Thermodynamically diverse syntrophic aromatic compound catabolism

Nobu Masaru Konishi; Narihiro Takashi; Liu Miaomiao; Kuroda Kyohei; Mei Ran; Liu Wen‐Tso

摘要

Summary > Specialized organotrophic Bacteria ‘syntrophs’ and methanogenic Archaea ‘methanogens’ form a unique metabolic interaction to accomplish cooperative mineralization of organic compounds to CH <sub>4</sub> and CO <sub>2</sub> . Due to challenges in cultivation of syntrophs, mechanisms for how their organotrophic catabolism circumvents thermodynamic restrictions remain unclear. In this study, we investigate two communities hosting diverse syntrophic aromatic compound metabolizers ( Syntrophus , Syntrophorhabdus , Pelotomaculum and an uncultivated Syntrophorhabdacaeae member) to uncover their catabolic diversity and flexibility. Although syntrophs have been generally presumed to metabolize aromatic compounds to acetate, CO <sub>2</sub> , H <sub>2</sub> and formate, combined metagenomics and metatranscriptomics show that uncultured syntrophs utilize unconventional alternative metabolic pathways in situ producing butyrate, cyclohexanecarboxylate and benzoate as catabolic byproducts. In addition, we also find parallel utilization of diverse H <sub>2</sub> and formate generating pathways to facilitate interactions with partner methanogens. Based on thermodynamic calculations, these pathways may enable syntrophs to combat thermodynamic restrictions. In addition, when fed with specific substrates (i.e., benzoate, terephthalate or trimellitate), each syntroph population expresses different pathways, suggesting ecological diversification among syntrophs. These findings suggest we may be drastically underestimating the biochemical capabilities, strategies and diversity of syntrophic bact </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><abstract xmlns =“http://www.wiley.com/namespaces/wiley”type =“main”> <title type =“main”>摘要</ title> >专业有机营养细菌</ i >'Syntrophs'和甲烷化学 archaea </ i>'甲烷基因'形成独特的代谢相互作用，以实现有机化合物的协同矿化到CH <sub> 4 </ sub>和CO <sub> 2 </ sub>。由于培养了Syntrophs的挑战，他们的有机萎缩分解代谢如何规避热力学限制的机制仍不清楚。在这项研究中，我们研究了两种宿主多样化的同步芳族化合物代谢剂（ Syntrophus </ i>， Syntrophorhabdus， Pelotomaculum </ i>和一个未开垦的 Syntrophorhabdacaeae </我>会员）揭示他们的分解多样性和灵活性。虽然已经推测了同步的芳族化合物对乙酸酯，CO <sub> 2 </ sub>，H <sub> 2 </ sub>，组合的替代术和MetaTranscriptomics表明，未培养的同步术语利用非常规替代代谢途径<i >原位</ i>将丁酸盐，环己烷羧酸丁酯和苯甲酸盐作为分解代谢副产物生产。此外，我们还发现不同H <sub> 2 </ sub>的并行利用，并形成产生途径，以促进与合作伙伴甲烷的相互作用。基于热力学计算，这些途径可以使Syntrophs能够打击热力学限制。另外，当用特定底物（即，苯甲酸盐，对苯二甲酸酯或近晶二酚）喂养时，每个Syntroph群表达不同的途径，表明同步的生态多样化。这些调查结果表明，我们可能会急剧低估了语法Bact的生化能力，策略和多样性 </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" > 著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-22868/'>《Environmental microbiology 》</a> <b style="margin: 0 2px;">|</b><span>2017年第11期</span><b style="margin: 0 2px;">|</b> <span>共11页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Nobu Masaru Konishi&option=202" target="_blank" rel="nofollow">Nobu Masaru Konishi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Narihiro Takashi&option=202" target="_blank" rel="nofollow">Narihiro Takashi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liu Miaomiao&option=202" target="_blank" rel="nofollow">Liu Miaomiao;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kuroda Kyohei&option=202" target="_blank" rel="nofollow">Kuroda Kyohei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mei Ran&option=202" target="_blank" rel="nofollow">Mei Ran;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liu Wen‐Tso&option=202" target="_blank" rel="nofollow">Liu Wen‐Tso;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Civil and Environmental EngineeringUniversity of Illinois at Urbana‐Champaign 205 North Mathews AveUrbana IL 61801 USA;</p> <p>Department of Civil and Environmental EngineeringUniversity of Illinois at Urbana‐Champaign 205 North Mathews AveUrbana IL 61801 USA;</p> <p>Department of Civil and Environmental EngineeringUniversity of Illinois at Urbana‐Champaign 205 North Mathews AveUrbana IL 61801 USA;</p> <p>Department of Civil and Environmental EngineeringUniversity of Illinois at Urbana‐Champaign 205 North Mathews AveUrbana IL 61801 USA;</p> <p>Department of Civil and Environmental EngineeringUniversity of Illinois at Urbana‐Champaign 205 North Mathews AveUrbana IL 61801 USA;</p> <p>Department of Civil and Environmental EngineeringUniversity of Illinois at Urbana‐Champaign 205 North Mathews AveUrbana IL 61801 USA;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li> <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span> <a href="https://www.zhangqiaokeyan.com/clc/183.html" title="微生物学">微生物学 ;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> </p> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023229171.html">Thermodynamically diverse syntrophic aromatic compound catabolism</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Nobu Masaru Konishi&option=202" target="_blank" rel="nofollow" class="tuijian_auth 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