International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(3), С. 1722 - 1722
Опубликована: Янв. 31, 2024
Diet
plays
a
crucial
role
in
shaping
the
gut
microbiota
and
overall
health
of
animals.
Traditionally,
silkworms
are
fed
fresh
mulberry
leaves,
artificial
diets
do
not
support
good
health.
The
aim
this
study
was
to
explore
relationship
between
dietary
transition
from
leaves
effects
on
physiological
changes
as
model
organism.
With
diversity
silkworm
increased,
proportion
Enterococcus
Weissella,
dominant
bacterial
species
reared
diets,
decreased,
whereas
abundance
Achromobacter
Rhodococcus
increased.
Dietary
at
different
times,
including
third
or
fifth
instar
larval
stages,
resulted
significant
differences
growth
development,
immune
resistance,
silk
production
capacity
silkworms.
These
might
have
been
associated
with
rapid
adaptation
intestinal
transition.
This
preliminarily
established
transition–gut
microbial
based
conversion
thus
providing
an
important
reference
for
future
studies
mechanisms
through
which
habitual
affect
host
physiology
microbiome.
Biological reviews/Biological reviews of the Cambridge Philosophical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 7, 2025
In
this
comprehensive
exploration,
we
delve
into
the
pivotal
role
of
host
plants
in
shaping
intricate
interactions
between
herbivorous
insects
and
their
pathogens.
Recent
decades
have
seen
a
surge
studies
that
demonstrate
are
crucial
drivers
pathogens,
providing
novel
insights
direct
indirect
shape
tri-trophic
interactions.
These
built
on
wide
range
from
viruses
to
bacteria,
protozoans
fungi.
We
summarise
these
studies,
discuss
mechanisms
plant-mediated
insect
resistance
infection,
ranging
toxicity
plant
chemicals
pathogens
enhancement
anti-pathogen
immune
responses,
modulation
insect's
microbiome.
Although
provide
evidence
for
roles
all
mechanisms,
also
point
out
majority
existing
phenomenological,
describing
patterns
without
addressing
underlying
mechanisms.
To
further
our
understanding
interactions,
therefore
urge
researchers
design
enable
them
specifically
distinguish
by
which
affect
susceptibility
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Март 6, 2025
Abstract
The
gut
microbiome
of
Lepidopteran
insects
is
highly
dynamic,
influenced
by
both
host
diet
and
phylogeny.
While
microbial
communities
are
thought
to
facilitate
adaptation
diverse
diets
environments,
the
existence
a
core
shared
among
closely
related
herbivores
remains
largely
untested.
In
this
study,
we
examined
in
regurgitant
four
Spodoptera
species
(S.
exigua,
S.
frugiperda,
latifascia,
littoralis)
across
different
(artificial
diet,
cotton,
maize,
squash).
Using
high-throughput
sequencing,
characterized
bacterial
fungal
community
composition
diversity.
Bacterial
were
shaped
species,
indicating
species-specific
selection.
contrast,
exclusively
structured
with
lower
diversity
dominance
few
key
taxa.
Notably,
no
operational
taxonomic
units
consistently
all
or
diets,
challenging
concept
conserved
these
generalist
herbivores.
Understanding
how
shape
herbivores’
ability
feed
on
plants
may
offer
potential
strategies
for
microbiome-based
pest
management.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 12, 2025
The
yellow
stemborer,
Scirpophaga
incertulas,
is
a
monophagous
pest
of
rice,
attacking
the
crop
from
its
vegetative
to
reproductive
stages.
Microorganisms
are
crucial
in
influencing
insect's
life
cycle,
evolution,
and
ecology,
presenting
an
avenue
for
understanding
improving
management
strategies.
Present
research
employed
advanced
next-generation
sequencing
technology
investigate
microbiota
S.
previously
unexplored
area
developmental
stage
associated
microbial
diversity.
study
used
16
S
rRNA
V3–V4
region
amplicon
determine
diversity
bacteria
with
different
stages
incertulas.
Taxonomically,
bacterial
communities
were
classified
into
25
phyla,
encompassing
46
classes,
101
orders,
197
families,
364
genera.
major
phyla
identified
Proteobacteria
(39%),
Firmicutes
Actinobacteria
(11%),
Bacteroidetes
(7%),
being
most
predominant
across
all
except
larval
stage,
where
took
precedence.
Moraxellaceae,
Bacillaceae,
Xanthomonadaceae,
Sphingobacteriaceae,
Flavobacteriaceae
families
However,
egg
adult
stages,
abundance
Bacillaceae
was
notably
lower,
whereas
Prevotellaceae
found
significantly
higher
Dominant
genera
included
Acinetobacter,
Bacillus,
Lactobacillus,
Enterococcus,
Pseudomonas.
result
showed
that
highest
number
Operational
Taxonomic
Units
(OTUs)
(426
OTUs),
lowest
adults
(251
(254
OTUs).
This
suggests
may
play
role
growth
development
predicted
functional
assessment
incertulas
revealed
primarily
participated
metabolic
pathways,
secondary
metabolite
biosynthesis,
energy
metabolism,
signaling,
cellular
processes.
Our
findings
shed
light
on
significant
variations
community
their
functions
present
will
help
developing
novel
microbiota-based
Plant Biotechnology Journal,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 19, 2025
Summary
Pathogen
infection
in
host
plants
can
alter
the
attraction
and
adaptability
of
herbivorous
insects.
Female
adult
insects
often
exhibit
selective
behaviours
based
on
their
environmental
experiences,
enabling
offspring
to
avoid
adverse
conditions
ensuring
healthy
growth
development.
However,
comprehensive
studies
integrating
both
perspectives
fitness
plant
validate
significance
such
parental
‘Mother
knows
worst’
experiences
remain
limited.
Building
our
previous
findings
that
female
Conogethes
punctiferalis
(Yellow
peach
moth,
YPM)
adults
oviposition
avoidance
behaviour
towards
corn
infected
with
Trichoderma
asperellum
,
we
further
confirmed
by
T.
significantly
inhibits
development
YPM
larvae.
Feeding
decreases
larval
gut
microbiota
diversity,
core
abundance
led
differential
expression
key
genes
juvenile
hormone
metabolic
pathway.
Moreover,
content
flavonoid
wogonin,
a
secondary
metabolite,
was
increased
corn.
In
vitro
feeding
experiments
revealed
wogonin
negatively
impacts
causing
accumulation
suppressing
microbial
strains.
This
study
validates
adaptive
empiricism
from
perspective
offspring,
while
elucidating
mechanisms
which
microbial‐mediated
resistance
against
insects,
as
well
for
exploring
utilizing
effective
biocontrol
resources
YPMs.
Proceedings of the National Academy of Sciences,
Год журнала:
2025,
Номер
122(13)
Опубликована: Март 24, 2025
Silicon-induced
responses
play
a
key
role
in
plant
defense
against
herbivory,
though
the
underlying
mechanisms
remain
underexplored.
In
this
study,
we
examined
how
mesoporous
silica
nanoparticles
(MSNs)
affect
tomato
(
Solanum
lycopersicum
)
an
invasive
and
highly
destructive
lepidopteran
herbivore,
pinworm
(TPW),
Phthorimaea
absoluta
.
plants
supplemented
with
MSN,
prior
exposure
to
TPW
oviposition
shifted
subsequent
egg-laying
from
preference
for
leaves
even
distribution
between
stems
leaves.
This
shift
was
not
observed
nonsilicon-supplemented
plants.
Prolonged
triggered
pigmentation
basal
cells
of
type
I
glandular
trichomes
on
silicon-supplemented
Chemical
analysis
by
coupled
gas
chromatography-mass
spectrometry
revealed
that
pigmented
trichome
rich
soluble
sugars
(sucrose
l
-arabinose)
waxes,
dominated
saturated
hydrocarbon
tetracosane.
Bioassays
crude
extract
three-component
sugar–wax
blend
replicated
caterpillar
response
trichome,
while
individual
components
produced
variable
effects.
While
-arabinose
alone
effects
blend,
sucrose
increased
feeding
survival,
tetracosane
caused
highest
mortality.
Additionally,
these
treatments
altered
gut
microbiota
composition
influenced
frass
volatiles,
which
attracted
natural
enemies,
Nesidiocoris
tenuis
(predator)
Neochrysocharis
formosa
(parasitoid).
Our
findings
suggest
silicon
supplementation
increases
through
oviposition-induced
responses,
promotes
recruitment
enemies.
