars was monitored every 3 h, and both cultivars were found to produce ethylene in a circadian rhythm, with peak production occurring during the day. The phytochrome B mutant produces rhythmic peaks of ethylene with approximately 10 times the amplitude of the wild-type counterpart with the same period and diurnal timing. The source of the mutant's additional ethylene is the shoot. The diurnal rhythm can be produced with either light or temperature cycles; however, both light and temperature cycles are required for circadian entrainment. The temperature signal overrides the light signal in the production of diurnal rhythms, because seedlings grown under thermoperiods reversed with the photoperiod produced ethylene peaks during the warm nights. To examine the effect of extreme shading on ethylene production, seedlings were grown under dim, far-red-enriched light. This treatment duplicated the phytochrome B mutant's shade-avoidance phenotype in the wild type and caused the wild type to produce ethylene peaks similar to those observed in the mutant. The results confirm that phytochrome B is not required for proper function of circadian timing, but it may be involved in modulating physiological rhythms driven by the biological clock oscillator.

Bibliography

Finlayson, S. A., Lee, I.-J., & Morgan, P. W. (1998). Phytochrome B and the Regulation of Circadian Ethylene Production in Sorghum1. Plant Physiology, 116(1), 17â25.

Authors 3

Scott A. Finlayson (first)
In-Jung Lee (additional)
Page W. Morgan (additional)

References 33 Referenced 83

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{'key': '2021050309230986700_R2', 'article-title': 'The Physiological Clock, Ed 2.', 'author': 'Bünning', 'year': '1967'} / The Physiological Clock, Ed 2. by Bünning (1967)
10.1104/pp.99.2.765 / Plant Physiol / Genetic regulation of development in Sorghum bicolor. VII. ma3R flowering mutant lacks a phytochrome that predominates in green tissue. by Childs (1992)
10.1104/pp.108.1.345 / Plant Physiol / Genetic regulation of development in Sorghum bicolor. X. Greatly attenuated photoperiod sensitivity in a phytochrome-deficient sorghum possessing a biological clock but lacking a red light-high irradiance response. by Childs (1995)
10.1104/pp.113.2.611 / Plant Physiol / The sorghum photoperiod sensitivity gene, Ma3, encodes a phytochrome B. by Childs (1997)
10.1104/pp.97.2.714 / Plant Physiol / Genetic regulation of development in Sorghum bicolor. VI. The ma3R allele results in abnormal phytochrome physiology. by Childs (1991)
10.1007/BF00043870 / Plant Mol Biol / The phytochrome apoprotein family in Arabidopsis is encoded by five genes: the sequences and expression of PHYD and PHYE. by Clack (1994)
10.1111/j.1365-3040.1994.tb00161.x / Plant Cell Environ / Phenotypic plasticity of stem elongation in two ecotypes of Stellaria longipes: the role of ethylene and response to wind. by Emery (1994)
10.1104/pp.108.1.337 / Plant Physiol / Genetic regulation of development in Sorghum bicolor. IX. The ma3R allele disrupts diurnal control of gibberellin biosynthesis. by Foster (1995)
10.1104/pp.42.8.1077 / Plant Physiol / An effect of light on the production of ethylene and the growth of the plumular portion of etiolated pea seedlings. by Goeschl (1967)
10.1104/pp.106.3.905 / Plant Physiol / Circadian oscillations of a transcript encoding a germin-like protein that is associated with cell walls in young leaves of the long-day plant Sinapis alba L. by Heintzen (1994)
10.1046/j.1365-313X.1994.5060799.x / Plant J / A light- and temperature-entrained circadian clock controls expression of transcripts encoding nuclear proteins with homology to RNA-binding proteins in meristematic tissue. by Heintzen (1994)
10.1104/pp.100.3.1389 / Plant Physiol / Endogenous rhythmicity of ethylene production in growing intact cereal seedlings. by Ievinsh (1992)
10.1104/pp.48.3.241 / Plant Physiol / Phytochrome action in Oryza sativa L. IV. Red and far-red reversible effect on the production of ethylene in excised coleoptiles. by Imaseki (1971)
10.1007/BF00195723 / Planta / Light and temperature entrained circadian regulation of activity and mRNA accumulation of 1-aminocyclopropane-1-carboxylic acid oxidase in Stellaria longipes. by Kathiresan (1996)
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10.1104/pp.51.5.949 / Plant Physiol / Ethylene, a regulator of young fruit abscission. by Lipe (1973)
10.1146/annurev.pp.42.060191.002031 / Annu Rev Plant Physiol Plant Mol Biol / Circadian rhythms and phytochrome. by Lumsden (1991)
10.1104/pp.113.3.981 / Plant Physiol / Diurnal fluctuations in ethylene formation in Chenopodium rubrum. by Machácková (1997)
10.1104/pp.72.2.441 / Plant Physiol / The role of ethylene in the growth response of submerged deep water rice. by Métraux (1983)
10.1007/BF00024254 / Plant Growth Regul / The effect of monochromatic red light on ethylene production in leaves of Impatiens balsamina L. and other species. by Michalczuk (1993)
10.1126/science.7855596 / Science / The regulation of circadian period by phototransduction pathways in Arabidopsis. by Millar (1995)
10.1104/pp.94.4.1616 / Plant Physiol / Does water deficit stress promote ethylene synthesis by intact plants? by Morgan (1990)
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{'key': '2021050309230986700_R26'}
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10.1626/jcs.64.139 / Jpn J Crop Sci / Opposite effects of ethylene on the growth of sorghum mesocotyl under red light and in darkness. by Suge (1995)
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10.1111/j.1365-3040.1989.tb01959.x / Plant Cell Environ / Growth responses of Rumex species in relation to submergence and ethylene. by Voesenek (1989)

Dates

Type	When
Created	23 years, 1 month ago (July 27, 2002, 1 a.m.)
Deposited	4 years, 3 months ago (May 3, 2021, 5:23 a.m.)
Indexed	3 weeks, 4 days ago (Aug. 7, 2025, 4:52 a.m.)
Issued	27 years, 8 months ago (Jan. 1, 1998)
Published	27 years, 8 months ago (Jan. 1, 1998)
Published Online	27 years, 8 months ago (Jan. 1, 1998)
Published Print	27 years, 8 months ago (Jan. 1, 1998)

Funders 0

None

BibTeX

@article{Finlayson_1998, title={Phytochrome B and the Regulation of Circadian Ethylene Production in Sorghum1}, volume={116}, ISSN={0032-0889}, url={http://dx.doi.org/10.1104/pp.116.1.17}, DOI={10.1104/pp.116.1.17}, number={1}, journal={Plant Physiology}, publisher={Oxford University Press (OUP)}, author={Finlayson, Scott A. and Lee, In-Jung and Morgan, Page W.}, year={1998}, month=jan, pages={17–25} }

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