Abstract:
:Because methane-oxidizing bacteria (MOB) are the only biological sink for the greenhouse gas methane, knowledge of the functioning of these bacteria in various ecosystems is needed to understand the dynamics observed in global methane emission. The activity of MOB is commonly assessed by methane oxidation assays. The resulting methane depletion curves often follow a biphasic pattern of initial and induced methane oxidation activity, often interpreted as representing the in situ active and total MOB community, respectively. The application of quantitative-PCR on soil incubations, which were stopped before, at and after the transition point in the methane-depletion curve, demonstrated that both pmoA-mRNA was produced as well as substantial cell growth took place already in the initial phase. In addition, type Ia and II MOB displayed markedly different behaviour, which can be interpreted as ecologically different strategies. For the correct interpretation of methane oxidation assays, the use of small time windows is recommended to calculate methane oxidation activities to avoid substantial cell growth.
journal_name
FEMS Microbiol Ecoljournal_title
FEMS microbiology ecologyauthors
Steenbergh AK,Meima MM,Kamst M,Bodelier PLdoi
10.1111/j.1574-6941.2009.00782.xsubject
Has Abstractpub_date
2010-01-01 00:00:00pages
12-22issue
1eissn
0168-6496issn
1574-6941pii
FEM782journal_volume
71pub_type
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