IHB OpenIR  > 藻类生物学及应用研究中心  > 期刊论文
Recovery of chlorophyll fluorescence and CO2 exchange in lichen soil crusts after rehydration
Wu, Li1; Lan, Shubin1; Zhang, Delu2; Hu, Chunxiang1; Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
2013-03-01
Source PublicationEUROPEAN JOURNAL OF SOIL BIOLOGY
ISSN1164-5563
Volume55Pages:77-82
AbstractLichen soil crusts (LSCs) are an important stage during the development of biological soil crusts (BSCs). The photosynthetic characteristics of this stage are determined by both of the symbiotic and free-living cyanobacteria and algae in the crusts. In this study, the recovery rate, extent, pattern of chlorophyll fluorescence and CO2 exchange in LSCs were detected after rehydration under different water contents (5%, 20% and 40%). The results showed that original fluorescence (Fo) of each group increased dramatically after rehydration and then reached a plateau to steady state; however both maximum quantum efficiency of PS II photochemistry (Fv/Fm) and the ratio of variable fluorescence at different recovery time to the maximal value during the recovery period (Fv/Fv(max)) showed a similar and corresponding "three steps" recovery pattern. At the end of experiment, Fv/Fm of 20% water content group recovered to the highest level (0.45), although no obvious difference in the Fv/Fm was found among the three water content groups within the first 4 h. Additionally, after the rehydration CO2 release from LSCs (under the light) gradually decreased, and the organic carbon accumulation first occurred in 40% water content group, in which a higher CO2 assimilation rate was also observed. The obvious inconsistency between chlorophyll fluorescence detection and CO2 exchange analysis is considered to be the result of the special structure and photosynthetic characteristics of LSCs. (C) 2012 Elsevier Masson SAS. All rights reserved.; Lichen soil crusts (LSCs) are an important stage during the development of biological soil crusts (BSCs). The photosynthetic characteristics of this stage are determined by both of the symbiotic and free-living cyanobacteria and algae in the crusts. In this study, the recovery rate, extent, pattern of chlorophyll fluorescence and CO2 exchange in LSCs were detected after rehydration under different water contents (5%, 20% and 40%). The results showed that original fluorescence (Fo) of each group increased dramatically after rehydration and then reached a plateau to steady state; however both maximum quantum efficiency of PS II photochemistry (Fv/Fm) and the ratio of variable fluorescence at different recovery time to the maximal value during the recovery period (Fv/Fv(max)) showed a similar and corresponding "three steps" recovery pattern. At the end of experiment, Fv/Fm of 20% water content group recovered to the highest level (0.45), although no obvious difference in the Fv/Fm was found among the three water content groups within the first 4 h. Additionally, after the rehydration CO2 release from LSCs (under the light) gradually decreased, and the organic carbon accumulation first occurred in 40% water content group, in which a higher CO2 assimilation rate was also observed. The obvious inconsistency between chlorophyll fluorescence detection and CO2 exchange analysis is considered to be the result of the special structure and photosynthetic characteristics of LSCs. (C) 2012 Elsevier Masson SAS. All rights reserved.
SubtypeArticle
KeywordLichen Soil Crusts Chlorophyll Fluorescence Photosynthetic Activity Co2 Exchange Rate
Department[Wu, Li ; Lan, Shubin ; Hu, Chunxiang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China ; [Zhang, Delu] Wuhan Univ Technol, Dept Biol Sci & Biotechnol, Wuhan 430070, Peoples R China
DOI10.1016/j.ejsobi.2012.12.006
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational 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 BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEcology ; Soil Science
WOS IDWOS:000316506800012
WOS KeywordNAMIB FOG DESERT ; COLORADO PLATEAU ; WATER RELATIONS ; CYANOBACTERIAL CRUSTS ; SUCCESSIONAL STAGES ; ENERGY-DISSIPATION ; EPIPHYTIC LICHENS ; NITROGEN-FIXATION ; ALGAL CRUSTS ; CARBON
Funding OrganizationNational 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
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/19354
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorHu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.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. Recovery of chlorophyll fluorescence and CO2 exchange in lichen soil crusts after rehydration[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2013,55:77-82.
APA Wu, Li,Lan, Shubin,Zhang, Delu,Hu, Chunxiang,&Hu, CX .(2013).Recovery of chlorophyll fluorescence and CO2 exchange in lichen soil crusts after rehydration.EUROPEAN JOURNAL OF SOIL BIOLOGY,55,77-82.
MLA Wu, Li,et al."Recovery of chlorophyll fluorescence and CO2 exchange in lichen soil crusts after rehydration".EUROPEAN JOURNAL OF SOIL BIOLOGY 55(2013):77-82.
Files in This Item:
File Name/Size DocType Version Access License
Recovery of chloroph(374KB) 开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, Li]'s Articles
[Lan, Shubin]'s Articles
[Zhang, Delu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, Li]'s Articles
[Lan, Shubin]'s Articles
[Zhang, Delu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, Li]'s Articles
[Lan, Shubin]'s Articles
[Zhang, Delu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Recovery of chlorophyll fluorescence and CO2 exchange in lichen soil crusts after rehydration.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.