Genomic and transcriptomic dissection of Theionarchaea in marine ecosystem

作     者：Mingwei Cai Changhai Duan Xinxu Zhang Jie Pan Yang Liu Cuijing Zhang Meng Li Mingwei Cai;Changhai Duan;Xinxu Zhang;Jie Pan;Yang Liu;Cuijing Zhang;Meng Li

作者机构：Archaeal Biology CenterShenzhen Key Laboratory of Marine Microbiome EngineeringInstitute for Advanced StudyShenzhen UniversityShenzhen 518060China SZU-HKUST Joint PhD Program in Marine Environmental ScienceShenzhen UniversityShenzhen 518060China 

出 版 物：《Science China(Life Sciences)》 (中国科学（生命科学英文版）)

年 卷 期：2022年第65卷第6期

页      面：1222-1234页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 071007[理学-遗传学] 

基　　金：supported by the National Natural Science Foundation of China(91851105,31970105,31600093,31700430 91951102) the Innovation Team Project of Universities in Guangdong Province(2020KCXTD023) the Shenzhen Science and Technology Program(JCYJ20200109105010363,JCYJ20180305163524811 and JCYJ20190808152403587) 

主　　题：Theionarchaea metagenome metatranscriptome metabolic potentials ecological roles 

摘      要：Theionarchaea is a recently described archaeal class within the *** it is widely distributed in sediment ecosystems,little is known about its metabolic potential and ecological ***,we used metagenomics and metatranscriptomics to characterize 12 theionarchaeal metagenome-assembled genomes,which were further divided into two subgroups,from coastal mangrove sediments of China and seawater columns of the Yap *** analysis revealed that apart from the canonical sulfhydrogenase,Theionarchaea harbor genes encoding heliorhodopsin,group 4[NiFe]-hydrogenase,and flagellin,in which genes for heliorhodopsin and group 4[NiFe]-hydrogenase were transcribed in mangrove ***,the theionarchaeal substrate spectrum may be broader than previously reported as revealed by metagenomics and metatranscriptomics,and the potential carbon substrates include detrital proteins,hemicellulose,ethanol,and CO_(2).The genes for organic substrate metabolism(mainly detrital protein and amino acid metabolism genes)have relatively higher transcripts in the top sediment layers in mangrove *** addition,co-occurrence analysis suggested that the degradation of these organic compounds by Theionarchaea might be processed in syntrophy with fermenters(e.g.,Chloroflexi)and ***,these observations expand the current knowledge of the metabolic potential of Theionarchaea,and shed light on the metabolic strategies and roles of these archaea in the marine ecosystems.