Nanomaterials,
Год журнала:
2024,
Номер
15(1), С. 17 - 17
Опубликована: Дек. 26, 2024
Microplastics
(MPs)
are
emerging
pollutants
of
global
concern,
while
heavy
metals
such
as
copper
ions
(Cu2+)
longstanding
environmental
contaminants
with
well-documented
toxicity.
This
study
investigates
the
independent
and
combined
effects
polystyrene
microplastics
(PS-MPs)
Cu
on
physiological
biochemical
responses
rice
seedlings
(Oryza
sativa
L.),
a
key
staple
crop.
Hydroponic
experiments
were
conducted
under
four
treatment
conditions:
control
(CK),
PS-MPs
(50
mg·L−1),
(20
mg·L−1
Cu2+),
+
treatment.
The
results
showed
that
had
slight
stimulatory
effect
root
elongation,
exposure
mildly
inhibited
growth.
However,
(PS-MPs
Cu)
demonstrated
no
significant
synergistic
or
additive
toxicity
growth
parameters
root,
stem,
leaf
lengths
biomass
(fresh
dry
weights).
Both
significantly
reduced
peroxidase
(POD)
activity
in
leaf,
indicating
oxidative
stress
disrupted
antioxidant
defenses.
Notably,
treatment,
mitigated
by
adsorbing
Cu2+
ions,
reducing
their
bioavailability,
limiting
accumulation
tissues.
These
findings
reveal
complex
interaction
between
MPs
agricultural
systems.
While
can
alleviate
its
they
also
compromise
activity,
potentially
affecting
plant
resilience
to
stress.
provides
foundation
for
understanding
metals,
emphasizing
need
further
research
into
long-term
agronomic
impacts.
