The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
EVIDENCE FOR AN ULTRAVIOLET SUNSCREEN ROLE OF THE EXTRACELLULAR PIGMENT SCYTONEMIN IN THE TERRESTRIAL CYANOBACTERIUM Chiorogloeopsis sp.
Abstract
Abstract— The proposed photoprotective role of the UV‐A absorbing, extracellular pigment scytonemin was studied in the terrestrial cyanobacterium Chlorogloeopsis sp. strain O‐89‐Cgs(1). UV‐A (315–400 nm) caused growth delay, cell growth restarting only when scytonemin had accumulated in the extracellular envelopes. Cultures with scytonemin were more resistant to photoinhibition of photosynthesis than cultures without scytonemin, the differential resistance being much greater to UV‐A‐caused photoinhibition than to photoinhibition caused by visible light. The presence of scytonemin in the extracellular envelopes was correlated with the inability of UV‐A radiation to induce strong photopigment fluorescence (685 nm emission), regardless of the specific content os photosynthetic pigments. The physical removal of the scytonemin containing extracellular envelopes brought about the loss of UV‐A resistance as measured by photobleaching rates of chlorophyll a under conditions of physiological inactivity (desiccation). These observations provide strong evidence for the proposed protective role of scytonemin, as a passive UV‐A sunscreen, in cyanobacteria.
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Cites
Kollias, N., Sayre, R. M., Zeise, L., & Chedekel, M. R. (1991) · Journal of Photochemistry and Photobiology B: Biology · doi:10.1016/1011-1344(91)80147-a · Cited by 482
Cited by
The structure of scytonemin, an ultraviolet sunscreen pigment from the sheaths of cyanobacteria
Proteau, P. J., Gerwick, W. H., Garcia-Pichel, F., & Castenholz, R. (1993) · Experientia · doi:10.1007/bf01923559 · Cited by 392
Self-citationGarcia-Pichel, F., Wingard, C. E., & Castenholz, R. W. (1993) · Applied and Environmental Microbiology · doi:10.1128/aem.59.1.170-176.1993 · Cited by 314
Self-citationPhotoprotective compounds from marine organisms
Rastogi, R. P., Richa, Sinha, R. P., Singh, S. P., & Häder, D.-P. (2010) · Journal of Industrial Microbiology & Biotechnology · doi:10.1007/s10295-010-0718-5 · Cited by 232
The cyanobacterial UV-absorbing pigment scytonemin displays radical-scavenging activity
Matsui, K., Nazifi, E., Hirai, Y., Wada, N., Matsugo, S., & Sakamoto, T. (2012) · The Journal of General and Applied Microbiology · doi:10.2323/jgam.58.137 · Cited by 133
Portwich, A., & Garcia-Pichel, F. (1999) · Archives of Microbiology · doi:10.1007/s002030050759 · Cited by 118
Metadata
- Authors
- Garcia‐Pichel, F., Sherry, N. D., & Castenholz, R. W.
- Venue
- Photochemistry and Photobiology
- Publisher
- Wiley
- Published
- 1992-07
- Volume
- 56
- Issue
- 1
- Pages
- 17-23
- ISSN
- 0031-8655 (ISSN-L)
- 1751-1097
- OpenAlex
- W1974762034
- Cited by
- 339
- References
- 1
- FWCI
- 2.54
- Type
- journal article
- Language
- en
- Open access
- closed
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- Garcia‐Pichel, F., Sherry, N. D., & Castenholz, R. W. (1992). EVIDENCE FOR AN ULTRAVIOLET SUNSCREEN ROLE OF THE EXTRACELLULAR PIGMENT SCYTONEMIN IN THE TERRESTRIAL CYANOBACTERIUM Chiorogloeopsis sp. Photochemistry and Photobiology. https://doi.org/10.1111/j.1751-1097.1992.tb09596.x
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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