SCSIO OpenIR  > 中科院海洋生物资源可持续利用重点实验室
High antioxidant capability interacts with respiration to mediate two Alexandrium species growth exploitation of photoperiods and light intensities
Hui, Wang2; Zhang, Bowen2; Song, Xingyu1; Jian, Xiaohui; Tang, Chengxi; Campbell, Douglas A.; Lin, Qiang1; Li, Gang1
2019
Source PublicationHARMFUL ALGAE
ISSN1568-9883
Volume82Pages:26
AbstractLight drives phytoplankton photosynthesis, so phytoplankton in their living habitats must exploit variable light levels and exposure durations, depending upon seasons, latitudes, depths and mixing events. Comparative growth, physiology and biochemical compositions were explored for the small Alexnadrium minutum ((similar to)40 mu m(3) biovolume) and large Alexandrium catenella ((similar to)9300 mu m(3) biovolume), globally wide spread coastal toxic red tide dinoflagellates, responding to a matrix of photoperiods (Light:Dark, 8:16, 16:8 and 24:0) and growth light ir-radiances. Smaller A. minutum grew faster under shorter photoperiods across growth light levels, while larger A. catenella grew fastest under longer photoperiods at the lowest applied light level. Photosystem II function responded largely to the instantaneous growth light level across photoperiod lengths, while the cell biovolume-based respiration, antioxidant capacity as well as cell composition responded more to photoperiod duration than to light level. These complex photophysiological responses resolved into linear correlations between growth rate versus cellular antioxidant activity and versus dark respiration, indicating that respiration energizes cellular antioxidant systems to benefit the growth of the cells. These results show the growth responses of Alexandrium species to light levels across photoperiods vary with species, and possibly with cell size. Together with previous results this puts a note of caution on meta-analytical extrapolations of physiological responses to light intensity derived from studies applying different photoperiods to different taxa, because different taxa show differential, even opposite growth responses to photoperiods and light intensities.
DepartmentLMB
KeywordCell size Dinoflagellate Growth Photoperiod Respiration Antioxidant activity RUBISCO Alexandrium
DOI10.1016/j.hal.2018.12.008
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17901
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Shantou Univ, Dept Biol, Coll Sci, Shantou 515063, Guangdong, Peoples R China
2.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou 510530, Guangdong, Peoples R China
3.Shantou Univ, Coll Sci, STU UNIVPM Joint Algal Res Ctr, Shantou 515063, Guangdong, Peoples R China
4.Campbell, Douglas A.] Mt Allison Univ, Dept Biol, Sackville, NB E4L 1G7, Canada
Recommended Citation
GB/T 7714
Hui, Wang,Zhang, Bowen,Song, Xingyu,et al. High antioxidant capability interacts with respiration to mediate two Alexandrium species growth exploitation of photoperiods and light intensities[J]. HARMFUL ALGAE,2019,82:26, 34.
APA Hui, Wang.,Zhang, Bowen.,Song, Xingyu.,Jian, Xiaohui.,Tang, Chengxi.,...&Li, Gang.(2019).High antioxidant capability interacts with respiration to mediate two Alexandrium species growth exploitation of photoperiods and light intensities.HARMFUL ALGAE,82,26.
MLA Hui, Wang,et al."High antioxidant capability interacts with respiration to mediate two Alexandrium species growth exploitation of photoperiods and light intensities".HARMFUL ALGAE 82(2019):26.
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