PMID- 22818951
OWN - NLM
STAT- MEDLINE
DCOM- 20130122
LR  - 20220330
IS  - 1879-2448 (Electronic)
IS  - 0043-1354 (Linking)
VI  - 46
IP  - 16
DP  - 2012 Oct 15
TI  - Earthy odor compounds production and loss in three cyanobacterial cultures.
PG  - 5165-73
LID - 10.1016/j.watres.2012.06.008 [doi]
AB  - Geosmin and 2-methylisoborneol (MIB) related odor events caused by cyanobacteria 
      have been a very common problem to water supply. This paper investigated the 
      effects of temperature (18 and 25  degrees C) and light intensity (10 and 100 mumol 
      photons m(-2) s(-1)) on the production behaviors of earthy odor compounds by 
      three odorous cyanobacteria, i.e., the geosmin-producing planktonic Anabaena 
      circinalis (Ana 318), geosmin-producing benthic Phormidium amoenum (Pho 012) and 
      MIB-producing benthic Phormidium sp. (Pho 689). At the same time, the effects of 
      biodegradation and volatilization on the fates of the released odor compounds in 
      water were also evaluated. The combination of high temperature (25  degrees C) and light 
      intensity (100 mumol photons m(-2) s(-1)) favored the growth of the three 
      cyanobacteria and the production of chl-a and odor compounds. However, higher 
      chl-a and odor yields (average odor compounds per cell) were achieved for the two 
      benthic cyanobacteria at the temperature of 18  degrees C. Most of geosmin was included 
      within the cells for Ana 318 (95-99%) and Pho 012 (85-60%), while only 20-40% MIB 
      was bound to the cells for Pho 689. The half-life times of MIB and geosmin due to 
      volatilization varied between 18.8 and 35.4 days, while 8 out of 10 samples 
      exhibited a half-life time (t(1/2)) for geosmin biodegradation shorter than 1 day 
      (0.38-15.0 h), showing that biodegradation could affect the fate of geosmin 
      significantly in aquatic environments. In comparison, biodegradation of MIB was 
      much slower (t(1/2): 122-2166 h). Denaturing gradient gel electrophoresis (DGGE) 
      analysis showed that Pseudomonas- and Sphingomonas-like bacteria coexisted with 
      cyanobacteria in the cultures, and may have played an important role in 
      geosmin/MIB biodegradation. The result of this study will be helpful for better 
      understanding and managing the earthy odor problems caused by cyanobacteria in 
      water supply.
CI  - Copyright (c) 2012 Elsevier Ltd. All rights reserved.
FAU - Li, Zonglai
AU  - Li Z
AD  - State Key Laboratory of Environmental Aquatic Chemistry, Research Center for 
      Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. 
      lizonglai@gmail.com
FAU - Hobson, Peter
AU  - Hobson P
FAU - An, Wei
AU  - An W
FAU - Burch, Michael D
AU  - Burch MD
FAU - House, Jenny
AU  - House J
FAU - Yang, Min
AU  - Yang M
LA  - eng
PT  - Comparative Study
PT  - Journal Article
DEP - 20120617
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - 0 (Camphanes)
RN  - 0 (Naphthols)
RN  - 1406-65-1 (Chlorophyll)
RN  - 2371-42-8 (2-methylisoborneol)
RN  - MYW912WXJ4 (geosmin)
RN  - YF5Q9EJC8Y (Chlorophyll A)
SB  - IM
MH  - Australia
MH  - Biodegradation, Environmental
MH  - California
MH  - Camphanes/*chemistry
MH  - Chlorophyll/analysis
MH  - Chlorophyll A
MH  - Cyanobacteria/*chemistry/growth & development
MH  - Denaturing Gradient Gel Electrophoresis
MH  - Light
MH  - Naphthols/*chemistry
MH  - Odorants/*analysis
MH  - Species Specificity
MH  - Temperature
MH  - Volatilization
MH  - Water Supply/*standards
EDAT- 2012/07/24 06:00
MHDA- 2013/01/23 06:00
CRDT- 2012/07/24 06:00
PHST- 2012/03/21 00:00 [received]
PHST- 2012/06/05 00:00 [revised]
PHST- 2012/06/06 00:00 [accepted]
PHST- 2012/07/24 06:00 [entrez]
PHST- 2012/07/24 06:00 [pubmed]
PHST- 2013/01/23 06:00 [medline]
AID - S0043-1354(12)00404-6 [pii]
AID - 10.1016/j.watres.2012.06.008 [doi]
PST - ppublish
SO  - Water Res. 2012 Oct 15;46(16):5165-73. doi: 10.1016/j.watres.2012.06.008. Epub 
      2012 Jun 17.