Frontiers in Environmental Science,
Journal Year:
2024,
Volume and Issue:
12
Published: Sept. 2, 2024
Microplastics
(MPs)
are
colonized
by
biofilm-forming
microbes.
Biodegradable
plastics,
popular
replacements
for
traditional
still
have
unknown
biofilm
formation
characteristics.
We
conducted
a
60-day
indoor
experiment,
where
sediment
was
exposed
to
MPs
(polypropylene,
PP),
biodegradable
(polylactic
acid,
PLA),
and
glass
beads
(GLASS).
The
microbial
communities
in
the
MPs-biofilm
were
analyzed
using
high-throughput
sequencing.
Results
indicated
that
Proteobacteria
dominant
phylum
on
all
substrates,
followed
Actinobacteria,
Firmicutes.
At
genus
level,
majority
of
microorganisms
colonizing
PP
possessed
nitrification
denitrification
capabilities,
while
bacteria
PLA
capable
degrading
lignin,
cellulose
carbon
metabolism.
Sphingomonas
,
promising
microplastics,
particularly
discovered
biofilm,
meanwhile,
bacterial
colonization
indirectly
increased
potential
human
transmission
pathogens.
Redundancy
analysis
revealed
pH
moisture
significantly
affected
communities.
Pearson
correlation
heatmap
abundance
genera
two
biofilms
is
negatively
correlated
with
physicochemical
parameters
(pH,
moisture,
TN,
TP),
except
salinity.
associated
exhibited
distinct
differences
caused
combined
effects
changes
properties
different
material
substrates.
This
study
provides
further
evidence
significant
selective
features
these
when
same
source
community,
offering
insights
into
exploration
degradation.
Sustainability,
Journal Year:
2024,
Volume and Issue:
16(5), P. 2163 - 2163
Published: March 5, 2024
The
increasing
number
of
plastic
particles
in
the
environment
gives
rise
to
a
unique
ecological
niche
called
plastisphere,
which
is
characterized
by
dynamic
assemblage
microorganisms
comprising
autotrophs,
heterotrophs,
predators,
and
pathogens.
This
paper
reviews
formation,
characteristics,
factors
influencing
terrestrial
aquatic
plastisphere.
plastisphere
forms
when
hitchhiking
microorganisms,
often
bacteria,
adhere
surfaces
alter
surface
properties
for
subsequent
colonization
increasingly
tightly
clinging
microorganisms.
not
as
mobile
defined
characteristics
soil
anchoring
it.
on
are
dominant
surroundings,
particularly
those
phyla
Proteobacteria,
Actinobacteria,
Bacteroidota,
Firmicutes,
Chloroflexi,
Acidobacteria,
Cyanobacteria,
Ascomycota,
Basidiomycota,
Chytridiomycota,
Ciliophora,
Ochrophyta,
Chlorophyta.
However,
compositions
microbial
species
different
vary
widely
they
change
with
time,
properties,
biotic
abiotic
environmental
factors.
Temporal
changes
due
succession.
Plastic
type,
size,
color,
degree
aging,
chemical
leaching,
also
affect
composition
Biotic
ambient
interspecies
interactions,
together
ones,
including
pH,
temperature,
nutrient
availability,
salinity,
light,
significantly
shape
review
provides
insight
into
biodiversity
its
roles
spreading
pathogens
degrading
plastics.
The
scale
of
microplastic
pollution
in
river
sediments
is
gradually
being
elucidated
through
an
increasing
number
large-scale
studies.
Nevertheless,
distribution
within
a
riverbed
–
crucial
aspect
for
quantification
remains
poorly
understood.
Here
we
evaluate
the
meandering
River
Lys,
Belgium,
how
concentration
varies
between
different
sedimentary
environments
riverbed.
We
find
that
abundance
about
order
magnitude
higher
towards
riverbanks
compared
to
thalweg,
corresponding
with
hydrodynamics.
Moreover,
organic-matter
and
mud
content
are
robust
predictors
concentrations,
apart
from
outer
bends,
where
erosion
into
organic-rich,
muddy
floodplain
inhibits
deposition.
These
results
increase
our
understanding
at
small
scale.
They
element
guide
future
sampling
efforts
across
diverse
systems,
paving
way
normalization
better
microplastics
trapped
by
other
aquatic
environments.
Microplastic
deposition
rivers
near
banks,
well
correlated
organic
matter
content,
according
direct
measurements
campaign
Belgium.
