收藏本站
收藏 | 论文排版

Different Responses of Photosynthesis and Flow Cytometric Signals to Iron Limitation and Nitrogen Source in Coastal and Oceanic Synechococcus Strains(Cyanophyceae)

【摘要】:正Iron plays an important role in marine primary productivity and Synechococcus species as major contributors to the total photosynthetic biomass in the world' s oceans might be limited by iron supply.The present study aimed to compare the photosynthesis and flow cytometric signals of four Synechococcus strains grown under different iron concentrations with either nitrate or ammonium as the sole nitrogen source.Two oceanic strains were much more sensitive to iron limitation than two coastal strains.The inhibition of iron limitation on the growth,maximal PSII photochemical yield,maximal rate of relative electron transport and photochemical quenching of the two oceanic strains was higher than for their coastal counterparts.Under iron limitation condition,the connectivity factor between individual photosynthetic units(p) increased for the two coastal strains while decreased for the two oceanic strains. Furthermore,iron limitation accelerated the Qa re-oxidation of the two oceanic strains and the PQ pool re-oxidation of the two coastal strains.Under iron limitation condition,the cell size of the two coastal strains and intracellular pigment concentrations of the two oceanic strains decreased while the side light scatter/front light scatter(SS/FS) ratio of the two coastal strains increased.In contrast to iron limitation,nitrogen source only marginally affected the photosynthesis of the four Synechococcus strains.Ammonium enhanced the growth of the two coastal strains under iron-replete condition.For the two oceanic strains,ammonium increased their cell size and decreased their SS/FS ratio and intracellular pigment concentrations under iron-deplete and iron-replete conditions.

知网文化
【相似文献】
中国重要会议论文全文数据库 前10条
1 ;Graphene and/or Carbon Nitride Based Nanostructures and Nanocomposites for Catalysis and Artificial Photosynthesis[A];11th Conference on Solid State Chemistry and Inorganic Synthesis Joint with 2th Dalton Transactions International Symposium Abstract Book[C];2011年
2 Golam Jalal Ahammed;;Brassinosteroid Ameliorates Phenanthrene Stress,Enhancing Photosynthesis,Antioxidant and Detoxification Systems in Tomato Plant[A];Abstract Book of 2nd International Symposium on Integrative Plant Biology[C];2011年
3 ;Salinity effects on plant growth,photosynthesis,and ion content of covered and naked oat[A];Proceedings of the XXI International Grassland Congress and the VIII International Rangeland Congress(volumeⅡ)[C];2008年
4 ;Net photosynthesis rate and transpiration rate of Algonquin in different growth years[A];Proceedings of the XXI International Grassland Congress and the VIII International Rangeland Congress(volumeⅡ)[C];2008年
5 ;Net photosynthesis rate and transpiration rate of Algonquin with different growth years[A];Proceedings of the XXI International Grassland Congress and the VIII International Rangeland Congress(volumeⅡ)[C];2008年
6 ;Photosynthesis and transpiration of Chicory with different irrigation treatments in Beijing[A];Proceedings of the XXI International Grassland Congress and the VIII International Rangeland Congress(volumeⅠ)[C];2008年
7 ;A mechanistic model for photosynthesis based on the light energy absorption of light-harvesting chlorophyll in photosystem[A];第十六届全国原子与分子物理学术会议论文摘要集[C];2011年
8 ;Photosynthesis and productivity of new lines and released cultivars of Whipgrass in a southwest China environment[A];Proceedings of the XXI International Grassland Congress and the VIII International Rangeland Congress(volumeⅡ)[C];2008年
9 ;Effects of different soil moisture and nutrient regimes on photosynthesis and protective enzyme of oil palm seedling[A];2011全国植物生物学研讨会论文集[C];2011年
10 ;Comparative Analysis of Photosynthesis of Three Stipa Species Based on A Photosynthesis Model[A];Proceedings of the 2011 Chinese Control and Decision Conference(CCDC)[C];2011年
中国博士学位论文全文数据库 前5条
1 王美玲;番茄景天庚酮糖-1,7-二磷酸酯酶基因的克隆及遗传转化[D];山东农业大学;2011年
2 刘俊稚;几种典型植物对大气CO_2浓度升高的生理和病理响应研究[D];浙江大学;2010年
3 KHURRAM ZIAF;番茄潘那利中两个ERD15基因的功能鉴定[D];华中农业大学;2011年
4 郑元;刺槐光合生理特征与固碳能力研究[D];西北农林科技大学;2010年
5 舒烈波;水稻叶片响应干旱和渗透胁迫的蛋白质组学研究[D];华中农业大学;2010年
中国硕士学位论文全文数据库 前10条
1 Abdul Hakeem;[D];西南大学;2010年
2 郎莹;土壤水分对3个树种光合作用光响应过程的影响[D];山东农业大学;2011年
3 吕中贤;NDH-CET在缓解蓝藻PSII光抑制中的作用机制研究[D];上海师范大学;2011年
4 郑建树;极端温度对佛手光合生理,抗氧化酶系及ROS的影响[D];浙江师范大学;2011年
5 周敏;铈元素对缺镁营养胁迫下玉米幼苗光合作用的影响[D];苏州大学;2011年
6 许慧男;树枝与叶片绿色组织C_4酶相关光合特性差异[D];东北林业大学;2010年
7 王晓薇;转甘蔗pepc基因籼稻及其与光合作用相关的生理特性分析[D];福建农林大学;2011年
8 张晓娟;坛紫菜PEPCK及PEPC基因的克隆与各生活史阶段表达分析[D];中国科学院研究生院(海洋研究所);2010年
9 王玉洁;增强UV-B辐射对不同温度下小麦幼苗生长和光合作用的影响[D];陕西师范大学;2010年
10 宋丽娜;营养盐浓度对海洋小球藻(Chlorella sp.)叶绿素荧光及生长的影响[D];华东师范大学;2010年
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978