不同温度和光强对条斑紫菜生长和光合生理的影响  

The effects of different temperatures and light intensities on the growth and photosynthetic physiology of Pyropia yezoensis

作　　者：马文婷 苏妮 高铭轩 李信书 陈国强 MA Wenting;SU Ni;GAO Mingxuan;LI Xinshu;CHEN Guoqiang(School of Marine Science and Fisheries,Jiangsu Ocean University,Lianyungang 222005,Jiangsu 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

出　　处：《黑龙江水产》2024年第5期515-520,共6页Northern Chinese Fisheries

基　　金：江苏省科技厅苏北科技专项(LYG-SZ201817);江苏省现代农业重点项目(BE2018335);江苏现代农业产业技术体系建设专项资金项目(JATS[2023] 478)。

摘　　要：条斑紫菜(Pyropia yezoensis)是一种具有重要经济价值的海藻。该研究旨在探究不同温度和光照强度条件对其生长和光合生理的影响。实验设置了低温(LT:10℃)和高温(HT:14℃)以及不同自然光光照强度(50%、25%、12.5%、6.25%、3.125%)的条件,以研究温度和光照强度对条斑紫菜生长和光合生理指标的影响。研究结果表明,在低温条件下,强光显著抑制了条斑紫菜的生长;而在较高温度下,低光则限制了其生长。高温和低光条件均显著抑制了条斑紫菜的最大量子产量(Fv/Fm)。较低的光强有利于光合色素叶绿素a(Chl a)、类胡萝卜素(Car)、藻红蛋白(PE)和藻蓝蛋白(PC)的积累,弱光条件以及较高温度条件下的中等光强适合Chl a和Car的积累,而较低的温度和较弱的光强则促进了PE和PC的合成。综上所述,温度和光照强度显著影响条斑紫菜的生长和光合生理指标,并对其各种光合色素的积累具有交互作用。The Pyropia yezoensis is a kind of seaweed with important economic value.This study aims to explore the effects of different temperature and light intensity conditions on its growth and photosynthetic physiology.The experiment set up environments of low temperature(LT:10°C)and high temperature(HT:14°C)along with different natural light intensities(50%,25%,12.5%,6.25%,3.125%)to investigate the effects of temperature and light intensity on the growth and photosynthetic physiological indicators of Pyropia yezoensis.The results show that under low temperature conditions,strong light significantly inhibited the growth of Pyropia yezoensis;whereas at higher temperatures,low light limited its growth.Both high temperature and low light conditions significantly suppressed the maximum quantum yield of Pyropia yezoensis(Fv/Fm).Lower light intensity favored the accumulation of photosynthetic pigments chlorophyll a(Chl a),carotenoid(Car),phycobiliproteins(PE),and phycocyanin(PC);weak light conditions and moderate light intensity under higher temperature conditions were suitable for the accumulation of Chl a and Car,while lower temperature and weaker light intensity promoted the synthesis of PE and PC.In conclusion,temperature and light intensity significantly affect the growth and photosynthetic physiological indicators of Pyropia yezoensis,and have interactive effects on the accumulation of various photosynthetic pigments.

关 键 词：条斑紫菜(Pyropia yezoensis) 温度 光照强度 生长 光合生理 

分 类 号：S968.4[农业科学—水产养殖]