Culture‐independent characterization of novel psychrophilic magnetotactic cocci from Antarctic marine sediments

Abstract:

Magnetotactic bacteria (MTB) are a heterogeneous group of ubiquitous aquatic microorganisms capable of biomineralizing nano‐sized, membrane‐bound, magnetic iron‐rich mineral particles called magnetosomes. MTB are found in chemically‐stratified aquatic sediments and/or water columns with a wide range of salinities, moderate to high temperatures, and pH varying from neutral to strongly alkaline. MTB from very cold environments have not been investigated to any great degree and here we characterize MTB from the low temperature Antarctic maritime region. Sediment samples were collected at nine sampling sites within Admiralty Bay, King George Island (62°23′S 58°27′W) from 2009 to 2013. Samples from five sites contained MTB and those from two of these sites contained large number of magnetotactic cocci that were studied using electron microscopy and molecular techniques. The …

Año de publicación:

2016

Keywords:

Fuente:

google