Proceedings of the National Academy of Sciences,
Journal Year:
2023,
Volume and Issue:
120(37)
Published: Sept. 5, 2023
Here,
we
provide
mechanistic
support
for
the
involvement
of
CYP9A
subfamily
cytochrome
P450
monooxygenases
in
detoxification
host
plant
defense
compounds
and
chemical
insecticides
Spodoptera
exigua
frugiperda
.
Our
comparative
genomics
shows
that
a
large
cluster
genes
occurs
two
species
but
with
significant
differences
its
contents,
including
several
species-specific
duplicates
substantial
sequence
divergence,
both
between
orthologs
duplicates.
Bioassays
CRISPR-Cas9
knockouts
clusters
show
that,
collectively,
CYP9As
can
detoxify
furanocoumarin
(imperatorin
xanthotoxin)
representing
three
different
chemotypes
(pyrethroids,
avermectins,
oxadiazines).
However,
vitro
metabolic
assays
heterologously
expressed
products
individual
particular
activities
against
these
compounds.
We
also
find
tight
genetic
linkage
high
levels
pyrethroid
resistance
field
strains
species.
propose
their
divergent
amplifications
have
not
only
contributed
to
development
broad
ranges
over
long
evolutionary
timeframes
supplied
them
diverse
options
evolving
very
recent
past.
Insect Biochemistry and Molecular Biology,
Journal Year:
2019,
Volume and Issue:
107, P. 53 - 62
Published: Feb. 23, 2019
In
2008,
the
genome
assembly
and
gene
models
for
domestic
silkworm,
Bombyx
mori,
were
published
by
a
Japanese
Chinese
collaboration
group.
However,
contains
non-negligible
number
of
misassembled
gap
regions
due
to
presence
many
repetitive
sequences
within
silkworm
genome.
The
erroneous
occasionally
causes
incorrect
prediction.
Here
we
performed
hybrid
based
on
140
×
deep
sequencing
long
(PacBio)
short
(Illumina)
reads.
remaining
gaps
in
initial
closed
using
BAC
Fosmid
sequences,
giving
new
total
length
460.3
Mb,
with
30
an
N50
comprising
16.8
Mb
scaffolds
12.2
contigs.
More
RNA-seq
piRNA-seq
reads
mapped
compared
previous
version,
indicating
that
covers
more
transcribed
regions,
including
elements.
We
prediction
available
mRNA
protein
sequence
data.
was
16,880
2154
bp.
reflected
accurate
coding
sets
than
old
ones.
proportion
elements
also
reestimated
assembly,
calculated
be
46.8%
are
provided
SilkBase
(http://silkbase.ab.a.u-tokyo.ac.jp).
GigaScience,
Journal Year:
2021,
Volume and Issue:
10(3)
Published: March 1, 2021
Abstract
Background
The
spider
Trichonephila
antipodiana
(Araneidae),
commonly
known
as
the
batik
golden
web
spider,
preys
on
arthropods
with
body
sizes
ranging
from
∼2
mm
in
length
to
insects
larger
than
itself
(>20‒50
mm),
indicating
its
polyphagy
and
strong
dietary
detoxification
abilities.
Although
it
has
been
reported
that
an
ancient
whole-genome
duplication
event
occurred
spiders,
lack
of
a
high-quality
genome
limited
characterization
this
event.
Results
We
present
chromosome-level
T.
constructed
basis
PacBio
Hi-C
sequencing.
assembled
is
2.29
Gb
size
scaffold
N50
172.89
Mb.
scaffolding
assigned
98.5%
bases
13
pseudo-chromosomes,
BUSCO
completeness
analysis
revealed
assembly
included
94.8%
complete
arthropod
universal
single-copy
orthologs
(n
=
1,066).
Repetitive
elements
account
for
59.21%
genome.
predicted
19,001
protein-coding
genes,
which
96.78%
were
supported
by
transcriptome-based
evidence
96.32%
matched
protein
records
UniProt
database.
also
shows
substantial
expansions
several
detoxification-associated
gene
families,
including
cytochrome
P450
mono-oxygenases,
carboxyl/cholinesterases,
glutathione-S-transferases,
ATP-binding
cassette
transporters,
reflecting
possible
genomic
polyphagy.
Further
architecture
reveals
event,
based
2
lines
evidence:
(i)
large-scale
duplications
inter-chromosome
synteny
(ii)
duplicated
clusters
Hox
genes.
Conclusions
represents
valuable
resource
research
provides
insights
into
species’
adaptation
environment.
Entomologia Generalis,
Journal Year:
2022,
Volume and Issue:
43(2), P. 187 - 241
Published: Oct. 26, 2022
à
la
diffusion
de
documents
scientifiques
niveau
recherche,
publiés
ou
non,
émanant
des
établissements
d'enseignement
et
recherche
français
étrangers,
laboratoires
publics
privés.
Journal of Integrative Agriculture,
Journal Year:
2021,
Volume and Issue:
20(3), P. 646 - 663
Published: Feb. 16, 2021
The
fall
armyworm
(FAW),
Spodoptera
frugiperda
(J.
E.
Smith),
is
native
to
the
Americas.
It
has
rapidly
invaded
47
African
countries
and
18
Asian
since
first
detection
of
invasion
into
Nigeria
Ghana
in
2016.
regarded
as
a
super
pest
based
on
its
host
range
(at
least
353
plants),
inherent
ability
survive
wide
habitats,
strong
migration
ability,
high
fecundity,
rapid
development
resistance
insecticides/viruses
gluttonous
characteristics.
inherently
superior
biological
characteristics
FAW
contribute
invasiveness.
Integrated
management
(IPM)
relied
multiple
applications
monitoring
scouting,
agricultural
control,
chemical
pesticides,
viral
insecticides,
sex
attractants,
bio-control
agents
(parasitoids,
predators
entomopathogens)
botanicals.
Knowledge
gaps
remain
be
filled
to:
(1)
understand
invasive
mechanisms
S.
frugiperda;
(2)
how
prevent
further
spread
(3)
provide
better
strategies.
This
review
summarizes
characters
FAW,
their
association
with
invasiveness
IPM
strategies,
which
may
insights
for
future
management.
Insects,
Journal Year:
2021,
Volume and Issue:
12(6), P. 544 - 544
Published: June 11, 2021
The
genus
Spodoptera
(Lepidoptera:
Noctuidae)
includes
species
that
are
among
the
most
important
crop
pests
in
world.
These
polyphagous
able
to
feed
on
many
plants,
including
corn,
rice
and
cotton.
In
addition
their
ability
adapt
toxic
compounds
produced
by
they
have
developed
resistance
chemical
insecticides
used
for
control.
One
of
main
mechanisms
insects
become
resistant
involves
detoxification
enzymes.
this
review,
we
illustrate
some
examples
role
major
families
enzymes
such
as
cytochromes
P450,
carboxyl/cholinesterases,
glutathione
S-transferases
(GST)
transporters
ATP-binding
cassette
(ABC)
insecticide
resistance.
We
compare
available
data
four
species,
exigua,
S.
frugiperda,
littoralis
litura.
Molecular
underlying
involvement
these
genes
will
be
described,
duplication
CYP9A
cluster,
over-expression
GST
epsilon
or
point
mutations
acetylcholinesterase
ABCC2.
This
review
is
not
intended
exhaustive
but
highlight
key
roles
certain
genes.
International Journal of Biological Sciences,
Journal Year:
2022,
Volume and Issue:
18(15), P. 5713 - 5723
Published: Jan. 1, 2022
As
a
superfamily
of
multifunctional
enzymes
that
is
mainly
associated
with
xenobiotic
adaptation,
glutathione
S-transferases
(GSTs)
facilitate
insects'
survival
under
chemical
stresses
in
their
environment.GSTs
confer
adaptation
through
direct
metabolism
or
sequestration
xenobiotics,
and/or
indirectly
by
providing
protection
against
oxidative
stress
induced
exposure.In
this
article,
comprehensive
overview
current
understanding
on
the
versatile
functions
insect
GSTs
detoxifying
compounds
presented.The
diverse
structures
different
classes
GSTs,
specifically
spatial
localization
and
composition
amino
acid
residues
constituted
active
sites
are
also
summarized.Recent
availability
whole
genome
sequences
numerous
species,
accompanied
RNA
interference,
X-ray
crystallography,
enzyme
kinetics
site-directed
mutagenesis
techniques
have
significantly
enhanced
our
functional
structural
diversity
GSTs.
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(19)
Published: April 29, 2024
Phytophagous
insects
have
evolved
sophisticated
detoxification
systems
to
overcome
the
antiherbivore
chemical
defenses
produced
by
many
plants.
However,
how
these
biotransformation
differ
in
generalist
and
specialist
insect
species
their
role
determining
host
plant
range
remains
an
open
question.
Here,
we
show
that
UDP-glucosyltransferases
(UGTs)
play
a
key
of
within
Spodoptera
genus.
Comparative
genomic
analyses
breadth
identified
relatively
conserved
number
UGT
genes
but
high
levels
gene
pseudogenization
picta
.
CRISPR-Cas9
knockouts
three
main
clusters
frugiperda
revealed
UGT33
important
allowing
this
utilize
poaceous
plants
maize,
wheat,
rice,
while
UGT40
facilitate
utilization
cotton.
Further
functional
vivo
vitro
SfUGT33F32
as
mechanism
allows
S.
detoxify
benzoxazinoid
DIMBOA
(2,4-dihydroxy-7-methoxy-2H-1,4-benzoxazin-3(4H)-one),
potent
insecticidal
phytotoxin
capacity
is
several
species,
,
which
specializes
on
Crinum
plants,
unable
due
nonfunctionalizing
mutation
SpUGT33F34
Collectively,
findings
provide
insight
into
UGTs
adaptation,
mechanistic
basis
evolutionary
transitions
between
generalism
specialism
offer
molecular
targets
for
controlling
group
notorious
pests.
Nature Communications,
Journal Year:
2019,
Volume and Issue:
10(1)
Published: Sept. 17, 2019
Abstract
The
codling
moth
Cydia
pomonella
,
a
major
invasive
pest
of
pome
fruit,
has
spread
around
the
globe
in
last
half
century.
We
generated
chromosome-level
scaffold
assembly
including
Z
chromosome
and
portion
W
chromosome.
This
reveals
duplication
an
olfactory
receptor
gene
(
OR3
),
which
we
demonstrate
enhances
ability
C.
to
exploit
kairomones
pheromones
locating
both
host
plants
mates.
Genome-wide
association
studies
contrasting
insecticide-resistant
susceptible
strains
identify
hundreds
single
nucleotide
polymorphisms
(SNPs)
potentially
associated
with
insecticide
resistance,
three
SNPs
found
promoter
CYP6B2
.
RNAi
knockdown
increases
sensitivity
two
insecticides,
deltamethrin
azinphos
methyl.
high-quality
genome
informs
genetic
basis
its
invasiveness,
suggesting
distinctive
capabilities
adaptive
potential
that
may
explain
worldwide
expansion.