Temporal distributions and environmental adaptations of two types of multicellular magnetotactic prokaryote in the sediments of Lake Yuehu, China.
Two morphotypes (spherical and ellipsoidal) of multicellular magnetotactic prokaryotes (MMPs) have been reported from the sediments of Lake Yuehu, China. Here, their temporal distributions and their relationships with biogeochemical parameters are studied. Samples were collected at approximately 2-week intervals from two sites (A and B) during the period September 2012 to December 2013. The abundance of MMPs was high in summer and autumn, but low in winter and spring. Furthermore, the peaks in the numbers of the two types of MMPs were sequential, with the highest concentration of the spherical MMPs occurring prior to that of the ellipsoidal MMPs. This may be related to different optimal growth temperatures for the two types. Although the two types of MMP coexisted at both sites, their numbers were different; at most times, spherical MMPs dominated at site A, whereas ellipsoidal MMPs dominated at site B. Geochemical analysis revealed that the environmental conditions at site A varied more than at site B. Compared with the widely distributed spherical MMPs, ellipsoidal MMPs seemed to prefer more stable habitats. This is the first report of the temporal distribution of ellipsoidal MMPs in sediments, suggesting that their environmental adaptations differ from those of spherical MMPs.
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.|College of Earth Science, University of Chinese Academy of Sciences, Beijing, 100864, China.
Hai-Jian
HJ
Du
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.|CNRS, Laboratoire International Associé de la Bio-Minéralisation et Nano-Structures (LIA-BioMNSL), Marseille, F-13402, France.
Yi-Ran
YR
Chen
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.|College of Earth Science, University of Chinese Academy of Sciences, Beijing, 100864, China.
Rui
R
Zhang
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.|CNRS, Laboratoire International Associé de la Bio-Minéralisation et Nano-Structures (LIA-BioMNSL), Marseille, F-13402, France.
Hong-Miao
HM
Pan
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.|CNRS, Laboratoire International Associé de la Bio-Minéralisation et Nano-Structures (LIA-BioMNSL), Marseille, F-13402, France.
Wen-Yan
WY
Zhang
College of Resources and Environment, Qingdao Agriculture University, Qingdao, 266109, China.
Ke
K
Zhou
CNRS, Laboratoire International Associé de la Bio-Minéralisation et Nano-Structures (LIA-BioMNSL), Marseille, F-13402, France.|CNRS, LCB UMR 7257, Institut de Microbiologie de la Méditerranée, Aix Marseille Université, Marseille, F-13402, France.
Long-Fei
LF
Wu
Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.|CNRS, Laboratoire International Associé de la Bio-Minéralisation et Nano-Structures (LIA-BioMNSL), Marseille, F-13402, France.
Tian
T
Xiao
D001419:Bacteria / Q000166:cytology* / Q000254:growth & development*; D058491:Bacterial Load; D018407:Bacterial Physiological Phenomena; D002681:China; D019015:Geologic Sediments / Q000382:microbiology*; D060106:Lakes / Q000382:microbiology*; D008124:Locomotion; D008280:Magnetics; D008853:Microscopy; D012621:Seasons; D013997:Time Factors