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dc.contributor.authorLi, Ping(Shantou Univ, Inst Marine Biol, Shantou 515063, Guangdong, Peoples R China)zh_CN
dc.contributor.authorGao, Kunshanzh_CN
dc.contributor.author高坤山zh_CN
dc.date.accessioned2011-04-26T08:02:26Z
dc.date.available2011-04-26T08:02:26Z
dc.date.issued2008-11zh_CN
dc.identifier.citationPHYCOLOGIA,2008,47(6):573-579zh_CN
dc.identifier.issn0031-8884zh_CN
dc.identifier.urihttp://dx.doi.org/doi:10.2216/08-19.1zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/1851
dc.description.abstractMorphological characteristics of Artlrroshira spp. are important for product quality and harvesting efficiency. Solar ultraviolet radiation (UVR) has been previously shown to break their spirals. To further explore the relationship of morphology and UVR, we examined the spiral length, helix diameter, helical pitch and orientation of A. platensis while exposing the cells to solar radiation with or without UVR. Although solar exposures initially led to breakage of the spirals, no significant difference was found among the treatments with or without UVR. During the long-term exposures to solar radiation, the spirals became more compressed in the outdoor strain (grown under sunlight for decades) but more loosened in the indoor strain [grown under artificial photosynthetically active radiation (PAR) for decades]. Spiral orientation was altered from the right- to left-handed only in the outdoor strain, with a frequency of less than 1%. Presence of UVR enhanced such an orientation change, and regrowing under indoor low PAR (UVR-free condition) reversed the orientation to right-handed. Structure of some membrane molecules was suggested to be altered by high solar PAR and UVR.zh_CN
dc.description.sponsorshipNational Natural Science Foundation of China [90411018]; Guangdong Provincial Natural Science foundation [06105649]; Hainan DIC Microalgae Co. Ltdzh_CN
dc.language.isoenzh_CN
dc.publisherINT PHYCOLOGICAL SOCzh_CN
dc.subjectArthrospira platensiszh_CN
dc.subjectCyanobacteriumzh_CN
dc.subjectHelix orientationzh_CN
dc.subjectMorphologyzh_CN
dc.subjectSolar radiationzh_CN
dc.subjectUVRzh_CN
dc.titleEffects of solar UV and visible radiations on the spiral structure and orientation of Arthrospira (Spirulina) platensis (Cyanophyta)zh_CN
dc.typeArticlezh_CN


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