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Biphasic regulation of superoxide radical levels in Mn-depleted and photoactivated photosystem II
Song, Y. -G.1,2,3; Liu, B.4; Liu, Y. -P.2,3; Du, L. -B.1; Villamena, F. A.2,3; Liu, Y.1
2011-09-01
Source PublicationPHOTOSYNTHETICA
ISSN0300-3604
Volume49Issue:3Pages:353-360
AbstractIn the past decades, it has become clear that superoxide radical (O(2)(center dot-)) can be generated from photosystem II ( PSII) during photosynthesis. Depending on the extent of its accumulation, O(2)(center dot-) plays an important role in plant physiology and pathology. The photoinhibition/repair cycle is a typical process in PSII which is mainly responsible for the survival of plants under the photoinihibition condition. It is therefore of significant importance to determine O(2)(center dot-) production in this cycle, and then explore how O(2)(center dot-) is controlled by PSII within a normal physiological level. With this in mind, we herein investigate the variation of the O(2)(center dot-) levels in PSII under Mn-depleted and photoactivated conditions mimicking the photoinhibition/repair cycle in vitro. The effect of intrinsic SOD-like component on the O(2)(center dot-) levels was also studied. Results show that PSII has the ability to regulate the O(2)(center dot-) levels in these two processes by simultaneously modulating the O(2)(center dot-) generation activity and intrinsic SOD-like activity. This finding could shed new lights on the photoprotective property of PSII against O(2)(center dot-) and other reactive oxygen species.
KeywordBiphasic Regulation Cytochrome b(559) Mn-depletion Photoactivation Photosystem Ii Superoxide Radical
DOI10.1007/S11099-011-0044-9
Indexed BySCI
Language英语
WOS IDWOS:000298655900005
PublisherSPRINGER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73738
Collection中国科学院化学研究所
Corresponding AuthorLiu, Y.
Affiliation1.Chinese Acad Sci, State Key Lab Struct Chem Unstable & Stable Speci, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China
2.Ohio State Univ, Ctr Biomed EPR Spect & Imaging, Davis Heart & Lung Res Inst, Div Cardiovasc Med,Dept Internal Med, Columbus, OH 43210 USA
3.Ohio State Univ, Dept Pharmacol, Coll Med, Columbus, OH 43210 USA
4.Shantou Univ, Cardiovasc Res Ctr, Coll Med, Shantou 515041, Peoples R China
Recommended Citation
GB/T 7714
Song, Y. -G.,Liu, B.,Liu, Y. -P.,et al. Biphasic regulation of superoxide radical levels in Mn-depleted and photoactivated photosystem II[J]. PHOTOSYNTHETICA,2011,49(3):353-360.
APA Song, Y. -G.,Liu, B.,Liu, Y. -P.,Du, L. -B.,Villamena, F. A.,&Liu, Y..(2011).Biphasic regulation of superoxide radical levels in Mn-depleted and photoactivated photosystem II.PHOTOSYNTHETICA,49(3),353-360.
MLA Song, Y. -G.,et al."Biphasic regulation of superoxide radical levels in Mn-depleted and photoactivated photosystem II".PHOTOSYNTHETICA 49.3(2011):353-360.
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