Differences in the responses of photosystem I and photosystem II of three tree species Cleistanthus sumatranus, Celtis philippensis and Pistacia weinmannifolia exposed to a prolonged drought in a tropical limestone forest
Huang, Wei1,2; Fu, Pei-Li2,3; Jiang, Yan-Juan2,3; Zhang, Jiao-Lin2; Zhang, Shi-Bao1; Hu, Hong1; Cao, Kun-Fang2
2013-02-01
发表期刊TREE PHYSIOLOGY
ISSN0829-318X
卷号33期号:2页码:211-220
摘要Drought stress can induce closure of stomata, thus leading to photoinhibition. The effects of prolonged severe drought under natural growing conditions on photosystem I (PSI), photosystem II (PSII) and cyclic electron flow (CEF) in drought-tolerant tree species are unclear. In spring 2010, southwestern China confronted severe drought that lasted several months. Using three dominant evergreen species, Cleistanthus sumatranus (Miq.) Muell. Arg. (Euphorbiaceae), Celtis philippensis Bl. (Ulmaceae) and Pistacia weinmannifolia J. Poisson ex Franch. (Anacardiaceae) that are native to a tropical limestone forest, we investigated the influence of this stress on PSI and PSII activities as well as light energy distribution in the PSII and P700 redox state. By the end of the drought period, predawn leaf water potential (Psi(pd)) largely declined in each species, especially in C. sumatranus. Photosystem I activity strongly decreased in the three species, especially in C. sumatranus which showed a decrease of 65%. The maximum quantum yield of PSII after dark adaptation remained stable in P. weinmannifolia and C. philippensis but significantly decreased in C. sumatranus. Light response curves indicated that both linear electron flow and non-photochemical quenching were severely inhibited in C. sumatranus along with disappearance of CEF, resulting in deleterious excess light energy in PSII. We conclude that PSI is more sensitive than PSII to prolonged severe drought in these three drought-tolerant species, and CEF is essential for photoprotection in them.
关键词Cyclic Electron Flow Drought Stress Non-photochemical Quenching Photoinhibition Photosystem i Photosystem Ii
资助信息National Natural Science Foundation of China [31170315, 31000237, 31170399]
学科领域Forestry
收录类别SCI
语种英语
WOS研究方向Forestry
WOS类目Forestry
WOS记录号WOS:000315435600010
引用统计
被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/16517
专题植物化学与西部植物资源持续利用国家重点实验室
作者单位1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China
2.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Huang, Wei,Fu, Pei-Li,Jiang, Yan-Juan,et al. Differences in the responses of photosystem I and photosystem II of three tree species Cleistanthus sumatranus, Celtis philippensis and Pistacia weinmannifolia exposed to a prolonged drought in a tropical limestone forest[J]. TREE PHYSIOLOGY,2013,33(2):211-220.
APA Huang, Wei.,Fu, Pei-Li.,Jiang, Yan-Juan.,Zhang, Jiao-Lin.,Zhang, Shi-Bao.,...&Cao, Kun-Fang.(2013).Differences in the responses of photosystem I and photosystem II of three tree species Cleistanthus sumatranus, Celtis philippensis and Pistacia weinmannifolia exposed to a prolonged drought in a tropical limestone forest.TREE PHYSIOLOGY,33(2),211-220.
MLA Huang, Wei,et al."Differences in the responses of photosystem I and photosystem II of three tree species Cleistanthus sumatranus, Celtis philippensis and Pistacia weinmannifolia exposed to a prolonged drought in a tropical limestone forest".TREE PHYSIOLOGY 33.2(2013):211-220.
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