Spring Ephemerals Adapt to Extremely High Light Conditions via an Unusual Stabilization of Photosystem II

doi:10.3389/fpls.2075.07789

IB-CAS > 中科院光生物学重点实验室

	Spring Ephemerals Adapt to Extremely High Light Conditions via an Unusual Stabilization of Photosystem II
	Tu, Wenfeng ; Li, Yang ; Liu, Wu ; Wu, Lishuan ; Xie, Xiaoyan ; Zhang, Yuanming 1; Wilhelm, Christian 2; Yang, Chunhong
	2016
发表期刊	FRONTIERS IN PLANT SCIENCE
ISSN	1664-462X
卷号	6
摘要	Ephemerals, widely distributed in the Gobi desert, have developed significant characteristics to sustain high photosynthetic efficiency under high light (HL) conditions. Since the light reaction is the basis for photosynthetic conversion of solar energy to chemical energy, the photosynthetic performances in thylakoid membrane of the spring ephemerals in response to HL were studied. Three plant species, namely two C3 spring ephemeral species of Cruciferae: Arabidopsis pumila (4. pumila) and Sisymbrium altissimum (S, altissimum), and the model plant Arabidopsis thaliana (A, thaliana) were chosen for the study. The ephemeral A. porn/la, which is genetically close to A. thallana and ecologically in the same habitat as S. altissimum, was used to avoid complications arising from the superficial differences resulted from comparing plants from two extremely contrasting ecological groups. The findings manifested that the ephemerals showed significantly enhanced activities of photosystem (PS) II under HL conditions, while the activities of PSII in A. thaliana were markedly decreased under the same conditions. Detailed analyses of the electron transport processes revealed that the increased plastoquinone pool oxidization, together with the enhanced PSI activities, ensured a lowered excitation pressure to PSII of both ephemerals, and thus facilitated the photosynthetic control to avoid photodamage to PSII. The analysis of the reaction centers of the PSs, both in terms of D-1 protein turnover kinetics and the long-term adaptation, revealed that the unusually stable PSs structure provided the basis for the ephemerals to carry out high photosynthetic performances. It is proposed that the characteristic photosynthetic performances of ephemerals were resulted from effects of the long-term adaptation to the harsh environments.
关键词	D1 protein turnover electron transport light stress photoinhibition photosystem activity spring ephemeral
学科领域	Plant Sciences
DOI	10.3389/fpls.2075.07789
收录类别	SCI
语种	英语
WOS关键词	CYCLIC ELECTRON-TRANSPORT ; DESERT WINTER ANNUALS ; CHLOROPHYLL-FLUORESCENCE ; ENERGY-DISSIPATION ; QUANTUM EFFICIENCY ; GENE-EXPRESSION ; C-3 PLANTS ; PHOTOSYNTHESIS ; PHOTOINHIBITION ; ACCLIMATION
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000367655900001
出版者	FRONTIERS MEDIA SA
文献子类	Article
出版地	LAUSANNE
资助机构	National Basic Research Program of ChinaNational Basic Research Program of China [2011CBA00904] ; Chinese Academy of SciencesChinese Academy of Sciences [KSZD-EW-Z-018, KGZD-EW-T05] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31570236, 31370275, 31200186]
作者邮箱	yangch@ibcas.ac.cn
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25327
专题	中科院光生物学重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Photobiol, Inst Bot, Beijing, Peoples R China 2.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource, Urumqi, Peoples R China 3.Univ Leipzig, Inst Biol, Dept Plant Physiol, D-04109 Leipzig, Germany
推荐引用方式 GB/T 7714	Tu, Wenfeng,Li, Yang,Liu, Wu,et al. Spring Ephemerals Adapt to Extremely High Light Conditions via an Unusual Stabilization of Photosystem II[J]. FRONTIERS IN PLANT SCIENCE,2016,6.
APA	Tu, Wenfeng.,Li, Yang.,Liu, Wu.,Wu, Lishuan.,Xie, Xiaoyan.,...&Yang, Chunhong.(2016).Spring Ephemerals Adapt to Extremely High Light Conditions via an Unusual Stabilization of Photosystem II.FRONTIERS IN PLANT SCIENCE,6.
MLA	Tu, Wenfeng,et al."Spring Ephemerals Adapt to Extremely High Light Conditions via an Unusual Stabilization of Photosystem II".FRONTIERS IN PLANT SCIENCE 6(2016).

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