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Light absorption and growth response of Dunaliella under different light qualities
Li, Yongfu1,2,3; Li, Ling1,2; Liu, Jianguo1,2; Qin, Ruiyang1,2,4
2020-03-03
Source PublicationJOURNAL OF APPLIED PHYCOLOGY
ISSN0921-8971
Pages12
Corresponding AuthorLiu, Jianguo(jgliu@qdio.ac.cn)
AbstractDunaliella 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.
KeywordDunaliella Light quality Blue light Red light Photosynthesis Growth
DOI10.1007/s10811-020-02057-9
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1706209] ; Pilot National Laboratory for Marine Science and Technology (Qingdao)[MS2019NO01] ; Shandong Provincial Natural Science Foundation, China[ZR2017QC008]
WOS Research AreaBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS SubjectBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS IDWOS:000518050100001
PublisherSPRINGER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/165560
Collection实验海洋生物学重点实验室
Corresponding AuthorLiu, Jianguo
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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