نتایج جستجو برای: magnetotactic bacteria

تعداد نتایج: 180391  

Journal: :Journal of the Visualization Society of Japan 2007

2010
MARTHA R. McCARTNEY ULYSSES LINS MARCOS FARINA PETER R. BUSECK RICHARD B. FRANKEL Paulo de Góes

A brackish lagoon at Itaipu, Brazil, contains magnetotactic bacteria with unusually large magnetite magnetosomes (lengths 100-200 nm). The micromagnetic structures of the magnetosomes from two different coccoid organisms from the lagoon have been determinedby electron holography.The results are consistentwith single-magnetic-domain structure in the elongated magnetosomes from one organism and m...

Journal: :Journal Of Geophysical Research: Biogeosciences 2021

Magnetotactic bacteria (MTB) are a group of prokaryotes that generally live dominantly at or just below the oxic-anoxic transition zone (OATZ) in diverse aquatic environments. They biomineralize intracellular magnetic nanocrystals magnetite (Fe3O4) or/and greigite (Fe3S4) each enveloped by bilayer membrane, called magnetosome, and often organized into chain chains. Here, we identify new magneto...

2010
Francis Bitter

Magnetotactic bacteria are various species of aquatic micro-organisms that orient and swim along magnetic field lines (Blakemore 1975, 1982; Blakemore & Frankel 1981; Moench & Konetzka 1978). All magnetotactic cells examined to date by electron microscopy contain iron-rich, electron-opaque particles (Balkwill et ale 1980; Towe & Moench 1981). In several species of magnetotactic bacteria, and po...

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