Photoreceptor Pigment for Blue Light in Neurospora crassa
Open accessAbstract
Irradiating the mycelium of Neurospora crassa with moderate intensities of blue light causes a reversible photoreduction of a b-type cytochrome. The action spectrum for the photoreduction of cytochrome b is very similar to the absorption spectrum of flavin pigments. Prolonged irradiation of the mycelium with strong blue light irreversibly bleaches flavin-like pigments and as these pigments are bleached the photoresponse of cytochrome b is lost. We conclude from these and other data that a flavin is the photoreceptor pigment for the photoreduction of cytochrome b. The close similarity between the action spectrum for the photoreduction of cytochrome b and action spectra for a number of physiological photoresponses suggests that this photoreceptor pigment controls a wide variety of photobiological processes in a wide diversity of organisms.
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Light treatment of N. crassa changes the light absorbance properties of mycelia, and the action spectrum of this response lies within both the UV and blue wavelengths and closely overlaps that of flavins, with peaks at 360 and 470 nm.
“Light treatment of N. crassa changes the light absorbance properties of mycelia, and the action spectrum of this response is within both the UV and blue wavelengths and closely overlaps that of flavins, with respective peaks at 360 and 470 nm [33].”
From Light Controls Growth and Development via a Conserved Pathway in the Fungal Kingdom (2005) · cites this paper as [33]
The Results report light-induced absorbance changes in Neurospora mycelium and an action spectrum measured from 360 to 530 nm; the Abstract says that spectrum is very similar to flavin absorption. The copy does not establish the claimed peaks at 360 and 470 nm: the Results instead describe the photoreceptor pigment as absorbing maximally at about 460 nm. (LLM, conf=0.83)
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Cites
[1] Absorption spectroscopy of biological materials
Butler, W. L. (1972) · Methods in enzymology on CD-ROM/Methods in enzymology · doi:10.1016/0076-6879(72)24052-6 · Cited by 74 · see citing works
Self-citationCircadian Clock Action Spectrum in a Photoperiodic Moth
Bruce, V. G., & Minis, D. H. (1969) · Science · doi:10.1126/science.163.3867.583 · Cited by 44 · see citing works
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Research works printed but not linked: 2
- CURRY, G. 'M. AND K. V. THIMIANN. 1961. Phototropism; the nature of the photoreceptor in liglher ancI low-er plants. In: B. Chr. Christensen and B. Buchmann, eds., Procress in Photobiology. Elsevier Publishing Co., Amster- clam. pp. 127-134.
- KOWALLIK, W. 1967. Actioui spectrum for an enhancement of endogenous respiration by light in Chlo lclia. Plant Physiol. 42: 672-676. N1D BUTLER Plant Physiol. Vol. 55, 1975
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Light Controls Growth and Development via a Conserved Pathway in the Fungal Kingdom
Idnurm, A., & Heitman, J. (2005) · PLoS Biology · doi:10.1371/journal.pbio.0030095 · Cited by 310 · see citing works
Phototropism: Bending towards Enlightenment
Whippo, C. W., & Hangarter, R. P. (2006) · The Plant Cell · doi:10.1105/tpc.105.039669 · Cited by 154 · see citing works
De Fabo, E. C., Harding, R. W., & Shropshire, W. (1976) · Plant Physiology · doi:10.1104/pp.57.3.440 · Cited by 123 · see citing works
Action spectrum for fruiting in the basidiomycete <i>Schizophyllum commune</i>
Yli‐Mattila, T. (1985) · Physiologia Plantarum · doi:10.1111/j.1399-3054.1985.tb02397.x · Cited by 14 · see citing works
- Authors
- Muñoz, V., & Butler, W. L.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1975-02-01
- Volume
- 55
- Issue
- 2
- Pages
- 421-426
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- PMC
- PMC541627
- OpenAlex
- W2062226923
- Cited by
- 164
- References
- 2
- Citations by year
- 2017: 2
- FWCI
- 26.91
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- PLANT PHYSIOLOGY (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Photoreceptor and optogenetics research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
- Keywords
- photoreceptor pigments, blue light, Neurospora crassa, cytochrome b, photoreduction, action spectrum, mycelium, photobiological processes
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