ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 16, 2024
Microbial
electrochemical
systems
(MESs)
can
simultaneously
treat
environmental
pollutants
and
recover
electricity,
with
research
aiming
to
enhance
efficiency
by
employing
three-dimensional
(3D)
porous
anodes
boost
microbial
enrichment.
Large
millimeter-sized
pores
are
considered
advantageous
for
3D
anode
construction,
addressing
colonization
mass
transfer
limitations.
However,
there
is
a
notable
gap
in
understanding
the
selection
impact
of
millimeter-level
pore
sizes
on
biofilm
behavior
system
performance
MESs.
This
study
investigated
1
mm,
3
5
mm.
Experimental
theoretical
analyses
show
that
while
improve
transfer,
larger
reduce
both
enriched
microorganisms
power
density.
The
mm
size
performed
best
(34.9
W/m3),
worse
than
nonporous
anode,
challenging
notion
introducing
structures
necessarily
enhances
performance.
A
principle
proposed:
ensure
first
then
choose
an
appropriate
increase
total
surface
area
optimize
provides
basis
selecting
MES
anodes.
Environmental Science & Technology Letters,
Journal Year:
2024,
Volume and Issue:
11(2), P. 106 - 113
Published: Jan. 10, 2024
Electroactive
biofilms
show
great
promise
in
bioenergy
production,
bioremediation,
wastewater
treatment,
and
bioelectronics.
However,
their
applicability
is
impeded
by
energy
dissipation
owing
to
the
electron
transfer
resistance
electroactive
biofilms.
Herein,
we
tuned
structure
of
a
Geobacter
sulfurreducens
anode
biofilm
situ
reduce
resistance.
Therein,
pili
G.
were
genetically
engineered
with
six-histidine
tags,
nickel(II)
ions
supplied
thereafter
trigger
formation
histidine:nickel
biohybrid
via
histidine–nickel
coordination
bonds.
We
reported
that
these
treatments
resulted
intertwining
from
different
cells,
which
contributed
highly
structured
increased
concentration
sites
microenvironments
biofilm.
Electrochemical
analyses
demonstrated
decreased
diffusion
as
well
interface
mass
resistance,
all
an
approximately
2.4
times
increase
current
generation.
Considering
universality
microorganisms
strong
interaction
between
histidine
tags
ions,
this
study
provides
general
method
suggests
technique
manipulate
structure,
significant
biofilm-based
technologies.
ACS ES&T Water,
Journal Year:
2023,
Volume and Issue:
3(9), P. 2835 - 2848
Published: July 26, 2023
The
osmotic
microbial
fuel
cell
(OsMFC)
is
formed
by
combining
forward
osmosis
(FO)
and
cells
(MFC).
Its
excellent
performance
undoubtedly
provided
a
new
research
direction
for
the
application
of
FO
MFCs.
However,
reverse
solute
flux
(RSF)
in
also
follows.
RSF
will
cause
series
negative
effects
such
as
loss
draw
solutions,
decrease
water
flux,
electricity
generation.
Therefore,
inhibition
very
necessary
practical
OsMFCs.
Currently,
there
are
much
related
reviews
on
but
few
studies
To
provide
some
ideas
OsMFCs,
we
focused
three
aspects:
operating
conditions,
membranes.
Existing
have
demonstrated
that
strategies
effective
OsMFC,
including
inhibitory
effect
current
generation,
conventional
inorganic
membrane
materials
orientation,
modified
But
many
more
available.
Using
reference,
pressure-assisted
temperature
control
may
be
feasible
need
to
investigated
further.
In
future,
or
utilization
can
further
improve
reactor
promote
early
Microbiome,
Journal Year:
2024,
Volume and Issue:
12(1)
Published: Aug. 1, 2024
Abstract
Background
Symbioses
between
primary
producers
and
bacteria
are
crucial
for
nutrient
exchange
that
fosters
host
growth
niche
adaptation.
Yet,
how
viruses
infect
(phages)
influence
these
bacteria-eukaryote
interactions
is
still
largely
unknown.
Here,
we
investigate
the
role
of
on
genomic
diversity
functional
adaptations
associated
with
pelagic
sargassum.
This
brown
alga
has
dramatically
increased
its
distribution
range
in
Atlantic
past
decade
predicted
to
continue
expanding,
imposing
severe
impacts
coastal
ecosystems,
economies,
human
health.
Results
We
reconstructed
73
bacterial
3963
viral
metagenome-assembled
genomes
(bMAGs
vMAGs,
respectively)
from
Sargassum
natans
VIII
surrounding
seawater.
S
.
bMAGs
were
enriched
prophages
compared
seawater
(28%
0.02%,
respectively).
Rhodobacterales
Synechococcus
bMAGs,
abundant
members
microbiome,
shared
algae
but
distinct
phages
each
environment.
Genes
related
biofilm
formation
quorum
sensing
phages,
indicating
their
potential
algal
association
hosts.
In-vitro
assays
a
community
harvested
sargassum
surface
biofilms
depleted
free
demonstrated
protected
lytic
infection
by
contain
intact
inducible
prophages.
These
form
thicker
when
growing
sargassum-supplemented
controls,
phage
induction
using
mitomycin
C
was
significant
decrease
formation.
The
induced
metagenomes
sequences
classified
as
temperate
uninduced
controls.
Conclusions
Our
data
shows
contribute
flexible
VIII-associated
bacteria.
encode
genes
symbiotic
functions,
decreases
formation,
an
essential
capacity
symbioses
alga.
results
indicate
prophage
acquisition
diversification
during
-
symbioses,
implications
growth.
Microbial Biotechnology,
Journal Year:
2024,
Volume and Issue:
17(10)
Published: Oct. 1, 2024
Bacterial
infections
represent
a
significant
global
threat
to
human
health,
leading
considerable
economic
losses
through
increased
healthcare
costs
and
reduced
productivity.
One
major
challenge
in
treating
these
is
the
presence
of
biofilms
-
structured
bacterial
communities
that
form
protective
barriers,
making
traditional
treatments
less
effective.
Additionally,
rise
antibiotic-resistant
bacteria
has
exacerbated
treatment
difficulties.
To
address
challenges,
researchers
are
developing
exploring
innovative
approaches
combat
biofilm-related
infections.
This
mini-review
highlights
recent
advancements
following
key
areas:
surface
anti-adhesion
technologies,
electricity,
photo/acoustic-active
materials,
endogenous
mimicking
agents,
drug
delivery
systems.
These
strategies
aim
prevent
biofilm
formation,
disrupt
existing
biofilms,
enhance
efficacy
antimicrobial
treatments.
Currently,
show
great
potential
for
applications
medical
fields
such
as
device
wound
associated
By
summarizing
developments,
this
provides
comprehensive
resource
seeking
advance
management
biofilm-associated
Microbial
interactions
on
membrane
surfaces
can
facilitate
biofilm
formation
and
biofouling,
which
poses
a
significant
challenge
for
pressure-driven
filtration
systems.
This
multiomics
study
investigates
the
adaptive
responses
of
bacterium-phage
under
varying
oxidative
hydraulic
stress
during
backwashing
their
biological
contributions
to
biofouling.
Oxidative
distinctly
shaped
bacteria
phage
diversity
community
composition.
Under
moderate
(300
ppm
NaClO),
was
maintained,
with
increased
antioxidant
enzyme
activities,
extracellular
polymeric
substance
(EPS)
production,
quorum
sensing
(QS)
signaling,
promoting
bacterial
resilience
formation.
In
contrast,
excessive
(600
NaClO)
reduced
diversity,
disrupted
responses,
microbial
sensitivity.
Hydraulic
predominantly
influenced
viral
co-occurrence
network
topology,
favoring
expansion
broad
host-range
phages
lysogenic
lifestyles
combined
stresses.
Phage-bacterium
interaction
analyses
highlighted
phages'
preferences
hosts
high
centrality
ecological
niches,
enhanced
resilience.
Transcriptomic
profiling
demonstrated
early
enrichment
genes
associated
energy
metabolism,
ROS
detoxification,
formation,
followed
by
stabilization
as
biofilms
matured.
Phage-encoded
auxiliary
metabolic
were
involved
in
DNA
repair,
QS,
EPS
biosynthesis,
contributing
adaptation
through
resistance
stabilization.
Overall,
these
findings
provide
mechanistic
insights
into
biofouling
dynamics
highlight
need
optimize
chlorine
dosing
prevent
suboptimal
levels
ISME Communications,
Journal Year:
2024,
Volume and Issue:
4(1)
Published: Jan. 1, 2024
Abstract
Extracellular
electron
transfer
(EET)
of
microorganisms
is
a
major
driver
the
microbial
growth
and
metabolism,
including
reactions
involved
in
cycling
C,
N,
Fe
anaerobic
environments
such
as
soils
sediments.
Understanding
mechanisms
EET,
well
knowing
which
organisms
are
EET-capable
(or
can
become
so)
fundamental
to
electromicrobiology
geomicrobiology.
In
general,
Gram-positive
bacteria
very
seldomly
perform
EET
due
their
thick
non-conductive
cell
wall.
Here,
we
report
that
Clostridium
intestinale
(C.i)
attained
EET-capability
for
ethanol
metabolism
only
after
forming
chimera
with
electroactive
Geobacter
sulfurreducens
(G.s).
Mechanism
analyses
demonstrated
was
possible
fusion
two
species
achieved.
Under
these
conditions,
pathway
C.i
integrated
by
G.s,
achieved
oxidation
subsequent
reduction
extracellular
acceptors
coculture.
Our
study
displays
new
approach
via
recruiting
an
bacterium,
suggests
previously
unanticipated
prevalence
world.
These
findings
also
provide
perspectives
understand
energetic
coupling
between
bacterial
ecology
interspecies
mutualisms.
