bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Авг. 14, 2023
ABSTRACT
Asexual
lineages
often
exhibit
broader
distributions
and
can
thrive
in
extreme
habitats
compared
to
their
sexual
counterparts.
Two
hypotheses
have
been
proposed
explain
this
phenomenon.
The
general-purpose
genotype
model
posits
that
selection
favours
a
few
versatile
asexual
genotypes
with
wide
environmental
tolerance,
enabling
long-term
persistence
across
diverse
conditions.
Conversely,
the
frozen
niche
variation
suggests
specialised
minimal
overlap
among
them
relatives,
potentially
leading
competition-driven
exclusion
of
both
relatives.
To
investigate
these
hypotheses,
we
examined
ecological
differentiation
six
globally
distributed
obligate
cosmopolitan
aphid
pest,
Brachycaudus
helichrysi
.
We
initially
investigated
presence
different
endosymbionts
clones,
as
play
major
role
differentiation.
Subsequently,
conducted
multivariate
analyses
explore
climatic
divergence
clones.
provide
evidence
for
specialisation
lineages,
which
is
not
related
variations
endosymbiont
associations.
Therefore,
despite
apparent
global
distribution,
B.
clones
characteristics
genotypes,
aligns
hypothesis.
This
study
represents
first
comprehensive
adaptation
superclones,
providing
novel
insights
into
distribution.
Philosophical Transactions of the Royal Society B Biological Sciences,
Год журнала:
2024,
Номер
379(1904)
Опубликована: Май 5, 2024
To
understand
insect
abundance,
distribution
and
dynamics,
we
need
to
the
relevant
drivers
of
their
populations
communities.
While
microbial
symbionts
are
known
strongly
affect
many
aspects
biology,
lack
data
on
effects
or
community
processes,
insects'
evolutionary
responses
at
different
timescales.
How
these
change
as
anthropogenic
ecosystems
intensify
is
an
area
intense
research.
Recent
developments
in
sequencing
bioinformatics
permit
cost-effective
diversity
surveys,
tracking
symbiont
transmission,
identification
functions
across
multi-species
In
this
review,
explore
how
functional
categories
can
influence
life-history
traits,
could
interactions
with
other
species,
they
may
processes
patterns
level
entire
We
argue
that
insect-associated
microbes
should
be
considered
important
response
adaptation
environmental
challenges
opportunities.
also
outline
emerging
approaches
for
surveying
characterizing
microbiota
population
scales.
This
article
part
theme
issue
‘Towards
a
toolkit
global
biodiversity
monitoring’.
Current Opinion in Insect Science,
Год журнала:
2024,
Номер
66, С. 101270 - 101270
Опубликована: Сен. 16, 2024
Insects
host
microbes
and
interact
with
them
throughout
their
life
cycle.
This
microbiota
is
an
important,
if
not
essential,
partner
participating
in
many
aspects
of
insect
physiology.
Recent
omics
studies
have
contributed
to
considerable
advances
the
current
understanding
molecular
implications
during
development.
In
this
review,
we
present
overview
knowledge
about
mechanisms
underlying
interactions
between
developing
insects
microbial
companions.
The
implicated
nutrition,
both
via
compensating
for
metabolic
pathways
lacking
regulating
metabolism.
Furthermore,
plays
a
protective
role,
enhancing
insect's
tolerance
to,
or
resistance
against,
various
environmental
stresses.
Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(51)
Опубликована: Дек. 10, 2024
DNA
repair
systems
are
essential
to
maintain
genome
integrity
and
stability.
Some
obligate
endosymbionts
that
experience
long-term
symbiosis
with
the
insect
hosts,
however,
have
lost
their
key
components
for
repair.
It
is
largely
unexplored
how
bacterial
cope
increased
demand
mismatch
repairs
under
heat
stresses.
Here,
we
showed
ibpA,
a
small
shock
protein
encoded
by
Journal of Agricultural and Food Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 7, 2025
Mounting
evidence
indicates
that
symbionts
play
a
beneficial
role
through
secondary
metabolic
compounds
and
various
chemical
processes
in
host
adaptation
to
adversity,
particularly
herbivorous
insects
whose
survival
is
severely
threatened
by
insecticides
or
metabolite
stress.
Despite
extensive
research
on
insect
symbionts,
the
spread
of
these
correlation
with
phenotypes
limit
our
ability
predict
manage
adaptive
capabilities
populations
changing
environments.
In
this
review,
we
propose
concept
"Mobile
Resistance
Elements
(MRE)"
describe
dynamic
adaptable
nature
resistance-related
can
be
transmitted
between
hosts.
These
elements
encompass
both
themselves
associated
traits
they
confer
their
hosts,
such
as
enhanced
resilience
environmental
stressors,
toxins,
pathogens.
The
mobility
resistance
traits,
facilitated
transmission
modes─including
vertical
horizontal
pathways─allows
susceptible
acquire
phenotypes.
By
weaving
together
threads
how
shape
adaptability
strategies,
underscores
potential
for
act
agents
rapid
adaptation,
enabling
pest
thrive
environments
presenting
challenges
opportunities
management
strategies.
Symbiosis,
Год журнала:
2024,
Номер
93(2), С. 139 - 152
Опубликована: Июнь 1, 2024
Abstract
Aphids
(Hemiptera:
Aphididae)
are
small,
phloem-feeding
insects
that
exhibit
remarkable
adaptability
and
resilience
to
various
environmental
conditions,
including
heat
stress.
Recent
research
has
shed
light
on
the
role
of
bacterial
symbionts
in
influencing
tolerance
aphids.
Additionally,
an
intriguing
avenue
investigation
explored
how
aphids
can
acquire
through
a
unique
mechanism
involving
soil
nematodes.
In
this
paper,
we
provide
in-depth
overview
interplay
between
stress,
symbionts,
nematodes
context
aphid
biology.
reviewing
existing
literature
collating
available
knowledge,
highlight
mechanisms
by
which
contribute
stress
examine
symbiont
acquisition
process
facilitated
Furthermore,
discuss
implications
these
symbiotic
associations
relation
ecology,
evolution,
agricultural
management
major
globally
expanding
pest
aphid,
corn
leaf
Rhopalosiphum
maidis
(Fitch).
Overall,
it
may
be
concluded
both
primary
secondary
endosymbionts
play
significant
biology
with
evolutionary
consequences.
These
include
adaptations
terms
longevity
fecundity,
shock
tolerance,
resistance
fungal
pathogens
hymenopterous
wasp
parasitoids.
Microbiology Research,
Год журнала:
2024,
Номер
15(3), С. 1359 - 1385
Опубликована: Июль 28, 2024
The
red
palm
weevil
(RPW),
Rhynchophorus
ferrugineus,
poses
a
significant
threat
to
date
palms
globally,
heavily
relying
on
symbiotic
microbes
for
various
physiological
and
behavioral
functions.
This
comprehensive
study
delves
into
the
intricate
dynamics
of
RPW
gut
microbiota,
revealing
diverse
microbial
community
consisting
seven
genera
eight
species
from
Proteobacteria,
Firmicutes,
Actinobacteria.
stability
bacteria
across
different
life
stages
was
observed,
with
notable
impacts
larval
metabolism
attributed
shifts
in
bacterial
composition.
Bacillus
subtilis
emerged
as
key
player,
producing
spectrum
metabolic
enzymes.
Furthermore,
exhibited
remarkable
pesticide
degradation
capabilities,
suggesting
potential
role
host’s
resistance
pesticides.
Arthrobacter
sp.
identified
promising
candidate
eco-friendly
pest
biocontrol
biodegradation
strategies.
Investigating
influence
thermal
stress
two
groups
larvae
(conventional-fed
antibiotic-fed)
at
varying
temperatures
(15,
27,
35
°C)
unveiled
survival
implications.
highlights
pivotal
symbionts
enabling
adaptation
tolerance.
In
essence,
this
research
contributes
crucial
insights
diversity
functions
bacteria,
emphasizing
their
prospective
applications
control
To
understand
insect
abundance,
distribution,
and
dynamics,
we
need
to
the
relevant
drivers
of
their
populations
communities.
While
microbial
symbionts
are
known
affect
many
aspects
biology,
research
on
ecological
evolutionary
importance
for
wild
non-model
insects
is
scarce.
We
still
far
from
understanding
spatio-temporal
dynamics
symbioses
in
natural
communities,
symbiont
effects
or
insects’
responses
at
different
timescales.
Also,
can
only
wonder
how
these
change
as
anthropogenic
ecosystems
intensify.
However,
recent
developments
sequencing
bioinformatics
permit
cost-effective
diversity
surveys,
tracking
transmission,
identification
functions
across
multi-species
helping
us
address
questions.In
this
review,
explore
functional
categories
influence
biology
levels,
could
alter
interactions
among
species,
plausibly
processes
level
entire
argue
that
insect-associated
microbes
should
be
considered
likely
essential
response
adaptation
environmental
challenges
opportunities.
also
outline
emerging
approaches
surveying
characterizing
microbiota
population
community
scales.
To
understand
insect
abundance,
distribution,
and
dynamics,
we
need
to
the
relevant
drivers
of
their
populations
communities.
While
microbial
symbionts
are
known
affect
many
aspects
biology,
research
on
ecological
evolutionary
importance
for
wild
non-model
insects
is
scarce.
We
still
far
from
understanding
spatio-temporal
dynamics
symbioses
in
natural
communities,
symbiont
effects
or
insects’
responses
at
different
timescales.
Also,
can
only
wonder
how
these
change
as
anthropogenic
ecosystems
intensify.
However,
recent
developments
sequencing
bioinformatics
permit
cost-effective
diversity
surveys,
tracking
transmission,
identification
functions
across
multi-species
helping
us
address
questions.In
this
review,
explore
functional
categories
influence
biology
levels,
could
alter
interactions
among
species,
plausibly
processes
level
entire
argue
that
insect-associated
microbes
should
be
considered
likely
essential
response
adaptation
environmental
challenges
opportunities.
also
outline
emerging
approaches
surveying
characterizing
microbiota
population
community
scales.
Insects,
Год журнала:
2024,
Номер
15(3), С. 158 - 158
Опубликована: Фев. 27, 2024
The
mechanism
controlling
sex
allocation
in
the
pea
aphid,
Acyrthosiphon
pisum
(Harris),
remains
a
crucial
yet
unresolved
issue
field
of
evolutionary
ecology.
This
study
aims
to
assess
influence
presence
both
self
and
non-self
clones,
along
with
juvenile
hormone
III
(JH
III)
titer,
on
aphid
offspring.
To
this
end,
red
green
clones
were
utilized
as
experimental
subjects,
agar
method
was
employed.
Initially,
three
distinct
treatments
established
using
sexuparae,
daily
offspring
count
each
treatment
zone
recorded.
Subsequently,
an
additional
condition
involving
mixed-clone
introduced.
procedure
entailed
transfer
single
sexupara
20
oviparous
females
from
either
(1G
+
20Rov)
or
clone
20Gov)
onto
leaf
medium.
Simultaneously,
control
setup
new
(1G)
established.
Three
days
following
production,
dose
0,
25,
50
ng
JH
applied
aphids’
abdomens.
titers
sexuparae
across
group
quantified,
extent
tallied.
findings
demonstrated
pronounced
disparities
among
various
and,
notably,
substantial
increase
total
number
group.
effects
patterns
progeny
could
be
determined
by
application
exogenous
III,
indicating
that
may
mediate
allocation.
Consequently,
it
can
concluded
A.
possess
capability
modulate
their
response
nature
adjacent
competitor
thereby
demonstrating
variety
patterns.
Throughout
process,
plays
pivotal
role.