Effects of Nitrogen Enrichment on Growth, Photosynthesis Pigments and Chlorophyll Fluorescence Parameters of Ulva Lactuca

Yuying Huang ； Changpeng Ye ； Chaowen Zhang ； Bo Zhang ； Can Tang ； Lili Zheng ； Hong Liu ； Jiangang Zhao

《International Core Journal of Engineering》 8卷6期 (2022/06) Pp. 332-341

https://doi.org/10.6919/ICJE.202206_8(6).0047

摘要

Taking Ulva lactuca as the research object, the relative growth rate, photosynthetic pigment content, and chlorophyll fluorescence parameters of the photosynthetic organism with nitrogen enrichment were measured, to determine the function of nitrogen enrichment on the photosynthetic mechanism. The results showed that the fraction of OEC, ETo/RC, Fv/Fo, φPo, PIabs, φEo, ψo were significantly higher than those of control group (p＜0.05). And Wk, Mo, DIo/RC and φDo were lower than those of control group (p＜0.05), respectively. Nitrogen supplementation promoted the activities of donor side, recipient side and reaction center of Ulva lactuca on photosynthetic system II (PSII). In conclusion, nitrogen enrichment at 200μmol/L can effectively improve the growth rate and photosynthetic performance of Ulva lactuca, thus promoting its photochemical activity.

關鍵字

Ulva Lactuca ； Nitrogen Enrichment ； Growth ； Photochemical Activity

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