Light absorption and growth response of Dunaliella under different light qualities

doi:10.1007/s10811-020-02057-9

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	Light absorption and growth response of Dunaliella under different light qualities
	Li, Yongfu 1,2,3; Li, Ling 1,2; Liu, Jianguo 1,2; Qin, Ruiyang1,2,4
	2020-03-03
发表期刊	JOURNAL OF APPLIED PHYCOLOGY
ISSN	0921-8971
页码	12
通讯作者	Liu, Jianguo([email protected])
摘要	Dunaliella sp. (formerly D. salina MACC/C43) was batch-cultured under blue (BL), red (RL), or white light (WL) provided by light-emitting diodes (LED) and white light provided by fluorescent lamps (WF), respectively, to assess growth characteristic. Growth under blue light coupled with red light (BL + RL) was also measured and compared with that under BL, WL, and RL, respectively, in a laboratory-scale photobioreactor. Algae under monochromatic blue light had the highest specific growth rate (mu) with a value of 0.51 day(-1), followed by WF (0.49 day(-1)), WL (0.47 day(-1)), and RL (0.44 day(-1)). Red light significantly enhanced Chl a and carotenoid contents, with values of 20.1 and 9.6 pg cell(-1), respectively. BL + RL increased the mu (0.20 day(-1)) compared to those rates under pure BL or RL ranging from 0.17 to 0.18 day(-1), in batch culture for 14 days using a photobioreactor with 3.2 L working volume. Cells absorb more photons for photosynthesis in the blue band. Mean extinction coefficient calculated based on the modified Lambert-Bill law at the blue light region (430-480 nm) was 0.885 cm(-1), which is 22, 11, and 15% higher than that of the red light region (630-700 nm), green light region (500-560 nm), and photosynthetically active radiation region (400-700 nm), respectively. Blue light also improved the initial slope and the maximum O-2 production rate in a photosynthesis-irradiance curve, whereas it lowered the compensation irradiance and dark respiration rate. The photochemistry of photosystem II also displayed its optimal performance under BL. LEDs are a suitable light source for Dunaliella sp. growth, and BL + RL promotes rapid division of algal cells.
关键词	Dunaliella Light quality Blue light Red light Photosynthesis Growth
DOI	10.1007/s10811-020-02057-9
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U1706209]; Pilot National Laboratory for Marine Science and Technology (Qingdao)[MS2019NO01]; Shandong Provincial Natural Science Foundation, China[ZR2017QC008]
WOS研究方向	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS类目	Biotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS记录号	WOS:000518050100001
出版者	SPRINGER
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/165560
专题	实验海洋生物学重点实验室
通讯作者	Liu, Jianguo
作者单位	1.Chinese Acad Sci, Inst Oceanol, Ctr Ocean Mega Sci, CAS Key Lab Expt Marine Biol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Nantong Res & Dev Ctr Marine Sci & Technol, Inst Oceanol, Nantong 226019, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Li, Yongfu,Li, Ling,Liu, Jianguo,et al. Light absorption and growth response of Dunaliella under different light qualities[J]. JOURNAL OF APPLIED PHYCOLOGY,2020:12.
APA	Li, Yongfu,Li, Ling,Liu, Jianguo,&Qin, Ruiyang.(2020).Light absorption and growth response of Dunaliella under different light qualities.JOURNAL OF APPLIED PHYCOLOGY,12.
MLA	Li, Yongfu,et al."Light absorption and growth response of Dunaliella under different light qualities".JOURNAL OF APPLIED PHYCOLOGY (2020):12.

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