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Oxidative stress responses to cadmium in the seedlings of a commercial seaweed Sargassum fusiforme

Acta Oceanologica Sinica 2020年第10期39卷 147-154页

作者： Tiantian Zhang Minheng Hong Mingjiang Wu Binbin Chen zengling ma College of Life and Environmental Science Wenzhou UniversityWenzhou 325035China Zhejiang Provincial Key Laboratory for Subtropical Water Environment and marine Biological Resources Protection Wenzhou 325035China

Cadmium(Cd)is a common heavy metal pollutant in the aquatic environment,generally toxic to plant growth and leading to growth inhibition and biomass *** study the oxidation resistance in Sargassum fusiforme seedlings in response to inorganic Cd stress,we cultured the seedlings under two different Cd levels:natural seawater and high Cd *** Cd stress significantly inhibited the seedlings growth,and darkened the thalli ***,the pigment contents,growth rate,peroxidase(POD)activity,dehydroascorbic acid(DHA)content,and glutathione reductase(GR)activity in *** were significantly reduced by high Cd ***,the Cd accumulation,Cd2+absorption rate,dark respiration/net photosynthetic rate(Rd/Pn),ascorbic acid(Vc)content,soluble protein(SP)content,glutathione(GSH),and the activities of superoxide dismutase(SOD)and catalase(CAT)of *** under Cd treatment significantly increased compared to the control *** decrease of malondialdehyde(MDA)was not *** *** seedlings increased the antioxidant activities of POD,SOD,Vc,and the AsA-GSH cycle to disseminate H2O2 and maintain healthy metabolism,high Cd stress caused Cd accumulation in the stem and leaves of *** *** excessive Cd significantly restricted photosynthesis and reduced photosynthetic pigments in the seedlings,resulting in growth inhibition and deep morphological color,especially of the *** levels of Cd in seawater had toxic effects on commercial *** seedlings,and risked this edible seaweed for human food.

关键词： Sargassum fusiforme cadmium stress oxidation resistance photosynthesis aquaculture marine pollution

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Peaked abundance of Calanus sinicus earlier shifted in the Changjiang River (Yangtze River) Estuary:a comparable study between 1959,2002 and 2005

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Acta Oceanologica Sinica 2011年第3期30卷 84-91页

作者： XU Zhaoli ma zengling WU Yumei Key and Open Laboratory of marine and Estuary Fisheries （Ministry of Agriculture） East China Sea Fisheries Research Institute Chinese Academy of Fisheries Science Shanghai 200090 China

The sea surface temperature （SST） of the East China Sea （ECS） increased in the past decades, which may have a great impact on the ecosystem of the ECS, including the changes in planktonpopulation structure. In this paper, the changes in peaked abundance of Calanus sinicus in the Changjiang River （Yangtze River） Estuary were compared between 1959 and 2002, based on the data collected from the seasonally oceanographic cruises and those performed in spring of 2005. It was much higher in spring compared with that in other seasons both in 1959 and 2002. Furthermore, in spring 2005, the time for occurrence and decrease of the peaked C. sinicus abundance advanced about one month, accompanying the increase in the sea surface water temperature （SST）. It peaked in June and decreased in July in 1959, however, in 2005, it peaked in may and attenuated sharply in early June. The earlier decrease of peaked C. sinicus abundance may further deteriorate the ecosystem in the Changjiang River Estuary and north nearshore of the ECS.

关键词： Calanus sinicus East China Sea (ECS) temperature Changjiang River (Yangtze River) Estuary zooplankton

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Tidal water exchanges can shape the phytoplankton community structure and reduce the risk of harmful cyanobacterial blooms in a semi-closed lake

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Journal of Oceanology and Limnology 2022年第5期40卷 1868-1880页

作者： Wenxu ZHENG Renhui LI Wenli QIN Binbin CHEN Min WANG Wanchun GUAN Xiaoling ZHANG Qiao YANG Min ZHAO zengling ma Zhejiang Provincial Key Laboratory for Subtropical Water Environment and marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution Wenzhou UniversityWenzhou 325035China Department of marine Biotechnology School of Laboratory Medicine and Life ScienceWenzhou Medical UniversityWenzhou 325035China marine Science and Technology College Zhejiang Ocean UniversityZhoushan 316022China School of Petrochemical Engineering and Environment Zhejiang Ocean UniversityZhoushan 316022China

For estuaries,inland lakes play a vital role in the ecological balance under the impact of tide *** effect of tides-induced water exchange on phytoplankton community in a semi-closed lake was studied and compared with that of an adjacent closed lake in the Oujiang River mouth in Zhejiang,East China Sea,from June 29,2020 to June 14,*** show that the dominant species,abundance,dominance,and diversity of the phytoplankton species between the two lakes were significantly *** the closed lake,cyanobacteria were the dominant species during the study *** the semi-closed lake,the diversification of the dominant species was greater,and some species of diatoms and green algae became *** average phytoplankton abundance in the closed lake was 6 times of that in the semi-closed *** average dominance of cyanobacteria in the closed lake was 0.96,and those in the semi-closed lake and the Oujiang River were 0.51 and 0.22,*** blooms occurred throughout the study time in the closed lake but not in the semi-closed ***,the species diversity richness of the phytoplankton in the semi-closed lake was higher than that of the closed one,and the phytoplankton community between the closed lake and semi-closed lake could be divided into distinctly different groups based on non-metic multidimensional scaling analysis(NMDS)and analysis of similarities(ANOSIM)*** salinity of the water was significantly greater and the transparency significantly smaller in the semi-closed lake than those in the closed ***,water exchange driven by local tidal movement increased salinity and decreased transparency of water,which consequently shaped the community structures of different phytoplankton and reduced the risk of a cyanobacterial bloom outbreak in the semi-closed lake.

关键词： estuary harmful cyanobacterial blooms phytoplankton community water exchange tidal movement environmental parameters

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Effects of residual chlorine on the mortality, grazing and respiration of Labidocera euchaeta (Copepoda)

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Acta Oceanologica Sinica 2011年第2期30卷 96-102页

作者： ma zengling LIN Hongping GU Xiaolian XU Zhaoli Key and Open Laboratory of marine and Estuary Fisheries （Ministry of Agriculture） East ChinaSea Fisheries Research Institute Chinese Academy of Fisheries Science Shanghai 200090 China Institute of Life Science and Technology Zhanjiang Normal University Zhanjiang 524048 China

In this study,the authors investigated the effects of residual chlorine on mortality,grazing and respiration of Labidocera euchaeta in *** grazing rate was evaluated by subtraction method of food concentration and respiration rate was measured using oxygen *** was found that the lethal effect of residual chlorine on *** increased with enhanced concentration and prolonged *** medium lethal concentration （LC 50 ） of chlorine for *** in 24 h was about 0.58 mg/L and the safe concentration was about 0.21 mg/***,the grazing and respiration of *** decreased by 32.6% and 18.9% when exposed to 0.2 mg/L residual chlorine for 4 *** indicated that the physiological activities of zooplankton could be suppressed by the residual chlorine less than the safety ***,both survival and physiological activities of the organisms living in the thermal （nuclear） power plant discharging waters should be considered when carrying out the ecological risks assessment.

关键词： copepod grazing Labidocera euchaeta residual chlorine respiration zooplankton

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Competitiveness of alga Microcystis aeruginosa co-cultivated with cyanobacterium Raphidiopsis raciborskii confirms its dominating position

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Journal of Oceanology and Limnology 2022年第5期40卷 1804-1818页

作者： zengling ma Xiaoqiao ZHANG Renhui LI Min WANG Wenli QIN He ZHANG Gang LI Henguo YU Chuanjun DAI Min ZHAO Zhejiang Provincial Key Laboratory for Subtropical Water Environment and marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution Wenzhou UniversityWenzhou 325035China Key Laboratory of Tropical marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Microcystis aeruginosa has always been regarded as the main culprit of cyanobacterial blooms in ***,in recent years,Raphidiopsis raciborskii has gradually replaced *** as the culprit of cyanobacterial blooms in some tropical and subtropical shallow *** reveal which one plays a more dominant role,interactions between cylindrospermospin(CYN)-producing *** and microcystins(MCs)-producing or non-MCs-producing *** strains were studied using bialgal cultures at different initial ratios of biomasses of the two species at 25℃.During the co-cultivation,the *** strains inhibited the growth and heterocyst formation of *** filaments,and thus occupied a dominant position during the co-cultivation regardless of the initial biomass ratios in the *** addition,the MCs-producing M aeruginosa strain contributed to a higher portion of the total biomass and exerted a stronger inhibitory effect on *** compared with the non-MCs-producing ***,the growth of both MCs-producing and non-MCs-producing *** strains was stimulated by *** in the co-cultures compared with *** monoculture,indicating that *** could outcompete *** if given enough time,enabling it to develop into the dominant species even in very low initial *** our best knowledge,this is the first report on the loss of heterocyst formation by a species of cyanobacteria that resulted from interactions between two different species of *** findings indicate that it is difficult for *** to replace the dominant position of *** under the experimental environmental condition,and the allelopathic effects of *** on *** could significantly contribute to the success of ***.

关键词： competition growth heterocyst Microcystis aeruginosa morphology Raphidiopsis raciborskii

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Harmful algal bloom-forming dinofl agellate Prorocentrum donghaiense inhibits the growth and photosynthesis of seaweed Sargassum fusiformis embryos

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Journal of Oceanology and Limnology 2021年第6期39卷 2237-2251页

作者： Caixia WANG Min WANG Binbin CHEN Wenli QIN Lidong LIN Chuanjun DAI Hengguo YU Renhui LI Min ZHAO zengling ma Zhejiang Provincial Key Laboratory for Subtropical Water Environment and marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China National and Local Joint Engineering Research Center of Ecological Treatment Technology for Urban Water Pollution Wenzhou UniversityWenzhou 325035China Dongtou Fisheries Science and Technology Research Institute Wenzhou 325700China

Harmful algal bloom(HAB)is an ecological disaster to local *** present,its impact on macrophytes has not been well *** this study,we cultivated sexually propagated embryos of S argassum fusiformis-an edible seaweed-in Prorocentrum donghaiense suspensions at different cell densities(0,0.50×10^(5),0.75×10^(5),1.00×10^(5),and 1.50×10^(5) cells/mL)for 10 days,during which growth and photosynthetic activities of the embryos were determined,and a monocultivation was set up for *** show that the relative growth rate and photosynthetic activities of the embryos co-cultivated with *** were inhibited mostly and significantly in the cell densities of 0.75×10^(5),1.00×10^(5),and 1.50×10^(5) cells/mL,and the inhibitory effects increased in overall with increased cell *** maximum relative electron transport rates(rETR max)and apparent photosynthetic efficiency(a)of co-cultivated embryos were all significantly lower than monocultivation ones on the 10 th ***,the photosynthetic activity detected by chlorophyll-a fluorescence transient(i.e.,OJIP),the electron transport among electron transfer accepters of PSII(photosystem II)and that from PSII to PSI(photosystem I)was restricted,which is probably responsible for the decreases of rETR max andain the co-cultivated *** addition,parts of the photosynthetic reaction centers of PSII in the co-cultivated embryos were ***,*** bloom could restrain the development and photosynthetic activities of *** embryos,reduce the seedlings stock,and eventually hinder the development of *** production industry.

关键词： embryo JIP-test photosynthesis Prorocentrum donghaiense Sargassum fusiformis harmful algal bloom

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Integrated microalgae culture with food processing waste for wastewater remediation and enhanced biomass productivity

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Chinese Chemical Letters 2023年第2期34卷 636-643页

作者： Angela Paul Peter Kit Wayne Chew Apurav Krishna Koyande Heli Siti Halimatul Munawaroh Amit Bhatnagar Yang Tao Chihe Sun Fubao Sun zengling ma Pau Loke Show Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia Zhejiang Provincial Key Laboratory for Subtropical Water Environment and marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China Study Program of Chemistry Department of Chemistry EducationFaculty of Mathematics and Science EducationUniversitas Pendidikan IndonesiaBandung 40154Indonesia Department of Separation Science LUT School of Engineering ScienceLUT UniversitySammonkatu 12FI 50130MikkeliFinland College of Food Science and Technology Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Industrial Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan UniversityWuxi 214122China Department of Sustainable Engineering Saveetha School of EngineeringSIMATSChennai 602105India

Waste generation from food manufacturing facilities poses a serious hazard like environmental degradation, water pollution, and land pollution due to its high nutrient composition. Specifically, solid waste(powder) disposal requires additional energy sources in terms of scientific treatment, structured collection, and disposal packaging according to the safety regulation. Thus, this research discusses the viewpoint of integrating food processing waste as an organic carbon source with BG-11 medium for Chlorella vulgaris(FSP-E) growth. The food processing waste powders investigated in this study were obtained from milk, and biscuit manufacturing facilities. The culture medium was modified by combining both BG-11 and food processing waste powders to identify the optimal algal growth and biochemical *** to the microalgae grown in BG-11 alone(IBG), the combination of biscuit waste and IBG produced higher biomass concentration(44%), with increased lipid(11%), protein(20%), and carbohydrate(57%) contents. Chlorella vulgaris was able to uptake nutrients from the culture medium with combination of food processing waste and IBG thus enhancing its growth. The results obtained also indicate that an integrated culture system using food processing waste and synthetic sources can generate energy out of waste by improving the bio-composition of the microalgae biomass.

关键词： Medium contamination Food processing Waste powder Organic medium Waste remediation

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铜绿微囊藻(Microcystis aeruginosa)次生代谢物对普通小球藻(Chlorella vulgaris)生长及有效量子产率的影响

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湖泊科学 2018年第3期30卷 732-740页

作者：方婷轩马增岭温州大学生命与环境科学学院浙江省亚热带水环境与海洋生物资源保护重点实验室温州325035 浙江省环境监测中心杭州310012

浮游植物间的交互化感作用被认为是自然水体中浮游生物群落演替及优势种转换的主要因素之一.铜绿微囊藻(Microcystis aeruginosa)是富营养化湖泊中的常见蓝藻,其产毒品系相较非产毒品系具有较高的竞争优势,其产生的主要次生代谢产物微... 详细信息

浮游植物间的交互化感作用被认为是自然水体中浮游生物群落演替及优势种转换的主要因素之一.铜绿微囊藻(Microcystis aeruginosa)是富营养化湖泊中的常见蓝藻,其产毒品系相较非产毒品系具有较高的竞争优势,其产生的主要次生代谢产物微囊藻毒素-LR(MC-LR)通常被认为是重要的化感物质.但是到目前为止其在水生生态系中的生物学功能尚不明确.为探究并区分MC-LR及其他次生代谢产物对浮游植物的化感效应,本文研究了MC-LR与高浓度普通小球藻(Chlorella vulgaris)生长及有效量子产率的剂量—效应关系;比较了能够产生显著抑制效应的MC-LR、能够产生同等浓度MC-LR的产毒品系铜绿微囊藻滤液以及细胞粗提液对小球藻生长及有效量子产率的抑制效应.结果显示,MC-LR能够对小球藻生长及有效量子产率产生抑制作用,并且抑制率随着MC-LR浓度的增加而增大.在用200μg/L及以上浓度的MC-LR感染24 h后,叶绿素a浓度为1500μg/L的小球藻的生长与有效量子产率均比对照组显著降低.能够产生相同浓度MC-LR的产毒品系铜绿微囊藻细胞滤液对其没有产生显著影响,而其细胞粗提液却能够产生更强的抑制效应.与MCLR处理组相比,粗提液处理组小球藻的生长及有效量子产率分别降低了14%和3%.以上结果表明,MC-LR对普通小球藻的化感作用具有剂量依赖性;MC-LR之外的其他次生代谢物也能够产生抑制效应.

关键词：铜绿微囊藻次生代谢物微囊藻毒素 MC-LR,普通小球藻生长有效量子产率

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Effect of global warming on the distribution of Lucifer intermedius and ***(Decapoda) in the Changjiang estuary

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Progress in Natural Science:materials International 2009年第10期19卷 1389-1395页

作者： zengling ma,Zhaoli Xu,Jin Zhou Key and Open Laboratory of marine and Estuary Fisheries,Ministry of Agriculture of China,East China Sea Fisheries Research Institute,Chinese Academy of Fisheries Sciences,Shanghai 200090,China Key and Open Laboratory of marine and Estuary Fisheries Ministry of Agriculture of China East China Sea Fisheries Research Institute Chinese Academy of Fisheries Sciences Shanghai 200090 China

We conducted an oceanographic censusin 1959,2002,and 2005 to evaluate changes in the temporo-spatial distribution and abundance of Lucifer intermedius and *** in the Changjiang *** general,the abundance and frequency of occurrence(OF) for these two species were highest during the *** measured a significant change in the abundance and OF between *** abundance and OF of *** increased from 3.7 individuals m 3 and 66.67%,respectively,in 1959,to 8.93 individuals m 3 and 85.19%,in *** 1959,*** was only found during the summer(abundance:0.01 individuals m 3,OF:3.70%).However,in 2002,this species was collected during all seasons except the ***,abundance(0.47 individuals m 3) and OF(25.93%) were higher in 2002 than in *** increases in abundance and OF were measured during cruises during the spring of *** hypothesize that global warmingis responsible for theincrease *** *** thenorthward *** Changjiang *** our results,monitoring of both species may be useful to evaluate the effects of climate change.

关键词： Zooplankton Lucifer intermedius Lucifer hanseni Global warming Changjiang estuary

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体育运动节目的制作(四)

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广播与电视技术 1998年第4期25卷 45-50页

作者：马增令马庆明广电部行管局

体育运动节目的制作（四）马增令，马庆明编译广电部行管局，邮电国旅４体育节目的实况转播体育节目实况转播要求摄制的同时，把比赛的情况从头至尾经电波发射出去，让观众在接收机荧光屏上同时看到比赛的全部过程。每一摄制组不一定要... 详细信息

体育运动节目的制作（四）马增令，马庆明编译广电部行管局，邮电国旅４体育节目的实况转播体育节目实况转播要求摄制的同时，把比赛的情况从头至尾经电波发射出去，让观众在接收机荧光屏上同时看到比赛的全部过程。每一摄制组不一定要进行录像，而将视频信号经电缆或微波...

关键词：体育运动节目节目制作电视节目

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