Hypoosmotic shock induces a state I transition of photosynthetic apparatus in Dunaliella salina

Xiande Liu; Yungang Shen

doi:10.1360/03wc0137

Hypoosmotic shock induces a state I transition of photosynthetic apparatus in Dunaliella salina

Xiande Liu
, Yungang Shen

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The effects of hypoosmotic shock on state transition in darkness in Dunaliella salina were studied. When the concentration of NaCl in culture medium was dropped from 1.5 to 0.5 mol/L abruptly, the photosynthetic rate of D. salina declined, but the respiratory rate and intracellular ATP content increased in the dark. The F_{PS II}/F_{PS I} ratio at 77 K of D. salina cells exposed to hypoosmotic shock was higher than that of control cells, indicating that more excitation energy was distributed to PS II in stressed D. salina cells upon illumination. A decrease in LHC II phosphorylation level was also observed when D. salina was exposed to hypoosmotic shock. Thus a state I transition of photosynthetic apparatus occurs when D. salina suffers hypoosmotic shock in darkness, which is supposed to be related to an enhancement of respiration and an increase in ATP content in stressed D. salina cells.

Original language	English (US)
Pages (from-to)	672-675
Number of pages	4
Journal	Chinese Science Bulletin
Volume	49
Issue number	7
DOIs	https://doi.org/10.1360/03wc0137
State	Published - 2004
Externally published	Yes

Keywords

Dunaliella salia
Hypoosmotic shock
Photosynthetic apparatus
State transition

ASJC Scopus subject areas

General

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10.1360/03wc0137

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@article{4dbeed581391446ba226c268bf2a5afa,

title = "Hypoosmotic shock induces a state I transition of photosynthetic apparatus in Dunaliella salina",

abstract = "The effects of hypoosmotic shock on state transition in darkness in Dunaliella salina were studied. When the concentration of NaCl in culture medium was dropped from 1.5 to 0.5 mol/L abruptly, the photosynthetic rate of D. salina declined, but the respiratory rate and intracellular ATP content increased in the dark. The FPS II/FPS I ratio at 77 K of D. salina cells exposed to hypoosmotic shock was higher than that of control cells, indicating that more excitation energy was distributed to PS II in stressed D. salina cells upon illumination. A decrease in LHC II phosphorylation level was also observed when D. salina was exposed to hypoosmotic shock. Thus a state I transition of photosynthetic apparatus occurs when D. salina suffers hypoosmotic shock in darkness, which is supposed to be related to an enhancement of respiration and an increase in ATP content in stressed D. salina cells.",

keywords = "Dunaliella salia, Hypoosmotic shock, Photosynthetic apparatus, State transition",

author = "Xiande Liu and Yungang Shen",

note = "Funding Information: Acknowledgements The authors would like to thank Prof. Wei Jiamian, Prof. Li Deyao, Prof. Wang Tianzuo, Prof. Mi Hualing, Dr. Deng Yong, and Dr. Zhang Haibo for their valuable help. This work was supported by the National Natural Science Foundation of China (Grant No. 30070064), and the State Key Basic Development Plan Program (Grant No. Gl998010100).",

year = "2004",

doi = "10.1360/03wc0137",

language = "English (US)",

volume = "49",

pages = "672--675",

journal = "Chinese Science Bulletin",

issn = "1001-6538",

publisher = "Science in China Press",

number = "7",

}

TY - JOUR

T1 - Hypoosmotic shock induces a state I transition of photosynthetic apparatus in Dunaliella salina

AU - Liu, Xiande

AU - Shen, Yungang

N1 - Funding Information: Acknowledgements The authors would like to thank Prof. Wei Jiamian, Prof. Li Deyao, Prof. Wang Tianzuo, Prof. Mi Hualing, Dr. Deng Yong, and Dr. Zhang Haibo for their valuable help. This work was supported by the National Natural Science Foundation of China (Grant No. 30070064), and the State Key Basic Development Plan Program (Grant No. Gl998010100).

PY - 2004

Y1 - 2004

N2 - The effects of hypoosmotic shock on state transition in darkness in Dunaliella salina were studied. When the concentration of NaCl in culture medium was dropped from 1.5 to 0.5 mol/L abruptly, the photosynthetic rate of D. salina declined, but the respiratory rate and intracellular ATP content increased in the dark. The FPS II/FPS I ratio at 77 K of D. salina cells exposed to hypoosmotic shock was higher than that of control cells, indicating that more excitation energy was distributed to PS II in stressed D. salina cells upon illumination. A decrease in LHC II phosphorylation level was also observed when D. salina was exposed to hypoosmotic shock. Thus a state I transition of photosynthetic apparatus occurs when D. salina suffers hypoosmotic shock in darkness, which is supposed to be related to an enhancement of respiration and an increase in ATP content in stressed D. salina cells.

AB - The effects of hypoosmotic shock on state transition in darkness in Dunaliella salina were studied. When the concentration of NaCl in culture medium was dropped from 1.5 to 0.5 mol/L abruptly, the photosynthetic rate of D. salina declined, but the respiratory rate and intracellular ATP content increased in the dark. The FPS II/FPS I ratio at 77 K of D. salina cells exposed to hypoosmotic shock was higher than that of control cells, indicating that more excitation energy was distributed to PS II in stressed D. salina cells upon illumination. A decrease in LHC II phosphorylation level was also observed when D. salina was exposed to hypoosmotic shock. Thus a state I transition of photosynthetic apparatus occurs when D. salina suffers hypoosmotic shock in darkness, which is supposed to be related to an enhancement of respiration and an increase in ATP content in stressed D. salina cells.

KW - Dunaliella salia

KW - Hypoosmotic shock

KW - Photosynthetic apparatus

KW - State transition

UR - https://www.scopus.com/pages/publications/3042522814

UR - https://www.scopus.com/pages/publications/3042522814#tab=citedBy

U2 - 10.1360/03wc0137

DO - 10.1360/03wc0137

M3 - Article

AN - SCOPUS:3042522814

SN - 1001-6538

VL - 49

SP - 672

EP - 675

JO - Chinese Science Bulletin

JF - Chinese Science Bulletin

IS - 7

ER -

Hypoosmotic shock induces a state I transition of photosynthetic apparatus in Dunaliella salina

Abstract

Keywords

ASJC Scopus subject areas

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