PMID- 21735127 OWN - NLM STAT- MEDLINE DCOM- 20120316 LR - 20211020 IS - 1573-3017 (Electronic) IS - 0963-9292 (Print) IS - 0963-9292 (Linking) VI - 20 IP - 8 DP - 2011 Nov TI - Mangrove trees affect the community structure and distribution of anammox bacteria at an anthropogenic-polluted mangrove in the Pearl River Delta reflected by 16S rRNA and hydrazine oxidoreductase (HZO) encoding gene analyses. PG - 1780-90 LID - 10.1007/s10646-011-0711-4 [doi] AB - Anaerobic ammonium oxidizing (anammox) bacterial community structures were investigated in surface (1-2 cm) and lower (20-21 cm) layers of mangrove sediments at sites located immediately to the mangrove trees (S0), 10 m (S1) and 1000 m (S2) away from mangrove trees in a polluted area of the Pearl River Delta. At S0, both 16S rRNA and hydrazine oxidoreductase (HZO) encoding genes of anammox bacteria showed high diversity in lower layer sediments, but they were not detectable in lower layer sediments in mangrove forest. S1 and S2 shared similar anammox bacteria communities in both surface and lower layers, which were quite different from that of S0. At all three locations, higher richness of anammox bacteria was detected in the surface layer than the lower layer; 16S rRNA genes revealed anammox bacteria were composed by four phylogenetic clusters affiliated with the "Scalindua" genus, and one group related to the potential anammox bacteria; while the hzo genes showed that in addition to sequences related to the "Scalindua", sequences affiliated with genera of "Kuenenia", "Brocadia", and "Jettenia" were also detected in mangrove sediments. Furthermore, hzo gene abundances decreased from 36.5 x 10(4) to 11.0 x 10(4) copies/gram dry sediment in lower layer sediments while increased from below detection limit to 31.5 x 10(4) copies/gram dry sediment in lower layer sediments from S0 to S2. The results indicated that anammox bacteria communities might be strongly influenced by mangrove trees. In addition, the correlation analysis showed the redox potential and the molar ratio of ammonium to nitrite in sediments might be important factors affecting the diversity and distribution of anammox bacteria in mangrove sediments. FAU - Li, Meng AU - Li M AD - School of Biological Sciences, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, People's Republic of China. FAU - Hong, Yi-Guo AU - Hong YG FAU - Cao, Hui-Luo AU - Cao HL FAU - Gu, Ji-Dong AU - Gu JD LA - eng SI - GENBANK/GQ331333 SI - GENBANK/GQ331334 SI - GENBANK/GQ331335 SI - GENBANK/GQ331336 SI - GENBANK/GQ331337 SI - GENBANK/GQ331338 SI - GENBANK/GQ331339 SI - GENBANK/GQ331340 SI - GENBANK/GQ331341 SI - GENBANK/GQ331342 SI - GENBANK/GQ331343 SI - GENBANK/GQ331344 SI - GENBANK/GQ331345 SI - GENBANK/GQ331346 SI - GENBANK/GQ331347 SI - GENBANK/GQ331348 SI - GENBANK/GQ331349 SI - GENBANK/GQ331350 SI - GENBANK/GQ331351 SI - GENBANK/GQ331352 SI - GENBANK/GQ331353 SI - GENBANK/GQ331354 SI - GENBANK/GQ331355 SI - GENBANK/GQ331356 SI - GENBANK/GQ331357 SI - GENBANK/GQ331358 SI - GENBANK/GQ331359 SI - GENBANK/GQ331360 SI - GENBANK/GQ331361 SI - GENBANK/GQ331362 SI - GENBANK/GQ331363 SI - GENBANK/GQ331364 SI - GENBANK/GQ331365 SI - GENBANK/GQ331366 SI - GENBANK/GQ331367 SI - GENBANK/GQ331368 SI - GENBANK/GQ331369 SI - GENBANK/GQ331370 SI - GENBANK/GQ331371 SI - GENBANK/GQ331372 SI - GENBANK/GQ331373 SI - GENBANK/GQ331374 SI - GENBANK/GQ331375 SI - GENBANK/GQ331376 SI - GENBANK/GQ331377 SI - GENBANK/GQ331378 SI - GENBANK/GQ331379 SI - GENBANK/GQ331380 SI - GENBANK/GQ331381 SI - GENBANK/GQ331382 SI - GENBANK/GQ331383 SI - GENBANK/GQ331384 SI - GENBANK/GQ331385 SI - GENBANK/GQ331386 SI - GENBANK/GQ331387 SI - GENBANK/GQ331388 SI - GENBANK/GQ331389 PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110707 PL - United States TA - Ecotoxicology JT - Ecotoxicology (London, England) JID - 9885956 RN - 0 (Hydrazines) RN - 0 (Nitrites) RN - 0 (Quaternary Ammonium Compounds) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (Water Pollutants) RN - 27RFH0GB4R (hydrazine) RN - EC 1.- (Oxidoreductases) SB - IM MH - Bacteria/*genetics MH - *Biota MH - China MH - Geologic Sediments/*microbiology MH - Hydrazines MH - Molecular Sequence Data MH - Nitrites/metabolism MH - Oxidation-Reduction MH - Oxidoreductases/*genetics MH - Phylogeny MH - Quaternary Ammonium Compounds/metabolism MH - *RNA, Ribosomal, 16S MH - Rivers MH - *Trees MH - Water Pollutants MH - Wetlands PMC - PMC3195777 EDAT- 2011/07/08 06:00 MHDA- 2012/03/17 06:00 PMCR- 2011/07/07 CRDT- 2011/07/08 06:00 PHST- 2011/06/03 00:00 [accepted] PHST- 2011/07/08 06:00 [entrez] PHST- 2011/07/08 06:00 [pubmed] PHST- 2012/03/17 06:00 [medline] PHST- 2011/07/07 00:00 [pmc-release] AID - 711 [pii] AID - 10.1007/s10646-011-0711-4 [doi] PST - ppublish SO - Ecotoxicology. 2011 Nov;20(8):1780-90. doi: 10.1007/s10646-011-0711-4. Epub 2011 Jul 7.