重金属锌对绿藻缘管浒苔光合生理特性的影响  

Effects of Heavy Metal Zn2+on Photosynthetic Physiological Characteristics of Ulva linza

作　　者：吴诗琦 陆周玥 胡思雨 徐军田 马静[1,2] WU Shiqi;LU Zhouyue;HU Siyu;XU Juntian;MA Jing(School of Marine Science and Fisheries,Jiangsu Ocean University,Lianyungang 222005,China;Jiangsu Key Laboratory of Marine Bioresources and Environment,Jiangsu Ocean University,Lianyungang 222005,China;Co-innovation Center of Jiangsu Marine Bio-industry Technology,Jiangsu Ocean University,Lianyungang 222005,China;Jiangsu Institute of Marine Resources Development,Lianyungang 222005,China)

机构地区：[1]江苏海洋大学海洋科学与水产学院,江苏连云港222005 [2]江苏海洋大学江苏省海洋生物资源与环境重点实验室,江苏连云港222005 [3]江苏海洋大学江苏省海洋生物产业技术协同创新中心,江苏连云港222005 [4]江苏省海洋资源开发研究院,江苏连云港222005

出　　处：《江苏海洋大学学报（自然科学版）》2024年第2期17-22,共6页Journal of Jiangsu Ocean University:Natural Science Edition

基　　金：江苏省自然资源开发专项基金(海洋科技创新)项目(JSZRHYKJ2020001,JSZRHYKJ202206);现代渔业江苏省产业研究体系(JATS[2022]522);江苏省高等教育大学生创新创业培养计划;中国博士后基金项目(2019M651431);江苏省高校优势学科发展计划。

摘　　要：以绿藻缘管浒苔(Ulva linza)为实验材料,分析不同浓度的锌离子(Zn^(2+))对缘管浒苔光合生理特性的影响。随Zn^(2+)浓度升高,缘管浒苔的相对生长速率显著降低。与对照组相比,相对生长速率分别降低了37.8%,42.1%,76.8%和88.4%;藻体的呼吸作用速率和净光合作用速率随之降低,当Zn^(2+)浓度为200μmol/L时,呼吸作用速率和净光合作用速率与对照组相比分别降低了68.1%和93.0%;藻体最大量子产量也不断降低,最低可至0.3。同时发现,50μmol/L Zn^(2+)处理时可促进藻体Chl a和Chl b的合成。结果表明,缘管浒苔对低浓度Zn^(2+)具有一定的生理抗性,但高浓度的Zn^(2+)会抑制其光合生理特性。Ulva linza,a species of green tides,was selected as the experimental material,the effects of different concentrations of Zn^(2+)on the photosynthetic and physiological characteristics of U.Linza were analyzed.The results showed that the relative growth rate of U.linza decreased significantly with the increase of Zn^(2+)concentration.Compared with the control group,the relative growth rates decreased by 37.8%,42.1%,76.8%and 88.4%,respectively.The respiration rate and net photosynthetic rate of U.linza also decreased.When the concentration of Zn^(2+)was 200μmol/L,the respiratory rate and net photosynthesis rate decreased by 68.1%and 93.0%respectively compared to the control group.The yield of U.linza also decreased,with the lowest value of 0.3.Meanwhile,it was found that 50μmol/L Zn^(2+)treatment could promote the synthesis of Chl a and Chl b in algae.The results showed that U.linza had physiological resistance to low concentration of Zn^(2+),but high concentration of Zn^(2+)would inhibi its photosynthetic and physiological characteristics.

关 键 词：光合特性 生长速率 缘管浒苔 Zn^(2+) 

分 类 号：X55[环境科学与工程—环境工程]