北京师范大学学报（自然科学版）2018，Vol.54Issue(1)：25-31,7.DOI:10.16360/j.cnki.jbnuns.2018.01.004
黄河口日本鳗草(Zostera japonica)在环境胁迫下的光合响应研究
Photosynthetic response of Zostera japonica during environmental stress in the Yellow River Estuary
摘要
Abstract
Seagrass in the Yellow River Estuary has light limitation problems caused by water turbidity and Cu pollution. Effect of different combinations of light limitation (water turbidity and heavy metal contamination)on Zosterajaponica fluorescence properties was therefore investigated here by field monitoring and laboratory experiments, Turbidity stress and coupled stress of turbidity and low heavy metals Cu concentration was found to reduce chlorophyll content of Zostera japonica blade and inhibit photosynthetic pigment synthesis.Ratio of chlorophyll a/b under both scenarios was higher than under coupled stress of turbidity and high Cu concentration,showing the content of light harvesting complexes is lower in the former. Under environmental stress,qP value decreased,energy for electron transfer was reduced,reducing the light use efficiency.In short,Zostera japonica had stronger compatibility with turbidity stress and was not sensitive to different turbidity gradient stress.However,it was affected by duration of turbidity stress and stress scenarios.The effect of Cu on Zosterajaponica photosynthesis was greater than water suspended particles.关键词
黄河口/日本鳗草/浊度/重金属Cu/叶绿素荧光响应Key words
Yellow River Estuary/Zostera japonica/turbidity/heavy metal Cu/chlorophyll fluorescence分类
生物科学引用本文复制引用
丰玉,蒋湘丽,林海英,齐曼,路峰,孙涛..黄河口日本鳗草(Zostera japonica)在环境胁迫下的光合响应研究[J].北京师范大学学报（自然科学版）,2018,54(1):25-31,7.基金项目
国家重点基础研究发展计划(973 计划)资助项目(2013CB430402) （973 计划）
