渔业科学进展2024，Vol.45Issue(2)：96-104,9.DOI:10.19663/j.issn2095-9869.20231009001
不同氮营养盐对赫氏颗石藻和三角褐指藻中DMSP含量的影响
Effect of Different Nitrogen Nutrients on DMSP Content in Emiliania huxleyi and Phaeodactylum tricornutum
摘要
Abstract
Dimethylsulfoniopropionate(DMSP)is one of the most important organic sulfur compounds on Earth,and its significance in global sulfur cycling and climate regulation cannot be overlooked,as it plays an indispensable role in these processes.Phytoplankton are the major producers of DMSP in the marine environment,and nitrogen nutrients are key factors influencing the production of DMSP in phytoplankton.This study focused on two algal species,Emiliania huxleyi(a high DMSP producer)and Phaeodactylum tricornutum(a medium DMSP producer),and conducted indoor culture experiments to compare and analyze the content of particulate DMSP(DMSPp)in the algal culture media under different nitrogen nutrient concentrations and types.The study investigated the relationships between overall DMSPp content,algal density,and DMSPp content per individual algal cell.The results indicated that different nitrogen nutrient concentrations and types had a minimal impact on the content of DMSPp per individual cell in E.huxleyi(P＞0.05),suggesting that the DMSPp concentration in the culture media was mostly influenced by algal cell density.Conversely,different nitrogen nutrient concentrations and types had a significant impact on the content of DMSPp per individual cell in P.tricornutum(P＜0.05),indicating that the DMSPp concentration in the culture media was mainly influenced by the content of DMSPp per individual algal cell.For instance,in the case of P.tricornutum,the average DMSPp content per individual cell in the low NO3-concentration(0 pmol/L)culture group was 11 times greater than that in the high NO3-concentration(1 764 pmol/L)culture group.Furthermore,under different nitrogen nutrient types,the average total DMSPp concentration in NaNO3 culture media was three and four times higher than that in the NH4C1 and CH4N2O culture groups,respectively.These differences may be attributed to variations in the physiological effects of DMSP on different algal species.关键词
二甲基巯基丙酸内盐(DMSP)/赫氏颗石藻/三角褐指藻/氮营养盐Key words
Dimethylsulfoniopropionate/Emiliania huxleyi/Phaeodactylum tricornutum/Nitrogen nutrient分类
海洋科学引用本文复制引用
李凌霄,孙婧,宋若晗,崔正国,曲克明,王庆奎,周明莹,崔鸿武,胡清静..不同氮营养盐对赫氏颗石藻和三角褐指藻中DMSP含量的影响[J].渔业科学进展,2024,45(2):96-104,9.基金项目
国家自然科学基金青年基金(41606097)、山东省自然科学基金(ZR2022MD055)和中国水产科学研究院黄海水产研究所基本科研业务费(20603022020006 （41606097）
2020TD12)共同资助. （）
