Journal of Pest Science,
Год журнала:
2022,
Номер
96(1), С. 105 - 117
Опубликована: Фев. 28, 2022
Abstract
Trichogramma
spp.
(Hymenoptera:
Trichogrammatidae)
are
generalist
egg
parasitoids
widely
used
as
biological
control
agents,
yet
with
limited
efficacy
against
Tuta
absoluta
(Meyrick;
Lepidoptera:
Gelechiidae),
a
key
pest
of
tomato.
Olfactory
cues
related
to
the
host-plant
complex
influence
searching
behavior
in
parasitoids.
Studies
have
shown
that
female
can
learn
odor
affecting
their
preference.
We
assessed
if
learning
increases
response
tomato
and
whether
it
improves
parasitism
rate
achaeae
,
evanescens,
dendrolimi
.
The
were
either
naive,
reared
for
one
generation
on
T.
eggs,
or
conditioned
associatively
an
oviposition
experience
factitious
host
presence
odor.
Subsequently,
arrestment
(searching
time)
-infested
leaves
was
observed
static
four-chamber
olfactometer.
Rearing
increased
time
strongly
evanescens
slightly
but
not
In
contrast,
(leaves
extract)
did
improve
dendrolimi.
Concerning
improvement,
only
showed
after
associative
learning.
Hence,
capacity
should
be
further
explored
its
Insects,
Год журнала:
2024,
Номер
15(3), С. 208 - 208
Опубликована: Март 20, 2024
Tomato
is
the
most
preferred
host
plant
for
Tuta
absoluta,
a
newly
emerged
devastating
invasive
pest
in
China.
However,
no
study
has
evaluated
damage
risk
of
T.
absoluta
on
processed
tomato
worldwide.
In
current
study,
life
table
parameters
were
systematically
investigated
five
cultivars
(one
fresh
cultivar,
four
cultivars)
to
determine
their
susceptibility
infestation.
had
better
population
growth
ability
tomato,
“Dafen”,
showing
shorter
duration
preadult
stage,
higher
lifetime
fecundity,
and
intrinsic
rate
increase
compared
cultivars.
Meanwhile,
among
different
also
showed
significant
differences.
Th9
was
susceptible
attack,
while
Th1902,
Heinz1015,
Dimen2272
least
suitable
ones
its
development
reproduction.
summary,
these
are
recommended
commercial
production
reduce
caused
by
improve
integrated
management
strategy.
Insects,
Год журнала:
2022,
Номер
13(3), С. 252 - 252
Опубликована: Март 3, 2022
Microorganisms
in
the
guts
of
insects
enhance
adaptability
their
hosts
with
different
lifestyles,
or
those
that
live
habitats.
Tuta
absoluta
is
an
invasive
pest
a
serious
threat
to
tomato
production
China.
It
has
quickly
spread
and
colonized
Xinjiang,
Yunnan
other
provinces
regions.
We
used
Illumina
HiSeq
next
generation
sequencing
16S
rRNA
gene
study
analyze
composition
diversity
gut
microbiota
three
geographical
populations
T.
absoluta.
At
phylum
level,
most
common
bacteria
across
all
were
Proteobacteria
Firmicutes.
An
uncultured
bacterium
Enterobacteriaceae
was
dominant
bacterial
genus
microbiotas.
There
no
significant
differences
alpha
metrics
among
Spanish,
Xinjiang
populations.
The
structures
similar
based
on
PCoA
NMDS
results.
results
confirmed
microbial
from
regions
similar.
Scientific Reports,
Год журнала:
2022,
Номер
12(1)
Опубликована: Май 27, 2022
Abstract
Tomato
cultivation
is
threatened
by
the
infestation
of
nocturnal
invasive
tomato
pinworm,
Tuta
absoluta
.
This
study
was
based
on
field
observations
that
a
wild
plant,
Solanum
lycopersicum
var.
cerasiforme
,
grown
in
Mount
Kenya
region,
Kenya,
less
attacked
T.
absoluta,
unlike
cultivated
plants
like
S.
(var.
Rambo
F1).
We
hypothesized
plant
may
be
actively
avoided
gravid
females
because
emission
repellent
allelochemical
constituents.
Therefore,
we
compared
levels
pest
monocrops
and
intercrops
two
genotypes,
characterized
headspace
volatiles,
then
determined
compounds
detectable
insect
through
gas
chromatography-linked
electroantennography
(GC-EAG),
finally
performed
bioassays
using
blend
four
EAG-active
unique
to
tomato.
found
significant
reductions
monocrop
tomato,
plant.
Quantitative
qualitative
differences
were
noted
between
volatiles
plants,
day
night
volatile
collections.
The
most
discriminating
treatments
varied
with
variable
selection
or
machine
learning
methods
used.
In
GC-EAG
recordings,
16
including
hexanal,
(
Z
)-3-hexenol,
α
-pinene,
β
-myrcene,
-phellandrene,
E
)-
-ocimene,
terpinolene,
limonene
oxide,
camphor,
citronellal,
methyl
salicylate,
-caryophyllene,
others
tentatively
identified
as
3,7,7-Trimethyl-1,3,5-cycloheptatriene,
germacrene
D
cis
-carvenone
oxide
detected
antennae
females.
Among
these
compounds,
-caryophyllene
-phellandrene
are
top
5
highlighted
methods.
A
citronellal
only
showed
dose-dependent
repellence
wind
tunnel.
provides
some
groundwork
for
exploiting
allelochemicals
development
novel
integrated
management
approaches
against
Insects,
Год журнала:
2023,
Номер
14(4), С. 363 - 363
Опубликована: Апрель 6, 2023
Tuta
absoluta
(Meyrick)
is
a
devastating
invasive
pest
worldwide.
The
abamectin
and
chlorantraniliprole
complex
have
become
an
alternative
option
for
chemical
control
because
they
can
enhance
insecticidal
activity
delay
increased
drug
resistance.
Notably,
pests
are
inevitably
resistant
to
various
types
of
insecticides,
compound
insecticides
no
exception.
To
identify
potential
genes
involved
in
the
detoxification
T.
absoluta,
PacBio
SMRT-seq
transcriptome
sequencing
Illumina
RNA-seq
analysis
complex-treated
were
performed.
We
obtained
80,492
non-redundant
transcripts,
62,762
(77.97%)
transcripts
that
successfully
annotated,
15,524
differentially
expressed
(DETs).
GO
annotation
results
showed
most
these
DETs
biological
processes
life-sustaining
activities,
such
as
cellular,
metabolic,
single-organism
processes.
KEGG
pathway
enrichment
pathways
related
glutathione
metabolism,
fatty
acid
amino
synthesis,
metabolism
response
absoluta.
Among
these,
21
P450s
(11
upregulated
10
downregulated).
qRT-PCR
eight
P450
after
treatment
consistent
with
RNA-Seq
data.
Our
findings
provide
new
full-length
transcriptional
data
information
further
studies
on
detoxification-related
Life,
Год журнала:
2024,
Номер
14(7), С. 872 - 872
Опубликована: Июль 12, 2024
The
tomato
leafminer,
Tuta
absoluta
(Lepidoptera:
Gelechiidae),
is
a
highly
destructive
invasive
pest
targeting
Solanaceae
crops.
Its
olfactory
system
plays
crucial
role
in
host
location,
mate
finding,
and
other
behavioral
activities.
However,
there
notable
gap
the
literature
regarding
characterization
of
its
chemosensory
genes.
In
this
study,
we
conducted
genome-wide
identification
58
odorant
receptors
(ORs)
T.
absoluta.
identified
ORs
exhibit
coding
sequence
(CDS)
lengths
ranging
from
1062
bp
to
1419
bp,
encoding
proteins
354
473
amino
acids.
Gene
structure
analysis
showed
that
majority
these
consist
five,
seven,
eight,
or
nine
exons,
collectively
representing
67%
total
identified.
Through
chromosomal
mapping,
several
tandemly
duplicate
genes,
including
TabsOR12a,
TabsOR12b,
TabsOR12c,
TabsOR21a,
TabsOR21b,
TabsOR34a,
TabsOR34b,
TabsOR34c,
TabsOR62a,
TabsOR62b.
phylogenetic
indicated
six
TabsORs
were
clustered
within
lepidopteran
sex
pheromone
receptor
clade,
while
an
expansion
clade
containing
ten
resulted
tandem
duplication
events.
Additionally,
five
classified
into
specific
OR
Furthermore,
through
RNA-Seq
RT-qPCR
analyses,
(TabsOR21a,
TabsOR26a,
TabsOR36)
exhibiting
female-antennae-biased
expression.
Our
study
provides
valuable
foundation
further
investigations
molecular
ecological
functions
TabsORs,
particularly
relation
oviposition
behavior.
These
findings
provide
foundational
data
for
future
exploration
female-biased
expression
genes
absoluta,
thereby
facilitating
development
eco-friendly
attract-and-kill
techniques
prevention
control
