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Rotifers release a lipid-soluble agent that inhibits photosynthetic electron transport inChlorellasp
Xu, Ran1,2; Zhang, Litao1,3; Liu, Jianguo1,3
2020-03-10
Source PublicationJOURNAL OF APPLIED PHYCOLOGY
ISSN0921-8971
Pages9
AbstractRotifer contamination, as a severe constraint in mass cultures, impedes industrial-scale cultivation of microalgae. Once contamination occurred, the rotifers released something that inhibited microalgal cell growth in addition to algal reduction due to predation. With the aim of further identifying the type and effects of the inhibitor released from rotifers,Chlorellasp. was cultured in fresh modified F/2 medium and in media containing various proportions of boiled rotifer culture-medium filtrate (RCF), as well as in media containing water-soluble or lipid-soluble fractions isolated from RCF. Then, the growth and photosynthesis ofChlorellasp. were measured. The rotifer inhibition ofChlorellagrowth could not be eliminated by boiling the RCF, indicating that the inhibitor was not likely a protein. The growth and photosynthesis ofChlorellasp. was not inhibited by the water-soluble RCF fraction, but they were significantly inhibited by the lipid-soluble RCF fraction, in a dose-dependent manner. Further, the lipid-soluble fraction decreased energy conservation and photosynthetic electron transport, which induced a severe decrease in PSII activity and a decrease in the net photosynthetic O(2)evolution rate. Based on these physiological responses ofChlorellacells, the lipid-soluble fraction rather than the protein or water-soluble fractions was determined to contain the responsible inhibitor, suggesting the direction of further studies.
KeywordChlorellasp Rotifer-derived growth inhibition Lipid-soluble inhibitor Photosynthetic inhibition mechanism
DOI10.1007/s10811-020-02065-9
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[U1706209] ; National Key Research and Development Program-China[2016YFB0601004] ; Shandong Provincial Natural Science Foundation, China[ZR2019BC057]
WOS Research AreaBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS SubjectBiotechnology & Applied Microbiology ; Marine & Freshwater Biology
WOS IDWOS:000562590800002
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/168295
Collection实验海洋生物学重点实验室
Corresponding AuthorLiu, Jianguo
Affiliation1.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Key Lab Expt Marine Biol, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 10049, Peoples R China
3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
First Author AffilicationCenter for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationCenter for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Xu, Ran,Zhang, Litao,Liu, Jianguo. Rotifers release a lipid-soluble agent that inhibits photosynthetic electron transport inChlorellasp[J]. JOURNAL OF APPLIED PHYCOLOGY,2020:9.
APA Xu, Ran,Zhang, Litao,&Liu, Jianguo.(2020).Rotifers release a lipid-soluble agent that inhibits photosynthetic electron transport inChlorellasp.JOURNAL OF APPLIED PHYCOLOGY,9.
MLA Xu, Ran,et al."Rotifers release a lipid-soluble agent that inhibits photosynthetic electron transport inChlorellasp".JOURNAL OF APPLIED PHYCOLOGY (2020):9.
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