Proceedings of the Royal Society B Biological Sciences,
Год журнала:
2024,
Номер
291(2015)
Опубликована: Янв. 17, 2024
In
the
silkmoth
Bombyx
mori
,
role
of
male
sensilla
trichodea
in
pheromone
detection
is
well
established.
Here
we
study
corresponding
female
sensilla,
which
contain
two
olfactory
sensory
neurons
(OSNs)
and
come
lengths,
each
representing
a
single
physiological
type.
Only
OSNs
medium
trichoids
respond
to
scent
mulberry,
silkworm's
exclusive
host
plant,
are
more
sensitive
mated
females,
suggesting
oviposition.
long
trichoids,
one
OSN
tuned
(+)-linalool
other
benzaldehyde
isovaleric
acid,
both
odours
emitted
by
silkworm
faeces.
While
significance
remains
unclear,
acid
repels
females
may
therefore
play
avoiding
crowded
oviposition
sites.
When
examined
underlying
molecular
components
found
non-canonical
co-expression
Ir8a
co-receptor
for
responses,
ORco
odorant
receptors,
unexpected
expression
specific
receptor
trichoid
sensillum
types.
addition
elucidating
function
our
results
suggest
that
some
accepted
organizational
principles
insect
system
not
apply
predominant
on
antenna
B.
.
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(4), С. 1405 - 1405
Опубликована: Фев. 7, 2025
The
tea
tussock
moth
(Euproctis
pseudoconspersa)
is
a
common
plantation
pest
with
Type
III
sex
pheromone
components
(SPCs).
However,
the
olfactory
genes
involved
in
perception
of
SPCs
remain
unknown.
To
identify
E.
pseudoconspersa
perception,
we
sequenced
transcriptomes
different
tissues
from
male
and
female
moths.
We
identified
27
chemosensory
proteins,
39
odorant-binding
proteins
(OBPs),
28
ionotropic
receptors
(IRs),
67
odorant
(ORs).
Phylogenetic
antennal
abundance
analyses
showed
that
EpseOR12,
EpseOR13,
EpseOR15,
EpseOR16,
EpseOR18
belonged
to
receptor
clades
II
moths,
predominant
expression
antennae.
Besides
these
EpseORs,
EpseOR14
EpseOR32
were
two
most
abundant
EpseORs
antennae,
where
they
predominantly
expressed.
Four
pheromone-binding
(PBPs)
identified,
higher
EpsePBPs
may
be
SPC
detection.
Additionally,
few
EpseOBPs,
EpseIRs,
expressed
either
or
These
play
important
roles
olfaction
detecting
host
plant
volatiles
pheromones.
results
provide
foundation
for
further
exploration
molecular
mechanisms
olfaction.
Abstract
Many
animals
use
multicomponent
sex
pheromones
for
mating,
but
the
specific
function
and
neural
processing
of
each
pheromone
component
remain
unclear.
The
cockroach
Periplaneta
americana
is
a
model
studying
communication,
an
adult
female
emits
major
minor
components,
periplanone-B
-A
(PB
PA),
respectively.
Attraction
courtship
behaviors
(wing-raising
abdominal
extension)
are
strongly
expressed
when
males
exposed
to
PB
weakly
they
PA.
When
presented
together
with
PA,
elicited
by
were
impaired,
indicating
that
PA
can
both
promote
suppress
depending
on
pheromonal
context.
In
this
study,
we
identified
receptor
genes
investigated
effects
knocking
down
gene
activities
PA-
PB-responsive
sensory
neurons
(PA-
PB-SNs),
their
postsynaptic
interneurons,
as
well
in
males.
We
found
activate
PB-SNs
neurons,
activation
PB-processing
pathway
critical
expression
behaviors.
also
activates
PA-SNs
PA-processing
pathway.
simultaneously
presented,
undergoes
inhibitory
control
pathway,
which
weakens
Our
data
indicate
physiological
interactions
between
pathways
positively
negatively
mediate
attraction
pheromones.
Cockroaches,
particularly
Blattella
germanica
and
Periplaneta
americana
,
are
among
the
most
medically
important
insects,
because
of
their
close
association
with
human
living
environments.
They
act
as
a
critical
reservoir
vector
for
diverse
range
pathogens,
including
bacteria,
viruses,
fungi,
parasites.
These
pathogens
pose
substantial
public
health
challenges,
infectious
diseases
such
typhoid
fever,
dysentery,
cholera.
Moreover,
cockroaches
carriers
by
harboring
these
on
external
surfaces
within
gastrointestinal
tracts.
When
come
into
contact
food
or
other
in
environments,
they
can
facilitate
pathogen
transmission,
thus
increasing
risk
disease
outbreaks.
This
review
comprehensively
examines
major
categories
associated
cockroaches,
explores
mechanisms
efficiency
vectors,
assesses
global
threats
posed
insects.
Additionally,
it
discusses
potential
control
strategies,
to
provide
robust
scientific
foundation
future
research
development
effective
prevention
measures.
Frontiers in Cellular Neuroscience,
Год журнала:
2023,
Номер
17
Опубликована: Фев. 6, 2023
To
maintain
the
eusociality
of
a
colony,
ants
recognize
subtle
differences
in
colony-specific
sets
cuticular
hydrocarbons
(CHCs).
The
CHCs
are
received
by
female-specific
antennal
basiconic
sensilla
and
processed
specific
brain
regions.
However,
it
is
controversial
whether
peripheral
or
central
neural
mechanism
mainly
responsible
for
discrimination
CHC
blends.
In
Japanese
carpenter
ant,
Camponotus
japonicus
,
about
140
sensory
neurons
(SNs)
co-housed
single
sensillum
receive
blends
18
CHCs.
complexity
this
process
makes
basis
nestmate
recognition
difficult
to
understand.
Here,
we
electrophysiologically
recorded
responses
each
synthesized
CHCs,
identified
SN
sensillum.
Each
activated
different
SNs
was
broadly
tuned
Multiple
given
fired
synchrony,
synchronicity
spikes
impaired
treatment
with
gap
junction
inhibitor.
These
results
indicated
that
were
electrically
coupled.
Quantitative
analysis
have
potential
discriminate
chemical
structures
based
on
combinational
patterns
SNs.
from
colonies
exhibited
response
spectra.
addition,
collected
same
colony
but
bred
separate
groups
also
support
hypothesis
important
between
non-nestmate
ants.
Journal of Integrative Agriculture,
Год журнала:
2022,
Номер
22(7), С. 2162 - 2172
Опубликована: Ноя. 16, 2022
Odorant
receptor
(OR)
is
crucial
for
insects
to
detect
and
recognize
external
chemical
cues
closely
related
their
survival.
The
insect
OR
forms
a
heteromeric
complex
composed
of
ligand-specific
ubiquitously
odorant
coreceptor
(Orco).
This
study
used
the
CRISPR/Cas9
technique
knock
out
(KO)
Orco
reveal
its
essential
role
in
acting
on
OR-meditated
olfactory
behavior
critical
invasive
agricultural
pest,
fall
armyworm
(FAW),
Spodoptera
frugiperda.
Electroantennogram
(EAG)
results
suggested
that
mutants
both
male
female
moths
severely
reduced
electrophysiological
responses
eight
tested
plant
volatiles
two
sex
pheromones.
However,
gene
played
distinct
roles
mating
between
sexes:
was
fully
disrupted
mutated
males
but
not
females.
oviposition
result
indicated
KO
females
displayed
egg
laying
by
24.1%
compared
with
mated
wild
type
(WT)
Overall,
these
strongly
suggest
an
excellent
target
disrupting
FAW's
normal
provides
feasible
pest
control
approach.
