Water,
Год журнала:
2024,
Номер
16(2), С. 348 - 348
Опубликована: Янв. 20, 2024
Plastic
debris
is
a
growing
threat
in
freshwater
ecosystems
and
transport
models
predict
that
many
plastics
will
sink
to
the
benthos.
Among
most
common
found
Laurentian
Great
Lakes
sediments
are
polyethylene
terephthalate
(especially
fibers;
PET),
polyvinylchloride
(particles;
PVC),
styrene-butadiene
rubber
resulting
from
tire
wear
(“crumb
rubber”;
SBR).
These
materials
vary
substantially
physical
chemical
properties,
their
impacts
on
benthic
biogeochemistry
microbial
community
structure
function
largely
unknown.
We
used
microcosm
approach
evaluate
impact
of
these
three
benthic-pelagic
coupling,
sediment
using
Irondequoit
Bay,
major
embayment
Lake
Ontario
Rochester,
New
York,
USA.
Benthic
metabolism
nitrogen
phosphorous
cycling
were
all
uniquely
impacted
by
different
polymers.
PET
fibers
PVC
particles
demonstrated
unique
effects,
with
decreased
ecosystem
containing
greater
nutrient
uptake
PVC.
Microbial
diversity
was
reduced
treatments
plastic,
but
SBR
had
substantial
function,
increasing
relative
importance
metabolic
pathways
such
as
hydrocarbon
degradation
sulfur
metabolism.
Our
results
suggest
individual
polymers
have
benthos,
divergent
implications
for
function.
This
provides
deeper
insight
into
myriad
ways
plastic
pollution
may
aquatic
help
inform
risk
assessment
policy
interventions
highlighting
which
pose
greatest
risk.
TrAC Trends in Analytical Chemistry,
Год журнала:
2024,
Номер
174, С. 117667 - 117667
Опубликована: Март 25, 2024
Microplastics
(MPs),
miniscule
plastic
particles
measuring
less
than
5
mm
in
size,
have
become
a
concern
terrestrial
ecosystems,
with
primarily
agricultural
and
wetland
soils
being
the
highest
loadings.
The
adverse
effect
of
MPs
might
lead
to
changes
physicochemical
biological
characteristics
soil
including
properties,
microbial
communities,
plants,
as
well
potential
or
affirmed
correlations
among
them.
Therefore,
understanding
risks
effects
MPs,
particularly
within
soil-plant-microbe
context
is
challenging
subject
substantial
scientific
inquiry.
This
comprehensive
review
focused
on
rhizosphere
plant-microbe
symbiotic
relationships,
implications
for
plant
growth
ecosystem-level
nutrient
fluxes.
alter
community
composition,
enzymatic
activities
rhizosphere,
influencing
availability
uptake
by
plants.
These
can
disrupt
interactions,
such
mycorrhizal
associations
nitrogen-fixing
symbioses,
ultimately
impacting
cycling
nutrients
ecosystems.
Furthermore,
we
elaborate
relationships
carrying
Future
research
directions
solutions
microplastics
menace
acknowledging
combined
other
contaminants,
advanced
technologies
identification
quantification,
engineering
remediation.
knowledge
MPs-induced
impacts
interactions
essential
generate
mitigating
actions
environmental
management
conservation.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
271, С. 115935 - 115935
Опубликована: Янв. 10, 2024
The
accumulation
of
microplastics
in
agricultural
soil
brings
unexpected
adverse
effects
on
crop
growth
and
quality,
which
is
threatening
the
sustainability
agriculture.
Biochar
an
emerging
amendment
material
interest
as
it
can
remediate
pollutants.
However,
mechanisms
underlying
biochar
alleviated
toxic
crops
were
largely
unknown.
Using
a
common
economic
crop,
peanut
targeted
species,
present
study
evaluated
plant
physiologica
molecular
response
rhizosphere
microbiome
when
facing
microplastic
contamination
amendment.
Transcriptome
analyses
conducted
root
treated
with
CK
(no
no
addition),
MP
(1.5%
polystyrene
addition)
MB
microplastic+2%
shell
addition).
results
indicated
that
had
inhibitory
development
bacterial
diversity
function.
application
could
significantly
promote
expressions
key
genes
associated
antioxidant
activities,
lignin
synthesis,
nitrogen
transport
energy
metabolism
to
alleviate
reactive
oxygen
species
stress,
structure
damage,
nutrient
limitation,
inhibition
induced
by
root.
In
addition,
showed
restore
richness
microbial
communities
inhibited
availability
regulating
abundance
cycling-related
organic
matter
decomposition-related
communities.
Consequently,
enhance
promoting
oxidative
stress
resistance,
benefit
microecological
environment
for
development,
thereby
improved
plant-soil
system
health
microplastic-contaminated
agroecosystem.
Environment International,
Год журнала:
2024,
Номер
190, С. 108781 - 108781
Опубликована: Май 28, 2024
As
an
exogenous
carbon
input,
microplastics
(MPs),
especially
biodegradable
MPs,
may
significantly
disrupt
soil
microbial
communities
and
element
cycling
(CNPS
cycling),
but
few
studies
have
focused
on
this.
Here,
we
assessing
the
effects
of
conventional
low-density
polyethylene
(LDPE),
polybutylene
adipate
terephthalate
(PBAT),
polylactic
acid
(PLA)
MPs
rhizosphere
CNPS
in
a
soil-soybean
system.
The
results
showed
that
PBAT-MPs
PLA-MPs
were
more
detrimental
to
soybean
growth
than
LDPE-MPs,
resulting
reduction
shoot
nitrogen
(14.05%
11.84%)
biomass
(33.80%
28.09%)
at
podding
stage.
In
addition,
dissolved
organic
(DOC)
increased
by
20.91%
66.59%,
while
nitrate
(NO
Global Change Biology,
Год журнала:
2024,
Номер
30(7)
Опубликована: Июль 1, 2024
Abstract
Microplastic
(MP)
pollution
likely
affects
global
soil
carbon
(C)
dynamics,
yet
it
remains
uncertain
how
and
to
what
extent
MP
influences
respiration.
Here,
we
report
on
a
meta‐analysis
determine
the
effects
of
microbiome
CO
2
emission.
We
found
that
significantly
increased
contents
organic
C
(SOC)
(21%)
dissolved
(DOC)
(12%),
activity
fluorescein
diacetate
hydrolase
(FDAse)
(10%),
microbial
biomass
(17%),
but
led
decrease
in
diversity
(3%).
In
particular,
increases
components
further
promote
emission
(25%)
from
soil,
with
much
higher
effect
MPs
these
emissions
than
biomass.
The
could
be
attributed
opposite
vs.
diversity,
as
accumulation
recruited
some
functionally
important
bacteria
provided
additional
substrates
for
specific
heterotrophic
microorganisms,
while
inhibiting
growth
autotrophic
taxa
(e.g.,
Chloroflexi
,
Cyanobacteria
).
This
study
reveals
can
increase
by
causing
shifts
microbiome.
These
results
underscore
potential
importance
plastic
terrestrial
fluxes,
thus
climate
feedbacks.
