Influence of acidification and eutrophication on physiological functions of Conticribra weissflogii and Prorocentrum donghaiense.
Eutrophication and acidification have been the most concerned environmental problems in coastal ecosystem. However, their combined effect on coastal ecosystem function was unknown. Both diatom (Conticribra weissflogii) and dinoflagellate (Prorocentrum donghaiense) are used as coastal algal model. Seven parameters were determined for physiological function assessment, including cell density, chlorophyll a (Chl a), protein, malonaldehyde (MDA), superoxide dismutase, carbonic anhydrase (CA), and nitrate reductase (NR). The influence of nitrate (N) and phosphate (P) on MDA and CA in C. weissflogii was significant, and that on Chl a and protein in P. donghaiense were also significant. However, the influence of acidification on physiological functions was not significant. The effect of acidification could be intensified by coastal eutrophication. More importantly, the coexist influence of acidification and eutrophication on CA, NR and protein in C. weissflogii and MDA in P. donghaiense was significant. Both NR activity and Chl a content in P. donghaiense were positively correlated to N and P concentration when pH were 7.9 and 7.8, respectively. With simultaneous worsening of acidification and eutrophication, the cell growth of P. Donghaiense was accelerated more obviously than C. weissflogii, i.e., dinoflagellate was more adaptable than diatom, thus algal species distribution and abundance could be changed.
Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China; College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China.
Feng-Ying
FY
Zheng
College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China.
Teng-Xiu
TX
Tu
College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China.
Feng-Jiao
FJ
Liu
Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China; College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China.
Xu-Guang
XG
Huang
Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, Minnan Normal University, Zhangzhou, 363000, China; College of Chemistry and Environment, Minnan Normal University, Zhangzhou 363000, China. Electronic address: lishunxing@mnnu.edu.cn.
Shun-Xing
SX
Li
D002256:Carbonic Anhydrases / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D000077194:Chlorophyll A; D017377:Diatoms / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D004141:Dinoflagellida / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D017753:Ecosystem; D005068:Eutrophication / Q000502:physiology*; D006863:Hydrogen-Ion Concentration; D008315:Malondialdehyde / Q000378:metabolism; D009566:Nitrates / Q000737:chemistry; D010710:Phosphates / Q000737:chemistry; D013482:Superoxide Dismutase / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000633:toxicity
D009566:Nitrates; D010710:Phosphates; D014874:Water Pollutants, Chemical; D002734:Chlorophyll; D008315:Malondialdehyde; D013482:Superoxide Dismutase; D002256:Carbonic Anhydrases; D000077194:Chlorophyll A
Acidification; Algal species; Eutrophication; Physiological functions; Phytoplankton