Metareview: a survey of active matter reviews
The European Physical Journal E,
Год журнала:
2025,
Номер
48(2)
Опубликована: Фев. 1, 2025
In
the
past
years,
amount
of
research
on
active
matter
has
grown
extremely
rapidly,
a
fact
that
is
reflected
in
particular
by
existence
more
than
1000
reviews
this
topic.
Moreover,
field
become
very
diverse,
ranging
from
theoretical
studies
statistical
mechanics
particles
to
applied
work
medical
applications
microrobots
and
biological
systems
artificial
swimmers.
This
makes
it
difficult
get
an
overview
over
as
whole.
Here,
we
provide
such
form
metareview
article
surveys
existing
review
articles
books
matter.
Thereby,
provides
useful
starting
point
for
finding
literature
about
specific
Язык: Английский
Flow through porous media at the percolation transition
Physical Review Research,
Год журнала:
2025,
Номер
7(1)
Опубликована: Фев. 12, 2025
We
study
low-Reynolds-number
fluid
flow
through
a
two-dimensional
porous
medium
modeled
as
Lorentz
gas.
Using
extensive
finite-element
simulations
we
fully
resolve
the
fields
for
packing
fractions
approaching
percolation
threshold.
Near
transition,
find
power-law
scaling
of
rate
versus
fraction
with
an
exponent
≈5/2,
which
was
predicted
earlier
by
mapping
macroscopic
to
discrete
network
[B.
I.
Halperin
,
].
Importantly,
observe
rounding
behavior
at
small
system
sizes,
can
be
rationalized
via
finite-size
ansatz.
Finally,
show
that
distribution
kinetic
energy
exhibits
over
several
decades
energies,
originating
from
collections
self-similar,
viscous
eddies
in
dead-end
channels.
Our
results
lay
foundation
unraveling
critical
complex
fluids
omnipresent
biological
and
geophysical
systems.
Published
American
Physical
Society
2025
Язык: Английский
Environmental matrix and moisture influence soil microbial phenotypes in a simplified porous media incubation
mSystems,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 24, 2025
ABSTRACT
Soil
moisture
and
porosity
regulate
microbial
metabolism
by
influencing
factors,
such
as
system
chemistry,
substrate
availability,
soil
connectivity.
However,
accurately
representing
the
environment
establishing
a
tractable
community
that
limits
confounding
variables
is
difficult.
Here,
we
use
reduced-complexity
consortium
grown
in
glass
bead
porous
media
amended
with
chitin
to
test
effects
of
structural
matrix
on
phenotypes.
Leveraging
metagenomes,
metatranscriptomes,
metaproteomes,
metabolomes,
saw
our
significantly
altered
phenotypes
compared
liquid
incubations,
denoting
importance
incorporating
pores
surfaces
for
understanding
soils.
These
phenotypic
shifts
were
mainly
driven
differences
expression
Streptomyces
Ensifer
,
which
included
significant
decrease
overall
degradation
between
liquid.
Our
findings
suggest
success
likely
related
its
ability
repurpose
carbon
via
glyoxylate
shunt
amidst
lack
byproducts
while
potentially
using
polyhydroxyalkanoate
granules
C
source.
We
also
identified
traits
expressed
others,
including
motility,
stress
resistance,
conservation,
influence
metabolic
profiles
observed
across
treatments.
Together,
these
results
demonstrate
incubations
promote
structure-induced
are
better
proxy
conditions
than
culture
systems.
Furthermore,
they
emphasize
encompass
not
only
multi-enzyme
pathways
involved
but
include
complex
interactions
other
members.
IMPORTANCE
critical
shaping
metabolism.
laboratory
experiments
remains
challenging
frontier.
Through
reduced
complexity
experiment
media,
reveal
predicting
from
gene-based
alone
often
falls
short
capturing
intricate
cellular
interactions.
highlight
affect
decomposition,
environmental
(i.e.,
beads)
shifting
towards
tolerance,
resource
acquisition,
increased
ultimately
invoking
unique
strategies
evident
cultures.
Moreover,
find
evidence
changes
relate
regarding
transporters,
biofilm
formation,
degradation.
Ultimately,
showcase
how
communities
can
be
informative
present
useful
alternative
cultures
studying
Язык: Английский
Bacterial Adhesion on Soft Surfaces: The Dual Role of Substrate Stiffness and Bacterial Growth Stage
Microorganisms,
Год журнала:
2025,
Номер
13(3), С. 637 - 637
Опубликована: Март 11, 2025
The
surface
adhesion
and
stiffness
of
underlying
substrates
mediate
the
geometry,
mechanics,
self-organization
expanding
bacterial
colonies.
Recent
studies
have
qualitatively
indicted
that
may
impact
attachment
accumulation,
yet
variation
in
cell-to-surface
with
substrate
remains
to
be
quantified.
Here,
by
developing
a
cell-level
force–distance
spectroscopy
(FDS)
technique
based
on
atomic
force
microscopy
(AFM),
we
simultaneously
quantify
cell–surface
reveal
stiffness-dependent
phototrophic
bacterium
Chromatium
okenii.
As
soft
substrate,
modeled
using
low-melting-point
(LMP)
agarose
pad,
was
varied
between
20
kPa
120
changing
concentrations,
observed
progressive
increase
mean
over
an
order
magnitude,
from
0.21±0.10
nN
2.42±1.16
nN.
In
contrast,
passive
polystyrene
(PS)
microparticles
comparable
dimensions
showed
no
perceptible
change
their
adhesion,
confirming
adhesive
interaction
C.
okenii
is
biological
origin.
Furthermore,
for
Escherichia
coli,
0.29±0.17
0.39±0.20
nN,
showing
weak
dependence
stiffness,
thus
suggesting
stiffness-modulated
species-specific
trait.
Finally,
quantifying
population
across
different
timescales,
reported
emergent
co-existence
strongly
adherent
sub-populations,
demonstrating
diversification
phenotypes
growth
stages.
Taken
together,
these
findings
suggest
bacteria,
depending
species
physiological
stage,
actively
modulate
response
surfaces.
While
properties,
instance,
hydrophobicity
(or
hydrophilicity),
play
key
role
mediating
attachment,
this
work
introduces
as
biophysical
parameter
could
reinforce
or
suppress
effective
interactions.
Our
results
how
bacteria
leverage
diversity
therein
functional
traits
initial
to,
colonization
of,
proliferation
during
early
stages
biofilm
development.
Язык: Английский
Biophysical Reviews: a transition in the journal
Biophysical Reviews,
Год журнала:
2024,
Номер
16(2), С. 141 - 143
Опубликована: Апрель 1, 2024
Язык: Английский
Optimal diffusion of chiral active particles with strategic reorientations
Physical review. E,
Год журнала:
2024,
Номер
110(6)
Опубликована: Дек. 17, 2024
We
investigate
the
competing
effects
of
simultaneous
presence
chirality
and
generalized
tumbles
in
dynamics
an
active
Brownian
particle.
Chiral
particles
perform
circular
motions
that
give
rise
to
slow
transport
at
late
times.
By
interrupting
these
trajectories
right
time
by
performing
a
tumble
correct
angle,
we
show
can
enhance
their
diffusion.
After
deriving
exact
expressions
for
orientational
propagator
correlations,
use
this
calculate
first
two
moments
displacement.
For
effective
diffusion
coefficient,
study
various
optimal
tumbling
strategies.
under
optimization
rate,
case
symmetrically
distributed
always
gives
enhanced
diffusion,
with
coefficient
taking
universal
value.
Next,
cases
are
considered
detail,
namely,
directional
reversal
arbitrary
but
fixed
angle.
discuss
how
asymmetric
beyond
symmetric
tumbles.
Finally,
situation
where
reorientations
realized
dynamically
finite
time.
Язык: Английский
The Molecular Profile of Soil Microbial Communities Inhabiting a Cambrian Host Rock
Microorganisms,
Год журнала:
2024,
Номер
12(3), С. 513 - 513
Опубликована: Март 2, 2024
The
process
of
soil
genesis
unfolds
as
pioneering
microbial
communities
colonize
mineral
substrates,
enriching
them
with
biomolecules
released
from
bedrock.
resultant
intricate
surface
units
emerge
a
complex
interplay
among
microbiota
and
plant
communities.
Under
these
conditions,
host
rocks
undergo
initial
weathering
through
activity,
rendering
far
pristine
challenging
the
quest
for
biomarkers
in
ancient
sedimentary
rocks.
In
addressing
this
challenge,
comprehensive
analysis
utilizing
Gas
Chromatography
Mass
Spectrometry
(GC-MS)
Time-of-Flight
Secondary
Ion
(ToF-SIMS)
was
conducted
on
520-Ma-old
Cambrian
rock.
This
investigation
revealed
diverse
molecular
assemblage
comprising
alkanols,
sterols,
fatty
acids,
glycerolipids,
wax
esters,
nitrogen-bearing
compounds.
Notably,
elevated
levels
bacterial
C16,
C18
C14
iso
anteiso
methyl-branched
well
fungal
long-chained
alcohols,
consistently
align
consortium
bacteria
fungi
accessing
organic
matter
within
soil-type
ecosystem.
prominence
lipids
alongside
maturity
indicators
denotes
derivation
heterotrophic
activity
rather
than
preservation
or
marine
sources.
Moreover,
identification
long-chain
(>C22)
n-alkanols,
even-carbon-numbered
long
chain
(>C20)
campesterol,
stigmastanol,
provides
confirmation
residue
inputs.
Furthermore,
findings
highlight
ability
contemporary
to
inhabit
rocky
substrates
actively,
requiring
strict
contamination
controls
when
evaluating
biosignatures
extraterrestrial
materials
collected.
Язык: Английский
soil plastisphere: The nexus of microplastics, bacteria, and biofilms
InterPore journal.,
Год журнала:
2024,
Номер
1(3), С. IPJ271124 - 2
Опубликована: Ноя. 27, 2024
Bacteria
are
one
of
the
oldest
life
forms
on
Earth,
dating
back
to
more
than
3.5
billion
years
ago.
They
control
global
cycling
carbon,
nitrogen,
and
oxygen.
provide
plants,
fungi
other
organisms
with
necessary
nutrients
elements.
help
us
digest
our
food,
protect
against
pathogens,
even
affect
behavior.
Microplastics,
however,
have
disrupted
bacterial
ecosystems
across
globe,
from
soil
oceans.
Microplastics
tiny
plastic
particles
formed
as
a
result
breakdown
consumer
products
waste.
Due
their
stability
persistence,
they
can
travel
long
distances
in
subsurface
environments,
ultimately
making
way
water
resources,
rivers,
In
this
journey,
interact
bacteria
micro/macro-organisms,
become
ingested
or
colonized,
act
carriers
for
contaminants
pathogens.
How
whether
adapt
these
new
microplastic-rich
open
questions
far-reaching
implications
health
planet
us.
Therefore,
there
is
an
urgent
need
improving
fundamental
understanding
interactions
microplastics
complex
environments.
commentary,
we
focus
nexus
bacteria,
biofilms,
microplastics,
also
known
“plastisphere”,
discuss
challenges
opportunities.
Язык: Английский