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Variation of photosynthetic performance, nutrient uptake, and elemental composition of different generations and different thallus parts of Saccharina japonica

文献类型： 外文期刊

作者： Wang, Yitao 1 ; Xu, Dong 2 ; Fan, Xiao 2 ; Zhang, Xiaowen 2 ; Ye, Naihao 2 ; Wang, Wenqi 1 ; Mao, Yuze 2 ; Mou, Shanli 3 ; C 1 ;

作者机构： 1.Qingdao Agr Univ, Coll Anim Sci & Technol, Qingdao, Peoples R China

2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Qingdao, Peoples R China

3.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Bioact Subst, Qingdao, Peoples R China

关键词： PSII photochemical efficiency;Nutrient uptake;Elemental composition;Saccharina japonica;Phaophyta

期刊名称：JOURNAL OF APPLIED PHYCOLOGY （ 影响因子：3.215； 五年影响因子：3.612 ）

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收录情况： SCI

摘要： In order to illustrate the physiological variation of different generations and different thallus parts of Saccharina japonica, physiological parameters such as maximum and effective PSII photochemical efficiency, nutrient uptake, and elemental composition were determined in the laboratory. Photosynthetic analysis in different generations indicated that, although gametophytes had higher pigment contents than the sporophyte, they had lower values of F (v)/F (m) and Delta F/F'(m). The highest Chl a/Chl c ratio was found in sporophyte generation (3.98 +/- 0.01) and in the basal part of fresh thallus (2.66 +/- 0.02). The sporophyte had significantly higher values of nitrate uptake but lower values of phosphorus uptake than the gametophytes. The contents of nitrogen and carbon as well as C/N in gametophytes were significantly higher than those in sporophytes. In addition, the basal part of the S. japonica thallus had the highest C content (22.31 +/- 1.50 %) but the lowest N content (2.02 +/- 0.16 %), as well as the highest value of C/N (11.02 +/- 0.34).

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