IHB OpenIR  > 藻类生物学及应用研究中心  > 期刊论文
Longitudinal Photosynthetic Gradient in Crust Lichens' Thalli
Wu, Li1,2; Zhang, Gaoke1; Lan, Shubin2; Zhang, Delu3; Hu, Chunxiang2; Hu, CX (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China.
2014-05-01
Source PublicationMICROBIAL ECOLOGY
ISSN0095-3628
Volume67Issue:4Pages:888-896
AbstractIn order to evaluate the self-shading protection for inner photobionts, the photosynthetic activities of three crust lichens were detected using Microscope-Imaging-PAM. The false color images showed that longitudinal photosynthetic gradient was found in both the green algal lichen Placidium sp. and the cyanolichen Peltula sp. In longitudinal direction, all the four chlorophyll fluorescence parameters Fv/Fm, Yield, qP, and rETR gradually decreased with depth in the thalli of both of these two lichens. In Placidium sp., qN values decreased with depth, whereas an opposite trend was found in Peltula sp. However, no such photosynthetic heterogeneity was found in the thalli of Collema sp. in longitudinal direction. Microscope observation showed that photobiont cells are compactly arranged in Placidium sp. and Peltula sp. while loosely distributed in Collema sp. It was considered that the longitudinal photosynthetic heterogeneity was ascribed to the result of gradual decrease of incidence caused by the compact arrangement of photobiont cells in the thalli. The results indicate a good protection from the self-shading for the inner photobionts against high radiation in crust lichens.; In order to evaluate the self-shading protection for inner photobionts, the photosynthetic activities of three crust lichens were detected using Microscope-Imaging-PAM. The false color images showed that longitudinal photosynthetic gradient was found in both the green algal lichen Placidium sp. and the cyanolichen Peltula sp. In longitudinal direction, all the four chlorophyll fluorescence parameters Fv/Fm, Yield, qP, and rETR gradually decreased with depth in the thalli of both of these two lichens. In Placidium sp., qN values decreased with depth, whereas an opposite trend was found in Peltula sp. However, no such photosynthetic heterogeneity was found in the thalli of Collema sp. in longitudinal direction. Microscope observation showed that photobiont cells are compactly arranged in Placidium sp. and Peltula sp. while loosely distributed in Collema sp. It was considered that the longitudinal photosynthetic heterogeneity was ascribed to the result of gradual decrease of incidence caused by the compact arrangement of photobiont cells in the thalli. The results indicate a good protection from the self-shading for the inner photobionts against high radiation in crust lichens.
SubtypeArticle
KeywordBiological Soil Crusts Rapid Light Curves Chlorophyll Fluorescence Uv-b Green-algae Plants Stress Cyanobacteria Mechanisms Scytonemin
Department[Wu, Li; Zhang, Gaoke] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430072, Peoples R China; [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, Sch Sci, Wuhan 430070, Peoples R China
DOI10.1007/s00248-014-0366-9
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationChina Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204] ; China Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204] ; China Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204] ; China Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204]
Indexed BySCI
Language英语
WOS Research AreaEnvironmental Sciences & Ecology ; Marine & Freshwater Biology ; Microbiology
WOS SubjectEcology ; Marine & Freshwater Biology ; Microbiology
WOS IDWOS:000334495000016
WOS KeywordBIOLOGICAL SOIL CRUSTS ; RAPID LIGHT CURVES ; CHLOROPHYLL FLUORESCENCE ; UV-B ; GREEN-ALGAE ; PLANTS ; STRESS ; CYANOBACTERIA ; MECHANISMS ; SCYTONEMIN
Funding OrganizationChina Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204] ; China Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204] ; China Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204] ; China Postdoctoral Science Foundation [2013 M542077]; National Natural Science Foundation of China [31300100, 31170464]; National Forestry Public Welfare Industry Research project [201404204]
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/20105
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.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
3.Wuhan Univ Technol, Sch Sci, Wuhan 430070, Peoples R China
Recommended Citation
GB/T 7714
Wu, Li,Zhang, Gaoke,Lan, Shubin,et al. Longitudinal Photosynthetic Gradient in Crust Lichens' Thalli[J]. MICROBIAL ECOLOGY,2014,67(4):888-896.
APA Wu, Li,Zhang, Gaoke,Lan, Shubin,Zhang, Delu,Hu, Chunxiang,&Hu, CX .(2014).Longitudinal Photosynthetic Gradient in Crust Lichens' Thalli.MICROBIAL ECOLOGY,67(4),888-896.
MLA Wu, Li,et al."Longitudinal Photosynthetic Gradient in Crust Lichens' Thalli".MICROBIAL ECOLOGY 67.4(2014):888-896.
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