globalchange  > 全球变化的国际研究计划
DOI: 10.1002/lno.11155
WOS记录号: WOS:000485001400002
论文题名:
Phylogenetic signature of light and thermal stress for the endosymbiotic dinoflagellates of corals (Family Symbiodiniaceae)
作者: Lesser, Michael P.1,2
通讯作者: Lesser, Michael P.
刊名: LIMNOLOGY AND OCEANOGRAPHY
ISSN: 0024-3590
EISSN: 1939-5590
出版年: 2019
卷: 64, 期:5, 页码:1852-1863
语种: 英语
WOS关键词: OXIDATIVE STRESS ; ULTRAVIOLET-RADIATION ; SINGLET OXYGEN ; FUNCTIONAL DIVERSITY ; RADICAL PRODUCTION ; HYDROGEN-PEROXIDE ; NITRIC-OXIDE ; HEAT-STRESS ; PHOTOSYNTHESIS ; PHOTOINHIBITION
WOS学科分类: Limnology ; Oceanography
WOS研究方向: Marine & Freshwater Biology ; Oceanography
英文摘要:

Coral reefs around the world have been affected by a climate-change induced phenomenon known as "coral bleaching," which is caused by the interaction between high irradiance and elevated seawater temperatures, and involves the mass expulsion of Symbiodiniaceae from anemones, sponges, and corals. The primary drivers of this phenomenon are the inherent genetic variability in the Family Symbiodiniaceae, and the variability in the abiotic environment for variables such as irradiance and temperature. Recent experiments have either disregarded the important interactive role of irradiance or have suggested that photooxidative stress is not a prerequisite for coral bleaching because certain reactive oxygen species (ROS) can be produced in the dark. Here, fluorescent probes are used as proxies for the relative concentration of ROS in different genera of cultured Symbiodiniaceae under varying thermal and light conditions. The results show that taxon-specific patterns of the concentration of ROS are observed but that all genera tested produced significantly greater amounts of superoxide radicals and hydrogen peroxide, compared to singlet oxygen, when exposed to high light and thermal stress. These results are contextualized in relation to the primary drivers of ROS production and the photo-physiological basis for differences in ROS production that may then be correlated with symbiont driven coral bleaching.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/146175
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Univ New Hampshire, Dept Mol Cellular & Biomed Sci, Durham, NH 03824 USA
2.Univ New Hampshire, Sch Marine Sci & Ocean Engn, Durham, NH 03824 USA

Recommended Citation:
Lesser, Michael P.. Phylogenetic signature of light and thermal stress for the endosymbiotic dinoflagellates of corals (Family Symbiodiniaceae)[J]. LIMNOLOGY AND OCEANOGRAPHY,2019-01-01,64(5):1852-1863
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