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Acta Oceanologica Sinica 2010年第4期29卷 88-97页

作者： JIANG Fajun HU Zhangli HU Chaoqun South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Guangxi Academy of Sciences Nanning 530007 China College of Life Sciences Shenzhen University Shenzhen 518060 China

The community composition,abundance and culturablity of heterotrophic bacterioplankton in the Dapeng Bay of the South China Sea were investigated by morphological method,bacterial cultivation and biochemical methods over an annual *** and Pseudomonas were the predominant genera among the Gram-negative *** bacterioplankton abundance fluctuated from 2.07×10 8 to 2.44×10 9 cells/dm 3 ,and culturable bacteria abundance ranged between 0.1×10 6 and 16.07×10 6 CFU/dm 3 .The Culturablity of heterotrophic bacteria ranged between 0.01% and 1.31%.The relationship between bacterial culturablity and the environmental factors was also studied in different sites of the Dapeng *** the bay,a significantly positive relationship was evidenced between bacterial culturability and temperature,meanswhile bacterial culturability was significantly inversely related with *** positive relationship was shown at the central bay while a negative relationship was observed at the bay mouth and there was no significant correlation at top bay between bacterial culturablity and chlorophyll a of sea water.A positive relationship was found between culturability and DIN all the bay,but DIP showed a significantly negative relationship with bacterial culturability only at the mouth of the bay.

关键词： heterotrophic bacteria culturable bacteria culturablity environmental factors

Sulfur metabolism by marine heterotrophic bacteria involved in sulfur cycling in the ocean

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Science China Earth Sciences 2018年第10期61卷 1369-1378页

作者： Xin HU Jihua LIU Huaiwei LIU Guangchao ZHUANG Luying XUN Institute of Marine Science and Technology Shandong University State Key Laboratory of Microbial Technology Shandong University Department of Marine Sciences University of Georgia

Sulfur cycling in the biosphere is tightly interwoven with the cycling of carbon and nitrogen,through various biological and geochemical *** microorganisms,due to their high abundance,diverse metabolic activities,and tremendous adaptation potential,play an essential role in the functioning of global biogeochemical cycles and linking sulfur transformation to the cycling of carbon and *** many coastal regions are severely stressed by hypoxic or anoxic conditions,leading to the accumulation of toxic sulfide.A number of recent studies have demonstrated that dissimilatory sulfur oxidation by heterotrophic bacteria can protect marine ecosystems from sulfide ***-oxidizing bacteria have evolved diverse phylogenetic and metabolic characteristics to fill an array of ecological niches in various marine ***,we review the recent findings on the microbial communities that are involved in the oxidation of inorganic sulfur compounds and address how the two elements of sulfur and carbon are interlinked and influence the ecology and biogeochemistry in the *** the metabolic enzymes and pathways of sulfur-oxidizing bacteria not only provides an insight into the microbial sulfur metabolism,but also helps us understand the effects of changing environmental conditions on marine sulfur cycling and reinforces the close connection between sulfur and carbon cycling in the ocean.

关键词： Sulfur cycling Sulfur oxidation heterotrophic bacteria Metabolic pathway

Response of heterotrophic bacteria Abundance and Community Structure to Asian Dust Addition in the Oligotrophic Northwest Pacific Ocean

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Journal of Ocean University of China 2020年第3期19卷 722-728页

作者： CHEN Xi ZHANG Xiaohao ZHAO Yangguo LIU Guangxing ZHANG Chao GAO Huiwang College of Environmental Science and Engineering Ocean University of ChinaQingdao 266100China Beijing Sound Environmental Engineering Co.Ltd. Beijing 101102China Key Lab of Marine Environmental Science and Ecology Ministry of EducationOcean University of ChinaQingdao 266100China

The dust storms from the continent usually affect the abundance and diversity of planktons by supplying trace elements. As such, the response of heterotrophic planktonic bacteria to dusts, nutrients(i.e., nitrogen and phosphorus) or ferrous dosages was investigated in the Kuroshio Extension region of the Northwest Pacific Ocean(NWPO) through on-board incubation experiments during an oceanographic survey in spring 2014. The flow cytometry and 16S rRNA high-throughput sequencing methods were applied to explore the abundance and community structure of bacteria, and the percentage of high nucleic acid bacteria(HNA%). The results showed that the heterotrophic bacteria abundance was low(average 2.55×10^5 cells mL^-1) and subjected to both nitrogen(N) and ferrous(Fe) limitation. Sand-dust deposition observably promoted the activity of heterotrophic planktonic bacteria. The maximum abundance of heterotrophic bacteria was 6.98×10^5 cells mL^-1 in the dust-dosage group, which was 44% higher than the control(P bacterial community structure were ascribed to the dissolution of nutrients N and P. Comparing the results of different experimental groups, this study concluded that dust storm improved the abundance of heterotrophic bacteria by dissolution of N and Fe.

关键词： Northwest Pacific Asian dust heterotrophic bacteria 16S rRNA high-throughput sequencing bacteria abundance and community structure

Distribution Pattern of Photosynthetic Picoplankton and heterotrophic bacteria in the Northern South China Sea

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Journal of Integrative Plant Biology 2007年第3期49卷 282-298页

作者： Yu-Ming Cai Xiu-Ren Ning Cheng-Gang Liu Qiang Hao Ocean University of China Qingdao 266003 China State Oceanic Administration Key Laboratories of Marine Ecosystem and Biogeochemistry Hangzhou 310012 China Second Institute of Oceanography SOA Hangzhou 310012 China

The environmental regulation of plcoplankton distribution in the northern South China Sea was examined In winter and summer of 2004. The average abundance of Synechococcus, Prochlorococcus, and heterotrophlc bacteria was lower In winter （30, 21, and 780×10^3 cells/cm^3, respectively） than In summer （53, 85, and 1 090×10^3 cells/cm^3, respectively）, but the seasonal pattern was opposite for plcoeukaryotlc phytoplankton （4 500 and 3 200 cells/cm^3 In winter and summer, respectively）. Synechococcus, picoeukaryotes, and bacteria were most abundant in the nutrient-rich coastal zone and continental shelf, but Prochlorococcus was most abundant In the continental slope and open ocean. The vertical distribution of each photosynthetic group and heterotrophlc bacteria changed between the two seasons. Synechococcus populations with apparently different phycoerythrobilin content occurred at many stations In the summer. In addition, two different populations of Prochlorococcus were found：（i） small, weakly fluorescing cells in the surface layer; and （ii） larger, strongly fluorescent cells In the deep layer. The distribution pattern of photosynthetic plcoplankton and heterotrophlc bacteria depends on environmental effects and their ecophyslologlcal differences. The distribution of Synechococcus appeared to be related to nutrient availability, whereas the distribution of Prochlorococcus appeared to be limited by temperature. Synechococcus was the only plcophytoplankton with a consistent strong relationship with bacteria.

关键词： diel variation heterotrophic bacteria photosynthetic picoeukaryotes Prochlorococcus South China Sea spatial distribution structure standing stock Synechococcus

Diversity of culturable heterotrophic bacteria from the Mariana Trench and their ability to degrade macromolecules

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Marine Life Science & Technology 2020年第2期2卷 181-193页

作者： Xiuxiu Zhao Jiwen Liu Shun Zhou Yanfen Zheng Yanhong Wu Kazuhiro Kogure Xiao-Hua Zhang MOE Key Laboratory of Marine Genetics and Breeding College of Marine Life SciencesOcean University of China.Qingdao 266003China Laboratory for Marine Ecology and Environmental Science Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Atmosphere and Ocean Research Institute The University of Tokyo5-1-5.Kashiwanoha.KashiwaChiba 277-8564Japan

The Mariana Trench is the deepest location on earth and harbors unique microbial communities as evidenced by 16S rRNA gene amplicon and metagenomic *** culturable microorganisms from the Mariana Trench will contribute to a further understanding of hadal biogeochemical processes and act as a unique microbial reservoir with potential ***,825 bacterial strains,identified by 16S rRNA gene sequencing,were isolated from 12 water depths(0-10,400 m)of the Mariana Trench with 2216E and R2A media at 4℃ or 28℃ on four cruises during *** bacteria belong to four phyla,nine classes,27 orders,45 families and 108 ***,Gammaproteobacteria,Actinobacteria_c,Bacilli and Flavobacteriia were the most abundant classes,accounting for 37.9%,33.0%,11.8%,8.6%and 8.0%of the total bacterial isolates,respectively.2216E and R2A media were found to have a better selectivity to Bacilli and Flavobacteriia,*** strains were potential novel bacterial species with a 16S rRNA gene similaritybacteria in the Mariana Trench and they can produce a variety of extracellular *** study provides a valuable resource of microorganisms for investigating their biogeochemical roles in the Mariana Trench and for industrial applications.

关键词： Diversity heterotrophic bacteria The Mariana Trench Macromolecule Water column

Response of Marine Microalgae,heterotrophic bacteria and Their Relationship to Enhanced UV-B Radiation

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Journal of Ocean University of China 2009年第1期8卷 35-38页

作者： ZHOU Wenli TANG Xuexi XIAO Hui WANG You WANG Renjun College of Marine Life Sciences Ocean University of China Qingdao 266003 P. R. China Tianjin Key Laboratory of Aqua-ecology and Aquaculture Tianjin Agricultural University Tianjin 300384 P. R. China College of Life Science Qufu Narmal University Qufu 273165 P. R. China

Ozone depletion in the stratosphere has enhanced solar UV-B radiation reaching the Earth surface and has brought about significant effects to marine ecosystems. The effects of enhanced UV-B radiation on marine microalgae, heterotrophic bacteria and the interaction between them are discussed. The effects on marine microalgae have been proved to occur at molecular, cellular and population levels. Enhanced UV-B radiation increases microalgal flavonoid content but decreases their chlorophyll content and pho- tosynthesis rate; this radiation induces genetic change and results in DNA damage and change of protein content. There have been fewer studies on the effects of UV-B radiation on marine heterotrophic bacteria. Establishment of a microalgal ecological dynamic model at population and commuity levels under UV-B radiation has gradually become a hotspot. The effects of enhanced UV-B radiation on microalgae commtmities, heterotrophic bacterial populations and interaction between them will become a focus in the near future. This paper will make an overview on the studies concerning the effects of enhanced UV-B radiation on marine microalgae and heterotrophic bacteria and the interaction between them.

关键词： UV-B radiation effect microalgae heterotrophic bacteria

heterotrophic bacterial Floras in Industrial Area and Unpolluted Marine Environments around Qingdao

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Journal of Ocean University of Qingdao 2002年第1期1卷 59-62页

作者： DUZongjun LIYun YUDehua WANGXianghong CHENJixiang RobertsonP.A.W AustinB XUHuaishu CollegeofMarineLifeSciences OceanUniversityofQingdaoQingdao266003P.R.China DepartmentofBiologicalSciences Heriot-WattUniversityEdinburghEH144ASUK

From Oct. 1999 to Oct. 2000, the heterotrophic bacterial floras in the industrial marine environment around the Qingdao Power Plant (QPP) and in the unpolluted marine environments were investigated. The results showed that the numbers of the heterotrophic bacteria around QPP were much higher than those in unpolluted environments, and the average numbers in QPP Seawater, QPP Sediment, Unpolluted Seawater and Unpolluted Sediment were 5.4×104cfu(mL) -1, 5.0×105cfug -1, 3.0×102cfu(mL) -1 and 1.3×105cfug -1 respectively. Totally, 118 strains were isolated from QPP and 99 of them were Gram-negative. One hundred and twenty one strains were isolated from the unpolluted environments and 104 of them were Gram-negative. All the Gram-negative bacteria belonged to 13 genera. The distribution of the bacteria was varied in different marine environments. The results showed that the unpolluted marine environments contained much more Vibrio than seawater and sediment around QPP.

关键词： marine environments heterotrophic bacteria bacterial floras Qingdao

heterotrophic bacterial Flora in Aquaculture Area around Xuejiadao

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Journal of Ocean University of Qingdao 2002年第2期1卷 157-160页

作者： DUZongjun LIYun YUDehua WANGXianghong CHENJixiang RobertsonP.A.W. AustinB. XUHuaishu CollegeofMarineLifeSciences OceanUniversityofQingdaoQingdao266003P.R.China DepartmentofBiologicalSciences Heriot-WattUniversityEdinburghEH144ASU.K.

From Oct., 1999 to Oct., 2000, the heterotrophic bacterial flora in the aquaculture area around Xuejiadao was investigated. The result shows that the populations of the heterotrophic bacteria are heavier in summer and autumn than those in winter and spring. The average populations in seawater, sediment, the surface of seaweed and the surface of fish are 1.4×10 4 cfu mL -1, 5.4×10 6 cfu g -1, 1.5×10 6 cfu g -1 and 1.8×10 3 cfu cm -2, respectively. A total of 301 strains were isolated, among them 259 were Gram-negative. All the Gram-negative bacteria belong to 13 genera and some genera of Enterobacteriaceae. The communities of bacteria are slightly different among the samples. In the body surface of fish, Genus vibrio is dominant. In the remaining samples, dominant genus is Aeromonas.

关键词： heterotrophic bacteria bacterial flora aquaculture

Universally improving effect of mixed electron donors on the CO_2 fixing efficiency of non-photosynthetic microbial communities from marine environments

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Journal of Environmental Sciences 2014年第8期26卷 1709-1716页

作者： Jiajun Hu Lei Wang Shiping Zhang Yuanqing Wang Fangming Jin Xiaohua Fu Huirong Li School of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji University Low-Carbon Conversion Science and Engineering Center Shanghai Advanced Research InstituteChinese Academy of Sciences School of Environmental Science and Engineering Shanghai Jiao Tong University Polar Research Institute of China

The universality of improved CO2 fixing upon the addition of mixed electron donors（MEDs）composed of Na2 S,NO2-,and S2O32-to non-photosynthetic microbial communities（NPMCs）obtained from 12 locations in four oceans of the world was validated. The CO2 fixing efficiencies of NPMCs were universally enhanced by MED compared with those obtained using H2 alone as electron donor,with average increase of about 276%. An increase in microbial inoculation concentration could increase the net amount of CO2 fixing to853.34 mg/L in the presence of MED. NO2-and S2O32-may play the roles of both electron acceptor and electron donor under aerobic conditions,which may improve the energy utilization efficiency of NPMC and enhance the CO2 fixation efficiency. The sequence determination of 16 S ribosomal deoxyribonucleic acid（rDNA） from 150 bacteria of NPMC showed that more than 50% of the bacteria were symbiotic and there were many heterotrophic bacteria such as Vibrio natriegens. These results indicate that NPMC acts as a symbiotic CO2 fixing system. The interaction between autotrophic and heterotrophic bacteria may be a crucial factor supporting ladder utilization and recycling of energy/carbon source.

关键词： Non-photosynthetic microbial community Mixed electron donors CO2fixing Symbiotic bacteria heterotrophic bacteria

Bioleaching of copper oxide ore by P seudomonas aeruginosa

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International Journal of Minerals,Metallurgy and Materials 2013年第12期20卷 1130-1133页

作者： M.A.Shabani M.Irannajad A.R.Azadmehr M.Meshkini Department of Mining & Metallurgical Engineering Amirkabir University of Technology Iranian Academic Center for Education Culture and Research (ACECR)Branch of Amirkabir

Bioleaching is an environmentally friendly method for extraction of metal from ores. In this study, bioleaching of copper oxide ore by Pseudomonas aeruginosa was investigated. Pseudomonas aeruginosa is a heterotrophic bactermm that can produce various organic acids in an appropriate culture medium, and these acids can operate as leaching agents. The parameters, such as particle size, glucose percentage in the culture medium, bioleaching time, and solid/liquid ratio were optimized. Optimum bioleaching conditions were found as follows： particle size of 150-177 μm, glucose percentage of 6%, bioleaching time of 8 d, and solid/liquid ratio of 1：80. Under these conditions, 53% of copper was extracted.

关键词： copper ore treatment copper oxides bioleaching organic acids heterotrophic bacteria Pseudomonas aeruginosa