Cultivable magnetotactic bacteria(MTB) in laboratory can provide sufficient samples for molecular microbiological and magnetic studies.However,a cold-stored MTB strain,such as Magnetospirillum magneticum AMB-1,often loses its ability to synthesize magnetosomes and consequently fails to sense the external magnetic field.It is therefore important to quickly recover vigorous bacteria cells that highly capable of magnetosome producing.In this study,a modified capillary magnetic separation system was designed to recover a deteriorating strain of Magnetospirillum magneticum AMB-1 that long-term cold-stored in a refrigerator.The results show that all cells obtained after a 3-cycle treatment were vigorous and had the ability to produce magnetosomes.Moreover,the 3rd-cycle recovered cells were able to form more magnetosome crystals.Compared with the colony formation method,this new method is time-saving,easily operated,and more efficient for recovering vigorous MTB cells.
Magnetostratigraphic dating of the fluvio-lacustrine sequence in the Nihewan Basin,North China,has permitted t...
Chenglong Deng~*,Rixiang Zhu,Rui Zhang,Hong Ao,Yongxin Pan Paleomagnetism and Geochronology Laboratory(SKL-LE),Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China
The red soil sequences in southern and southeastern China provide important terrestrial archives of palaeoclim...
Caicai Liu,~(1,2) Xinmin Xu,~3 Baoyin Yuan~1 and Chenglong Deng~1 1 Paleomagnetism and Geochronology Laboratory(SKL-LE),Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China. E-mail:cldeng@mail.iggcas.ac.cn 2 Graduate School of the Chinese Academy of Sciences,Beijing 100039,China 3 Zhejiang Province Institute of Cultural Relics,Hangzhou 310014,China
The magnetic properties of magnetosome magnetite are of interdisciplinary interest because magnetosomes are po...
LI JinHua~(1,2,3),PAN YongXin~(1,3*),LIU QingSong~(3,4),QIN HuaFeng~4,DENG ChengLong~4, CHE RenChao~5 & YANG XinAn~5 1 Key Laboratory of the Earth’s Deep Interior,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China
[1]Closely spaced paleomagnetic and mineral magnetic studies were conducted on the Baicaoyuan(BCY) loess-paleo...
Chenglong Deng Paleomagnetism and Geochronology Laboratory(SKL-LE),Institute of Geology and Geophysics,Chinese Academy of Sciences,P.O.Box 9825,19 Beituchengxi Road,Beijing 100029,China
