Environmental Science & Technology,
Год журнала:
2023,
Номер
57(48), С. 19663 - 19677
Опубликована: Ноя. 10, 2023
A
lack
of
mechanistic
understanding
nanomaterial
interactions
with
plants
and
algae
cell
walls
limits
the
advancement
nanotechnology-based
tools
for
sustainable
agriculture.
We
systematically
investigated
influence
nanoparticle
charge
on
model
wall
surfaces
built
cellulose
or
pectin
performed
a
comparative
analysis
native
Arabidopsis
green
(Choleochaete).
The
high
affinity
positively
charged
carbon
dots
(CDs)
(46.0
±
3.3
mV,
4.3
1.5
nm)
to
both
was
dominated
by
strong
ionic
bonding
between
surface
amine
groups
CDs
carboxyl
pectin.
In
contrast,
these
formed
weaker
hydrogen
hydroxyl
surfaces.
similar
size
negative
(−46.2
1.1
6.6
3.8
neutral
(−8.6
1.3
1.9
ζ-potentials
exhibited
negligible
walls.
Real-time
monitoring
CD
indicated
higher
absorption
efficiency
(3.4
10−9)
acoustic
mass
density
(313.3
63.3
ng
cm–2)
than
counterparts
(p
<
0.001
p
0.01,
respectively).
significantly
enhanced
electrostatic
walls,
pointing
approaches
control
binding
plant
biosurfaces.
Ca2+-induced
cross-linking
affected
initial
(∼3.75
times
lower)
but
not
accumulation
nanoparticles
This
study
developed
biosurfaces
elucidating
fundamental
nanomaterials
main
barrier
translocation
in
environment,
nanoenabled
agriculture
reduced
environmental
impact.
Environmental Science & Technology,
Год журнала:
2023,
Номер
58(2), С. 1010 - 1021
Опубликована: Ноя. 7, 2023
Despite
the
increasing
prevalence
of
atmospheric
nanoplastics
(NPs),
there
remains
limited
research
on
their
phytotoxicity,
foliar
absorption,
and
translocation
in
plants.
In
this
study,
we
aimed
to
fill
knowledge
gap
by
investigating
physiological
effects
tomato
leaves
exposed
differently
charged
NPs
absorption
NPs.
We
found
that
positively
caused
more
pronounced
effects,
including
growth
inhibition,
increased
antioxidant
enzyme
activity,
altered
gene
expression
metabolite
composition
even
significantly
changed
structure
phyllosphere
microbial
community.
Also,
exhibited
differential
translocation,
with
penetrating
into
dispersing
uniformly
within
mesophyll
cells.
Additionally,
absorbed
were
able
translocate
roots.
These
findings
provide
important
insights
interactions
between
crop
plants
demonstrate
NPs'
accumulation
crops
could
negatively
impact
agricultural
production
food
safety.
Nature Communications,
Год журнала:
2022,
Номер
13(1)
Опубликована: Ноя. 30, 2022
Abstract
As
agriculture
strives
to
feed
an
ever-increasing
number
of
people,
it
must
also
adapt
increasing
exposure
minute
plastic
particles.
To
learn
about
the
accumulation
nanoplastics
by
plants,
we
prepared
well-defined
block
copolymer
nanoparticles
aqueous
dispersion
polymerisation.
A
fluorophore
was
incorporated
via
hydrazone
formation
and
uptake
into
roots
protoplasts
Arabidopsis
thaliana
investigated
using
confocal
microscopy.
Here
show
that
is
inversely
proportional
nanoparticle
size.
Positively
charged
particles
accumulate
around
root
surfaces
are
not
taken
up
or
protoplasts,
whereas
negatively
slowly
become
prominent
over
time
in
xylem
intact
roots.
Neutral
penetrate
rapidly
cells
at
plant
but
loading
lower
than
for
negative
nanoparticles.
These
behaviours
differ
from
those
animal
our
results
despite
protection
rigid
cell
walls,
plants
accessible
soil
water.
Environmental Science Nano,
Год журнала:
2022,
Номер
9(3), С. 988 - 999
Опубликована: Янв. 1, 2022
SPc
can
be
conjugated
with
dinotefuran
through
hydrogen
bonding
and
van
der
Waals
forces,
which
reduce
particle
size,
increase
plant
uptake
bioactivity,
decrease
residue.
The
dinotefuran/SPc
complex
is
relatively
safe
to
predators
plants.
ACS Nano,
Год журнала:
2022,
Номер
16(3), С. 4467 - 4478
Опубликована: Фев. 18, 2022
Plant
abiotic
stress
induces
reactive
oxygen
species
(ROS)
accumulation
in
leaves
that
can
decrease
photosynthetic
performance
and
crop
yield.
Materials
scavenge
ROS
simultaneously
provide
nutrients
vivo
are
needed
to
manage
this
stress.
Here,
we
incorporated
both
scavenging
triggered
agent
release
functionality
into
an
∼20
nm
responsive
star
polymer
(RSP)
poly(acrylic
acid)-block-poly((2-(methylsulfinyl)ethyl
acrylate)-co-(2-(methylthio)ethyl
acrylate))
(PAA-b-P(MSEA-co-MTEA))
alleviated
plant
by
simultaneous
nutrient
release.
Hyperspectral
imaging
indicates
all
of
the
RSP
penetrates
through
tomato
leaf
epidermis,
32.7%
applied
associates
with
chloroplasts
mesophyll.
scavenged
up
10
μmol
mg–1
vitro
suppressed
stressed
(Solanum
lycopersicum)
leaves.
Reaction
H2O2
enhanced
(Mg2+)
from
polymers.
Foliar
increased
photosynthesis
plants
under
heat
light
compared
untreated
controls,
enhancing
carbon
assimilation,
quantum
yield
CO2
Rubisco
carboxylation
rate,
photosystem
II
Mg
loaded
improved
deficient
plants,
mainly
promoting
activity.
These
results
indicate
potential
nanocarriers
like
alleviate
allowing
be
more
resilient
stress,
potentially
other
climate
change
induced
stressors.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(22), С. 8269 - 8279
Опубликована: Май 25, 2023
An
incomplete
understanding
of
how
agrochemical
nanocarrier
properties
affect
their
uptake
and
translocation
in
plants
limits
application
for
promoting
sustainable
agriculture.
Herein,
we
investigated
the
aspect
ratio
charge
monocot
wheat
(Triticum
aestivum)
dicot
tomato
(Solanum
lycopersicum)
after
foliar
application.
Leaf
distribution
to
plant
organs
were
quantified
polymer
nanocarriers
with
same
diameter
(∼10
nm)
but
different
ratios
(low
(L),
medium
(M),
high
(H),
10–300
nm
long)
charges
(−50
+15
mV).
In
tomato,
anionic
(20.7
±
6.7
wt
%)
was
higher
than
cationic
(13.3
4.1
%).
wheat,
only
transported
(8.7
3.8
Both
low
polymers
translocated
longest
did
not
translocate
suggesting
a
phloem
transport
size
cutoff.
Differences
correlated
leaf
interactions
mesophyll
cells.
The
positive
decreases
penetration
through
epidermis
promotes
into
cells,
decreasing
apoplastic
loading.
These
results
suggest
design
parameters
provide
rapid
complete
an
ability
target
agrochemicals
specific
organs,
potential
lower
use
associated
environmental
impacts.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(36), С. 13356 - 13365
Опубликована: Авг. 31, 2023
To
understand
the
nanotoxicity
effects
on
plants,
it
is
necessary
to
systematically
study
distribution
of
NPs
in
vivo.
Herein,
elemental
and
particle-imaging
techniques
were
used
unravel
size
ZnO
phytotoxicity.
Small-sized
(5,
20,
50
nm)
showed
an
inhibitory
effect
length
biomass
rice
(Oryza
sativa
L.)
as
a
model
plant.
NP
caused
root
cell
membrane
damage,
increased
malondialdehyde
content,
activated
antioxidant
enzymes.
As
control,
same
dose
Zn2+
salt
did
not
affect
physiological
biochemical
indices
rice,
suggesting
that
toxicity
by
entry
dissolved
Zn2+.
Laser
ablation
inductively
coupled
plasma
optical
emission
spectroscopy
analysis
revealed
accumulated
vascular
tissues
rhizodermis
procambium.
Furthermore,
transmission
electron
microscopy
confirmed
internalized
tissues.
These
results
suggest
may
exist
system
their
particle
could
be
crucial
factor
determining
toxicity.
This
provides
evidence
size-dependent
phytotoxicity
NPs.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(13), С. 5646 - 5669
Опубликована: Март 22, 2024
Nanodelivery
vehicles
(NDVs)
are
engineered
nanomaterials
(ENMs)
that,
within
the
agricultural
sector,
have
been
investigated
for
their
ability
to
improve
uptake
and
translocation
of
agrochemicals,
control
release,
or
target
specific
tissues
subcellular
compartments.
Both
inorganic
organic
NDVs
studied
agrochemical
delivery
in
literature,
but
research
on
latter
has
slower
develop
than
literature
former.
Since
two
classes
exhibit
significant
differences
surface
chemistry,
physical
deformability,
even
colloidal
stability,
trends
that
apply
may
not
hold
NDVs,
vice
versa.
We
here
review
current
uptake,
translocation,
biotransformation,
cellular
internalization
plants
following
foliar
root
administration.
A
background
plant
physiology
is
provided
as
a
leveling
ground
researchers
field.
Trends
examined
function
NDV
properties
compared
those
reported
nanomaterials.
Methods
assessing
fate
transport
(a
major
bottleneck
field)
discussed.
end
by
identifying
knowledge
gaps
must
be
understood
order
rationally
design
precision
nanodelivery.
