Ecology and physiology of planktonic archaea

68 Pages·2014·11.55 MB·English

by  Alyson Santoro

Ecology and physiology of planktonic archaea

Alyson Santoro

Horn Point Laboratory

University of Maryland Center for Environmental Science

C-MORE Microbial Oceanography Course 2014
Talk outline

Who are the marine archaea?

Tracking down the MGI archaea

Taming wild archaea to investigate their
physiology

The elusive Euryarchaeota
Who are the marine archaea?
Archaea

Bacteria

Eucarya

N.R. Pace 1997
N.R. Pace 1997

Mesophilic archaea are the most abundant cells in the deep ocean
(and possibly the planet).

5

10

%

)
m D
A
(
100

P
h
I
t
p c
o
e
u
D
n
t

1000

Bacteria

5000

5

10

%

) D
m
A
( 100

P
h I

t c
p o
e u
D n
t

1000

Archaea

5000

modified from Karner et al., Nature, 2001
Contrasting distribution of MGI and MGI

I
Mincer et al. 2007
MGI archaea: Tracking down the most
abundant cells in the deep ocean