Both
NPs
and
PCBs
are
emerging
contaminants
widely
distributed
in
the
environment,
it
is
worth
exploring
whether
combination
of
two
causes
serious
pollution
harm.
Therefore,
we
studied
effects
PS-NPs
PCB-44
alone
together
after
96
h
21
d
exposure
to
C.
pyrenoidosa.
The
results
showed
that
affected
cell
cycle
pyrenoidosa
inhibited
its
normal
growth.
Physiologically,
increased
relative
conductivity
algal
solution,
decreased
surface
hydrophobicity
cells,
reduced
synthesis
chlorophyll
a
b.
Biochemically,
induced
oxidative
stress
with
significant
changes
enzymatic
activities
SOD
CAT
MDA
content.
Moreover,
expression
photosynthesis-related
genes
(psbA,
rbcL,
rbcS)
all
responded,
negatively
affecting
photosynthesis.
In
particular,
toxic
were
observed
single
co-exposure
PCB-44,
similar
trends
acute
chronic
experiments.
Taken
together,
caused
negative
on
growth
physiological
biochemistry
These
provide
scientific
information
further
explore
aquatic
organisms
ecosystems.
Toxics,
Год журнала:
2025,
Номер
13(5), С. 374 - 374
Опубликована: Май 5, 2025
Mussels
are
highly
efficient
filter
feeders,
playing
a
crucial
role
in
managing
eutrophication
and
assessing
pollution.
Although
research
on
nanoplastic
(NP)
toxicity
marine
organisms
is
expanding,
studies
freshwater
species
remain
limited
despite
ecosystems
being
disproportionately
biodiverse
vulnerable
to
pollutants.
Here,
we
quantified
the
effects
of
polystyrene
nanoplastics
(PS-NPs,
50
nm)
at
concentrations
0,
2,
20,
200
μg/L
different
growth
stages
mussel
Cristaria
plicata.
After
45-day
exposure,
PS-NPs
≥
20
damaged
intestinal
epithelial
cilia
both
age
groups.
Exposure
significantly
increased
malondialdehyde
levels
decreased
superoxide
dismutase
activity
groups,
with
adults
showing
significant
rise
total
protein
content
juveniles
exhibiting
marked
increases
respiratory
ammonia
excretion
rates.
Additionally,
PS-NP
exposure
altered
relative
abundance
gut
microbial
phyla,
including
Proteobacteria,
Firmicutes,
Verrucomicrobiota,
Bacteroidota,
Fusobacteriota
also
affected
adults.
Juveniles
were
more
sensitive
physiological
changes,
whereas
exhibited
greater
microbiota
shifts
response
exposure.
Therefore,
this
study
provides
new
insights
into
stage-specific
integrity
biochemical
health
mussels,
underscoring
need
for
targeted
management
strategies
protect
ecosystems.
Both
NPs
and
PCBs
are
emerging
contaminants
widely
distributed
in
the
environment,
it
is
worth
exploring
whether
combination
of
two
causes
serious
pollution
harm.
Therefore,
we
studied
effects
PS-NPs
PCB-44
alone
together
after
96
h
21
d
exposure
to
C.
pyrenoidosa.
The
results
showed
that
affected
cell
cycle
pyrenoidosa
inhibited
its
normal
growth.
Physiologically,
increased
relative
conductivity
algal
solution,
decreased
surface
hydrophobicity
cells,
reduced
synthesis
chlorophyll
a
b.
Biochemically,
induced
oxidative
stress
with
significant
changes
enzymatic
activities
SOD
CAT
MDA
content.
Moreover,
expression
photosynthesis-related
genes
(psbA,
rbcL,
rbcS)
all
responded,
negatively
affecting
photosynthesis.
In
particular,
toxic
were
observed
single
co-exposure
PCB-44,
similar
trends
acute
chronic
experiments.
Taken
together,
caused
negative
on
growth
physiological
biochemistry
These
provide
scientific
information
further
explore
aquatic
organisms
ecosystems.
