Agronomy,
Год журнала:
2024,
Номер
14(12), С. 2945 - 2945
Опубликована: Дек. 10, 2024
The
contamination
of
farmland
soil
with
cadmium
(Cd)
poses
a
significant
threat
to
the
safety
and
quality
agricultural
products.
Herbivorous
pests
may
develop
adaptations
survive
in
Cd-contaminated
over
time,
potentially
leading
population
outbreaks.
gut
microbiota
plays
crucial
role
this
adaptation
process,
though
mechanisms
involved
remain
unclear.
This
study
examined
effects
two
pepper
cultivars
Capsicum
annuum
(Chiyan,
CY,
Tianlanse,
TLS)
under
Cd
on
larval
growth,
development,
food
utilization,
Spodoptera
litura
larvae.
inherent
toxicity
TLS
is
higher
than
that
as
evidenced
by
reduction
larvae
survival
rate
control.
In
had
positive
effect
at
low
concentrations
negative
high
concentrations.
Briefly,
5
mg/kg
CY
increased
efficiency
conversion
ingested
(ECI)
relative
growth
(RGR),
whereas
10
decreased
nutritional
indices
[higher
consumption
(RCR),
approximate
digestibility
(AD),
lower
digested
(ECD)].
TLS,
significant,
dose-dependent,
weight,
ECD,
(RGR).
thus
plant
toxins
Meta-barcode
sequencing
16S
rRNA
gene
revealed
microbial
diversity
was
affected
cultivar
but
not
concentration.
fed
most
frequent
bacterial
genera
were
Enterococcus
Pluralibacte,
predominant
genus
Our
findings
reveal
variations
how
impacts
S.
across
different
imply
alterations
communities
could
play
joint
detoxification
plant-derived
toxins.
Journal of Agricultural and Food Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 15, 2025
Heavy
metals
are
prevalent
environmental
contaminants
in
pest
habitats.
This
study
investigates
the
tolerance
of
Hyphantria
cunea
larvae
to
β-cypermethrin
under
cadmium
(Cd)
stress.
Exposure
Cd
markedly
enhanced
larval
β-cypermethrin.
The
P450
enzyme
was
found
be
crucial
triggering
this
cross-tolerance.
Notably,
exposure
significantly
upregulated
expression
HcCYP333A29
and
HcCYP6AE184
both
before
after
treatment.
Silencing
these
genes
reduced
Cd-exposed
larvae.
Furthermore,
overexpression
improved
Sf9
cells
Drosophila
HcDicer-1,
a
key
gene
miRNA
synthesis
pathway,
diminished
Cd-treated
miR-2739
controlled
HcCYP333A29,
while
miR-2854
overexpression,
which
were
essential
for
cross-tolerance
H.
exposure.
Collectively,
induces
through
miRNA-mediated
post-transcriptional
regulation.
Journal of Hazardous Materials,
Год журнала:
2024,
Номер
478, С. 135497 - 135497
Опубликована: Авг. 13, 2024
The
use
of
sewage
sludge
as
a
soil
improver
has
been
promoted
in
agroecosystems.
However,
sludges
can
contain
toxic
trace
elements
because
suboptimal
wastewater
treatment.
Nonetheless,
field
studies
investigating
the
negative
effects
these
practices
on
pollinators
are
lacking.
We
collected
honeybees
from
an
area
where
is
widespread,
and
one
it
precluded.
Trace
soils
bees
were
quantified.
Cadmium,
chromium,
lead,
mercury,
nickel
investigated
they
least
correlated
to
each
other
known
be
toxic.
Their
levels
related
oxidative
stress
energy
biomarkers,
midgut
epithelial
health,
body
size
wing
asymmetry
honeybees.
found
increased
carbohydrate
content
sites
with
higher
cadmium
levels,
histological
damage
epithelium
area,
presence
dark
spherites
highest
lead
levels.
Finally,
we
that
smaller,
fluctuating
increasing
mercury.
To
best
our
knowledge,
this
first
comprehensive
study
concentration
potentially
deriving
amendment
practices.
Insects,
Год журнала:
2024,
Номер
15(9), С. 644 - 644
Опубликована: Авг. 27, 2024
Glyphosate
(GY)
is
the
most
widely
used
herbicide
in
agriculture
worldwide.
Lead
a
common
heavy
metal
natural
environment.
Honeybees,
as
pollinators,
are
exposed
to
these
pollutants.
So
far,
few
reports
have
evaluated
toxic
effects
of
GY
mixed
with
metals
on
honeybees
(
Toxics,
Год журнала:
2024,
Номер
12(2), С. 131 - 131
Опубликована: Фев. 6, 2024
Honey
bees
play
a
critical
role
as
pollinators.
However,
their
reproduction
success
and
survival
face
severe
threats
due
to
the
deterioration
of
living
environment.
Notably,
environmental
conditions
during
preimaginal
stage
inside
brood
cells
can
influence
immune
capabilities
overall
health
after
emergence.
During
in-cell
developmental
stage,
workers
are
in
close
contact
with
cocoons,
which
become
source
stress
accumulated
metals.
To
investigate
this
potential
threat,
experiments
were
conducted
examine
impact
cocoons
used
rear
different
generations
on
metal
content
detoxification
gene
expression
levels
Apis
cerana
cerana.
Our
findings
indicated
significant
differences
layers,
weight,
base
thickness,
contents
like
Cr,
Cd,
Pb,
Mn,
Ni,
As
multi-generation
compared
single-generation
cells.
These
increases
led
elevations
upregulations
four
CYP450
genes
both
six-day-old
larvae
newly
emerged
workers.
In
conclusion,
study
highlights
negative
bee
provides
evidence
supporting
development
rational
apiculture
management
strategies
for
ecosystem
stability.
Agronomy,
Год журнала:
2024,
Номер
14(12), С. 2945 - 2945
Опубликована: Дек. 10, 2024
The
contamination
of
farmland
soil
with
cadmium
(Cd)
poses
a
significant
threat
to
the
safety
and
quality
agricultural
products.
Herbivorous
pests
may
develop
adaptations
survive
in
Cd-contaminated
over
time,
potentially
leading
population
outbreaks.
gut
microbiota
plays
crucial
role
this
adaptation
process,
though
mechanisms
involved
remain
unclear.
This
study
examined
effects
two
pepper
cultivars
Capsicum
annuum
(Chiyan,
CY,
Tianlanse,
TLS)
under
Cd
on
larval
growth,
development,
food
utilization,
Spodoptera
litura
larvae.
inherent
toxicity
TLS
is
higher
than
that
as
evidenced
by
reduction
larvae
survival
rate
control.
In
had
positive
effect
at
low
concentrations
negative
high
concentrations.
Briefly,
5
mg/kg
CY
increased
efficiency
conversion
ingested
(ECI)
relative
growth
(RGR),
whereas
10
decreased
nutritional
indices
[higher
consumption
(RCR),
approximate
digestibility
(AD),
lower
digested
(ECD)].
TLS,
significant,
dose-dependent,
weight,
ECD,
(RGR).
thus
plant
toxins
Meta-barcode
sequencing
16S
rRNA
gene
revealed
microbial
diversity
was
affected
cultivar
but
not
concentration.
fed
most
frequent
bacterial
genera
were
Enterococcus
Pluralibacte,
predominant
genus
Our
findings
reveal
variations
how
impacts
S.
across
different
imply
alterations
communities
could
play
joint
detoxification
plant-derived
toxins.
