Ecotoxicology and Environmental Safety,
Год журнала:
2025,
Номер
291, С. 117875 - 117875
Опубликована: Фев. 1, 2025
Seed
germination
is
critical
for
crop
production
and
sensitive
to
abiotic
stresses.
Considering
that
nitric
oxide
(NO)
has
been
shown
ameliorate
the
negative
effects
of
stress
in
several
plants,
we
investigated
effect
mechanisms
exogenous
NO
wheat
seed
under
Fe
stress,
focusing
on
oxidative
stress.
Specifically,
seeds
cultivar
'Ningchun
4'
were
treated
with
1
mM
FeCl3
(Fe)
or
donor
sodium
nitroprusside
(SNP)
and/or
specific
scavenger
2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide
(PTIO).
Changes
endogenous
production,
content,
starch
mobilisation,
antioxidant
enzyme
activity
examined
at
early
(24
h)
late
(72
stages.
Notably,
PTIO
treatments
reduced
potential,
rate,
index,
vitality
index
during
Additionally,
levels,
increased
starch,
sucrose,
soluble
sugar
contents,
induced
suppressed
enzymes,
downregulated
nitrate
reductase,
synthase,
amylase
activities.
However,
SNP
treatment
ameliorated
stress-induced
inhibition
germination,
upregulated
degradation,
improved
system
reactive
oxygen
species
scavenging.
Conclusively,
alleviates
inhibitory
by
enhancing
synthesis,
promoting
decomposition,
alleviating
damage.
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Авг. 1, 2024
Introduction
Salt
stress
is
a
major
abiotic
that
affects
crop
growth
and
productivity.
Choline
Chloride
(CC)
has
been
shown
to
enhance
salt
tolerance
in
various
crops,
but
the
underlying
molecular
mechanisms
rice
remain
unclear.
Methods
To
investigate
regulatory
mechanism
of
CC-mediated
rice,
we
conducted
morpho-physiological,
metabolomic,
transcriptomic
analyses
on
two
varieties
(WSY,
salt-tolerant,
HHZ,
salt-sensitive)
treated
with
500
mg·L
-1
CC
under
0.3%
NaCl
stress.
Results
Our
results
showed
foliar
application
improved
morpho-physiological
parameters
such
as
root
traits,
seedling
height,
strength
index,
fullness,
leaf
area,
photosynthetic
parameters,
pigments,
starch,
fructose
content
stress,
while
decreasing
soluble
sugar,
sucrose,
sucrose
phosphate
synthase
levels.
Transcriptomic
analysis
revealed
regulation
combined
treatment
induced
changes
expression
genes
related
starch
metabolism,
citric
acid
cycle,
carbon
sequestration
organs,
antenna
proteins
both
varieties.
Metabolomic
further
supported
these
findings,
indicating
photosynthesis,
fixation
pathways
were
crucial
tolerance.
Discussion
The
metabolomic
data
suggest
enhances
by
activating
distinct
transcriptional
cascades
phytohormone
signaling,
along
multiple
antioxidants
unique
metabolic
pathways.
These
findings
provide
basis
for
understanding
metabolite
synthesis
gene
response
may
inform
strategies
improving
resilience
Frontiers in Plant Science,
Год журнала:
2025,
Номер
15
Опубликована: Янв. 3, 2025
Dihydroporphyrin
iron
(DH-Fe)
is
a
novel
plant
growth
regulator
that
plays
significant
roles
in
stress
resistance.
We
found
Andrographis
paniculata
extremely
sensitive
to
low
temperature
(LT)
with
threshold
of
25°C.
To
evaluate
whether
and
how
DH-Fe
alleviates
LT
A.
paniculata,
different
concentrations
(0,
10,
20,
40
μg·L-1)
were
applied
estimate
its
effects
on
C
N
metabolism
antioxidative
capacity
grown
under
20°C.
Pre-treatment
alleviated
LT-induced
anthocyanin
accumulation.
Additionally,
it
relieved
oxidative
by
increasing
the
activity
catalase
(CAT).
reduced
contents
sucrose,
soluble
sugar
starch
activities
sucrose
synthase
(SS)
hexokinase
(HXK),
but
stimulated
phosphate
(SPS),
glucose-6-phosphate
dehydrogenase
(G6PDH),
glyceraldehyde
3-phosphate
(GAPDH),
phosphoenolpyruvate
carboxylase
(PEPC),
isocitrate
(ICDH),
malic
enzyme
(ME).
Soluble
protein
proline
decreased
DH-Fe,
while
total
free
amino
acids
increased,
accompanying
enhancement
glutamine
(GS),
glutamic-oxaloacetic
transaminase
(GOT)
glutamic-pyruvic
(GTP).
Simultaneously,
content
andrographolide,
bioactive
ingredient
was
remarkably
declined.
These
results
indicated
oxidation
catabolism
allocating
metabolic
flow
assimilation.
A
concentration
20
μg·L-1
recommended
be
used
enhance
tolerance
paniculata.
Our
update
understanding
mechanism
cold
provide
new
ideas
for
relieving
damage.
Bermudagrass
(Cynodon
dactylon)
has
a
long
history
as
an
excellent
forage
grass,
and
salt
stress
will
inhibit
its
growth
development.
In
order
to
minimize
the
damage,
it
is
necessary
continuously
develop
innovative
technologies
management
strategies.
This
study
evaluated
tolerance
of
new
strains
'FB2019R101'
'FB2019R105'
compared
commercial
varieties
'Wrangler'
'A12359'
under
simulated
soil
salinity
conditions
through
seawater
irrigation.
Through
correlation
analysis
growth,
physiological,
nutritional
indicators,
principal
component
analysis,
core
indicators
weights
for
evaluation
were
identified.
The
salt-tolerant
'FB2019R105'.
Under
stress,
plants
with
suffered
less
damage
whole,
which
could
better
regulate
osmotic
balance
inside
outside
cells,
accumulate
more
nutrients
have
stronger
ability
resist
damage.
expression
level
variety
CdCINV1,
CdSPS1,
CdSUS5,
CdSWEET6
was
up-regulated
stress.
CdSUS5
can
promote
transformation
sucrose
into
glucose
fructose
in
accumulation
fructose.
exhibited
higher
tolerance,
minimal
impact
on
their
biomass,
comprehensive
revealed
ranking
>
'A12359'.
provides
significant
reference
bioremediation
coastal
saline
soils
promotes
research
application
conditions.
improve
by
regulating
changes
carbohydrates.
Seed
germination
represents
a
pivotal
phase
in
crop
production,
exhibiting
pronounced
sensitivity
to
abiotic
stresses.
In
this
study,
wheat
seeds
of
the
'Ningchun
4'
variety
were
subjected
treatments
involving
zinc
(Zn)
chloride
and
iron
(Fe)
chloride,
both
individually
combination.
The
impacts
these
on
Fe
Zn
accumulation,
starch
mobilization,
antioxidant
responses,
nitric
oxide
(NO)
metabolism
during
seed
thoroughly
examined.
Individual
application
or
significantly
inhibited
delayed
germination,
which
was
accompanied
by
elevated
levels
starch,
sucrose,
soluble
sugars,
as
well
increased
reactive
oxygen
species
malondialdehyde
concentrations.
Concurrently,
total
amylase
α-amylase
activities
downregulated,
while
enzyme
expression
TaCAT,
TaAPX,
TaGR
upregulated.
Seeds
treated
solely
with
exhibited
excessive
heightened
Fe2+
content,
diminished
content.
Conversely,
trends
reversed
alone.
Furthermore,
reduced
NO
associated
downregulated
nitrate
reductase
synthase
activities,
alongside
decreased
their
corresponding
genes
response
exposure.
Notably,
above
effects
induced
alone
less
severe
compared
those
stress.
Importantly,
addition
(100
µM
250
µM)
alleviated
detrimental
several
parameters
germinating
seeds.
results
from
fluorescent
probe
staining
corroborated
quantitative
measurements
across
different
treatments.
conclusion,
an
appropriate
concentration
effectively
promoted
Fe-stressed
mitigating
attenuating
oxidative
damage,
enhancing
mobilization
germination.
Agronomy,
Год журнала:
2024,
Номер
14(5), С. 1059 - 1059
Опубликована: Май 16, 2024
Developing
biostimulants
is
a
promising
approach
for
sustainable
agriculture
under
saline
environment.
Thymol
plant-derived
compound
with
potential
antioxidative
capacity.
However,
little
known
about
whether
and
how
the
property
of
thymol
plays
role
in
inducing
plant
tolerance
against
abiotic
stresses.
Here,
we
find
that
induces
Chinese
cabbage
seedlings
via
enhancing
Treatment
NaCl
(100
mM)
decreased
seedling
fresh
weight
by
59.9%
as
compared
to
control.
at
20
μM
showed
greatest
effect
on
promoting
growth
stress,
being
increased
71.0%
treatment.
remarkably
overaccumulation
ROS
(hydrogen
peroxide
superoxide
radical);
cell
membrane
damage
(evaluated
lipid
oxidation,
integrity,
relative
conductivity);
death
stress.
induced
three
systems
lower
level
salt-treated
seedlings.
First,
activated
set
enzymes,
such
SOD
(superoxide
dismutase),
APX
(ascorbate
peroxidase),
CAT
(catalase),
POD
(peroxidase).
Second,
balanced
cellular
redox
status
increasing
ratio
AsA/DHA
(ascorbic
acid/dehydroascorbic
acid)
GSH/GSSG
(glutathione/oxidized
glutathione).
Third,
significantly
enhanced
level-two
kinds
antioxidants
(total
phenol
flavonoid).
All
these
physiological
responses
were
observed
both
shoots
roots.
In
sum,
deploys
multiple
help
Such
findings
suggest
has
great
be
developed
novel
biostimulant
crop
Plants,
Год журнала:
2024,
Номер
13(18), С. 2642 - 2642
Опубликована: Сен. 21, 2024
The
leaf
is
not
only
the
main
site
of
photosynthesis,
but
also
an
important
organ
reflecting
plant
salt
tolerance.
Discovery
salt-stress-responding
genes
in
great
significance
for
molecular
improvement
tolerance
wheat
varieties.
In
this
study,
transcriptome
sequencing
was
conducted
on
leaves
salt-tolerant
germplasm
CH7034
seedlings
at
0,
1,
6,
24,
and
48
h
after
NaCl
treatment.
Based
weighted
gene
correlation
network
analysis
differentially
expressed
(DEGs)
under
stress,
12
co-expression
modules
were
obtained,
which,
9
containing
4029
DEGs
related
to
stress
time-course.
These
submitted
Wheat
Union
database,
a
total
904,588
SNPs
retrieved
from
114
germplasms,
distributed
21
chromosomes.
Using
R
language
package
GAPIT
program,
association
performed
between
injury
index
germplasms.
results
showed
that
30
single
nucleotide
polymorphisms
(SNPs)
15
associated
with
Then,
nine
candidate
genes,
including
four
(
