Release the iron: does the infection of magnetotactic bacteria by phages play a role in making iron available in aquatic environments?  

作　　者：Igor TAVEIRA Dennis ABAZYLINSKI Fernanda ABREU 

机构地区：[1]Instituto de Microbiologia Paulo de Góes,Departamento de Microbiologia Geral,Universidade Federal do Rio de Janeiro,Rio de Janeiro 21941-902,Brazil [2]School of Life Sciences,University of Nevada at Las Vegas,Las Vegas 94720,USA

出　　处：《Journal of Oceanology and Limnology》2021年第6期2063-2069,共7页海洋湖沼学报（英文）

摘　　要：Magnetotactic bacteria(MTB)are ubiquitous prokaryotes that orient along magnetic field lines due to magnetosomes’biomineralization within the cell.These structures are ferrimagnetic organelles that impart a magnetic moment to the cell.To succeed in producing magnetosomes,MTB accumulate iron in(i)cytoplasm;(ⅱ)magnetosomes;and(ⅲ)nearby the organelle.It has already been estimated that a single MTB has an iron content of 10 to 100-fold higher than Escherichia coli.Phages are the most abundant entity in oceans and are known for controlling nutrient flow such as carbon and nitrogen by viral shunt and pump.The current work addresses the putative role of phages that infect MTB on the iron biogeochemical cycle.Can phage infection in MTB hosts cause a biogenic iron fertilization-like event in localized microenvironments?Are phages critical players in driving magnetosome biomineralization genes(BGs)horizontal transfer?Further investigation of those events,including frequency of occurrence,is necessary to fully comprehend MTB’s effect on iron cycling in aqueous environments.

关 键 词：horizontal gene transfer iron biogeochemical cycle magnetotactic bacteria magnetosome biomineralization genes PHAGES 

分 类 号：Q64[生物学—生物物理学]