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drosera-capensis-capensis
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8/12/2019 10 ME Microcables
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Pfeiffer et al. (2012) Nature doi:10.1038/nature11586
!"#$%&'($! #$ %&$' (&)( *+,)-./($0% 1)2(.3+) 2)/ (3)/%4$3( .,.2(3$/%$5.3 2./(+-.(.3 6+%()/2.%7
)$&*+,- +($/('$0! 8+23$.,.2(3$6.%9 8$,.20,)3 (.2&/+:0.%9 ;($-+2
;
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Bacterial Nanowires
A+,,+ ,+D. %(302(03.% *$3 .,.2(3$/ (3)/%4$3(7
E)5. 1../ $1%.35.6 +/ -)/= -.(), 3.602+/B 1)2(.3+)7 F./.3),,= %=/(&.(+G.6 +/ 2$/6+(+$/% $* )22.4($3 ,+-+()(+$/7
@H)-4,.%! #$%&'()$* +,,-. /0$1'2$33' %2$45$2+4+ >),%$ +/
2=)/$1)2(.3+) )/6 *.3-./(+/B 1)2(.3+)?
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Gorby et al., (2006) PNAS 103(30): 1135811363
Shewanella oneidensis under oxygen limitingconditions (electron acceptor)
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Gorby et al., (2006) PNAS 103(30): 1135811363
Shewanella oneidensis
O2limitation No O2limitation
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Gorby et al., (2006) PNAS 103(30): 1135811363
Shewanella oneidensis in the presenceof ferrihydrite (reduced to magnetite)
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Gorby et al., (2006) PNAS 103(30): 1135811363
Synechocystis PCC 6803
Methanothermobacterthermoautotrophicus
Pelotomaculumthermopropionicum
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7&+3'% 8+/%$ )'%/+-%+49 :78);
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Pfeiffer et al. (2012) Nature doi:10.1038/nature11586
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10
Study Area
Pfeiffer et al. (2012) Nature doi:10.1038/nature11586
Marine sediment in Aarhus bay (Denmark)
Laboratory experiments
Background: Incubated sediment samples in which no match was found
between electrochemical data and physicochemical gradients andzonation of
potential metabolisms.
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H2S
Reduction of
oxygen at the
surface of the
sediment
Oxidation of H2S at
deep layers in a
completely anoxic
environment
Pic de pH(consum
Filaments density:
117 m cm3
Cell length: 3 m
Filament: 4x107
cel/cm3
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8$,.20,)3 I6./(+*+2)(+$/ $* (&. $1%.35.6 *+,)-./(%
Deltaproteobacteria
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O2
H2S
#&. %.6+-./( +% 20( +/($ ('$ 4+.2.%
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O2
H2S
8+B3)(+$/ $* *+,)-./(% +/ (&. 5.3(+2), )H+% +% ,+-+(.6
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Glass, non-conducting
microspheres
J&)( +* .,.2(3+2 2$/602(+5+(= +% 13$D./K
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8+23$%2$4= $1%.35)(+$/% $* *+,)-./(%
=
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L)2(.3+), 3'%/+2)1,.% $4./M04 /.' :0.%(+$/% ($ 1. )/%'.3.6!
E$' +% ./.3B= 2$/%.35.6 )/6 ),,$2)(.6 )-$/B 2.,,%K
J&)( +% (&.+3 6+5.3%+(= >B./.(+2 )/6 -.()1$,+2?K
J&)( +% (&. -$,.20,)3 1)%+% *$3 .,.2(3$/ (3)/%4$3(K
;3. (&.= '+6.%43.)6K
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Pfeiffer et al. (2012) Nature doi:10.1038/nature11586