Concern
over
nanoplastic
contamination
of
wetland
ecosystems
has
been
increasing.
However,
little
is
known
about
the
effect
photoaging
on
distribution
and
biological
response
nanoplastics.
Here,
palladium-labeled
polystyrene
nanoplastics
(PS-Pd
NPs)
at
0.05-50
mg/L
were
exposed
to
constructed
microcosms
containing
floating
(Eichhornia
crassipes)
submerged
(Vallisneria
natans)
macrophytes.
Results
demonstrate
that
PS-Pd
NPs'
concentration
in
surface
water
after
2-4
weeks
exposure
was
decreased
by
98.4%
as
compared
with
1st
week.
Photoaging
enhanced
charge
colloidal
stability
NPs,
a
subsequent
increase
content
NPs
middle
layer
264.6
207.4%,
respectively.
Additionally,
significantly
accumulation
E.
crassipes
roots
6.9-65.0%
it
V.
natans
shoots
59.7-123.0%.
inhibited
growth
43.8%
50
mg/L.
Mechanistically,
induced
oxidative
stress
natans,
leading
disruption
metabolic
pathway.
Interestingly,
NP
nitrification
due
alteration
related
bacterial
community
(Ellin6067
13.19%).
These
findings
deepen
our
understanding
environmental
fate
risk
plastic
particles
ecosystems.
Plants,
Journal Year:
2025,
Volume and Issue:
14(4), P. 528 - 528
Published: Feb. 9, 2025
Micro–nanomaterials
have
garnered
significant
attention
in
rice
(Oryza
sativa
L.)
cultivation
due
to
their
unique
physicochemical
properties.
This
study
reviews
the
multifunctional
applications
of
micro–nanomaterials
enhancing
resilience,
promoting
nutrient
uptake,
improving
photosynthetic
efficiency,
and
increasing
utilization
rates
fertilizers
pesticides.
Using
keyword
clustering
analyses,
this
review
identifies
key
research
hotspots
emerging
trends
field,
including
heavy
metal
stress,
nanoplastic
pollution,
biochar
applications.
While
early
studies
predominantly
focused
on
synthesis
characterization
these
materials,
recent
has
shifted
towards
evaluating
comprehensive
ecological
impacts
production
systems.
Despite
promising
potential
yield
quality
while
supporting
sustainable
agriculture,
concerns
about
long-term
accumulation
ecosystems
toxicity
remain
unresolved.
Future
should
prioritize
development
cost-effective,
efficient,
environmentally
friendly
establish
standardized
frameworks
for
risk
assessments
facilitate
large-scale
agricultural
application.
provides
theoretical
insights
practical
references
advancing
micro–nanotechnology
global
food
security
agriculture.
Journal of Agricultural and Food Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 2, 2025
Selenium
(Se)
is
an
essential
micronutrient
for
higher
organisms
and
plays
a
beneficial
role
in
plant
growth
development.
In
recent
years,
there
has
been
growing
interest
the
using
of
Se
to
enhance
resilience,
particularly
mitigating
effects
diseases
pests
agricultural
systems.
This
review
offers
comprehensive
analysis
sources
chemical
forms
soil,
investigates
mechanisms
uptake
metabolism
different
forms,
evaluates
physical
inhibition
pathogens
by
various
as
well
enhancing
systemic
resistance
crop
protection.
Additionally,
we
summarize
current
research
on
pest
disease
control
explore
potential
future
directions,
with
focus
integrating
into
sustainable
practices.
The
insights
presented
this
seek
establish
solid
scientific
foundation
Se-based
approaches
emphasize
its
application
agriculture.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(46), P. 32145 - 32161
Published: Nov. 11, 2024
Current
crop
stress
resistance
research
suggests
that
the
prominent
stimulants
nanoselenium
(NSe)
and
melatonin
(MT)
might
improve
tea
safety,
quality,
induced
by
widely
used
nonselective
herbicide
glufosinate
(GLU).
Their
biofortification
effects
on
growth,
antioxidant
activity,
secondary
metabolism
pathways
response
to
GLU
remain
unclear.
Here,
NSe,
MT,
their
combination
NSe-MT
effectively
reduced
26.6-50.9%
its
metabolites
in
seedlings,
balanced
photosystem,
enhanced
defenses,
optimized
reactive
oxygen
species
scavenging
mechanisms.
Further,
GLU-induced
inhibition
of
glutamine
synthetase
(11.2-34.0%),
ammonium
toxicity
(55.0-64.7%),
nitrogen
disorders
were
alleviated.
Stimulants
exhibited
different
preferences
accumulation
l-theanine
(8.4-47%),
gamma-aminobutyric
acid
(10.3-41.7%),
catechins
(13.1-73.1%,
excluding
ECG),
thereby
influencing
quality.
Transcriptomic
metabolomic
analyses
validated
had
a
more
pronounced
impact
tender
leaves
than
individual
stimulant
treatments.
All
excessive
jasmonic
(29.8-50.5%)
production
signaling
responses,
revealing
significance
physiological
activities
under
or
stress.
The
reduction
aromatic
amino
acids
helped
mitigate
GLU's
interference
with
phenylpropanoid
biosynthesis,
leading
inhibited
lignin
but
nutritional
flavonoid
levels,
such
as
catechins.
NSe
demonstrated
promising
potential
safeners.
These
findings
provided
insights
into
detoxification
mechanisms
other
nontarget
crops
well.
