IHB OpenIR  > 藻类生物学及应用研究中心  > 期刊论文
Heterogeneity of buoyancy in response to light between two buoyant types of cyanobacterium Microcystis
Xiao, Yan1,2; Gan, Nanqin1; Liu, Jin1; Zheng, Lingling1; Song, Lirong1; Song, LR (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2012
Source PublicationHYDROBIOLOGIA
ISSN0018-8158
Volume679Issue:1Pages:297-311
AbstractPrevious investigations suggested that buoyancy state in response to light differed between individuals within natural populations of cyanobacteria. To understand the mechanisms of heterogeneity of buoyancy in different species/strains in relation to light, two types of colonial Microcystis in different buoyancy behavior were selected and used to compare their photosynthetic activity, gas vesicle volume, ballast mass, and migration at varying light regime. The photosynthesis-irradiance curve and F (v)/F (m) examination indicated that negatively buoyant strains were more adapted at high irradiance than buoyant ones. Transcription levels of gvp gene and gas vesicle volume decreased in buoyant strains, but increased in negatively buoyant ones at high irradiance. The results indicated that the combination effect of decrease in gas vesicle buoyancy and increase in carbohydrate contributed to the downward migration of buoyant strains, while the significant increase of gas vesicles provided sufficient buoyancy to negate ballast mass, resulting in the upward migration of negatively buoyant ones at high irradiance. In addition, either sinking or floating velocities were elevated in buoyant and negatively buoyant strains, coincidently with the colony enlargement of all strains at high irradiance, respectively. These findings suggest that this heterogeneity was associated with the interplay between gas vesicles, ballast, and colony size. The fact that different species/strains of Microcystis respond diversely to light depending on their physiological conditions presents a good example to understand heterogeneity of buoyancy in the field, and the presence of heterogeneity of buoyancy may be implicated in the dominancy and persistence of Microcystis bloom in ever-changing environment.; Previous investigations suggested that buoyancy state in response to light differed between individuals within natural populations of cyanobacteria. To understand the mechanisms of heterogeneity of buoyancy in different species/strains in relation to light, two types of colonial Microcystis in different buoyancy behavior were selected and used to compare their photosynthetic activity, gas vesicle volume, ballast mass, and migration at varying light regime. The photosynthesis-irradiance curve and F (v)/F (m) examination indicated that negatively buoyant strains were more adapted at high irradiance than buoyant ones. Transcription levels of gvp gene and gas vesicle volume decreased in buoyant strains, but increased in negatively buoyant ones at high irradiance. The results indicated that the combination effect of decrease in gas vesicle buoyancy and increase in carbohydrate contributed to the downward migration of buoyant strains, while the significant increase of gas vesicles provided sufficient buoyancy to negate ballast mass, resulting in the upward migration of negatively buoyant ones at high irradiance. In addition, either sinking or floating velocities were elevated in buoyant and negatively buoyant strains, coincidently with the colony enlargement of all strains at high irradiance, respectively. These findings suggest that this heterogeneity was associated with the interplay between gas vesicles, ballast, and colony size. The fact that different species/strains of Microcystis respond diversely to light depending on their physiological conditions presents a good example to understand heterogeneity of buoyancy in the field, and the presence of heterogeneity of buoyancy may be implicated in the dominancy and persistence of Microcystis bloom in ever-changing environment.
SubtypeArticle
KeywordBuoyancy Colonial Microcystis Heterogeneity Light Vertical Migration
Department[Xiao, Yan; Gan, Nanqin; Liu, Jin; Zheng, Lingling; Song, Lirong] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Xiao, Yan] Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
DOI10.1007/s10750-011-0894-y
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Funding OrganizationNational Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604] ; National Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604] ; National Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604] ; National Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604]
Indexed BySCI
Language英语
WOS Research AreaMarine & Freshwater Biology
WOS SubjectMarine & Freshwater Biology
WOS IDWOS:000297620100020
WOS KeywordPHOSPHATE-LIMITED CULTURES ; BLOOM-FORMING MICROCYSTIS ; GAS VESICLE COLLAPSE ; ANABAENA-FLOS-AQUAE ; VERTICAL MIGRATION ; TURGOR PRESSURE ; CELL BUOYANCY ; AERUGINOSA ; LAKE ; PHYTOPLANKTON
Funding OrganizationNational Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604] ; National Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604] ; National Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604] ; National Key Project for Basic Research[2008CB418001, 2008CB418006]; National Natural Science Foundation of China[31070355]; Natural Science Foundation of China[U0833604]
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16777
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorSong, LR (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Sch, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Yan,Gan, Nanqin,Liu, Jin,et al. Heterogeneity of buoyancy in response to light between two buoyant types of cyanobacterium Microcystis[J]. HYDROBIOLOGIA,2012,679(1):297-311.
APA Xiao, Yan,Gan, Nanqin,Liu, Jin,Zheng, Lingling,Song, Lirong,&Song, LR .(2012).Heterogeneity of buoyancy in response to light between two buoyant types of cyanobacterium Microcystis.HYDROBIOLOGIA,679(1),297-311.
MLA Xiao, Yan,et al."Heterogeneity of buoyancy in response to light between two buoyant types of cyanobacterium Microcystis".HYDROBIOLOGIA 679.1(2012):297-311.
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