Abstract
Nitrospira is a dominant member of nitrite-oxidizing bacteria (NOB) in nitrifying bioreactors as well as in natural habitats. In this study, Nitrospira NOB were investigated in the two nitrifying reactors operated with high and low dissolved oxygen (DO) concentrations for a period of 300 days. Phylogenetic and terminal restriction fragment length polymorphism analyses based on 16S rRNA gene sequences revealed that the Nitrospira community compositions of the two reactors during the early period related to group 1 and half of the Nitrospira community composition shifted to group 2 in the high-DO reactor after day 179, although there was no significant change in the low-DO reactor. These results suggested that DO was an important factor affecting Nitrospira community compositions in the nitrifying reactors.
| Original language | English |
|---|---|
| Pages (from-to) | 1470-1474 |
| Number of pages | 5 |
| Journal | Journal of Microbiology and Biotechnology |
| Volume | 18 |
| Issue number | 8 |
| Publication status | Published - 2008 Aug 28 |
| Externally published | Yes |
Fingerprint
Keywords
- Dissolved oxygen
- Nitrification
- Nitrite-oxidizing bacteria
- Nitrospira
- Terminal restriction fragment length polymorphism (t-RFLP)
ASJC Scopus subject areas
- Biotechnology
- Applied Microbiology and Biotechnology
Cite this
Nitrospira community composition in nitrifying reactors operated with two different dissolved oxygen levels. / Park, Hee-Deung; Noguera, Daniel R.
In: Journal of Microbiology and Biotechnology, Vol. 18, No. 8, 28.08.2008, p. 1470-1474.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Nitrospira community composition in nitrifying reactors operated with two different dissolved oxygen levels
AU - Park, Hee-Deung
AU - Noguera, Daniel R.
PY - 2008/8/28
Y1 - 2008/8/28
N2 - Nitrospira is a dominant member of nitrite-oxidizing bacteria (NOB) in nitrifying bioreactors as well as in natural habitats. In this study, Nitrospira NOB were investigated in the two nitrifying reactors operated with high and low dissolved oxygen (DO) concentrations for a period of 300 days. Phylogenetic and terminal restriction fragment length polymorphism analyses based on 16S rRNA gene sequences revealed that the Nitrospira community compositions of the two reactors during the early period related to group 1 and half of the Nitrospira community composition shifted to group 2 in the high-DO reactor after day 179, although there was no significant change in the low-DO reactor. These results suggested that DO was an important factor affecting Nitrospira community compositions in the nitrifying reactors.
AB - Nitrospira is a dominant member of nitrite-oxidizing bacteria (NOB) in nitrifying bioreactors as well as in natural habitats. In this study, Nitrospira NOB were investigated in the two nitrifying reactors operated with high and low dissolved oxygen (DO) concentrations for a period of 300 days. Phylogenetic and terminal restriction fragment length polymorphism analyses based on 16S rRNA gene sequences revealed that the Nitrospira community compositions of the two reactors during the early period related to group 1 and half of the Nitrospira community composition shifted to group 2 in the high-DO reactor after day 179, although there was no significant change in the low-DO reactor. These results suggested that DO was an important factor affecting Nitrospira community compositions in the nitrifying reactors.
KW - Dissolved oxygen
KW - Nitrification
KW - Nitrite-oxidizing bacteria
KW - Nitrospira
KW - Terminal restriction fragment length polymorphism (t-RFLP)
UR - http://www.scopus.com/inward/record.url?scp=56749131424&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=56749131424&partnerID=8YFLogxK
M3 - Article
C2 - 18756110
AN - SCOPUS:56749131424
VL - 18
SP - 1470
EP - 1474
JO - Journal of Microbiology and Biotechnology
JF - Journal of Microbiology and Biotechnology
SN - 1017-7825
IS - 8
ER -