ACS Nano,
Год журнала:
2024,
Номер
18(31), С. 20576 - 20590
Опубликована: Июль 24, 2024
Nano-selenium
(Nano-Se),
as
a
biological
stimulant,
promotes
plant
growth
and
development,
well
defense
against
biotic
abiotic
stresses.
Glutathione
(GSH)
is
crucial
antioxidant
also
involved
in
the
response
to
various
In
this
study,
efficacy
of
combined
treatment
Nano-Se
GSH
(SeG)
on
resistance
cucumber
plants
Botrytis
cinerea
was
investigated
terms
phenotype,
gene
expression,
levels
accumulated
metabolites
using
transcriptomic
metabolomic
analyses.
The
exogenous
application
SeG
significantly
enhanced
increased
photosynthetic
pigment
contents
capacity.
Notably,
B.
infection
reduced
markedly
by
41.9%
after
treatment.
At
molecular
level,
activated
alpha-linolenic
acid
metabolic
pathway
upregulated
expression
genes
responsible
for
jasmonic
(JA)
synthesis,
including
LOX
(210%),
LOX4
(430%),
AOS1
(100%),
AOC2
(120%),
therefore
promoting
JA
accumulation
cucumber.
Intriguingly,
level
cucurbitacin,
an
important
phytoalexin
cucurbitaceous
plants,
found
be
SeG-treated
cucurbitacin
biosynthesis-related
OSC
(107.5%),
P450
(440.8%,31.6%),
ACT
(414.0%).
These
were
treatment,
suggesting
that
may
upstream
regulator
biosynthesis.
Taken
together,
study
demonstrated
pretreatment
with
could
activate
signaling
promote
biosynthesis
enhance
infection.
findings
indicate
promising
biostimulant
protecting
from
without
loss.
New Phytologist,
Год журнала:
2024,
Номер
242(3), С. 1289 - 1306
Опубликована: Март 1, 2024
Summary
Jasmonate
(JA)
and
abscisic
acid
(ABA)
are
two
major
phytohormones
involved
in
pathogen
resistance.
However,
how
their
biosynthesis
is
regulated
not
well
understood.
We
silenced
NaWRKY70
wild
tobacco
Nicotiana
attenuata
determined
its
role
regulating
genes
the
production
of
JA,
ABA
phytoalexin
capsidiol
response
to
fungal
Alternaria
alternata
using
techniques
including
electrophoretic
mobility
shift,
chromatin
immunoprecipitation,
transient
overexpression
virus‐induced
gene
silencing.
Silencing
dramatically
reduced
both
basal
A.
‐induced
jasmonoyl‐isoleucine
(JA‐Ile)
ABA.
Further
evidence
showed
that
directly
binds
W‐boxes
promoters
NaAOS
NaJAR4
(JA
biosynthesis),
NaNCED1
NaXD1‐like
(ABA
NaMPK4
signaling)
activate
expression,
while
binding
but
repressing
expression
NaCYP707A4‐like3
degradation).
Additionally,
regulates
through
key
enzyme
NaEAS
s
NaEAH
s,
interacts
with
regulator
NaERF2‐like
enhance
whereas
negatively
biosynthesis.
Our
results
highlight
controlling
JA‐Ile
production,
as
thus
providing
new
insight
into
defense
mechanism
plant
resistance
alternata.
Biology,
Год журнала:
2024,
Номер
13(6), С. 442 - 442
Опубликована: Июнь 17, 2024
Rice
(Oryza
sativa
L.)
production
is
highly
susceptible
to
temperature
fluctuations,
which
can
significantly
reduce
plant
growth
and
development
at
different
developmental
stages,
resulting
in
a
dramatic
loss
of
grain
yield.
Over
the
past
century,
substantial
efforts
have
been
undertaken
investigate
physiological,
biochemical,
molecular
mechanisms
cold
stress
tolerance
rice.
This
review
aims
provide
comprehensive
overview
recent
developments
trends
this
field.
We
summarized
previous
advancements
methodologies
used
for
identifying
cold-responsive
genes
Integration
new
technologies
has
improved
studies
era,
facilitating
identification
essential
genes,
QTLs,
modules
These
findings
accelerated
breeding
cold-resistant
rice
varieties.
In
addition,
functional
genomics,
including
investigation
natural
variations
alleles
artificially
developed
mutants,
emerging
as
an
exciting
approach
investigating
tolerance.
Looking
ahead,
it
imperative
scientists
evaluate
collective
impacts
these
novel
develop
cultivars
resilient
global
climate
change.
Journal of Applied Microbiology,
Год журнала:
2024,
Номер
135(3)
Опубликована: Янв. 24, 2024
Abstract
Aims
The
study
aimed
to
determine
the
pathogenicity
of
Fusarium
species
currently
prevalent
in
tomato
fields
having
history
chemical
fungicide
applications
and
bio-efficacy
Bacillus
subtilis
NBRI-W9
as
a
potent
biological
control
agent.
Methods
results
was
isolated
from
surface-sterilized
infected
plants
collected
fields.
Pathogenicity
30
isolates
determined
by
vitro
vivo
assays.
Following
Koch’s
postulates,
F.
chlamydosporum
(FOL7)
identified
virulent
pathogen.
FOL
7
B.
(W9)
colonization
potential
W9
were
established
using
spontaneous
rifampicin-resistant
mutants.
showed
82%
inhibition
FOL7
on
dual-culture
plate
levels
∼5.5,
∼3.3,
∼2.2
log10
CFU/g
root,
stem,
leaf
tissue,
respectively.
Antagonistic
activity
shown
scanning
electron
microscopy
(SEM)
cell-wall-degradative
enzymes.
reduced
infection
net-house
field
experiments
60%
41%,
Biochemical
investigation,
defence
enzymes,
gene
expression
analysis,
SEM,
studies
provide
evidence
hyperparasitism
induced
resistance
mode
control.
also
demonstrates
that
biocontrol
agent
W9,
Piper,
can
colonize
plants,
fungal
disease
inducing
systemic
(ISR)
acquired
(SAR)
simultaneously,
increase
crop
yield
21.58%
under
conditions.
Conclusions
This
concludes
(NBRI-FOL7)
is
potent,
fungicide-resistant
pathogen
causing
wilt
tomatoes.
controlled
through
mycoparasitism
simultaneously
activated
ISR
SAR
providing
an
attractive
tool
for
acts
at
multiple
levels.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(13), С. 7255 - 7255
Опубликована: Июль 1, 2024
Plant
lipids
are
essential
cell
constituents
with
many
structural,
storage,
signaling,
and
defensive
functions.
During
plant-pathogen
interactions,
play
parts
in
both
the
preexisting
passive
defense
mechanisms
pathogen-induced
immune
responses
at
local
systemic
levels.
They
interact
various
components
of
plant
network
can
modulate
positively
negatively.
Under
biotic
stress,
lipid
signaling
is
mostly
associated
oxygenated
natural
products
derived
from
unsaturated
fatty
acids,
known
as
oxylipins;
among
these,
jasmonic
acid
has
been
great
interest
a
specific
mediator
against
necrotrophic
pathogens.
Although
numerous
studies
have
documented
contribution
oxylipins
other
lipid-derived
species
immunity,
their
roles
interactions
involvement
require
further
elucidation.
This
review
presents
most
relevant
recent
on
molecules
involved
aim
providing
deeper
insight
into
underpinning
lipid-mediated
regulation
system.
Jasmonic
acid
(JA)
signaling
plays
a
crucial
role
in
rice
defense
against
the
striped
stem
borer,
Chilo
suppressalis,
notorious
pest
causing
significant
yield
losses.
This
review
explores
current
understanding
of
JA-mediated
mechanisms
rice,
focusing
on
molecular
basis,
regulatory
elements,
and
practical
implications
for
management.
JA
biosynthesis
pathways
are
induced
upon
C.
suppressalis
infestation,
leading
to
activation
various
responses.
These
include
upregulation
JA-responsive
genes
involved
production
proteinase
inhibitors,
volatile
organic
compounds,
other
defensive
compounds.
The
also
discusses
crosstalk
between
hormonal
pathways,
such
as
salicylic
ethylene,
fine-tuning
Structural
modifications
plants,
cell
wall
reinforcement
accumulation
secondary
metabolites,
have
been
highlighted
key
components
suppressalis.
Furthermore,
applications
this
knowledge
breeding
insect-resistant
varieties
developing
sustainable
management
strategies
were
explored.
Future
research
directions
proposed
further
elucidate
complexities
rice-insect
interactions
harness
enhance
crop
protection.
