<<

.

2

1 University

Metabolic

University

Interactions

of

Connecticut

Rd,

Laura

Groton

of

of

Denmark,

K.

Denmark,

Marine

a

Department

Baumgartner 1

Purple

Microbial

CT

Woods

06340,

Biological

BioCentrum-DTU,

[email protected]

Sulfur

Diversity

of

LKB00002Uconn.edu

Hole,

and

Marine

Bacterium

Laboratory

MA

Adam

2001

Sciences,

C.

Building

and

Martiny 2

a

Facultative

1084

301,

Shennecossett

2800

Anaerobe Lyngby,

.

.

interaction

unclear.

highly

relative

(strain

(darker)

of

presumed

surrounded

dissecting

halo Figure

marine

well

pyruvate, Truper

conduct

Purple

the

of

shake

limiting

This

as

•-

ACMOI)

1:

purple to

We

PSB

Satellite

Second,

Purple

2001).

environments

lithotrophically

1)

Sulfur

the

to

between anoxygenic

microscope,

phenomenon

and

from by

examined

tubes,

be

bacterium

appeared

(see more

several

appeared,

sulfur

succinate

PSB.

colonies

Bacteria:

However,

Sippewisset

the

methods

the

and distant

enhanced

These

photosynthesis

displaying

an

different

two

such the

as

their

(Bauld

in

was

unusual

and

(Krassilnikova

small

the

PSB

some

Overview

initial

strains.

and

as

development

satellite

interesting

Salt

primary

finally

(PSB)

et

color microbial

growth

colonies

Appendix

colonies

enhanced

strains

colonies

al.

Marsh,

colony

the

morphs 1987),

are

and

enrichment.

colonies

with

and

Introduction

have

for

and

PSB

and

throughout generally

mats

formation

Cr”?

growth.

consisted An

A), 2

appeared

sulfide

spatial

two

and

more

of

Kondratyeva,

the Unusual

been

colonies

developed

(van

Cod,

red

reasons.

some

The

metabolic

as

distribution

colonies

anaerobic

shown

that

to

Gemerden

of

to

the

the

Massachusetts. white

purple

strains

a

nearest

occur

Co-Culture

arose

tube,

white

electron

in

First,

to

bacterium

1984).

strategy appeared

all

grow

colonies

in

photolithoautotrophs

can

then

of in

disc-shaped

the

but

1993).

because

stages:

the

PSB

donor

utilize

heterotrophically

ACMOI

the

PSB

the

is

of

PSB enrichments

near that

Under

surrounded

highest

white

ACMOI

(Pfenning are

first

the

acetate,

implied

are

grew

ACMOI.

colony

common

media

the

the

colonies

dilution

was

some by

malate,

and

was that

as

a in

and

suction.

by

DNA achieved

and

media).

1.5%

three

Plating spectrometrically

supernatant

supernatant,

PSBI glucose,

of ACMOI

assessed

ACMO1) requirements

Liquid culture. the

pH

the

and

Specific

grown

tubes

liquid Appendix

be Sippewisset

were

Sample

ACMOI

component

Second,

removing

the

amplified

anaerobically

change

enriched

addition

phototrophic

Extraction

ACMOI.

agar

days

Satellite

ACMOI following

(the

cultures examined

with

Both

Further

in

Cultures

The

We or

DNA PSBI on lactate,

were

ACMOI and

source the

Shake

by

is

plates,

supernatant

of PSBI

A).

CR

the (pH-indicator,

any

were

from

strains

bacteria

ACMOI of

with

25%

of enrichment

for

growth, was Salt

light

the

of

was

was Mixed

colonies grown

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of

galactose, shake

medium the

substrates

agar

ACMOI

and

PSBI

PSB. malate,

with was

as

monoculture Enrichments

requirements a

with the in PSB

8F

interested and

extracted supernatant,

Marsh,

were

plated

plated galactose-enriched

were

media

continuous

absorbance

nine

growing

from Amplification

were and

cultures

the

in PSB

also

both

enrichments

and

Enrichment

that

plates,

A

percentages

were

liquid

given

in

and

propionate, on

maintained

optical

small

days

1495

Cape

aerobically

on

the

blue

glucose,

(including enriched

without grown also 1%

(2mM): traditional

resulted

from

various in

extracted

freshwater PSB1.

on

(predominantly CR

tube

broad-spectrum

and

were

agar

several

of at reverse

of inoculum

50%

utilized

light

Cod,

density

some

at

these growth,

in

7.6

medium

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the acetate,

malate,

were

and

either

or

(deep

added

shake and

in substrates.

and represent

agar)?

supernatant,

Metabolic

in succinate,

and

MA.

and

microbiological

0.2

the

results

questions.

product

from

ACMOI

CR CR

primers

extracting

colonies

of

isolated malate

carried

Methods

dark

(—1

550nm 0.5 anaerobically

yellow im

and

agar

satellite

3

in

tubes The

(all

each to

medium. medium

butyrate,

the

Third,

the

g)

ACMOI)

4

mL

filter-sterilized

will

conditions.

combinations,

PSBI.

the light

of

sediment preferences

ml dilution culture

was at

as

and

out

102

enrichment with

dark

Concentrated

with

from

at

of

(ACMOI)

therefore

the and

individual

55

vials

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percentage colony

well what

6.0). from the

to as

initially

seawater

dilution

formate,

and

Mixed Mo

°C

PSB,

0.1%

to

a

were

For

examine CR

in a

series,

as

containing enrichment

on

sediment

what

assess

annealing

is

standard

base,

Bio was

the

molecular formation?

However,

PSBI,

medium

5%

the

or

seawater

or

not

bromothymol enriched

of

grown

cultures colony

supernatant was

of

Ultra

see total

660

is

dark

fumarate,

is

ACMOI

POB supernatant,

of interaction see

the

(by

and

be the

the

the

it

measured

filter-sterilized

Appendix enrichments

growing

sample

nm

media

incandescent

discussed.

Clean

CR centrifugation) in

Appendix original pink

temperature.

(control)

formations

was

all metabolism

identity

phototrophic

plates analyses.

no

(predominantly

and

the in

These

(PSBI).

enrichments

medium

and CR

growth and

galactose, diluted

volume). from dark

Soil

blue

freshwater

from between

from

aerobically

shake PSBI

medium A of

‘10%

for

is

questions

A).

DNA

for

to ACMOI?

to

an known

included with

was

and

the

in

a

of

bulbs.

assess

assess

ACMOI

Further

series were

shake

PSBI

kits After

one

(see to

.

• •

and concentrations

pH7).

regained

bacteriochlorophyll transmission analysis

which

communication).

rods

Microscopic, ARB

Purple

sequenced

Genomic

sequencing.

2 Products

MI3F were grow

Initial

Cloning,

hours

then

culture, the

Figure

or

using for

are

picked

PSBI

At

clones

and

16S

bacteria Also,

The long

Sulfur

of

at

moving

internal

48

higher

that

DNA

motile

2:

Restriction

PSBI

and 37°C

MI3R

Ribosomal

rDNA

in

amplified

cocci

PSBI

hours

rapidly

electron

Spectral

PSBI

at

were

6

appeared

of

Bacterium

contain

internal

kit

random

runs

magnification

back

(Figure

and

granules

added

revealed Cells

from

at

primers.

with

and

at

a.

grown

displayed

400x

utilized

by separated

37

microscopy,

168

towards

Observations

no

granules

amplified Database

internal

ACMO1

Fragment

have

sulfide Accugenix. and

2), to

oC.

and internal

on

within

rDNA

(PSBI)

peaks

have

This

sulfide, possibly

transferred I000x.

been

PCR

ampicillin-X-gal

chemotaxis

(400-l000x),

the

are

sulfur

was

Results on

on

granules. via

PCR

was

distinct

10

Project

at

evident Length

the

from point

a observed

a The and

extracted similar hours

590,

microscope

Phylogeny

Chromatium

granules,

2%

cloned

product

cells

left

35

sulfide

of

and

to

band databases.

800,

agarose

as

4

The

with

with Polymorphism,

addition

image

of

another

methods,

have

highly the

to

with

Discussion

these

plates

right

from

was

and

patterns

sulfide

the reverse

depleted

many

purple

for

is

slide

a

the

(Jane

refractive

gel image

850 from

then

addition

single

pure

as

all ampicillin-X-Gal

clones

for

and

Invitrogen

of

for

gradients, to

sequences sulfide sulfur

were nm,

direction

48 a

which digested

Gibson,

culture is

an cultures

sulfide-starved

comparison

the

polar

from

hours

was

spheres.

and

of

all

intermediate

sent

bacteria

full

was

2mM

of are

. a

then

with

TOPA

Sequencing

moving

personal

of

sulfide-enriched

which

at

with

16S

(no

to

was

consumed.

dividing

rotation,

37°C.

plate

Accugenix

S 2

Promega amplified

internal

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rRNA

isolates

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conducted

TA

culture,

are

(as

digested

away

concentration,

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Fifty

and

and

indicative

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and

granules)

allowed

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for

clones

Hpall

under

bands.

with

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of

kit.

high

of

for to

.

shake

done

Isolation

strongly ACMOI

Figure

growth with

enhancement

utilized

as

optical

(sugars, stimulating

detail

supernatant

enhanced

culture.

PSBI apparent

PSB

Metabolic

.11.0

—o

did

.cD

4.ICD

0.

by

various

tubes

3:

ACMO1

slightly

colonies

E

below,

enhanced

enrichments

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within

removing

density

Optical

PSB

these

and

0.1

0.2

0.3

fatty

0.4

0.5

0.6

The

PSB

0

colony

Observations

and

PSBI

carbon

and

enhanced

did

characterization

was

the but

axenically

addition

substances

acids,

displayed density

_

appeared,

of

colonies

incubate

growth.

not

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(sucking)

the

time

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isolated

growth.

growth

with

with

additions

contain

and

result

of

enrichments

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of

of

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by

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were

it

while

indicating

more

from

Therefore

in

a

hinted

the

not

any

jim

piece

over study.

the

cultures

acid

were

grown

of

fatty

media

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form

easily

and

filter-sterilized

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dark.

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the

When

concentrations

strain

that

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additions

of

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also

that

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acid

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at

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the

or alone

some

measured

Light

660

mixed

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carried

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ACMOI

large

gained

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central

5

after

were

This

nm

enrichments

showed

while had

metabolic

microscopy

may

culture

colonies

after

supernatant

2

out,

experiment

enriched

more

and

colony

no

of

Days

after

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2

supernatant

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enhanced

days.

transferring

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in

from appears

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product

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in

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showed

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(microscopically,

the

Sugars

days

them.

will

were

from

the

with

various

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shake-tube.

placed

to

tubes

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greater

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(Figure

ACMO1

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phototroph.

a

observed

indicate

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Shake

discussed

to

non-motile,

in

supematant

ACMO1)

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carbon

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in

acids

over

the

degree

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cultures

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that

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This in

dark

media

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the

showed

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sources

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was

with

from

light,

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.

(

were

carbon/energy

small

presence

and

source

carbon/energy

observations

rod

formed

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2-10

The

halo

ACMOI

The

as

halo

Figure

combined and

m

around

well

in

pure

malate.

of

source.

long the

of absence

4:

was degraded Agarose

as

Glucuronic Agar

sources

Galactose

Glucose Media

Media cirowth Table

the

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culture

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1. (incu.

(incu.

of

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strain

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malate.

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acid

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aerobically

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incubated

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grew

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Table

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Figure

The

Figure

a

that

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6 during

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5a).

initially

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Note

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was

promoted

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which

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darkened

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and

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to

of

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plates

agar

utilize

could

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consistent

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and

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as

+

+ +

+

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produced

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the

gas

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as

with

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or

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earlier

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energy

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.

galactose

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Figure

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lower

Figure

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GC

is

dilutions.

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Bromothymol

6:

5a

with

contributed

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(left)

Figure

bromothymol

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the

of

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a

0.5-1% enrichments

strain

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5b).

b

(right):

to

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the

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with

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for

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show

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on

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of

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freshwater-based

measure

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in

7

decrease

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a

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tested

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A

at

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by

high

b)

during

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Shake

it

Figure

densities

pointed

salt

acidity

degradation

dilutions

6).

toward

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of

in

of

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the

of

this

a

of

in acid

.

.

trees

shows

,

PSBI.

corresponding

near

psuedoalteromonads

cytophagas,

that

using

Molecular

perform production development

metabolic

substrates.

Figure

increased

its

0

4-’

.11(0

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0. 0

(U

U) 4-’

C

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I

0

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C

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were

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the

to

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7:

Biolog

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0.00

0.03

0.06

0.09

0.12

0.15

0.18

of 0.21

neighbor-joining sent

properties

Analysis

restriction of

growth

the

chromatiaceae,

was

which

reducing

plates

properties

for

to

and

accurate

products

density

was

fermentans.

respiration

Figure

sequencing

observed

on

rhodobacters

are

were

grown

under

(Figures

fragment

galactose

of

equivalents.

also

8).

positioning.

together,

?

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various

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compared

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4

Chromatium

560

each

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and

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fatty

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analysis

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Figure

acids.

investigate

with

17

whether

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fell

products.

densities

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distinct

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numbers

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7).

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the

the

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of

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on

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the

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characterize

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Figure

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.

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Figure

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to

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the

distinct

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patterns

library

trees.

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PCR

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product

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ladder.

correspond lanes

sulfur

sequences

Figure

bacteria,

9:

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similar

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a

0.1

,

to

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clone

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in library

the

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9

library,

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as

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purple

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products.

sulfur-

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arid

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purple

that

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acteria non

.

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sequence

Figure

Phyogenetic

10:

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10

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J

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.

.

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Figure

more

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media

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11:

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0.

culture

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of

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suggested

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7

central

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of

old

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Interaction

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colonies

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substrate

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1

hypothesis,

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tiny

and

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with

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colonies

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grew

relationship.

from

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control,

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up

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the

is

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overnight

believed

was

other.

were It

.

Additionally,

the

PSB,

that

larger for

ACMOI

short-chain

PSB

produced

improved

confirming that

galactose

inspected

Figure

reduction

gas

produced

an

during

a

amounts

To

Another

12:

This

liquid

could

increase

is

test

and

microscopically

by Shake

during

hydrogen,

the

fatty

experiment

growth.

acetate

addition

of

PSB

glucose

discriminate

if

CO 2

result.

explanation

CO 2

CO 2 .

hydrogen

tubes

acid

in

degradation

culture

would

the

is

was

which

degraded

Hydrogen

by of of

Additionally,

generated

amount

was

PSB

short-chain

to

ACMOI,

added

dissolve

was

could

between

ensure

provides

could

repeated

with

of

by

incubated

of

be

has

(Figure

agar,

supematant

ACMOI

which

it

that

be

supernatant

and

a

could

Figure

the

fatty

not

that

PSB

possible

no

in

these

not

two

in

enhanced

been

13).

liquid

ACMOI

with

acids.

the

form

with

turn

12

3

produce

possibilities.

or

results

shows

gas

either

directly

metabolic

bubbles. reducing culture

enhances

media

is

bacteria

Combined

then

formed

the

that

bubbles.

could

a

added

growth

measured

N 2 /C0 2

(see

utilized,

was

equivalents

the

Only

linkage

during

the

point

superficially.

Figure

with

transferred

of

growth

growth

On

a

or

PSB.

possibly

toward

direct

the

degradation

between

but

H 2 /C0 2

the

3).

of

The

fact

that

of

one

other

PSB and

measurement

Here

PSB,

an

The

top-liquid

assimilated,

that

headspace.

could

might

ACMOI

proliferated.

excretion

hand,

is

supernatant

one

and

acid

of

generally

be

expect

agar

can

thereby

was

if

is

and

used

of

of

by

by

see

a of

from

Combined,

is

revealed

strong

this

possible from was

2001).

of

motility,

in

compound ACMOI

colonies

short-chain the

of supernatant

Figure

strictly

which the

H 2 ,

group

substrates

not

degradation

a

genus

There

Phylogenetic

it

evidence

sulfide

13:

Phylogenetic

Finally,

Both

This

tested.

are

in

is

fermentations

vary

phototrophic, a

at

belonging

Optical

and

reasonable

an

highly

these

or

low

fatty

able

acetate

is

is

significantly

Cytophaga.

in

attempt

relative

rich

it consistent

a

strong

are

Additionally,

densities

length

that

has

constant

to

density

acid.

of

results

motile

salt

possibly

cleave

agar

to

data

analysis

and

ACMOI

been

cell to

evidence

to

the

marsh

all

depending

products.

rod

of

indicate

regenerate

to

hydrogen

generated

say

of

enhanced

with

characteristic

Cytophagas

densities

number

group

PSBI

reported

3-glycosidic

PSBI.

ACMOI.

with

transferred

members

belongs

that

based

in

the

for

California.

grown

internal

Chromatium.

that

at

Based

observations

of

on

The

transfer

can

that

may

from

growth

on the

least

PSBI

This

Conclusions

to

growth

PSBI

with

from

are

a

be

bond,

presence

of between

the

satellite

hydrogen

influence

on

sulfur

clone

full-length

a

indicates

Chromatium

13 known

used

nitrogen

was

Agar

of

where

soluble

this

molecular

belong

Cytophaga.

conditions

a grow

Morphological

granules

library

of

metabolic

added

group

growth

formation.

ACMO1

degradations

of

to

ACMOI,

as

this

one

or

to aerobic

compound

that

168

the

be

well

hydrogen

the

and

and

have

phenomenon.

would

to

(Pfennig

small

by

fermentation

(pleomorphic)

a

and

rDNA

and

shake

Chromatiaceae.

short-chain

product

chemical

PSB

16S

phenotypic

even

as

PSBI

appeared

bacteriochlorophyll-a

expect

rods,

PSB.

examination

well

sequence and

is

is

sequencing

and

tubes

and

though

commonly

involved,

generated

only

with

anaerobic,

that

gradient

Since

either

a

Truper

product

fatty

with

in

data,

(Reichenbach

low

or

formed

possess

gliding

clone

placed

without

the

concentration one

of

acids

presumably

a

showed

observed

there

2001).

of dilution

by

PSBI

enhances

and

satellite

libraries

or

a

motility

ACMO1

gliding

ACMOI

are

acetate.

both

is

some

that

an

of

in

of a

.

and

Carrie

Diversity

analysis

bacterium.

both

cultures

H 2

Enrichments compounds

potentially

both) surrounding

either

points growth

or

Louie

cultures

CO 2

of

Harwood,

GC

Continued

towards

We

of

to

these

of

2001

Kerr.

PSBI.

is or

be

examine

would

PSBI

are

a

being

of

HPLC

on

identified

for

white

compounds

either

ACMOI

created

various

Bianca

would

their like

examination

It

produced,

was

are

the

colony

to

hydrogen

help

with

for

needed

products

definitively

Brahamsha,

acknowledge

substrates

by

not

and

gas

ACMOI

of

and

HPLC

possible

and

ACMOI

of

production/identification

is

or

for

support,

Acknowledgements

this

and

dependent

labeled

a

and

identify

a

would

and

short-chain

John

conclusive to

phenomenon

Future

their

all

is

GC

directly

exchanged

therefore

of

particularly

14

galactose

further

Waterbury,

utilization.

it

the

as

as

Work

of

well

faculty

identify

the

a

fatty

answer.

clarify

purple

generated

as

would

density

with

could

Jane

acid.

Also,

some

Dan

and

the

their

analysis

PSBI.

sulfur-

The

focus

Gibson,

be

students

compound

Buckley,

of

Direct

growth

wet

metabolism,

by

followed

both

formation

or

mainly

The

the

chemistry

would

measurements

purple

Alfred

strains.

rate

gradient

of

Jochen

compounds

through

but

Microbial

on

identify

experiments

of

Spoorman,

non-sulfur

and

what

evidence

analysis.

PSB

Mueller,

of

molecular

both

whether

one

colonies

could

with

(or for

0

van

Reichenbach

Pfennig

Krassilnikova

Bauld

Gemerden

Springer-Verlag. J,

Online.

526-528.

belonging 339.

vinosum

N

Favinger

and

H.

EN,

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H.

from

to

2001.

JL,

Kondratyeva

1993.

the

Hamelin

Madigan

HG.

genus

http:Iink-springer-ny.com:6635

The

Microbial

2001.

Order

Pool,

Ectothiorhodospira

MT,

http:link-springer-ny.com:6635

EN.

The

Cytophagales.

mats:

Shark Gest

Literature

1984.

Family

H.

15

a

Bay,

joint

Growth

1987.

Chromatiaceae.

Cited

Australia.

venture.

in

In:

of

Obligately

the

The

different

dark.

Mar.

Curr.

Prokaryotes

Mikrobiologiya

halophilic

Geol.

purple

in:

Microbiol.

The

113:

bacterial

Prokaryotes

Online.

Chromatium

3-25.

14(6):

53(3):

species 335- Appendix A: PS Medium, shake instructions, fw and sw malate plates

.

16

.

After

-L—

1.

(partial) composition,

light Parameters obtain

In

Light Trace Final

Anoxygenic

Na 2 S9H 2 O

NaHCO 3

Enrichment

NHCI 12

KC1

KH 2 PO 4

CaCI 2 2H 2 O

NaC1 Media

“berries”, are

Subsamples

selectively well

higher

values

intensities.

up

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environmental This

sulfide,

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quality. to

pH

source as

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growth

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(per

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sulfur

light

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sol.

enrich

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liter) purple

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the

intensities.

from

variety

purple

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bacteria

sol.

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contrast,

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samples. formation

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pH

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light

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infrared

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to

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different or

from

electron

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or

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preferentially selectively

bacteria

CL:

between

17

20g

below

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0.25

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of

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mM

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wavelength

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g

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as

sources

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the

and

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phylogenetically

range

ml these

sand 7.0,

conditions

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green

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high

add sulfide

able

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bacteria

light

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-

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sterile

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based

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