Complete genome analysis of bacteriochlorophyll acontaining Roseicitreum antarcticum ZS2-28^(T)reveals its adaptation to Antarctic intertidal environment  

作　　者：ZENG Yinxin YU Yong LI Huirong LUO Wei DING Haitao 

机构地区：[1]MNR Key Laboratory for Polar Science,Polar Research Institute of China,Shanghai 200136,China

出　　处：《Advances in Polar Science》2021年第1期20-27,共8页极地科学进展（英文版）

基　　金：the National Key R&D Program of China(Grant no.2018YFC1406903);the National Natural Science Foundation of China(Grant nos.91851201 and 41476171).

摘　　要：Aerobic anoxygenic phototrophic bacteria(AAPB)are photoheterotrophic prokaryotes able to use both light and dissolved organic matter as energy sources.Roseicitreum antarcticum ZS2-28^(T)was isolated from intertidal sediment in the Larsemann Hills,Princess Elizabeth Land,Antarctica,and was able to produce bacteriochlorophyll a.It is the type strain of the sole species within the genus Roseicitreum.The complete genome sequence of the bacterium was determined using Illumina HiSeq X and PacBio RSII systems.The genome of R.antarcticum ZS2-28^(T)was 4253095 bp and consisted of one chromosome and four plasmids.A number of genes related to the bacteriochlorophyll a production,photosynthetic reaction,cold adaptation,salt adaptation,ultra-violet resistance and DNA damage repairing were found in the genome.In addition to genomic islands and typeⅣsecretion systems,genes related to gene transfer agents were detected in the genome of R.antarcticum ZS2-28^(T),suggesting that this bacterium can adapt to its environment by acquiring exogenous nucleic acids.The annotated complete genome sequence provides genetic insights into the environmental adaptation and ecological function of R.antarcticum ZS2-28^(T)in Antarctic coastal area.

关 键 词：Roseicitreum complete genome ADAPTATION gene transfer strain intertidal sediment ANTARCTIC 

分 类 号：Q943[生物学—植物学]