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dc.contributor.author
Jiang, Hongxia
dc.contributor.author
Gao, Kunshan
dc.contributor.author
Helbling, Eduardo Walter
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dc.date.available
2020-01-15T15:35:44Z
dc.date.issued
2009-12
dc.identifier.citation
Jiang, Hongxia; Gao, Kunshan; Helbling, Eduardo Walter; The conchocelis of porphyra haitanensis (rhodophyta) is protected from harmful UV radiation by the covering calcareous matrix; Wiley Blackwell Publishing, Inc; Journal Of Phycology; 45; 6; 12-2009; 1270-1277
dc.identifier.issn
0022-3646
dc.identifier.uri
http://hdl.handle.net/11336/94737
dc.description.abstract
Previous study has shown that Porphyra conchocelis is sensitive to high levels of PAR (400–700 nm) as well as ultraviolet radiation (UVR: 280–400 nm), resulting in high inhibition of photosynthesis. However, little is known about whether the inner covering layer of the shell, in which the conchocelis lives, may provide protection against solar UVR. Our study indicates that the covering calcareous matrix is about 0.06 mm thick, transmitting 63, 47, and 28% of PAR, ultraviolet radiation A (UVA: 315–400 nm), and ultraviolet radiation B (UVB: 280–315 nm), respectively. We used a shading layer that simulated the above transmissions, and the effective quantum yield of PSII and photosynthetic carbon fixation in the conchocelis increased to greater extents in the presence of UVA or UVB. Attenuation of UVA by 19% and UVB by 37% due to the shading layer increased the PSII yield by 44%–77% and photosynthetic carbon fixation by about 60%. Our study clearly shows that the photosynthetic machinery of Porphyra haitanensis T. J. Chang et B. F. Zheng conchocelis was efficiently protected from harmful UVR by the covering calcareous matrix.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CARBON FIXATION
dc.subject
CONCHOCELIS
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EFFECTIVE QUANTUM YIELD
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PORPHYRA HAITANENSIS
dc.subject
UVR
dc.subject.classification
Otros Tópicos Biológicos
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
The conchocelis of porphyra haitanensis (rhodophyta) is protected from harmful UV radiation by the covering calcareous matrix
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-12-12T14:56:52Z
dc.journal.volume
45
dc.journal.number
6
dc.journal.pagination
1270-1277
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Jiang, Hongxia. Changshu Institute Of Technology; China. Xiamen University; China
dc.description.fil
Fil: Gao, Kunshan. Xiamen University; China
dc.description.fil
Fil: Helbling, Eduardo Walter. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Fundación Playa Unión. Estación de Fotobiología Playa Unión; Argentina
dc.journal.title
Journal Of Phycology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1529-8817.2009.00755.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1529-8817.2009.00755.x
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