FN Archimer Export Format
PT J
TI Ultrastructure and distribution of kleptoplasts in benthic foraminifera from shallow-water (photic) habitats
BT 
AF JAUFFRAIS, Thierry
   LEKIEFFRE, Charlotte
   KOHO, Karoliina A.
   TSUCHIYA, Masashi
   SCHWEIZER, Magali
   BERNHARD, Joan M.
   MEIBOM, Anders
   GESLIN, Emmanuelle
AS 1:1;2:2;3:3;4:4;5:1;6:5;7:2,6;8:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Univ Angers, UMR CNRS LPG BIAF 6112, Bioindicateurs Actuels & Fossiles, 2 Blvd Lavoisier, F-49045 Angers 1, France.
   Ecole Polytech Fed Lausanne, Sch Architecture Civil & Environm Engn ENAC, Lab Biol Geochem, CH-1015 Lausanne, Switzerland.
   Univ Helsinki, Dept Environm Sci, Viikinkaari 1, Helsinki, Finland.
   Japan Agcy Marine Earth Sci & Technol, Dept Marine Biodivers Res, 2-15 Natsushima Cho, Yokosuka, Kanagawa, Japan.
   Woods Hole Oceanog Inst, Dept Geol & Geophys, Woods Hole, MA 02543 USA.
   Univ Lausanne, Inst Earth Sci, Ctr Adv Surface Anal, Lausanne, Switzerland.
C2 UNIV ANGERS, FRANCE
   ECOLE POLYTECH FED LAUSANNE, SWITZERLAND
   UNIV HELSINKI, FINLAND
   JAMSTEC, JAPAN
   WHOI, USA
   UNIV LAUSANNE, SWITZERLAND
IF 2.663
TC 34
UR https://archimer.ifremer.fr/doc/00457/56889/91620.pdf
LA English
DT Article
DE ;Kleptoplasty;Probst;Chloroplast;TEM;Transmission electron microscope
AB cAssimilation, sequestration and maintenance of foreign chlbroplasts made an organism is termed "chloroplast sequestration" or "kleptoplasty". This phenomenon is known in certain benthic foraminifera, in which such kleptoplasts can be found both intact and functional, but with different retention times depending on foraminiferal species. In the present study, seven species of benthic foraminifera (Haynesina germanica, Elphidium williamsoni, E. selseyense, E. oceanense, E. aff. E. dispirit, Planoglabratella opercularis and Ammonia sp.) were collected from shallow-water benthic habitats and examined with the transmission electron microscope (TEM) for cellular ultrastructure to ascertain attributes of kleptoplasts. Results indicate that all these foraminiferal taxa actively obtain kleptoplasts but organized them differently within their endoplasm. In some species, the kleptoplasts were evenly distributed throughout the endoplasm (e.g., H. germanica, E. oceanense, Ammonia sp.), whereas other species consistently had plastids distributed close to the external cell membrane (e.g., Elphidium williamsoni, E. selseyense, P. opercularis). Chloroplast degradation also seemed to differ between species, as many degraded plastids were found in Ammonia sp. and E. oceanense compared to other investigated species. Digestion ability, along with different feeding and sequestration strategies may explain the differences in retention time between taxa. Additionally, the organization of the sequestered plastids within the endoplasm may also suggest behavioral strategies to expose and/or protect the sequestered plastids to/from light and/or to favor gas and/or nutrient exchange with their surrounding habitats. 
PY 2018
PD JAN
SO Marine Micropaleontology
SN 0377-8398
PU Elsevier Science Bv
VL 138
UT 000423006500004
BP 46
EP 62
DI 10.1016/j.marmicro.2017.10.003
ID 56889
ER

EF