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浮游生物对持久性有机污染物迁移和转化影响的研究进展

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生态毒理学报 2024年第2期19卷 126-139页

作者：刘溱赵妍吕梦晨唐学玺中国海洋大学海洋生命学院青岛266003 青岛海洋科技中心海洋生态与环境科学功能实验室青岛266003

持久性有机污染物(persistent organic pollutants,POPs)被持续排放到自然环境中,严重危害环境安全和生命健康。海洋、河流等水环境是POPs重要的“汇”,作为水生食物链的起点,浮游生物在水生生态系统的物质循环和能量流动中扮演着重要... 详细信息

持久性有机污染物(persistent organic pollutants,POPs)被持续排放到自然环境中,严重危害环境安全和生命健康。海洋、河流等水环境是POPs重要的“汇”,作为水生食物链的起点,浮游生物在水生生态系统的物质循环和能量流动中扮演着重要的角色,其对POPs的吸附、吸收、转化及运输,在很大程度上影响了POPs的环境行为。本文将浮游生物对POPs迁移和转化的可能影响进行了总结,综合分析了浮游植物和浮游动物对POPs的吸附-吸收和生物富集/放大过程及影响以上过程的生物和环境因素,从脱卤代谢、氧化代谢和微生物联合代谢3个方面阐述了浮游生物对POPs的降解及转化机制,最后讨论了浮游生物的生物泵作用对POPs垂直迁移的影响。本文能够为水生生物影响POPs迁移和转化的研究提供重要参考。

关键词：持久性有机污染物浮游生物生物富集生物代谢生物泵

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退化海洋生态系统修复相关概念与修复模式的探讨

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中国海洋大学学报（自然科学版） 2024年第11期54卷 1-9页

作者：李永祺唐学玺张鑫鑫童欣中国海洋大学海洋生命学院山东青岛266003

退化海洋生态系统的修复是确保海洋资源可持续利用、保护海洋生态环境及建设海洋生态文明的关键举措,也是当前国内、外共同关注的焦点。本文在梳理海洋生态系统概念的形成与发展脉络,以及生态修复与退化海洋生态系统内涵的基础上,深入... 详细信息

退化海洋生态系统的修复是确保海洋资源可持续利用、保护海洋生态环境及建设海洋生态文明的关键举措,也是当前国内、外共同关注的焦点。本文在梳理海洋生态系统概念的形成与发展脉络,以及生态修复与退化海洋生态系统内涵的基础上,深入探讨了三个关键科学问题:提升科学认知、采用先进技术和加强适应性管理。这些问题的解决对于海洋生态系统的研究和修复工程的实施至关重要。

关键词：退化海洋生态系统生态修复适应性管理海洋资源利用海洋生态环境保护

鼠尾藻生殖托不同生长阶段的附生细菌多样性研究

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中国海洋大学学报（自然科学版） 2024年第6期54卷 98-107页

作者：秦子懿陈军臧宇杨智博唐学玺中国海洋大学海洋生命学院山东青岛266003 自然资源部第一海洋研究所山东青岛266061

为探明雌雄异株大型海藻——鼠尾藻(Sargassum thunbergii)生殖组织附生细菌群落结构是否随生殖组织的生长而发生相应变化,本研究通过高通量测序技术对鼠尾藻生殖托不同生长时期的附生细菌群落进行了分析。结果显示:变形菌门(Proteobact... 详细信息

为探明雌雄异株大型海藻——鼠尾藻(Sargassum thunbergii)生殖组织附生细菌群落结构是否随生殖组织的生长而发生相应变化,本研究通过高通量测序技术对鼠尾藻生殖托不同生长时期的附生细菌群落进行了分析。结果显示:变形菌门(Proteobacteria)和拟杆菌门(Bacteroidetes)是其核心菌门,与其他大型海藻附生细菌的组成类似;α多样性分析显示鼠尾藻生殖托生长初期阶段的附生细菌群落均匀程度更高;β多样性分析显示鼠尾藻生殖托附生细菌群落在不同生长阶段存在显著差异,且性别可能是影响鼠尾藻生殖托附生细菌群落结构组成的一个重要因素;线性判别分析效应量(Line discriminant analysis effect size, LEfSe)软件分析显示,鼠尾藻生殖托在生长初期、生长中期以及成熟期的附生微生物中分别包含11、15和4个可能与自身发育相关的生物标志物。本研究初步揭示了鼠尾藻生殖托附生细菌的多样性和复杂性,为今后精细刻画鼠尾藻藻体与其附生微生物之间相关作用的网络提供了基础数据,也为鼠尾藻的保护和利用提供了新的见解。

关键词：雌雄异株大型海藻鼠尾藻生殖托附生细菌 16S rRNA

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Ultraviolet irradiation induced oxidative stress and response of antioxidant system in an intertidal macroalgae Corallina officinalis L.

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Journal of Environmental Sciences 2010年第5期22卷 716-722页

作者： Lixia Li Jiqiang Zhao xuexi tang College of Marine Life Science Ocean University of China Qingdao 266003 China Chemistry and Biology College Yan Tai University Yantai 264005 China

The response of the antioxidant defense system of an intertidal macroalgae Corallina officinalis *** different dosages of UV-B irradiation was *** showed that superoxide dimutase （SOD） and peroxidase （POX） increased and then maintained at a relatively stable level when subjected to UV-B *** （CAT） activity under medium dosage of UV-B irradiation （Muv） and high dosage of UV-B irradiation （Huv） treatments were significantly *** peroxidase （APX） activity first remained unaltered and then increased in Huv *** addition,the assay on isozymes was carried out using non-denaturing polyacrylamide gel electrophoresis （PAGE）.The activities of some SOD isoforms were altered by *** new bands （POX V and POX VII） appeared upon exposure to all three UV-B *** III activity was increased by low dosage of UV-B irradiation （Luv）,whereas CAT III and CAT IV disappeared when the alga was exposed to Muv and *** bands of APX （APX VI and APX VII） were increased and a new band （APX X） was observed under Huv exposure.H 2 O 2 and thiobarbituric acid reacting substance （TBARS） increased under Muv and Huv ***,UV-B protection mechanisms are partly inducible and to a certain extent sufficient to prevent the accumulation of damage in ***.

关键词： UV-B irradiation Corallina officinalis L. superoxide dimutase catalase ascorbate peroxidase peroxidase

Biotic and Abiotic Conditions Can Change the Reproductive Allocation of Zostera marina Inhabiting the Coastal Areas of North China

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Journal of Ocean University of China 2019年第2期18卷 528-536页

作者： WANG Ming ZHANG Huanxin tang xuexi Qingdao National Laboratory for Marine Science and Technology Department of Marine Ecology College of Marine Life Sciences Ocean University of China

The relationships between reproductive allocation and different factors have been widely recognized for terrestrial plants, but scarcely for marine angiosperms. Focusing on the seagrass Zostera marina, we examined the change in biomass when it was partitioned to growth, vegetative propagation and reproductive allocation of Z. marina. We also evaluated the relationships between reproductive allocation and biotic and abiotic conditions in the coastal areas of north China. The results indicated that the reproductive allocation of Z. marina at the levels of genet, shoot and spathe was positively correlated with shoot characteristics such as height and biomass(P < 0.01), but was negatively correlated with branch number and leaf number per genet(P < 0.01). In addition, the allocation was also affected by other abiotic factors such as water column phosphate concentration(P < 0.05) and sediment total petroleum(P < 0.01). These findings indicated that both biotic and abiotic conditions significantly influenced the reproductive allocation of Z. marina, which may affect further the population dynamics.

关键词： Zostera marina reproductive allocation growth dynamics environmental factor

Oomycetes and fungi:important parasites on marine algae

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Acta Oceanologica Sinica 2010年第5期29卷 74-81页

作者： LI Wei ZHANG Tianyu tang xuexi WANG Bingyao College of Marine Life Science Ocean University of China Qingdao 266003 China College of Plant Protection Shandong Agricultural University Taian 271018 China

Considering that the field is largely unexplored and its importance to aquaculture,outline of oomycetes and fungi parasiting on marine algae was provided in this paper,including 15 species of oomycetes,six species of chytrids,31 Ascomycota species and one species of mitosporic *** natrue,both the oomycetes and chytrids frequently occurred and induced prevalences of disease which could destroy the populations of host plants ***,the parasites in Ascomycota on algae have never occurred as epidemics so *** issues relating to the field were discussed such as performing tests to satisfy Koch＇s postulates,investigations of host specificity,interactions between host and parasite and the potential effects of environmental factors on occurrence of a disease,which are urgent in need of further investigations.

关键词： oomycetes fungi parasites marine algae

Diversity and Bioactivity of Actinomycetes from Marine Sediments of the Yellow Sea

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Journal of Ocean University of China 2012年第1期11卷 59-64页

作者： ZHANG Shumin YE Liang tang xuexi College of Life Science Ocean University of ChinaQingdao 266003P.R.China State Key Laboratory of Long-acting and Targeting Drug Delivery Technologies Yantai 264003P.R.China

Among the 116 actinomycetes collected from marine sediments of the Yellow Sea,56 grew slowly and appeared after 2?3 weeks of *** the 56 strains,only 3 required seawater(SW) for growth,and 21 grew well in the medium prepared with SW rather than distilled water(DW),while the remaining 32 grew well either with SW or with *** representatives with different morphological characteristics,including 1 SW-requiring strain and 5 well-growing with SW strains,were selected for phy-logenetic analysis based on 16S rRNA *** strains belong to Micrococcaceae and Nocardiopsaceae *** other 4 strains belong to the family of *** the analyzed 6 strains,one was related to Nocardiopsis *** the other three were related to Streptomyces spp.,representing new *** testing of fermentation products from 3 SW-requiring strains and 21 well-growing with SW strains revealed that 17 strains possessed remarkable activities against gram-positive pathogen or/and tumor cells,suggesting that they were prolific resources for natural drug discovery.

关键词： Yellow Sea marine actinomycetes phylogenetic diversity bioactivity testing

Acute and chronic toxic effects of Pb^(2+)on polychaete Perinereis aibuhitensis:Morphological changes and responses of the antioxidant system

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Journal of Environmental Sciences 2014年第8期26卷 1681-1688页

作者： Yulu Tian Hongjun Liu Qixiang Wang Jian Zhou xuexi tang College of Marine Life Sciences Ocean University of China Marine Biology Institute of Shangdong Province

Perinereis aibuhitensis was used to assess adverse biological effects caused by acute and chronic Pb2＋exposure in artificial seawater under controlled laboratory conditions. In 96-hr acute toxicity experiments,the morphological changes showed a positive time/dose-dependent tendency,and the 96-hr LC50 value of Pb2＋was 686.41 mg/L. The responses of enzymatic and non-enzymatic antioxidants in tissues including catalase（CAT）,peroxidase（POD）,superoxide dismutase（SOD）,glutathione peroxidase（GSH-PX）,malondialdehyde（MDA） and the content of total soluble protein（TSP）,were investigated on days 1,4,7 and 10 after Pb2＋exposure under chronic toxicity testing. Results showed that the activation of the antioxidant system in P. aibuhitensis depended on the Pb2＋concentration and the duration of exposure ***,POD and SOD activities were induced on the first day of the exposure and decreased to the control level on day 10 after exposure. Therefore,these two indexes could be used to indicate oxidative stress associated with P. aibuhitensis exposure to Pb2＋.

关键词： Perinereis aibuhitensis Toxicity Antioxidant system Pb2+

Mechanism of Deca-BDE-induced apoptosis in Neuro-2a cells:Role of death-receptor pathway and reactive oxygen species-mediated mitochondrial pathway

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Journal of Environmental Sciences 2016年第8期28卷 241-251页

作者： Hongmei Chen xuexi tang Bin Zhou Ningning Xu You Wang Department of Marine Ecology College of Marine Life Sciences Ocean University of China

Decabromodiphenyl ether（BDE-209） is a prevalent polybrominated diphenyl ether（PBDE）congener known to have neurotoxicity. Effects of BDE-209 on Neuro-2a cells were performed in the present study and the possible apoptotic pathway was discussed. Results indicated that BDE-209 induced Neuro-2a cell apoptosis, increased the protein expression of Fas and Fas-associated death domain-containing protein（FADD） and activated the caspase-8 and-3activities in a concentration-dependent manner, inferring the death-receptor pathway was involved in the apoptotic process. Meanwhile, BDE-209 exposure increased the Bax/Bcl-2 ratio and decreased the cellular mitochondrial membrane potential（MMP） which led to cytochrome C released to the cytoplasm. The intracellular caspase-9 was elevated simultaneously,which caused downstream caspase cascade and triggered cell apoptosis. Moreover, BDE-209 exposure increased cellular reactive oxygen species（ROS） level in a concentration-dependent manner and the addition of N-acetyl-L-cysteine（NAC）, known as ROS scavengers, obviously reduced the apoptotic rate and a positive relationship was observed between the degree of apoptosis blocking and the loss of MMP and ROS production. We thus concluded that BDE-209 induced Neuro-2a cell apoptosis via the combination of the death-receptor signaling pathway and the mitochondrial signaling pathway. The elevated ROS production was considered to magnify the intracellular apoptosis signal and played a crucial role in apoptosis of Neuro-2a cells induced by BDE-209.

关键词： Decabromodiphenyl ether(BDE-209) Apoptosis Reactive oxygen species(ROS) Neuro-2a cells