Photosynthetica,
Год журнала:
2024,
Номер
62(1), С. 58 - 70
Опубликована: Янв. 26, 2024
Improper
use
of
nicosulfuron
(NSF)
may
induce
harmful
effects
on
plants
during
weed
control.
Melatonin
(MT)
regulates
photosynthetic
and
physiological
processes
in
plants.
This
study
aimed
to
explore
the
MT
alleviating
NSF
toxicity
by
measuring
growth
parameters,
capacity,
antioxidative
responses
sweet
corn
seedlings.
Compared
alone,
exogenous
increased
chlorophyll
content,
transpiration
rate,
net
stomatal
conductance,
maximum
efficiency
PSⅡ
photochemistry,
while
reduced
malondialdehyde,
hydrogen
peroxide,
superoxide
anion
radical,
proline
contents.
Moreover,
also
activity
ascorbate
peroxidase
expression
levels
of
ZmAPX1,
ZmAPX2,
ZmALS1,
ZmCYP81A9.
The
inhibition
p-chlorophenylalanine
inhibited
positive
indexes.
results
indicated
that
pretreatment
with
might
effectively
mitigate
Plant Stress,
Год журнала:
2024,
Номер
11, С. 100410 - 100410
Опубликована: Фев. 24, 2024
Melatonin
is
a
hormone-like
substance
that
serves
as
secondary
metabolite
associated
with
variety
of
physiological,
hormonal,
and
natural
processes
at
the
cell,
tissue,
organ
levels.
It
acts
plant
biostimulant
increase
tolerance
against
abiotic
stresses
like
ssalinity,
drought,
heat,
cold
heavy
metals.
in
plants,
also
called
phytomelatonin,
participating
cellular
mechanisms
ameliorates
oxidative
toxicity,
hence
helps
to
stand
stress
conditions.
These
exclusive
properties
strengthen
defense
capacity
by
stimulating
detoxification
reactive
oxygen
species
(ROS),
promoting
physiological
attributes,
activation
stress-responsive
genes
ameliorate
toxicity
caused
stress.
As
key
molecule,
it
exhibits
several
important
molecular
interactions
nitric
oxide
(NO),
calcium
(Ca2+),
hydrogen
peroxide
(H2O2)
sulfide
(H2S).
In
this
review
article,
we
discuss
salient
role
melatonin
morphological
adaptation
well
its
involvement
mitigation.
Besides,
under
stress,
interaction
NO,
Ca2+,
H2O2,
H2S
has
been
demonstrated.
This
study
will
provide
reference
for
elucidating
regulatory
mechanism
influencing
resistance
plants.
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(3), С. 1171 - 1171
Опубликована: Янв. 29, 2025
In
order
to
analyze
the
physiological
regulation
mechanisms
associated
with
exogenous
melatonin
on
rice
blast,
this
study
treated
seedlings
different
concentrations
of
(0,
20,
100,
and
500
µmol/L)
in
investigate
growth
characteristics,
root
morphology,
superoxide
dismutase
(SOD)
activity,
peroxidase
(POD)
catalase
(CAT)
malondialdehyde
(MDA)
content,
hydrogen
peroxide
(H2O2)
soluble
protein
content
seedlings.
The
results
indicated
that
100
µmol/L
exhibited
a
significant
effect,
improving
antioxidant
capacity
under
blast
fungus
infection.
disease
resistance
level
against
significantly
decreased
by
31.58%
when
compared
0
treatment,
while
plant
height,
stem
base
width,
leaf
area,
total
length,
aboveground
dry
weight,
fresh
underground
weight
increased
8.72%
91.38%.
Treatment
activities
respective
increases
94.99%
31.14%.
Simultaneously,
contents
decreased,
reaching
18.65%
38.87%,
respectively.
gray
relational
grade
analysis
exhibit
highest
grades
concentration
and,
so,
can
be
used
evaluate
effect
severity
Furthermore,
membership
function
revealed
treatment
had
value,
indicating
improvement
disease.
conclusion,
enhances
through
promoting
their
strengthening
defenses.
This
provides
new
insights
into
tolerance
Plant Stress,
Год журнала:
2023,
Номер
9, С. 100198 - 100198
Опубликована: Авг. 7, 2023
The
prevalence
of
electromagnetic
fields
(EMFs)
caused
by
radiation
is
increasing
in
our
daily
lives,
potentially
bringing
both
adverse
and
beneficial
effects.
EMFs
have
garnered
significant
research
attention
various
disciplines,
including
agricultural
science.
However,
understanding
the
impact
on
ecophysiological
performance
plants
under
suboptimal
conditions
limited.
Despite
this,
there
are
indications
that
can
improve
crop
productivity
enhancing
seed
germination,
plant
nutrition,
precision
farming,
water
use
efficiency,
root
hydraulic
conductance,
uptake,
anti-oxidative
defense,
pest
prevention,
stress
signaling,
hormonal
pathways.
This
review
highlights
practical
application
for
biomass
production
elucidating
underlying
mechanisms
involved
growth,
relations,
ion
flux,
photosynthesis,
antioxidant
defense.
We
also
highlight
prospects
using
sustainable
agriculture
their
potential
to
alleviate
conventional
pressures
related
food
security
issues.
Open Life Sciences,
Год журнала:
2023,
Номер
18(1)
Опубликована: Янв. 1, 2023
Melatonin
is
a
potent
antioxidant
that
can
prevent
plant
damage
caused
by
adverse
stresses.
It
remains
unclear
whether
exogenous
melatonin
mitigate
the
effects
of
salt
stress
on
seed
germination
and
seedling
growth
sorghum
(Sorghum
bicolor
(L.)
Moench).
The
aim
this
study
was
to
decipher
protective
mechanisms
(100
μmol/L)
seedlings
under
NaCl-induced
(120
mmol/L).
Plant
morphological,
photosynthetic,
physiological
characteristics
were
analyzed
at
different
timepoints
after
sowing.
Results
showed
inhibited
germination,
growth,
biomass
accumulation
reducing
photosynthetic
pigment
contents,
efficiency,
root
vigor,
mineral
uptake.
In
contrast,
priming
with
enhanced
biosynthesis,
K+
content
stress.
application
additionally
activities
enzymes
(superoxide
dismutase,
catalase,
ascorbate
peroxidase,
glutathione
reductase)
increased
levels
non-enzymatic
antioxidants
(reduced
glutathione,
ascorbic
acid)
in
leaves.
These
changes
accompanied
increase
leaf
contents
soluble
sugars,
proteins,
proline,
as
well
decrease
hydrogen
peroxide
accumulation,
malondialdehyde
content,
electrolyte
leakage.
Our
findings
indicate
alleviate
stress-induced
through
multifaceted
mechanisms,
such
improving
performance
facilitating
ion
homeostasis
osmoregulation,
promoting
defense
reactive
oxygen
species
scavenging.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Июль 10, 2024
Abstract
Salinity
stress
poses
a
significant
treat
to
crop
yields
and
product
quality
worldwide.
Application
of
humic
acid
bio
stimulant
grafting
onto
tolerant
rootstocks
can
both
be
considered
sustainable
agronomic
practices
that
effectively
ameliorate
the
negative
effects
salinity
stress.
This
study
aimed
assess
above
mentioned
ameliorative
on
cucumber
plants
subjected
saline
environments.
To
attain
this
goal
factorial
experiment
was
carried
out
in
form
completely
randomized
design
with
three
replications.
The
factors
were
(a)
different
levels
(0,
5,
10
dS
m
−1
NaCl),
(b)
foliar
application
at
100,
200
mg
L
),
(c)
grafted
ungrafted
plants.
Vegetative
traits
including
plant
height,
fresh
dry
weight
number
leaf
exhibited
decrease
under
increasing
However,
mitigated
these
compared
control
reduction
relative
water
content
(RWC)
caused
by
salinity,
compensated
grafting.
Thus,
highest
RWC
(86.65%)
observed
0
NaCl
20
acid.
Electrolyte
leakage
(EL)
increased
stress,
but
improved
trait
lowest
amount
EL
(26.95%)
catalase
(0.53
mmol
H
2
O
g
fw
min
)
peroxidase
(12.290
enzymes
treatment
total
phenol
(1.99
FW),
flavonoid
(0.486
soluble
carbohydrate
(30.80
protein
(34.56
proline
(3.86
µg
FW)
Phenolic
acids
phenylalanine
ammonia
lyase
(PAL)
polyphenol
oxidase
(PPO)
levels.
Contrary
acid,
salt
sodium
(Na
+
chlorine
(Cl
−
decreased
potassium
(K
calcium
(Ca
2+
root
cucumber.
appeared
mitigate
effects,
thereby
suggesting
potential
role
moderating
physiological
processes
improving
growth
According
obtained
results,
spraying
(200
use
resistant
are
recommended
increase
tolerance
These
for
first
time,
clearly
demonstrated
fig
gourd
new
highly
salt-tolerant
rootstock,
enhances
improves
yield
reducing
transport
shoot
compatible
osmolytes.
