Isolation, purification and characterization of an anaerobic methane oxidizer

An anaerobic bacterial isolate capable of oxidizing methane anaerobically was isolated from a rice soil developed from coastal saline soil and was named Strain AMOB3. The cells of this strain were rod-shaped with a size of (0.3-0.5) µm × (0.7-0.8) μm, without flagella, without mobility, and Gram-neg...

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Main Authors: MIN Hang, TAN Yu-long, WU Wei-xiang, CHEN Zhong-yun, CHEN Mei-ci
Format: Article
Language:English
Published: Zhejiang University Press 2002-11-01
Series:浙江大学学报. 农业与生命科学版
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Online Access:https://www.academax.com/doi/10.3785/1008-9209.2002.06.0619
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author MIN Hang
TAN Yu-long
WU Wei-xiang
CHEN Zhong-yun
CHEN Mei-ci
author_facet MIN Hang
TAN Yu-long
WU Wei-xiang
CHEN Zhong-yun
CHEN Mei-ci
author_sort MIN Hang
collection DOAJ
description An anaerobic bacterial isolate capable of oxidizing methane anaerobically was isolated from a rice soil developed from coastal saline soil and was named Strain AMOB3. The cells of this strain were rod-shaped with a size of (0.3-0.5) µm × (0.7-0.8) μm, without flagella, without mobility, and Gram-negative. The colonies of the strain formed on anaerobic agar medium were very small, with diameter of 0.2 mm. The strain could utilize methane, methanol fairly well but use formate ineffectively. Glucose, sucrose, malatose, lactose, methylamine, dimethylamine and trimethylamine etc. was not metabolized; NH<sub>4</sub><sup>+</sup>-N, but not NO<sub>3</sub><sup>-</sup>, could be used as the nitrogen source. The optimum pH of culture medium was 6.5 with an effective range from 5.5 to 7.5 and the optimum temperature was 30 C ranged from 25 C to 35 C. The cell of the strain possessed a membrane running around peripheral cytoplasm, which was similar to structure of the type Ⅱ membrane in aerobic methane oxidizers. The methane oxidizing ability of the strain was confirmed by gas chromatographic analysis of the gas phase from the culture tube. It was considered that Strain AMOB3 might be a new species of methane oxidizer which could anaerobically utilize methane, based on comparison of its bio-characteristics and other aerobic methane oxidizers.
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spelling doaj-art-8a6736a5eec34ca79a024ea48e39236a2025-08-20T02:54:50ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552002-11-012861962410.3785/1008-9209.2002.06.061910089209Isolation, purification and characterization of an anaerobic methane oxidizerMIN HangTAN Yu-longWU Wei-xiangCHEN Zhong-yunCHEN Mei-ciAn anaerobic bacterial isolate capable of oxidizing methane anaerobically was isolated from a rice soil developed from coastal saline soil and was named Strain AMOB3. The cells of this strain were rod-shaped with a size of (0.3-0.5) µm × (0.7-0.8) μm, without flagella, without mobility, and Gram-negative. The colonies of the strain formed on anaerobic agar medium were very small, with diameter of 0.2 mm. The strain could utilize methane, methanol fairly well but use formate ineffectively. Glucose, sucrose, malatose, lactose, methylamine, dimethylamine and trimethylamine etc. was not metabolized; NH<sub>4</sub><sup>+</sup>-N, but not NO<sub>3</sub><sup>-</sup>, could be used as the nitrogen source. The optimum pH of culture medium was 6.5 with an effective range from 5.5 to 7.5 and the optimum temperature was 30 C ranged from 25 C to 35 C. The cell of the strain possessed a membrane running around peripheral cytoplasm, which was similar to structure of the type Ⅱ membrane in aerobic methane oxidizers. The methane oxidizing ability of the strain was confirmed by gas chromatographic analysis of the gas phase from the culture tube. It was considered that Strain AMOB3 might be a new species of methane oxidizer which could anaerobically utilize methane, based on comparison of its bio-characteristics and other aerobic methane oxidizers.https://www.academax.com/doi/10.3785/1008-9209.2002.06.0619methane oxidationanaerobic methane oxidationmethane oxidizeranaerobic methane oxidizer
spellingShingle MIN Hang
TAN Yu-long
WU Wei-xiang
CHEN Zhong-yun
CHEN Mei-ci
Isolation, purification and characterization of an anaerobic methane oxidizer
浙江大学学报. 农业与生命科学版
methane oxidation
anaerobic methane oxidation
methane oxidizer
anaerobic methane oxidizer
title Isolation, purification and characterization of an anaerobic methane oxidizer
title_full Isolation, purification and characterization of an anaerobic methane oxidizer
title_fullStr Isolation, purification and characterization of an anaerobic methane oxidizer
title_full_unstemmed Isolation, purification and characterization of an anaerobic methane oxidizer
title_short Isolation, purification and characterization of an anaerobic methane oxidizer
title_sort isolation purification and characterization of an anaerobic methane oxidizer
topic methane oxidation
anaerobic methane oxidation
methane oxidizer
anaerobic methane oxidizer
url https://www.academax.com/doi/10.3785/1008-9209.2002.06.0619
work_keys_str_mv AT minhang isolationpurificationandcharacterizationofananaerobicmethaneoxidizer
AT tanyulong isolationpurificationandcharacterizationofananaerobicmethaneoxidizer
AT wuweixiang isolationpurificationandcharacterizationofananaerobicmethaneoxidizer
AT chenzhongyun isolationpurificationandcharacterizationofananaerobicmethaneoxidizer
AT chenmeici isolationpurificationandcharacterizationofananaerobicmethaneoxidizer