| Functional reactivation of photosystem II in lichen soil crusts after long-term desiccation | |
| Wu, Li1,2; Lan, Shubin1; Zhang, Delu3; Hu, Chunxiang1; Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China. | |
| 2013-08-01 | |
| Source Publication | PLANT AND SOIL
 |
| ISSN | 0032-079X |
| Volume | 369Issue:1-2Pages:177-186 |
| Abstract | As an important successional stage of biological soil crusts, lichen soil crusts (LSCs) are often in the dry and inactive state in desert environments, so it is vital for their survival and development in these areas to reactivate the photosynthetic systems during a rehydration event. In this study, the reactivation patterns of light-harvesting complexes (LHCs) and reaction centres of photosystem (PS) II in the long-term desiccated LSCs (approximately 10 months) were monitored using chlorophyll a fluorescence technique. For the long-term desiccated LSCs, PS II reaction centres could recover their activity gradually in the light after rehydration, whereas no obvious recovery occurred in the dark (0.1 < Fv/Fm < 0.2). After experiencing prior rehydration/desiccation (R/D) cycle(s) in the light, the PS II reaction centres could rapidly recover their activity following rehydration both in the light and dark. Even the most reactivation (76 % of the PSII centers) was independent on the synthesis of new proteins. In addition, compared with reaction centres, LHCs of PS II could recover their activity faster both in the light and dark, and prior R/D cycle(s) also accelerated the recovery of LHC II. It is concluded that prior R/D cycles strongly accelerated LSC recovery process of photosynthetic systems and removed the dependence on light in subsequent hydration events. This characteristic is essential for LSCs to survive and develop in desert environments because it facilitates more carbon fixation during transient rehydration.; As an important successional stage of biological soil crusts, lichen soil crusts (LSCs) are often in the dry and inactive state in desert environments, so it is vital for their survival and development in these areas to reactivate the photosynthetic systems during a rehydration event. |
| Subtype | Article |
| Keyword | Biological Soil Crusts Desert Rehydration/desiccation Cycle Photosynthetic Pigments Chlorophyll a Fluorescence |
| Department | [Wu, Li ; Lan, Shubin ; Hu, Chunxiang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China ; [Wu, Li] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China ; [Zhang, Delu] Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China |
| DOI | 10.1007/s11104-012-1563-2 |
| WOS Headings | Science & Technology ; Life Sciences & Biomedicine |
| Funding Organization | National Natural Science Foundation of China [30870470, 31170464] ; National Natural Science Foundation of China [30870470, 31170464] ; National Natural Science Foundation of China [30870470, 31170464] ; National Natural Science Foundation of China [30870470, 31170464] |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Agriculture ; Plant Sciences |
| WOS Subject | Agronomy ; Plant Sciences ; Soil Science |
| WOS ID | WOS:000321642200015 |
| WOS Keyword | THERMAL-ENERGY DISSIPATION ; CHLOROPHYLL FLUORESCENCE ; LOBARIA-PULMONARIA ; REACTION CENTERS ; WATER RELATIONS ; GREEN-ALGAE ; PHOTOSYNTHESIS ; DESERT ; TOLERANCE ; CYANOBACTERIA |
| Funding Organization | National Natural Science Foundation of China [30870470, 31170464] ; National Natural Science Foundation of China [30870470, 31170464] ; National Natural Science Foundation of China [30870470, 31170464] ; National Natural Science Foundation of China [30870470, 31170464] |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ihb.ac.cn/handle/342005/19630 |
| Collection | 藻类生物学及应用研究中心_期刊论文 |
| Corresponding Author | Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China. |
| Affiliation | 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China |
| Recommended Citation GB/T 7714 | Wu, Li,Lan, Shubin,Zhang, Delu,et al. Functional reactivation of photosystem II in lichen soil crusts after long-term desiccation[J]. PLANT AND SOIL,2013,369(1-2):177-186. |
| APA | Wu, Li,Lan, Shubin,Zhang, Delu,Hu, Chunxiang,&Hu, CX .(2013).Functional reactivation of photosystem II in lichen soil crusts after long-term desiccation.PLANT AND SOIL,369(1-2),177-186. |
| MLA | Wu, Li,et al."Functional reactivation of photosystem II in lichen soil crusts after long-term desiccation".PLANT AND SOIL 369.1-2(2013):177-186. |
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