Insects,
Journal Year:
2024,
Volume and Issue:
15(9), P. 705 - 705
Published: Sept. 16, 2024
Spodoptera
frugiperda
(J.E.
Smith)
(Noctuidae:
Lepidoptera)
is
a
notable
insect
pest
that
invades
major
cereal
crops,
causing
significant
damage
and
loss.
Resistances
of
2nd
instar
larvae
two
Egyptian
field
populations
S.
frugiperda,
collected
from
the
Fayoum
Giza
governments,
were
measured
against
eight
insecticides,
including
traditional
insecticides
(profenofos
cypermethrin),
bio-insecticides
(emamectin
benzoate,
spinosad,
Bacillus
thuringiensis),
growth
regulators
(IGRs)
(lufenuron,
diflubenzuron,
methoxyfenozide).
In
addition,
synergistic
effects
three
synergists
(Piperonyl
butoxide
(PBO),
diethyl
maleate
(DEM),
triphenyl
phosphate
(TPP)
assessed,
activities
detoxification
enzymes
(acetylcholine
esterase
(AChE),
cytochrome
P-450
(CYP-450),
carboxylesterase
(CarE),
glutathione-s-transferase
(GST)
also
determined.
Resistance
surveillance
revealed
population
showed
moderate
resistance
to
cypermethrin
(RR
=
5.75-fold),
followed
by
spinosad
2.62-fold),
lufenuron
(2.01-fold).
On
other
hand,
exhibited
only
3.65-fold).
Our
results
emamectin
benzoate
was
most
effective
insecticide,
with
an
LC50
value
0.003
mg/L
for
0.001
population,
compared
susceptible
strain
(0.005
mg/L).
Among
biological
thuringiensis
least
toxic
insecticide
all
tested
strains.
Synergism
assays
indicated
DEM
TPP
had
effect
on
(SR
8.00-fold
both),
PBO
5.71-fold)
alone.
The
assay
GST
activity
significantly
(p
<
0.05)
increased
in
strains
strain.
However,
no
changes
observed
among
CYP-450,
CarE,
or
AChE.
findings
this
study
provide
substantial
insights
into
tracking
managing
development
Egypt.
Neotropical Entomology,
Journal Year:
2024,
Volume and Issue:
53(3), P. 669 - 681
Published: March 13, 2024
Over
the
last
decade,
essential
oils
(EOs)
have
become
potential
ingredients
for
insecticide
formulations
due
to
their
widespread
availability
and
perceived
safety.
Therefore,
this
study
aimed
evaluate
toxicity
biochemical
efficacy
of
basil
(Ocimum
basilicum)
(Lamiaceae)
against
two
destructive
pests
Noctuidae,
Agrotis
ipsilon
(Hufnagel)
Spodoptera
littoralis
(Boisduval)
(Lepidoptera:
Noctuidae).
In
addition,
a
molecular
docking
was
performed
gain
insight
into
binding
pattern
between
glutathione
S-transferase
(GST)
linalool,
main
component
EO.
GC-MS
analysis
O.
basilicum
EO
revealed
that
linalool
is
most
abundant
compound
(29.34%).
However,
tests
showed
no
significant
difference
values
LC
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
282, P. 116682 - 116682
Published: July 13, 2024
The
effectiveness,
tolerance,
and
safety
of
pesticides
must
be
established
before
their
scientific
or
rational.
This
study
evaluates
the
field
control
efficacy
broflanilide,
tetraniliprole,
chlorantraniliprole
in
combating
Spodoptera
frugiperda
maize
crops,
as
well
resistance
S.
to
these
three
diamide
after
exposure.
By
assessing
efficiency,
toxicity,
effects
on
development
reproduction,
detoxification
enzyme
activity
frugiperda,
highlights
broflanilide's
significant
insecticidal
potential.
A
highly
sensitive
efficient
method
using
QuEChERS/HPLCMS/MS
was
developed
simultaneously
detect
residues
maize.
Initial
concentrations
ranged
from
2.13
4.02
mg/kg,
with
respective
half-lives
varying
between
1.23
1.51
days.
Following
foliar
application,
by
time
harvest,
terminal
residue
were
all
under
0.01
mg/kg.
Chronic
dietary
intake
risk
assessments
cumulative
chronic
exposure
for
indicated
that
general
population's
concentration
within
acceptable
limits.
Not
only
does
this
research
provide
valuable
insights
into
effects,
resistance,
residues,
assessment
results
maize,
but
additionally,
it
also
paves
way
setting
suitable
Maximum
Residue
Limits
(MRLs)
values
based
pre-harvest
interval
values,
rational
dosage,
application
frequency.
Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi,
Journal Year:
2025,
Volume and Issue:
28(3), P. 625 - 635
Published: May 1, 2025
In
this
study,
2-chloro-N-(4-methoxyphenyl)acetamide
(p-acetamide)
and
2-(4-methoxyphenylamino)-2-oxoethyl
methacrylate
(MPAEMA)
were
resynthesized
to
evaluate
their
effect
on
the
agricultural
pest
Galleria
mellonella.
The
toxicities
of
p-acetamide
MPAEMA
against
larval
stage
G.
mellonella
evaluated
concurrently.
results
indicate
that
has
a
lethal
insect
larvae
at
lower
doses.
LC50
doses
873,572
687,355
uM,
respectively.
These
values
represent
concentrations
substances
which
50%
exposed
them
are
expected
die.
molecular
docking
interactions
with
proteins
superoxide
dismutase
(SOD),
catalase
(CAT),
glutathione
peroxidase
(GPx),
glutathione-S-transferase
(GST)
analyzed.
binding
energy
between
was
determined
be
-6.8
kcal/mol.
This
suggests
may
have
an
inhibitory
could
further
investigated
for
developing
pesticides
target
enzyme.
RSC Advances,
Journal Year:
2025,
Volume and Issue:
15(8), P. 6050 - 6067
Published: Jan. 1, 2025
Several
fused/binary
pyrazole
quinolinone
hybrids
are
synthesized
via
tandem
reactions
and
their
insecticidal
efficacy
against
S.
littoralis
A.
gossypii
evaluated.
Environmental Science and Pollution Research,
Journal Year:
2023,
Volume and Issue:
30(40), P. 92268 - 92281
Published: July 24, 2023
Abstract
Contamination
of
paddy
soils
with
arsenic
(As)
can
cause
phytotoxicity
in
rice
and
increase
the
accumulation
grains.
The
uptake
As
depends
on
different
species
present
soil.
Plants
detoxify
by
conjugating
sequestering
xenobiotic
compounds
into
vacuoles
using
various
enzymes.
However,
severity
damage
induced
arsenite
(As(III))
arsenate
(As(V)),
as
well
roles
glutathione
S-transferase
detoxifying
these
rice,
are
not
fully
understood.
In
this
study,
we
developed
plant
materials
overexpressing
a
gene
OsGSTU40
under
control
maize
UBIL
promoter.
Through
systematic
investigations
both
wild-type
Nipponbare
(
Oryza
sativa
L.,
ssp.
japonica)
overexpression
lines
chronic
or
acute
stress
As,
aimed
to
understand
toxic
effects
As(III)
As(V)
plants
at
vegetative
growth
stage.
We
hypothesized
that
(i)
have
(ii)
played
positive
toxicity
tolerance.
Our
results
showed
was
more
detrimental
than
terms
growth,
biomass,
lipid
peroxidation
exposure.
Furthermore,
led
better
even
though
As(V),
but
As(III),
shoots
enhanced
transgenic
plants.
stress,
exhibited
lower
level
element
composition
dominated
treatments
rather
genotype,
while
concentration
negatively
correlated
phosphorus
silicon.
Overall,
our
findings
suggest
is
differentially
affects
reactions
tolerance
arsenic.
