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【答案】应助回帖
★ ★ ★ ★ ★
感谢参与，应助指数 +1
jlwang: 金币+5 2015-01-07 23:36:17
oven1986: LS-EPI+1, 感谢应助。 2015-01-08 10:37:13
High Genetic Diversity and Novelty in Eukaryotic Plankton Assemblages Inhabiting Saline Lakes in the Qaidam Basin
作者:Wang, JL (Wang, Jiali)[ 1,2 ] ; Wang, F (Wang, Fang)[ 1 ] ; Chu, LM (Chu, Limin)[ 1,3 ] ; Wang, H (Wang, Hao)[ 1 ] ; Zhong, ZP (Zhong, Zhiping)[ 4 ] ; Liu, ZP (Liu, Zhipei)[ 4 ] ; Gao, JY (Gao, Jianyong)[ 5 ] ; Duan, HR (Duan, Hairong)[ 5 ]
PLOS ONE
卷: 9 期: 11
文献号: e112812
DOI: 10.1371/journal.pone.0112812
出版年: NOV 17 2014
查看期刊信息
摘要
Saline lakes are intriguing ecosystems harboring extremely productive microbial communities in spite of their extreme environmental conditions. We performed a comprehensive analysis of the genetic diversity (18S rRNA gene) of the planktonic microbial eukaryotes (nano- and picoeukaryotes) in six different inland saline lakes located in the Qaidam Basin. The novelty level are high, with about 11.23% of the whole dataset showing <90% identity to any previously reported sequence in GenBank. At least 4 operational taxonomic units (OTUs) in mesosaline lakes, while up to eighteen OTUs in hypersaline lakes show very low CCM and CEM scores, indicating that these sequences are highly distantly related to any existing sequence. Most of the 18S rRNA gene sequence reads obtained in investigated mesosaline lakes is closely related to Holozoa group (48.13%), whereas Stramenopiles (26.65%) and Alveolates (10.84%) are the next most common groups. Hypersaline lakes in the Qaidam Basin are also dominated by Holozoa group, accounting for 26.65% of the total number of sequence reads. Notably, Chlorophyta group are only found in high abundance in Lake Gasikule (28.00%), whereas less represented in other hypersaline lakes such as Gahai (0.50%) and Xiaochaidan (1.15%). Further analysis show that the compositions of planktonic eukaryotic assemblages are also most variable between different sampling sites in the same lake. Out of the parameters, four show significant correlation to this CCA: altitude, calcium, sodium and potassium concentrations. Overall, this study shows important gaps in the current knowledge about planktonic microbial eukaryotes inhabiting Qaidam Basin (hyper) saline water bodies. The identified diversity and novelty patterns among eukaryotic plankton assemblages in saline lake are of great importance for understanding and interpreting their ecology and evolution.
关键词
KeyWords Plus:WESTERN NORTH-ATLANTIC; IN-SITU HYBRIDIZATION; RIBOSOMAL-RNA; BACTERIAL DIVERSITY; RARE BIOSPHERE; MOLECULAR DIVERSITY; MICROBIAL DIVERSITY; 80S RIBOSOME; SALT LAKES; BALTIC SEA
作者信息
通讯作者地址: Wang, F (通讯作者)
A-1 Fuxing Rd, Beijing, Peoples R China.
地址:
[ 1 ] China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing, Peoples R China
[ 2 ] Inst Shandong River Wetlands, Laiwu, Peoples R China
显示增强组织信息的名称 [ 3 ] Hohai Univ, Coll Hydrol & Water Resource, Nanjing, Jiangsu, Peoples R China
显示增强组织信息的名称 [ 4 ] Chinese Acad Sci, Inst Microbiol, Beijing, Peoples R China
[ 5 ] Genewiz Inc, Beijing, Peoples R China
电子邮件地址:wangf@iwhr.com |
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