The morphology and toxicity of Pseudo-nitzschia strain PP0201-01, isolated near the estuary of Changjiang (Yangtze) River in Year 2002 and tentatively identified as Pseudo-nitzschia pungens, were studied. The strain w...The morphology and toxicity of Pseudo-nitzschia strain PP0201-01, isolated near the estuary of Changjiang (Yangtze) River in Year 2002 and tentatively identified as Pseudo-nitzschia pungens, were studied. The strain was identified morphologically as P. pungens using scanning electronic microscope (SEM). The ana- lytical results of LC-PDA (liquid chromatography with photodiode array detector), LC-MS (liquid chromatogra- phy with mass detector), and the toxicity data from mouse bioassay, showed that no domoic acid was produced by the strain. However, the mechanism of domoic acid production by Pseudo-nitzschia species is complicated. More works are needed to assess the toxic species and to evaluate the potential risk of amnesic shellfish poison- ing (ASP) in China.展开更多
Two new triterpenoid saponin dimers, named rubupungenoside A (1) and B (2), have been isolated from the aerial parts of Rubus pungens Camb. var. oldhamii. Their structures have been established on the basis of spectro...Two new triterpenoid saponin dimers, named rubupungenoside A (1) and B (2), have been isolated from the aerial parts of Rubus pungens Camb. var. oldhamii. Their structures have been established on the basis of spectroscopic methods and chemical transformation's.展开更多
Interannual variations of Preudonitzschia pungens f. pungens in Jiaozhou Bay werefollowed during 1991-1994 and 1997-1999 using data collected by the Jiaozhuo Bay Ecological Re-search Station (JERS), China Ecological R...Interannual variations of Preudonitzschia pungens f. pungens in Jiaozhou Bay werefollowed during 1991-1994 and 1997-1999 using data collected by the Jiaozhuo Bay Ecological Re-search Station (JERS), China Ecological Research Network (CERN) at 10 investigation stations. Timeseries analysis revealed that P. pungens f. pungens was present at most stations and most abundant ma-展开更多
基金Supported by the projects of Ministry of Science and Technology (No.2001CB409704 and No. 2001BA804A20), and the innovation project ofthe Institute of Oceanology, CAS (No. 200223107)
文摘The morphology and toxicity of Pseudo-nitzschia strain PP0201-01, isolated near the estuary of Changjiang (Yangtze) River in Year 2002 and tentatively identified as Pseudo-nitzschia pungens, were studied. The strain was identified morphologically as P. pungens using scanning electronic microscope (SEM). The ana- lytical results of LC-PDA (liquid chromatography with photodiode array detector), LC-MS (liquid chromatogra- phy with mass detector), and the toxicity data from mouse bioassay, showed that no domoic acid was produced by the strain. However, the mechanism of domoic acid production by Pseudo-nitzschia species is complicated. More works are needed to assess the toxic species and to evaluate the potential risk of amnesic shellfish poison- ing (ASP) in China.
文摘Two new triterpenoid saponin dimers, named rubupungenoside A (1) and B (2), have been isolated from the aerial parts of Rubus pungens Camb. var. oldhamii. Their structures have been established on the basis of spectroscopic methods and chemical transformation's.
基金This study was supported by Marine 863 project No.2001AA630509-2 and the 973 project 2001CB4O9700
文摘Interannual variations of Preudonitzschia pungens f. pungens in Jiaozhou Bay werefollowed during 1991-1994 and 1997-1999 using data collected by the Jiaozhuo Bay Ecological Re-search Station (JERS), China Ecological Research Network (CERN) at 10 investigation stations. Timeseries analysis revealed that P. pungens f. pungens was present at most stations and most abundant ma-
