Heat stress and methane-oxidizing bacteria: Effects on activity and population dynamics
Heat stress and methane-oxidizing bacteria: Effects on activity and population dynamics
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DOI：
10.1016/j.soilbio.2012.02.023
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发表时间：
2012-07-01
影响因子：
9.7
通讯作者：
Frenzel, Peter
中科院分区：
文献类型：
--
作者：
Ho, Adrian;Frenzel, Peter
我们在水稻土的实验室规模实验中研究了急剧升温（热应激）对甲烷氧化和甲烷氧化菌群落结构的影响。甲烷氧化具有弹性，在热应激后六天就已经恢复，后来甚至达到了比对照更高的值。 qPCR 和末端限制性长度多态性 (T-RFLP) 一致表明，II 型甲烷氧化菌随着时间的推移而增加。虽然这是总体趋势，但在 45 摄氏度的热应激后，II 型甲烷氧化菌的初始增加更加明显。I 型甲烷氧化菌与 II 型和温度呈负相关。总体而言，热应激是使群落转向 II 型甲烷氧化菌占主导地位的潜在因素。 (C) 2012 Elsevier Ltd. 保留所有权利。
We studied the effects of an acute temperature increase (heat stress) on methane oxidation and methanotroph community structure in a laboratory-scale experiment with paddy soil. Methane oxidation was resilient, recovering already six days after heat stress, and later on even reached higher values than in the control. It was consistently shown by qPCR and by terminal restriction length polymorphism (T-RFLP) that type II methanotrophs increased over time. While this was a general trend, the initial increase of type II was much more pronounced after heat stress at 45 degrees C. Type I methanotrophs were inversely correlated to type II and temperature. Overall, heat stress is a potential factor shifting the community towards a dominance of type II methanotrophs. (C) 2012 Elsevier Ltd. All rights reserved.