郑天凌
个性化签名
- 姓名:郑天凌
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学术头衔:
博士生导师
- 职称:-
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学科领域:
微生物学
- 研究兴趣:
郑天凌,留法博士,微生物学教授、博士生导师;海洋环境科学国家重点实验室研究人员,学术骨干;国家教育部海洋环境科学创新群体成员。1987年7月于法国尼斯大学获理学博士学位;曾赴日本国京都大学(1993年),法国马赛大学、德国罗斯特克大学(1995,1996年),香港城市大学(1997年)进行高访或合作科研; 为国家自然科学基金委国际合作项目评审专家和学科评审组成员(8th);国际SCOR/IOC赤潮专家组中国委员会委员;中国微生物学会理事;中国环境微生物学专业委员会副主任;中国海洋学会青年工作委员会副主任;中华预防医学会分子生态学专业委员会委员;《微生物学报》、《地球科学进展》、《应用与环境生物学报》、《 中国农业生态学报》编委。合著了《环境微生物学》和《环境生物技术》教材两部。
先后主持或为主参加国家973、863、国家级、省部级重点项目及国家基金20多项;合著了《环境微生物学》和《环境生物技术》教材倆部。在国内外重要刊物发表学术论文100多篇;多项项目获奖,如:"中国沿海典型增养殖区有害赤潮发生动力学及防治机理研究" (九五重大攻关项目)获2003年度国家教育部科技进步一等奖。"台湾海峡初级生产过程及其调控机制研究",2003年获国家海洋局海洋科技创新成果二等奖。"微污染水源水生物氧化/气浮工艺制水技术",2002年获福建省科技进步三等奖。"啤酒废水的生物处理技术",1999年获厦门市科技进步三等奖。 "厦门西港与香港维港污染沉积过程研究",1998年获国家教育部科技进步三等奖。
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287
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成果数
8
【期刊论文】Organochlorine micropollutants in the Jiulong River Estuary and Western Xiamen Sea, China
郑天凌, K. Maskaoui a, J.L. Zhou b, *, T.L. Zheng a, c, H. Hong c, Z. Yu d
Marine Pollution Bulletin 51(2005)950-959,-0001,():
-1年11月30日
Organochlorine contaminants including 12 polychlorinated biphenyl (PCB) congeners and 18 insecticides were determined in water, pore water and sediments of the Jiulong River Estuary and Western Xiamen Sea, China. The results showed that the levels of the total PCBs ranged from non-detectable to 1500ngl-1 in water, from 209 to 3870ngl-1 in pore water, and from 2.78 to 14.8nggl-1 dry weight in sediments. Total organochlorine insecticide concentrations were from below the limit of detection to 2480ngl-1 in water, from 267 to 33400ngl-1 in pore water, and from 4.22 to 46.3nggl-1 dry weight in sediments. Concentrations of PCBs and insecticides in pore water were significantly higher than those in surface water, due to the high affinity of these hydrophobic compounds for sediment phase. The PCB congeners with the highest concentrations were CB153, CB180 and CB194, which together accounted for 68-87% of total PCBs in water, pore water and sediment. Among the hexachlorocyclohexane (HCH) compounds, beta-HCH was found to be a major isomer. Analysis of 1,1,1-trichloro-2,2-bis-chlorophenyl-ethane (DDT) and its metabolites showed that 1,1-dichloro-2[o-chlorophenyl]-2[p-chlorophenyl]-ethylene (DDE) was dominant in the group. In comparison to a 1998 study in the Western Xiamen Sea, levels of organochlorines were enhanced due probably to recent inputs and changes in sediments.
Organochlorine insecticides, DDT, Lindane, PCBs, Jiulong River Estuary, Western Xiamen Sea
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【期刊论文】Impact of initial phage/host ratio and nutrient addition on coexistence in a phage-host system
郑天凌, Arite Wolf, , TianLing Zheng, Karl-Paul Witzel, G
Aquat Microb Ecol 35: 131-139, 2004,-0001,():
-1年11月30日
The influence of specific phages on the population size of their host bacteria was studied using a model system of a selected phage and its host bacterium, identified as Aeromonas sp. Isolated from a lagoon in the southern Baltic Sea. For all initial phage/host ratios (PBR [phage/bacterium ratio] of 0.1 to 100), phage and host abundances reached a ratio of about 5 to 50 within the first 8h Interestingly, this range of phage/bacterium ratios of a single phage-host system corresponds to the ratio of virus to bacterial abundance found in natural habitats. The proportion of sensitive cells containing mature phage particles increased in the first 4h to 40%, and then decreased (at rates dependent on the initial ratio) within 12h (initial PBR of 100), 48 h (initial PBR of 10 and 1) and 72h (initial PBR of 0.1) to less than 1%. There was evidence for rapid development of immunity (probably pseudolysogeny), especially at high initial phage concentrations. After 96h incubation, carbon, nitrogen and phosphorus were added to improve the nutritional state of the bacteria. Although nutrients were added to all treatments when phage/host ratios were nearly equal, quite different reactions were observed for the bacteria populations with different initial PBRs. Those with low initial PBRs showed the most pronounced increase.
Phage-host system • Immunity • Lysogeny • Pseudolysogeny • Phage/, bacterium ratio • Coexistence
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【期刊论文】Purification and characterization of polyphenol oxidase from Henry chestnuts (Castanea henryi)
郑天凌, Jinsen Xu
J Wood Sci (2004) 50: 260-265,-0001,():
-1年11月30日
Polyphenol oxidase from Castanea henryi nuts was partially purified. Some characteristics of the enzyme were then determined to help devise measures for the prevention of undesirable enzymatic browning during storage and processing of the nuts. Preparation of acetone powder extracts of the nuts, ammonium sulfate precipitation, dialysis, and gel filtration resulted in 37-fold purification of the enzyme with a yield of 13%. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis and the excitation spectrum confirmed the enzyme preparation to be homogeneous. The approximate molecular weight of the enzyme was determined by gel filtration to be 69 kD. The enzyme catalyzed the xidation of catechol and pyrogallic acid as substrates but did not affect cresol or tyrosine. Using catechol as substrate, pnitrophenol, thiourea, orcinol, and naphthol showed strong inhibition. The optimal pH and temperature for the enzyme were pH 5.0 and 40℃, respectively. The enzyme proved heat labile. When the enzyme was incubated at 70℃ for 30min, the remaining activity of the enzyme was only 8%. Possible approaches to applying the results of this study to the prevention of enzymatic browning in the production of C. henryi nuts is also discussed.
Polyphenol oxidase
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郑天凌, MASKAOUI Khalid†, ††, ZHENG Tianling†, ††*, HONG Huasheng††, YU Zhiming †††, YUAN Jianjun††††, HU Zhong†
Chinese Journal of Oceanology and Limnology Vol. 22, No.4, P. 431-435, 2004,-0001,():
-1年11月30日
In order to estimate the biodegradation of three polycyclic aromatic hydrocarbons (PAHs) compounds, bacterial strains were isolated from marine sediments in three heavily contaminated sites (Yuandang Lake, Dongdu Port and Aquacultural zones in Maluan Bay) in Xiamen Western Sea. The results show three bacterial strains, which used pyrene as the sole carbon source, were identified as strains of Aureobacterium sp., Arthrobacter sp., Rhodococcus sp. The PAH-degrading bacteria isolated had a strong ability to degrade phenanhrene, fluoranthene and pyrene at different degradation rates. The highest degradation rate was observed when three PAH compounds were mixed with an individual strain in the medium. The three PAHs were degraded after one week with a degradation rate of 89.94% for phenanthrene and 93.4% for both of fluoranthene and pyrene. In addition, after 25 days of incubation, the degradation rate was 99.98% for phenanthrene and 99.97% for both of fluoranthene and pyrene. Optical density was measured to estimate bacterial growth during the degradation of PAHs. Highest levels of bacterial growth were observed with a three PAH mixture in the culture, suggesting that the concentration of PAHs influenced bacterial growth and the highest levels of degradation for most series were detected after one week of incubation.
PAHs,, biodegradation,, bacteria,, Xiamen Western Sea
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【期刊论文】Current status of bacteriological parameters and DOC/POC in Xiamen coastal waters*
郑天凌, Khalid Maskaoui, Tianling Zheng†, Huasheng Hong, Zhiming Yu, Zhong Hu, Yun Tian, Lizhe Cai
Acta Oceanolgoica Sinica, Vol. 22, No.3, pp.443~451, 2003,-0001,():
-1年11月30日
The surface and bottom waters samples were collected from six locations in Xiamen western sea. The quantified estimation of bacterial production (3H-thymidine method) and observation of bacterial hetemtmphic activity (14C-glucose method) have been made in order to have a better under-standing of the role of marine bacteria and their activities. The results showed that the mean value of bacterial hetemtmphic activity was 9
Bacteriological parameters,, POC,, DOC,, Xiamen western sea
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【期刊论文】PAHs contamination and PAH-degrading bacteria in Xiamen Western Sea
郑天凌, Tian Yuna, b Zheng Tianlinga and Wang. Xinhongb*
Chemical Speciation and Bioavailability (2002), 14(1),-0001,():
-1年11月30日
Six stations were established in Xiamen Western Sea (24
PAHs,, concentration,, PAH-degrading bacteria
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【期刊论文】The distribution characteristics of bacterial b-glucosidase activity in Taiwan strait
郑天凌, Tianling Zheng a, *, Huasheng Hong b, Fei Wang b, Khalid Maskaoui a, Jianqiang Su a, Yun Tian a
Marine Pollution Bulletin 45(2002)168-176,-0001,():
-1年11月30日
Twenty stations were established in the near-shore regions of South Fujian Shoal (116
Heterotrophic bacteria, Extracellular enzyme, b-glucosidase activity, Taiwan strait
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郑天凌, ZHENG Tian-ling†, ††, TIAN Yun†, SU Jian-qiang†, ZHANG Yao†, JIAO Nian-zhi††
Chinese Journal of Oceanology and Limnlogy Vol.20, Special lssue, P.47-56, 2002,-0001,():
-1年11月30日
This paper deals with the application of lnirbiologieal parameters obtained by using AODC and SEM methods, and 3 H-thymidine ineoqoration into DNA nlethod tbr quantitative estimation of bacterial biomass, productivity anti growth doubling time in order to gaiJ better understanding of the role of marine bacteria and their activities in Xiamen western sea waters. The results showed that in the seawater surface, the mean valuv of total colifonus was 1.3
Xiamet western sea,, bacterial biomass,, bacterial productivity,, ecological roles,, doubling time
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