Abstract：
:This research aimed to study the diversity of purple nonsulfur bacteria (PNSB) and to investigate the effect of Hg concentrations in shrimp ponds on PNSB diversity. Amplification of the pufM gene was detected in 13 and 10 samples of water and sediment collected from 16 shrimp ponds in Southern Thailand. In addition to PNSB, other anoxygenic phototrophic bacteria (APB) were also observed; purple sulfur bacteria (PSB) and aerobic anoxygenic phototrophic bacteria (AAPB) although most of them could not be identified. Among identified groups; AAPB, PSB and PNSB in the samples of water and sediment were 25.71, 11.43 and 8.57%; and 27.78, 11.11 and 22.22%, respectively. In both sample types, Roseobacter denitrificans (AAPB) was the most dominant species followed by Halorhodospira halophila (PSB). In addition two genera, observed most frequently in the sediment samples were a group of PNSB (Rhodovulum kholense, Rhodospirillum centenum and Rhodobium marinum). The UPGMA dendrograms showed 7 and 6 clustered groups in the water and sediment samples, respectively. There was no relationship between the clustered groups and the total Hg (HgT) concentrations in the water and sediment samples used (<0.002-0.03 μg/L and 35.40-391.60 μg/kg dry weight) for studying the biodiversity. It can be concluded that there was no effect of the various Hg levels on the diversity of detected APB species; particularly the PNSB in the shrimp ponds.
journal_name
Saudi J Biol Scijournal_title
Saudi journal of biological sciencesauthors
Mukkata K,Kantachote D,Wittayaweerasak B,Techkarnjanaruk S,Boonapatcharoen Ndoi
10.1016/j.sjbs.2015.05.014subject
Has Abstractpub_date
2016-07-01 00:00:00pages
478-87issue
4eissn
1319-562Xissn
2213-7106pii
S1319-562X(15)00129-1journal_volume
23pub_type
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journal_title：Saudi journal of biological sciences
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journal_title：Saudi journal of biological sciences
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更新日期：2019-11-01 00:00:00
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journal_title：Saudi journal of biological sciences
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pub_type： 杂志文章,评审
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journal_title：Saudi journal of biological sciences
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journal_title：Saudi journal of biological sciences
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journal_title：Saudi journal of biological sciences
pub_type： 杂志文章
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更新日期：2020-01-01 00:00:00
