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Effects of temperature, irradiance and pCO(2) on the growth and nitrogen utilization of Prorocentrum donghaiense
Hu, Zhangxi1,2; Mulholland, Margaret R.3; Xu, Ning4; Duan, Shunshan4
2016
Source PublicationAQUATIC MICROBIAL ECOLOGY
Volume77Issue:3Pages:155-166
SubtypeArticle
AbstractEnvironmental factors such as temp erature, irradiance, and nitrogen (N) supply affect the growth of Prorocentrum donghaiense, but the interactive effects of these physical factors and the effects of atmospheric CO2 (pCO(2)) on growth and N uptake have not been examined. We compared growth kinetics of P. donghaiense grown on 4 different N substrates (nitrate [NO3-], ammonium [NH4+], urea, and glutamic acid [glu]) with respect to temperature, irradiance, and pCO(2). Temperature (15 to 30 degrees C) had a positive effect on growth (max. growth rates: 0.17 to 0.65 d(-1); optimal temperature: 25 to 30 degrees C); maximum specific growth rates (mu(max)) declined when cultures were grown at 30 degrees C. P. donghaiense grew well on all 4 N sources, under irradiances ranging from 10 to 180 mu mol quanta m(-2) s(-1). mu(max) (2.0 +/- 0.1 d(-1)) was observed in cultures growing with NH4+ as the sole N source in the highest irradiance treatment (180 mu mol quanta m(-2) s(-1)). These rates were significantly higher than those measured in cultures grown on NO3-, urea, and glu (all similar to 1.4 d(-1)). Half-saturation constants (K-s) ranged from 66.5 +/- 4.6 to 99.4 +/- 6.7 mu mol quanta m(-2) s(-1) for cultures grown with glu or NH4+, respectively, as the sole source of N. Both growth and N uptake rates were higher in cultures grown under elevated pCO(2). Our results suggest that P. donghaiense exhibits flexible adaptation for N utilization under broad environmental conditions (temperature, irradiance, pCO(2)), which may play an important role in the formation and duration of P. donghaiense blooms.
KeywordProrocentrum Donghaiense Temperature Irradiance Co2 Nitrogen Growth Rate Nitrogen Uptake
DOI10.3354/ame01793
Indexed BySCI
Language英语
WOS IDWOS:000387120300003
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/136197
Collection海洋生态与环境科学重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
3.Old Dominion Univ, Dept Ocean Earth & Atmospher Sci, 4600 Elkhorn Ave, Norfolk, VA 23507 USA
4.Jinan Univ, Res Ctr Hydrobiol, 601 W Huangpu Blvd, Guangzhou 510632, Guangdong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Hu, Zhangxi,Mulholland, Margaret R.,Xu, Ning,et al. Effects of temperature, irradiance and pCO(2) on the growth and nitrogen utilization of Prorocentrum donghaiense[J]. AQUATIC MICROBIAL ECOLOGY,2016,77(3):155-166.
APA Hu, Zhangxi,Mulholland, Margaret R.,Xu, Ning,&Duan, Shunshan.(2016).Effects of temperature, irradiance and pCO(2) on the growth and nitrogen utilization of Prorocentrum donghaiense.AQUATIC MICROBIAL ECOLOGY,77(3),155-166.
MLA Hu, Zhangxi,et al."Effects of temperature, irradiance and pCO(2) on the growth and nitrogen utilization of Prorocentrum donghaiense".AQUATIC MICROBIAL ECOLOGY 77.3(2016):155-166.
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