Quantitative ultrastructural changes associated with lead-coupled luxury phosphate uptake and polyphosphate utilization
dc.contributor.author | Lazinsky, Diane | en_US |
dc.contributor.author | Sicko-Goad, Linda | en_US |
dc.date.accessioned | 2006-09-11T19:43:32Z | |
dc.date.available | 2006-09-11T19:43:32Z | |
dc.date.issued | 1986-11 | en_US |
dc.identifier.citation | Sicko-Goad, Linda; Lazinsky, Diane; (1986). "Quantitative ultrastructural changes associated with lead-coupled luxury phosphate uptake and polyphosphate utilization." Archives of Environmental Contamination and Toxicology 15(6): 617-627. <http://hdl.handle.net/2027.42/48065> | en_US |
dc.identifier.issn | 0090-4341 | en_US |
dc.identifier.issn | 1432-0703 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/48065 | |
dc.description.abstract | Quantitative electron microscopy (stereology) was used to assess the ultrastructural response of three algae representative of the classes Chlorophyceae, Cyanophyceae, and Bacillariophyceae to lead-coupled polyphosphate degradation. The organisms were exposed to a culture medium concentration of 20 ppb Pb for 3 hr at the time of luxury phosphate uptake and subsequently transferred to phosphorus and lead-free medium. A differential sensitivity was observed as follows: Plectonema > Scenedesmus > Cyclotella . In Plectonema and Scenedesmus , detrimental cytological changes were observed when the polyphosphate relative volume dropped below 0.5%, which was approximately the P-starvation level of polyphosphate. Few significant ultrastructural changes were observed in Cyclotella after one week in P-deficient medium. At this time, the relative volume of polyphosphate was still 1.5%. Although a few significant ultrastructural changes occurred with phosphate deprivation, the greatest numbers of changes occurred in cells that had been exposed to a short-term (3 hr) low level of Pb. Changes in the relative volume of polyphosphate in all three organisms suggest that Plectonema and Scenedesmus have higher phosphate nutrient requirements than Cyclotella . The ecological implications of metal sequestering by polyphosphate are discussed. | en_US |
dc.format.extent | 1570534 bytes | |
dc.format.extent | 3115 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Springer-Verlag; Springer-Verlag New York Inc. | en_US |
dc.subject.other | Terrestrial Pollution | en_US |
dc.subject.other | Forestry | en_US |
dc.subject.other | Ecology | en_US |
dc.subject.other | Agriculture | en_US |
dc.subject.other | Environment, General | en_US |
dc.subject.other | Environment | en_US |
dc.subject.other | Soil Science & Conservation | en_US |
dc.subject.other | Waste Management/Waste Technology | en_US |
dc.subject.other | Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution | en_US |
dc.title | Quantitative ultrastructural changes associated with lead-coupled luxury phosphate uptake and polyphosphate utilization | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Public Health | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Great Lakes Research Division, The Institute of Science and Technology, The university of Michigan, 48109, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationum | Great Lakes Research Division, The Institute of Science and Technology, The university of Michigan, 48109, Ann Arbor, Michigan | en_US |
dc.contributor.affiliationumcampus | Ann Arbor | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/48065/1/244_2005_Article_BF01054908.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1007/BF01054908 | en_US |
dc.identifier.source | Archives of Environmental Contamination and Toxicology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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