International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
26(1), С. 200 - 200
Опубликована: Дек. 29, 2024
Ca
and
Mg
are
essential
micronutrients
for
plant
growth,
they
play
a
crucial
role
in
development
responses
to
adversity
by
influencing
the
activities
of
endogenous
hormones
antioxidant
enzymes.
However,
specific
mechanisms
through
which
calcium
(Ca)
magnesium
(Mg)
regulate
kernel
sugar
content
enzymes
remain
unclear.
In
this
study,
we
analyzed
impact
on
physiology
maize
leaves
quality
determining
hormones,
when
supplemented
with
different
levels
Mg.
Our
main
findings
were
as
follows:
(1)
Elevated
augmented
superoxide
dismutase
(SOD)
activity,
bolstering
defenses,
whereas
low
diminished
SOD
activity.
High
enhanced
catalase
(CAT)
activity
during
development.
Low−Ca
conditions
stimulated
gibberellin
(GA)
synthesis,
while
high−Ca
high−Mg
suppressed
it.
also
elevated
abscisic
acid
(ABA)
levels,
potentially
improving
stress
tolerance.
(2)
increased
reducing
kernels,
augmenting
energy
supply,
both
high
soluble
sugars,
specifically
enhancing
sucrose
content,
is
critical
reserve
plants.
(3)
CAT
exerted
pivotal
regulatory
accumulation
kernels.
GA,
under
influence
Ca,
modulated
contents
inhibiting
CAT,
ABA,
Mg,
promoted
thereby
affecting
content.
This
study
reveals
new
mechanism
addition
kernels
enzyme
activities.
These
not
only
enhance
our
understanding
growth
but
provide
strategies
crop
yield
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Март 13, 2024
For
the
past
300
years,
hydrogen
sulfide
(H
2
S)
has
been
considered
a
toxic
gas.
Nowadays,
it
found
to
be
novel
signaling
molecule
in
plants
involved
regulation
of
cellular
metabolism,
seed
germination,
plant
growth,
development,
and
response
environmental
stresses,
including
high
temperature
(HT)
low
(LT).
As
molecule,
H
S
can
actively
synthesized
degraded
cytosol,
chloroplasts,
mitochondria
cells
by
enzymatic
non-enzymatic
pathways
maintain
homeostasis.
To
date,
receptors
for
have
not
found.
It
usually
exerts
physiological
functions
through
persulfidation
target
proteins.
In
10
gained
much
attention.
Therefore,
this
review,
based
on
that
same
attention,
homeostasis,
protein
persulfidation,
role
HT
LT
stress
were
summarized.
Also,
common
mechanisms
S-induced
tolerance
updated.
These
involve
restoration
biomembrane
integrity,
synthesis
proteins,
enhancement
antioxidant
system
methylglyoxal
(MG)
detoxification
system,
improvement
water
homeostasis
reestablishment
Ca
2+
acid-base
balance.
updates
lay
foundation
further
understanding
acquiring
temperature-stress-resistant
crops
develop
sustainable
food
agriculture.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(12), С. 6598 - 6598
Опубликована: Июнь 15, 2024
Hydrogen
sulfide
(H2S)
is
a
novel
gasotransmitter.
Sucrose
(SUC)
source
of
cellular
energy
and
signaling
molecule.
Maize
the
third
most
common
food
crop
worldwide.
However,
interaction
H2S
SUC
in
maize
thermotolerance
not
widely
known.
In
this
study,
using
seedlings
as
materials,
metabolic
functional
interactions
were
investigated.
The
data
show
that
under
heat
stress,
survival
rate
tissue
viability
increased
by
exogenous
SUC,
while
malondialdehyde
content
electrolyte
leakage
reduced
indicating
could
increase
thermotolerance.
Also,
SUC-promoted
was
enhanced
H2S,
separately
weakened
an
inhibitor
(propargylglycine)
scavenger
(hypotaurine)
SUC-transport
(N-ethylmaleimide),
suggesting
development
To
establish
underlying
mechanism
H2S–SUC
interaction-promoted
thermotolerance,
redox
parameters
mesocotyls
measured
before
after
stress.
indicate
activity
gene
expression
H2S-metabolizing
enzymes
up-regulated
whereas
had
no
significant
effect
on
SUC-metabolizing
enzymes.
addition,
catalase,
glutathione
reductase,
ascorbate
peroxidase,
dehydroascorbate
monodehydroascorbate
superoxide
dismutase
reinforced
their
combination
non-heat
conditions
to
varying
degrees.
Similarly,
ascorbic
acid,
flavone,
carotenoid,
polyphenol
combination,
production
radicals
hydrogen
peroxide
level
impaired
these
treatments
different
extents.
These
results
imply
sucrose
exist
formation
through
homeodynamics.
This
finding
lays
theoretical
basis
for
developing
climate-resistant
crops
improving
security.
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(3), С. 1283 - 1283
Опубликована: Фев. 2, 2025
Global
warming
poses
a
significant
threat
to
crop
production
and
food
security,
with
maize
(Zay
mays
L.)
particularly
vulnerable
high-temperature
stress
(HTS).
This
review
explores
the
detrimental
impacts
of
elevated
temperatures
on
development
across
various
growth
stages,
analyzed
within
source–sink
framework,
particular
focus
seed
setting
yield
reduction.
It
provides
broad
analysis
cellular
molecular
responses
HTS,
highlighting
key
roles
plant
hormone
abscisic
acid
(ABA)
signaling,
calcium
chloroplast,
DNA
damage
repair
(DDR)
system
in
maize.
HTS
disrupts
ABA
signaling
pathways,
impairing
stomatal
regulation
reducing
water-use
efficiency,
while
orchestrates
by
activating
heat
shock
proteins
other
protective
mechanisms.
Chloroplasts,
as
central
photosynthesis,
are
sensitive
often
exhibiting
photosystem
II
chlorophyll
degradation.
Recent
studies
also
highlight
significance
DDR
system,
genes
like
ZmRAD51C
playing
crucial
maintaining
genomic
stability
during
reproductive
organ
development.
under
conditions
emerges
factor
contributing
reduced
set,
although
precise
mechanisms
remain
be
fully
elucidated.
Furthermore,
examines
cutting-edge
genetic
improvement
strategies,
aimed
at
developing
thermotolerant
cultivars.
These
recent
research
advances
underscore
need
for
further
investigation
into
basis
thermotolerance
open
door
future
advancements
breeding
crops.
Ecotoxicology and Environmental Safety,
Год журнала:
2024,
Номер
276, С. 116307 - 116307
Опубликована: Апрель 8, 2024
In
recent
decades,
there
has
been
increasing
interest
in
elucidating
the
role
of
sulfur-containing
compounds
plant
metabolism,
particularly
emphasizing
their
function
as
signaling
molecules.
Among
these,
thiocyanate
(SCN
Hydrogen
sulfide
(H2S)
is
a
novel
gasotransmitter,
sucrose
(SUC)
both
cellular
energy
and
signaling
molecule.
However,
their
interaction
in
maize
thermotolerance
poorly
known.
In
this
study,
using
seedlings
as
materials,
metabolic
functional
of
H2S
SUC
was
investigated.
Data
show
that
under
heat
stress
survival
rate
tissue
viability
were
increased
by
exogenous
SUC,
while
malondialdehyde
content
electrolyte
leakage
decreased
indicating
could
upraise
thermotolerance.
Also,
SUC-upraised
enhanced
H2S,
weakened
inhibitor
(propargylglycine)
scavenger
(hypotaurine)
SUC-transport
(N-ethylmaleimide).
To
figure
out
underlying
mechanism
H2S-SUC
interaction-upraised
thermotolerance,
redox
parameters
mesocotyls
measured
before
after
stress.
The
data
display
activity
gene
expression
H2S-metabolizing
enzymes
up-regulated
whereas
had
no
significant
effect
on
SUC-metabolizing
enzymes.
Besides,
catalase,
glutathione
reductase,
ascorbate
peroxidase,
dehydroascorbate
monodehydroascorbate
superoxide
dismutase
reinforced
combination
non-heat
conditions
varying
degrees.
Similarly,
ascorbic
acid,
flavone,
carotenoid,
polyphenol
combination,
production
radical
hydrogen
peroxide
level
impaired
these
treatments
to
different
extent.
These
results
imply
the
exists
formation
through
homeodynamics.
