bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 25, 2024
Lathyrus
sativus
(grass
pea)
is
a
valuable
crop
for
sustainable
agriculture,
offering
both
dietary
benefits
and
desirable
agronomic
traits.
However,
its
yield
stability
limited
by
different
diseases
such
as
powdery
mildew
caused
Erysiphe
pisi
.
Frequent
fungal
resistance
to
pesticides
growing
environmental
concerns
highlight
the
need
research
investment
develop
resistant
varieties.
Four
L.
accessions,
exhibiting
varying
levels
of
E.
(resistant,
partially
resistant,
susceptible,
susceptible),
were
analysed
using
dual
RNA-seq
identify
key
defence
mechanisms
effector
genes
involved
in
this
plant-pathogen
interaction.
The
transcriptomic
analysis
highlighted
host
biphasic
response,
characterised
an
initial
burst
gene
expression,
followed
quiescent
phase,
second
wave
intense
expression
at
72
hours
after
inoculation.
Common
mechanisms,
including
antifungal
protein
cell
wall
reinforcement,
reactive
oxygen
species-mediated
activated
all
accessions
compared
susceptible
accession.
Unique
responses
accession
integrate
early
reinforcement
structural
barriers
with
sustained
chemical
defences
stress
responses.
Overall,
exhibited
front-loaded
focused
on
biotic
stimuli
interspecies
interactions
infection
stages.
In
contrast,
partial
weaker
baseline
system,
slower
less
robust
response
specifically
targeting
pathogen
infection.
We
identified
potential
effectors,
hydrolysis,
nutrient
acquisition,
virulence,
higher
diversity
effectors
This
study
identifies
novel
targets
within
complex
sativus-Erysiphe
interaction
that
will
support
future
breeding
programs
aimed
enhancing
other
related
species.
Foods,
Год журнала:
2025,
Номер
14(5), С. 761 - 761
Опубликована: Фев. 23, 2025
The
disease
resistance
and
defense
mechanisms
induced
by
ursolic
acid
(UA)
in
apple
fruit
were
studied
this
paper.
UA
was
directly
mixed
with
potato
dextrose
agar
broth
media
to
assay
its
antifungal
activity
vitro.
results
showed
that
exerted
inherent
inhibited
the
vitro
growth
spore
germination
of
Penicillium
expansum.
Its
half-maximal
inhibitory
concentration
for
hyphal
175.6
mg
L-1.
Apple
immersed
solution,
followed
inoculation
P.
expansum,
measure
their
response.
demonstrated
significant
are
multifaceted
associated
defensive
antioxidative
enzymes
phenylpropanoid
pathway.
Chitinase,
β-1,3-glucanase,
peroxidase,
polyphenol
oxidase
activated
maintained
at
relatively
high
levels.
activities
metabolites
pathway,
including
phenylalanine
ammonia-lyase,
cinnamate-4-hydroxylase,
4-coumarate
coenzyme
A
ligase
significantly
increased;
accordingly,
total
phenolics,
flavonoid,
lignin
contents
increased.
superoxide
dismutase,
ascorbate
glutathione
reductase
enhanced
upon
treatment,
while
catalase
suppressed,
which
regulates
hydrogen
peroxide
accumulation
defend
against
pathogens.
These
suggest
induces
responses
postharvest
blue
mold
rot
it
may
be
a
promising
elicitor
induce
control
decay.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Март 5, 2025
Lathyrus
sativus
(grass
pea)
is
a
valuable
crop
for
sustainable
agriculture,
offering
dietary
benefits
and
desirable
agronomic
traits.
However,
its
yield
stability
limited
by
diseases
such
as
powdery
mildew
caused
Erysiphe
pisi.
Increasing
fungal
resistance
to
pesticides
environmental
concerns
demand
the
development
of
resistant
varieties.
To
identify
key
defense
mechanisms
effector
genes
involved
in
sativus-Erysiphe
pisi
interaction
we
analyzed
four
L.
accessions
exhibiting
varying
E.
(resistant,
partially
resistant,
susceptible,
susceptible)
using
dual
RNA-Seq
experiment
across
different
time
points.
We
observed
host
biphasic
response,
characterized
an
initial
burst
gene
expression,
followed
quiescent
phase,
subsequent
wave
intense
expression.
Common
included
antifungal
protein
cell
wall
reinforcement,
reactive
oxygen
species-mediated
defense.
These
defenses
respectively
Bowman-Birk
type
proteinase
inhibitors,
peptidyl-prolyl
cis-trans
isomerases
mannitol
dehydrogenases.
The
accession
specifically
activated
early
reinforcement
structural
barriers
associated
with
lignin
biosynthesis
phenylpropanoid
pathway,
along
sustained
chemical
(e.g.
eugenol
synthase
1),
epigenetic
regulation,
oxidative
stress
responses
thorough
peroxidases
heat
shock
proteins.
partial
exhibited
front-loaded
response
at
infection
stages.
Contrastingly,
susceptible
weaker
baseline
defense,
slower
less
robust
targeting
pathogen
infection.
identified
potential
effectors,
including
hydrolysis
mannosidase
DCW1),
nutrient
acquisition
secreted
alpha-glucosidase),
virulence
SnodProt1),
higher
diversity
effectors
accession.
In
conclusion,
this
study
identifies
novel
targets
NLRs
proteins
related
within
complex
support
future
breeding
programs
aimed
enhancing
species.
PLoS ONE,
Год журнала:
2025,
Номер
20(3), С. e0320436 - e0320436
Опубликована: Март 26, 2025
Crop
protection
is
essential
for
maintaining
and
improving
agricultural
productivity.
While
pesticides
are
commonly
used
to
control
pests,
they
pose
several
challenges,
including
environmental
harm
health
risks.
Alternative
strategies
include
breeding
resistant
crop
varieties,
biological
control,
utilizing
genome-editing
tools
like
CRISPR/Cas.
However,
the
application
of
epigenome
editing,
particularly
CRISPR
activation
(CRISPRa),
in
plants
remains
underexplored.
Phenylalanine
ammonia-lyase
(PAL),
a
key
enzyme
phenylpropanoid
pathway,
plays
pivotal
role
plant
defense
by
producing
lignin
other
secondary
metabolites
pathogen
resistance.
In
this
study,
we
engineered
tomato
fusing
SET-domain
SlATX1
coding
gene,
histone
H3
lysine
4
tri-methyltransferase,
dCas12a,
targeting
SlPAL2
promoter
with
aim
increase
PAL2
gene
expression.
CRISPRa-edited
demonstrated
increased
deposition
H3K4me3
epigenetic
mark
significantly
upregulated
This
enhanced
accumulation
conferred
resistance
Clavibacter
michiganensis
subsp.
(Cmm)
without
significant
reduction
height
or
fruit
yield.
Disease
was
also
associated
reduced
load
lesion
size,
higher
levels
persisted
even
after
expression
declined
post-infection.
These
findings
highlight
potential
CRISPRa
reprogramming
responses
through
targeted
modifications,
offering
sustainable
approach
improvement.
Furthermore,
could
be
applied
enhance
resilience
contexts,
such
as
addressing
food
security
challenges
enhancing
Metabolites,
Год журнала:
2025,
Номер
15(4), С. 276 - 276
Опубликована: Апрель 16, 2025
As
global
climates
shift,
plants
are
increasingly
exposed
to
biotic
and
abiotic
stresses
that
adversely
affect
their
growth
development,
ultimately
reducing
agricultural
productivity.
To
counter
these
stresses,
produce
secondary
metabolites
(SMs),
which
critical
biochemical
essential
compounds
serve
as
primary
defense
mechanisms.
These
diverse
compounds,
such
alkaloids,
flavonoids,
phenolic
nitrogen/sulfur-containing
act
natural
protectants
against
herbivores,
pathogens,
oxidative
stress.
Despite
the
well-documented
protective
roles
of
SMs,
precise
mechanisms
by
environmental
factors
modulate
accumulation
under
different
stress
conditions
not
fully
understood.
This
review
provides
comprehensive
insights
into
recent
advances
in
understanding
functions
SMs
plant
emphasizing
regulatory
networks
biosynthetic
pathways.
Furthermore,
we
explored
unique
contributions
individual
SM
classes
responses
while
integrating
findings
across
entire
spectrum
diversity,
providing
a
resilience
multiple
conditions.
Finally,
highlight
emerging
strategies
for
harnessing
improve
crop
through
genetic
engineering
present
novel
solutions
enhance
sustainability
changing
climate.
Frontiers in Forests and Global Change,
Год журнала:
2024,
Номер
7
Опубликована: Дек. 18, 2024
Forests
are
potential
habitats
for
immense
terrestrial
ecosystems
and
aquatic
biodiversity,
performing
an
essential
role
in
ecological
preservation
regulation
of
climate.
The
anthropogenic
pressures
on
the
forests
lead
to
forest
loss,
fragmentation
degradation.
Requirements
sustainable
methodologies
protection
utmost
priority
under
climate
change
regime.
Among
trees,
poplar
trees
(
Populus
L.)
have
attracted
attention
global
forestry
as
a
promising
material
improving
quality
quantity
urban
landscapes.
These
plants
provide
wood,
which
can
be
utilized
raw
resources
paper
industry
source
biofuel.
However,
several
biotic
stresses,
such
attacks
by
pests
pathogens,
severely
affect
production
productivity.
improvement
through
conventional
tree
breeding
methods
is
restricted
due
their
long-life
cycles
lack
suitable
donors
with
resistance
genes.
has
been
model
plant
studying
gene
functions
its
highly
efficient
genetic
transformation
capabilities.
present
review
will
comprehensive
overview
pest
pathogen
poplar,
focusing
infection
mechanisms,
transmission
routes,
control
strategies.
Additionally,
it
examine
most
widely
used
(gene
gun-mediated,
Agrobacterium
tumefaciens
-mediated,
protoplast
transformation,
micro-RNA
mediated
clustered
regularly
interspaced
short
palindromic
repeats
(CRISPR)-associated
(CRISPR-Cas)
systems
RNA
interference)
tolerance
against
pathogens
attack.
Furthermore,
delve
into
prospects,
challenges,
recent
advances
molecular
biology
tools
safe
application
improve
insect
trees.
Finally,
regeneration
transgenic
enhanced
resistance,
developed
various
engineering
techniques,
discussed.