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DOI	10.1007/s11120-020-00809-9
	Juggling Lightning: How Chlorella ohadii handles extreme energy inputs without damage
	Kedem, Isaac; Milrad, Yuval; Kaplan, Aaron; Yacoby, Iftach
通讯作者	Kaplan, A (corresponding author), Hebrew Univ Jerusalem, Dept Plant & Environm Sci, Edmond J Safra Campus, IL-9190401 Jerusalem, Israel.
来源期刊	PHOTOSYNTHESIS RESEARCH
ISSN	0166-8595
EISSN	1573-5079
出版年	2021
卷号	147 期号:3 页码:329-344
英文摘要	The green alga Chlorella ohadii was isolated from a desert biological soil crust, one of the harshest environments on Earth. When grown under optimal laboratory settings it shows the fastest growth rate ever reported for a photosynthetic eukaryote and a complete resistance to photodamage even under unnaturally high light intensities. Here we examined the energy distribution along the photosynthetic pathway under four light and carbon regimes. This was performed using various methodologies such as membrane inlet mass spectrometer with stable O-2 isotopes, variable fluorescence, electrochromic shift and fluorescence assessment of NADPH level, as well as the use of specific inhibitors. We show that the preceding illumination and CO2 level during growth strongly affect the energy dissipation strategies employed by the cell. For example, plastid terminal oxidase (PTOX) plays an important role in energy dissipation, particularly in high light- and low-CO2-grown cells. Of particular note is the reliance on PSII cyclic electron flow as an effective and flexible dissipation mechanism in all conditions tested. The energy management observed here may be unique to C. ohadii, as it is the only known organism to cope with such conditions. However, the strategies demonstrated may provide an insight into the processes necessary for photosynthesis under high-light conditions.
英文关键词	Energy dissipation PTOX Fluorescence Oxygen evolution High illumination BSC
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000604214700003
WOS关键词	CYCLIC ELECTRON FLOW ; CO2 CONCENTRATING MECHANISMS ; SINGLET OXYGEN PRODUCTION ; PHOTOSYSTEM-II ; CHLAMYDOMONAS-REINHARDTII ; CHLOROPHYLL FLUORESCENCE ; FLAVODIIRON PROTEIN ; INORGANIC CARBON ; PHOTOPROTECTION ; PHOTOSYNTHESIS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351306
作者单位	[Kedem, Isaac; Kaplan, Aaron] Hebrew Univ Jerusalem, Dept Plant & Environm Sci, Edmond J Safra Campus, IL-9190401 Jerusalem, Israel; [Milrad, Yuval; Yacoby, Iftach] Tel Aviv Univ, Sch Plant Sci & Food Secur, George S Wise Fac Life Sci, Tel Aviv, Israel
推荐引用方式 GB/T 7714	Kedem, Isaac,Milrad, Yuval,Kaplan, Aaron,et al. Juggling Lightning: How Chlorella ohadii handles extreme energy inputs without damage[J]. Hebrew University of Jerusalem,2021,147(3):329-344.
APA	Kedem, Isaac,Milrad, Yuval,Kaplan, Aaron,&Yacoby, Iftach.(2021).Juggling Lightning: How Chlorella ohadii handles extreme energy inputs without damage.PHOTOSYNTHESIS RESEARCH,147(3),329-344.
MLA	Kedem, Isaac,et al."Juggling Lightning: How Chlorella ohadii handles extreme energy inputs without damage".PHOTOSYNTHESIS RESEARCH 147.3(2021):329-344.