Plants,
Journal Year:
2024,
Volume and Issue:
13(10), P. 1418 - 1418
Published: May 20, 2024
Salinity
reduces
crop
yields
and
quality,
causing
global
economic
losses.
Zinc
oxide
nanoparticles
(ZnO-NPs)
improve
plant
physiological
metabolic
processes
abiotic
stress
resistance.
This
study
examined
the
effects
of
foliar
ZnO-NPs
at
75
150
mg/L
on
tomato
Kecskeméti
549
plants
to
alleviate
salt
caused
by
mM
NaCl.
The
precipitation
procedure
produced
that
were
characterized
using
UV-VIS,
TEM,
STEM,
DLS,
EDAX,
Zeta
potential,
FTIR.
assessed
TPCs,
TFCs,
total
hydrolyzable
sugars,
free
amino
acids,
protein,
proline,
H
Plants,
Journal Year:
2023,
Volume and Issue:
12(14), P. 2631 - 2631
Published: July 13, 2023
Plant
cells
respond
to
stress
by
activating
signaling
and
regulatory
networks
that
include
plant
hormones
numerous
mediators
of
non-hormonal
nature.
These
the
universal
intracellular
messenger
calcium,
reactive
oxygen
species
(ROS),
gasotransmitters,
small
gaseous
molecules
synthesized
living
organisms,
signal
functions
such
as
nitrogen
monoxide
(NO),
hydrogen
sulfide
(H2S),
carbon
(CO),
others.
This
review
focuses
on
role
functional
linkages
jasmonic
acid
jasmonate
components
with
gasotransmitters
other
mediators,
well
some
metabolites,
in
regulation
adaptive
responses
abiotic
stressors.
Data
involvement
NO,
H2S,
CO
formation
its
transduction
were
analyzed.
The
possible
protein
stress-protective
gasotransmitter
effects
is
discussed.
Emphasis
placed
significance
interaction
between
antioxidant
system,
stomatal
apparatus,
processes
important
for
adaptation
stresses.
Deleted Journal,
Journal Year:
2025,
Volume and Issue:
77(1)
Published: Feb. 1, 2025
With
the
increasing
impact
of
global
warming,
drought
has
become
one
most
critical
stress
factors
affecting
plant
growth
and
productivity.
The
objective
this
study
was
to
investigate
morphological,
physiological,
biochemical,
molecular
responses
21
different
pepper
genotypes
under
conditions
water
deficit.
Water
deficit
treatments
were
applied
in
during
seedling
period
using
two
irrigation
levels
(100
60%
field
capasity).
resulted
reduction
parameters
such
as
fresh
dry
weight,
leaf
area.
Furthermore,
there
an
increase
malondialdehyde
(MDA)
levels,
while
tissue
content,
photosynthetic
activity,
transpiration,
CO2
stomatal
conductance,
chlorophyll
content
decreased.
led
hydrogen
peroxide
(H2O2),
abscisic
acid,
proline
sucrose
well
enhancement
activities
antioxidant
enzymes,
including
superoxide
dismutase
(SOD),
peroxidase
(POD),
catalase
(CAT).
expression
genes
associated
with
response
quantified
quantitative
reverse
transcription
polymerase
chain
reaction
(qRT-PCR),
revealing
significant
inter-genotypic
variations.
In
particular,
enzyme
CaSOD
CaCAT,
responsible
for
scavenging
reactive
oxygen
species
(ROS),
exhibited
among
genotypes.
Downregulation
CaDHN3
aquaporin
(AQP)
gene
increased
CaDRT1
observed
conditions.
These
findings
underline
diversity
tolerance
mechanisms
offers
crucial
insights
into
plants
drought,
establishing
a
foundation
future
research
aimed
at
enhancing
resilience
plants.
BMC Plant Biology,
Journal Year:
2024,
Volume and Issue:
24(1)
Published: May 18, 2024
Abstract
Background
Salinity
is
one
major
abiotic
stress
affecting
photosynthesis,
plant
growth,
and
development,
resulting
in
low-input
crops.
Although
photosynthesis
underlies
the
substantial
productivity
biomass
storage
of
crop
yield,
response
sunflower
photosynthetic
machinery
to
salinity
imposition
how
H
2
S
mitigates
salinity-induced
injury
remains
largely
unclear.
Seed
priming
with
0.5
mM
NaHS,
as
a
donor
S,
was
adopted
analyze
this
issue
under
NaCl
stress.
Primed
nonprime
seeds
were
established
nonsaline
soil
irrigated
tape
water
for
14
d,
then
seedlings
exposed
150
7
d
controlled
growth
conditions.
Results
significantly
harmed
parameters,
structural
integrity
chloroplasts,
mesophyll
cells.
improved
relative
content,
stomatal
density
aperture,
pigments,
photochemical
efficiency
PSII,
performance,
soluble
sugar
well
protein
contents
while
reducing
proline
ABA
salinity.
also
boosted
transcriptional
level
ribulose
1,5-bisphosphate
carboxylase
small
subunit
gene
(
HaRBCS
).
Further,
transmission
electron
microscope
showed
that
stress,
cells
maintained
their
cell
membrane
integrated
chloroplasts
well-developed
thylakoid
membranes.
Conclusion
The
results
underscore
importance
maintaining
efficiency,
Rubisco
activity,
preserving
chloroplast
structure
which
participates
adaptation,
possibly
imposition.
This
underpins
retaining
minimizing
be
crucial
trait
Plants,
Journal Year:
2023,
Volume and Issue:
12(13), P. 2450 - 2450
Published: June 26, 2023
Hydrogen
sulfide
(H2S)
is
involved
in
the
regulation
of
plant
salt
stress
as
a
potential
signaling
molecule.
This
work
investigated
effect
H2S
on
cucumber
growth,
photosynthesis,
antioxidation,
ion
balance,
and
other
tolerance
pathways.
The
height,
stem
diameter,
leaf
area
photosynthesis
seedlings
were
significantly
inhibited
by
50
mmol·L-1
NaCl.
Moreover,
NaCl
treatment
induced
superoxide
anion
(O2·-)
Na+
accumulation
affected
absorption
mineral
ions.
On
contrary,
exogenous
spraying
200
μmol·L-1
sodium
hydrosulfide
(NaHS)
maintained
growth
seedlings,
increased
enhanced
ascorbate-glutathione
cycle
(AsA-GSH),
promoted
ions
under
stress.
Meanwhile,
NaHS
upregulated
SOS1,
SOS2,
SOS3,
NHX1,
AKT1
genes
to
maintain
Na+/K+
balance
relative
expression
MAPK3,
MAPK4,
MAPK6,
MAPK9
enhance
tolerance.
These
positive
effects
could
be
reversed
150
propargylglycine
(PAG,
specific
inhibitor
biosynthesis).
results
indicated
that
mitigate
damage
cucumber,
mainly
improving
enhancing
AsA-GSH
cycle,
reducing
ratio,
inducing
SOS
pathway
MAPK
pathway.
PeerJ,
Journal Year:
2023,
Volume and Issue:
11, P. e15881 - e15881
Published: Aug. 24, 2023
Hydrogen
sulfide
(H
2
S),
as
an
endogenous
gas
signaling
molecule,
plays
important
role
in
plant
growth
regulation
and
resistance
to
abiotic
stress.
This
study
aims
investigate
the
mechanism
of
exogenous
H
S
on
development
Reaumuria
soongorica
seedlings
under
salt
stress
determine
optimal
concentration
for
foliar
application.
To
regulatory
effects
(donor
sodium
hydrosulfide,
NaHS)
at
concentrations
ranging
from
0
1
mM
reactive
oxygen
species
(ROS),
antioxidant
system,
osmoregulation
R.
300
NaCl
The
was
inhibited
by
stress,
which
resulted
a
decrease
leaf
relative
water
content
(LRWC),
specific
area
(SLA),
soluble
sugar
leaves,
elevated
activity
levels
superoxide
dismutase
(SOD),
peroxidase
(POD),
catalase
(CAT);
accumulated
anion
(O
–
),
proline,
malondialdehyde
(MDA),
protein
leaves;
increased
L-cysteine
desulfhydrase
(LCD)
content.
indicated
that
high
level
ROS
produced
leaves
seriously
affected
seedlings.
application
different
NaHS
reduced
O
,
proline
MDA,
enzymes
osmoregulators
(soluble
sugars
proteins),
while
LCD
enzyme
were
further
with
continuous
S.
inhibitory
rate
height
ground
diameter,
LRWC,
biomass,
SLA
effectively
alleviated.
A
comprehensive
analysis
showed
POD,
could
be
used
main
indicators
evaluate
alleviating
effect
0.025
mM.
provides
theoretical
foundation
understanding
tolerance
cultivating
high-quality
germplasm
resources.
