Nanomaterials,
Год журнала:
2024,
Номер
14(24), С. 2022 - 2022
Опубликована: Дек. 16, 2024
Sclerotinia
sclerotiorum
is
one
of
the
fungi
that
cause
plant
diseases.
It
damages
plants
by
secreting
large
amounts
oxalic
acid
and
cell
wall-degrading
enzymes.
To
meet
this
challenge,
we
designed
a
new
pH/enzyme
dual-responsive
nanopesticide
Pro@ZnO@Pectin
(PZP).
This
uses
zinc
oxide
(ZnO)
as
carrier
prochloraz
(Pro)
encapsulated
with
pectin.
When
encountering
released
sclerotiorum,
acidic
environment
promotes
decomposition
ZnO;
at
same
time,
pectinase
produced
can
also
decompose
outer
pectin
layer
PZP,
thereby
promoting
effective
release
active
ingredient.
Experimental
data
showed
PZP
was
able
to
achieve
an
efficient
rate
57.25%
68.46%
when
added
or
under
conditions,
respectively.
In
addition,
in
vitro
tests
antifungal
effect
comparable
commercial
Pro
(Pro
SC)
on
market,
its
efficacy
1.40
times
1.32
original
drug
TC),
Crucially,
application
significantly
alleviated
detrimental
impacts
wheat
development.
Soil
wetting
experiments
have
proved
primarily
remained
soil,
decreasing
likelihood
contaminating
water
sources
reducing
potential
risks
non-target
organisms.
Moreover,
improved
foliar
wettability
Pro,
lowering
contact
angle
75.06°.
Residue
analyses
indicated
did
not
elevate
residue
levels
tomato
fruits
compared
conventional
applications,
indicating
formulation
does
lead
excessive
pesticide
buildup.
summary,
shows
great
promise
for
effectively
managing
while
minimizing
environmental
impact.
Abstract
Hydrogen
sulfide
(H
2
S)
has
emerged
as
a
novel
endogenous
gas
signaling
molecule,
joining
the
ranks
of
nitric
oxide
(NO)
and
carbon
monoxide
(CO).
Recent
research
highlighted
its
involvement
in
various
physiological
processes,
such
promoting
root
organogenesis,
regulating
stomatal
movement
photosynthesis,
enhancing
plant
growth,
development,
stress
resistance.
Tobacco,
significant
cash
crop
crucial
for
farmers’
economic
income,
relies
heavily
on
development
to
affect
leaf
disease
resistance,
chemical
composition,
yield.
Despite
importance,
there
remains
scarcity
studies
investigating
role
H
S
tobacco
growth.
This
study
exposed
seedlings
different
concentrations
NaHS
(an
exogenous
donor)
−
0,
200,
400,
600,
800
mg/L.
Results
indicated
positive
correlation
between
concentration
length,
wet
weight,
activity,
antioxidant
enzymatic
activities
(CAT,
SOD,
POD)
roots.
Transcriptomic
metabolomic
analyses
revealed
that
treatment
with
600
mg/L
significantly
effected
162
key
genes,
44
enzymes,
two
metabolic
pathways
(brassinosteroid
synthesis
aspartate
biosynthesis)
seedlings.
The
addition
not
only
promoted
but
also
potentially
reduced
pesticide
usage,
contributing
more
sustainable
ecological
environment.
Overall,
this
sheds
light
primary
involved
response
NaHS,
offering
new
genetic
insights
future
investigations
into
development.
ACS Applied Materials & Interfaces,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 27, 2025
As
the
second
most
important
fungal
pathogen,
Botrytis
cinerea
(B.
cinerea)
poses
a
serious
threat
to
crop
yields
and
agricultural
safety.
Pyraclostrobin
(PYR),
broad-spectrum
QoI
fungicide,
has
been
widely
utilized
since
its
launch
in
2003.
However,
inhibitory
effects
of
both
PYR
technical
formulations
on
B.
are
not
outstanding.
Even
at
concentration
50
μg/mL,
inhibition
rates
by
remain
below
85%.
In
this
work,
we
prepared
an
acid-responsive
Pickering
emulsion
encapsulating
(PYR@BTIB-PE),
which
completely
inhibited
low
concentrations
(25
μg/mL)
for
first
time.
The
PYR@BTIB-PE
achieved
fragmentation
release
within
4
min
pH
5,
was
consistent
with
around
cinerea.
can
rapidly
when
infected
increased
cinerea,
thereby
enhancing
efficacy
PYR.
addition,
released
organic
solvent
from
enhanced
passing
property
membrane,
facilitating
more
enter
body
improvement
membrane
rapid
response
worked
together
achieve
complete
Furthermore,
flexible
amphiphilic
structures
interaction
leaf
surface,
suppressed
droplet
splashing,
promoted
spreading,
reducing
pesticide
loss
improving
utilization
rate
pesticide.
This
study
presents
efficient
strategy
inhibiting
is
also
expected
be
extended
other
antifungal
preparations.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(44), С. 59962 - 59978
Опубликована: Окт. 25, 2024
The
development
of
novel,
safe,
and
efficient
pest
disease
control
technologies
for
agricultural
crops
remains
a
pivotal
area
research.
In
this
study,
by
combining
ZIF-8
ZIF-90,
water-stable,
pH-responsive
bilayer
MOF
nanoparticle
(NP)
named
Z8@Z90
was
created,
tebuconazole
(TEB)
added
to
form
T@Z8@Z90,
used
controlling
peanut
southern
blight.
loading
efficiency
TEB
within
the
T@Z8@Z90
reached
26.15%,
enabling
rapid
release
in
acidic
environments
triggered
oxalic
acid
(OA)
secreted
Sclerotium
rolfsii.
vitro
experiments
showed
that
can
regulate
secretion
S.
rolfsii
destroy
its
cell
membrane
structure.
Additional
revealed
reduced
sclerotial
formation,
decreased
total
protein
content
sclerotia,
influenced
their
sensitivity
pesticides,
thereby
mitigating
risk
reinfection
Notably,
exhibited
translocation
seedlings,
being
absorbed
through
roots
transported
leaves.
At
concentration
200
mg/L,
high
safety
profiles
seedling
growth
compared
suspension.
Moreover,
is
safer
earthworms
than
SC.
Overall,
study
offers
valuable
insights
management
soil-borne
diseases
agriculture
contributes
advancement
sustainable
practices.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(44), С. 60842 - 60855
Опубликована: Окт. 24, 2024
The
construction
of
controlled-release
formulations
improves
the
sustained-release
performance
and
utilization
efficiency
pesticides,
which
are
important
aspects
in
plant
protection
environmental
chemistry.
current
study
employs
kasugamycin
(Kas),
is
widely
used
to
control
Magnaporthe
oryzae,
conjugated
with
carboxyl-functionalized
ZnO
quantum
dots
via
amide
linkages
yield
a
pH-responsive
pesticide
delivery
system
(Kas@ZnO).
Physicochemical
characterizations
indicated
successful
preparation
Kas@ZnO
nanoparticles.
In
vitro
drug
release
assessments
that
exhibited
loading
capacity
21.05%
could
effect
controlled
Kas
an
acidic
environment,
beneficial
given
unique
microenvironment
M.
oryzae.
Bioactivity
assays
demonstrated
simultaneously
inhibit
mycelial
growth
spore
germination.
Additionally,
bioactivity
tests
showed
efficacy
against
rice
blast
reached
67.43%
after
14
days
vivo
spray
inoculation,
was
higher
than
obtained
(55.50%),
suggesting
improved
effects
application
over
prolonged
duration.
Moreover,
enhanced
activity
defense-related
enzymes
upregulated
expression
genes,
such
as
OsPR2,
OsPR3,
OsPR5,
OsWRKY45,
OsLYP6,
OsNAC4.
Ultimately,
biosafety
revealed
did
not
exert
any
harmful
on
slight
toxicity
toward
zebrafish.
These
findings
indicate
can
function
pH-sensitive
system,
allowing
for
targeted
within
tissues.
This
technology
demonstrates
significant
potential
eco-friendly
disease
management.
