ACS ES&T Water,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 12, 2024
Microplastics
(MPs)
serve
as
unconventional
platforms
for
microorganisms
and
vectors
pollutants
pathogens
in
aquatic
ecosystems.
This
study
explored
the
dynamics
of
microbial
colonization
biofilm
formation
on
MPs,
a
key
factor
their
ecological
impact,
using
five
common
MP
types─poly(ethylene
terephthalate)
(PET),
poly(vinyl
chloride)
(PVC),
polyethylene
(PE),
polylactic
acid
(PLA),
polypropylene
(PP)─incubated
an
aquaculture
pond
128
days.
The
biomass
increased
by
173–617%
compared
with
original
samples,
especially
PP-
PE-MPs
(OD
595
nm
=
0.30
0.28,
respectively).
Driven
inherent
properties
community
structure
differed
significantly
across
types,
leading
to
varied
changes
hydrophobicity
surface
morphology.
Differences
physicochemical
cause
each
type
selectively
enrich
specific
microbes,
profoundly
influencing
degradation
potential.
Notably,
supported
rich,
mature
biofilms
conducive
carbon
cycling
development,
while
PET-MPs
attracted
more
abundant
plastic
degraders,
like
Pseudomonas.
also
highlighted
enrichment
indicating
potential
environmental
human
health
risk.
These
findings
illuminate
complex
interactions
between
characteristics
dynamics,
enhancing
understanding
MPs'
behaviors
fates
settings.
Journal of Hazardous Materials,
Journal Year:
2025,
Volume and Issue:
490, P. 137806 - 137806
Published: March 3, 2025
The
persistence
of
plastics,
particularly
polypropylene
(PP),
and
their
conversion
into
microplastics
(MPs),
specifically
PP-MPs,
have
emerged
as
serious
ecological
threats
to
soil
aquatic
environments.
In
the
present
study,
we
aimed
isolate
a
microbial
consortium
capable
degrading
PP-MPs.
results
revealed
that
three
consortia
(CPP-KKU1,
CPP-KKU2,
CPP-KKU3)
exhibited
ability
degrade
achieving
weight
losses
ranging
from
11.6
±
0.2
%
17.8
0.5
after
30
days.
Fourier
transform
infrared
(FTIR)
spectroscopy
analysis
confirmed
degradation
through
oxidation,
evidenced
by
presence
new
functional
groups
(-OH
-C=O).
particular,
CPP-KKU3
showed
highest
efficiency,
with
scanning
electron
microscopy
(SEM)
revealing
surface
cracking
treatment.
Additionally,
gas
chromatography-mass
spectrometry
(GC-MS)
identified
various
intermediate
compounds,
including
heterocyclic
aromatic
phenyl
groups,
methylthio
derivatives,
ethoxycarbonyl
indicating
complex
biochemical
processes
were
likely
mediated
enzymes.
Furthermore,
polyhydroxybutyrate
(PHB)
production
these
was
also
investigated.
result
both
CPP-KKU2
successfully
produced
PHB,
demonstrating
superior
performance
in
terms
PP-MP
PHB
production.
Metagenomic
abundant
carbohydrate-active
enzymes
(CAZymes),
glycosyl
transferases
glycoside
hydrolases,
which
are
associated
MP
digestion.
This
study
presents
promising
bioremediation
approach
addresses
plastic
waste
sustainable
bioplastic
production,
offering
potential
solution
for
environmental
pollution.
Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
12
Published: April 7, 2025
Expanded
polystyrene
(EPS)
has
caused
significant
pollution
in
marine
environments,
with
potential
EPS-degrading
bacteria
identified
on
long-term
floating
EPS
biofilms.
However,
studies
bacterial
interactions
and
consortium
reconstruction
based
in-situ
diversity
remain
limited.
Marine
wastes
of
different
sizes
were
collected
from
subtropical
coast
Xiamen
island,
subjected
to
analyses.
Co-occurrence
network
characterization
revealed
that
Rhodobacterales
Rhizobiales
play
important
roles
(PS)
degradation.
Bacterial
isolation
confirmed
Fulvimarina
pelagi
,
Pseudosulfitobacter
pseudonitzschiae
Devosia
nitrariae
Cytobacillus
kochii
oceanisediminis
as
novel
PS-degraders.
Based
their
abundance
situ
PS
degradation
activity,
a
was
constructed,
constituted
F.
P.
halotolerans
.
O.
granulosus
showed
high
capability
weight
loss
by
18.9%
45
days.
These
results
contribute
plastic
remediation
resources
recycling.
The Science of The Total Environment,
Journal Year:
2024,
Volume and Issue:
947, P. 174696 - 174696
Published: July 10, 2024
Plastic
pollution
of
the
soil
is
a
global
issue
increasing
concern,
with
far-reaching
impact
on
environment
and
human
health.
To
fully
understand
medium-
long-term
plastic
dispersal
in
environment,
it
necessary
to
define
its
interaction
residing
microbial
communities
biochemical
routes
degradation
metabolization.
However,
despite
recent
attention
this
problem,
research
has
largely
focussed
functional
potential,
failing
clearly
identify
collective
adaptation
strategies
these
communities.
Our
study
combines
genome-centric
metagenomics
metatranscriptomics
characterise
adapting
high
polyethylene
terephthalate
concentration.
The
microbiota
were
sampled
from
landfill
subject
decades-old
contamination
enriched
through
prolonged
cultivation
using
microplastics
as
only
carbon
source.
This
approach
aimed
select
microorganisms
that
best
adapt
specific
substrates.
As
result,
we
obtained
simplified
where
multiple
metabolization
pathways
are
widespread
across
abundant
rare
taxa.
Major
differences
found
terms
expression,
which
average
was
higher
planktonic
microbes
than
those
firmly
adhered
plastic,
indicating
complementary
metabolic
roles
potential
microplastic
assimilation.
Moreover,
metatranscriptomic
patterns
indicate
transcriptional
level
numerous
genes
emerging
taxa
characterised
by
marked
accumulation
genomic
variants,
supporting
hypothesis
requires
an
extensive
rewiring
energy
metabolism
thus
provides
strong
selective
pressure.
Altogether,
our
results
provide
improved
characterisation
derived
common
plastics
types
terrestrial
suggest
biotic
responses
investing
contaminated
sites
well
biotechnological
targets
for
cooperative
upcycling.
