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首页> 外文期刊>Limnology >Spatiotemporal variations in the abundances of the prokaryotic rRNA genes, pmoA, and mcrA in the deep layers of a peat bog in Sarobetsu-genya wetland, Japan
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Spatiotemporal variations in the abundances of the prokaryotic rRNA genes, pmoA, and mcrA in the deep layers of a peat bog in Sarobetsu-genya wetland, Japan

机译：日本Sarobetsu-genya湿地泥炭沼泽深层原核rRNA基因，pmoA和mcrA丰度的时空变化

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摘要

Spatiotemporal variations in microbial gene abundances were investigated to identify potential zones of methanotroph and methanogen biomass in a peat bog in Sarobetsu-genya wetland. The abundances of the bacterial and archaeal 16S rRNA genes, pmoA, and mcrA were 107–109, 107–108, 104–106, and 104–107 copies g−1 dry peat, respectively. Correlation analysis based on microbial gene abundances and environmental factors showed that the spatiotemporal distributions of the abundances of the four microbial genes in peat layers were similar. The mcrA abundance showed a significant negative correlation with the dissolved organic carbon content and a significant positive correlation with the peat temperature. The pmoA abundance was not detectable during the spring thaw when the lowest peat temperature at a depth of 50 cm was recorded. At a depth of 200 cm, the peat temperature exceeded 6°C throughout the year, and the mcrA abundance exceeded 104 copies g−1 dry peat. These results indicate that the seasonal microbial activity related to methane should be evaluated in not only the shallow but also the deep peat layers in order to elucidate the methane dynamics in boreal wetlands.
机译：调查了微生物基因丰度的时空变化，以识别Sarobetsu-genya湿地泥炭沼泽中甲烷营养和甲烷源生物量的潜在区域。细菌和古细菌的16S rRNA基因，pmoA和mcrA的丰度分别为107 –109 ，107 -108 ，104 -106 和104 –107 分别复制g-1 干泥炭。基于微生物基因丰度和环境因素的相关分析表明，泥炭层中四种微生物基因的丰度时空分布相似。 mcrA丰度与溶解有机碳含量呈显着负相关，与泥炭温度呈显着正相关。当记录到50 cm深度的最低泥炭温度时，在春季解冻过程中无法检测到pmoA丰度。在200 cm的深度处，泥炭温度全年超过6°C，并且mcrA丰度超过104份g-1 干燥泥炭。这些结果表明，不仅要评估浅层泥炭层，还要评估深层泥炭层与甲烷有关的季节性微生物活动，以阐明北方湿地中甲烷的动态。

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  • 来源
    《Limnology》 |2011年第1期|p.1-9|共9页
  • 作者

    Masaru Akiyama; Satoru Shimizu; Toshiaki Sakai; Seiichiro Ioka; Yoji Ishijima; Takeshi Naganuma;

  • 作者单位

    Horonobe Research Institute for the Subsurface Environment, Northern Advancement Center for Science and Technology, 5-3 Sakaemachi, Horonobe-cho, Hokkaido, 098-3221, Japan;

    Horonobe Research Institute for the Subsurface Environment, Northern Advancement Center for Science and Technology, 5-3 Sakaemachi, Horonobe-cho, Hokkaido, 098-3221, Japan;

    Horonobe Research Institute for the Subsurface Environment, Northern Advancement Center for Science and Technology, 5-3 Sakaemachi, Horonobe-cho, Hokkaido, 098-3221, Japan;

    Horonobe Research Institute for the Subsurface Environment, Northern Advancement Center for Science and Technology, 5-3 Sakaemachi, Horonobe-cho, Hokkaido, 098-3221, Japan;

    Horonobe Research Institute for the Subsurface Environment, Northern Advancement Center for Science and Technology, 5-3 Sakaemachi, Horonobe-cho, Hokkaido, 098-3221, Japan;

    Graduate School of Biosphere Science;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Sarobetsu-genya wetland; pmoA; mcrA; Spatiotemporal variation; Quantitative polymerase chain reaction;

    机译：猿猴属湿地;pmoA;mcrA;时空变化;定量聚合酶链反应;

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