Journal of Agricultural and Food Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 31, 2024
Flavonoids
are
naturally
occurring
compounds
found
in
fruits,
vegetables,
and
other
plant-based
foods,
they
known
for
their
health
benefits,
such
as
UV
protection,
antioxidant,
anti-inflammatory,
antiproliferative
properties.
This
study
investigates
whether
flavonoids,
quercetin
2,3-dehydrosilybin,
can
act
photoactivatable
carbon
monoxide
(CO)-releasing
molecules
under
physiological
conditions.
CO
has
been
recently
recognized
an
important
signaling
molecule.
Here,
we
show
that
upon
direct
irradiation,
was
released
from
both
flavonoids
PBS
with
chemical
yields
of
up
to
0.23
equiv,
which
increased
almost
unity
by
sensitized
photooxygenation
involving
singlet
oxygen.
Photoreleased
reduced
cellular
toxicity
caused
high
flavonol
concentrations,
partially
restored
mitochondrial
respiration,
superoxide
production
induced
rotenone
levels,
influenced
the
G0/G1
G2/M
phases
cell
cycle,
showing
effects.
The
findings
highlight
potential
2,3-dehydrosilybin
CO-photoreleasing
chemopreventive
therapeutic
implications
human
pathology
suggest
possible
roles
plant
biology.
Abstract
Background
Drought
is
thought
to
be
a
major
abiotic
stress
that
dramatically
limits
tomato
growth
and
production.
As
signal
molecule,
melatonin
(MT)
carbon
monoxide
(CO)
can
enhance
plant
resistance.
However,
the
effect
underlying
mechanism
of
CO
involving
MT-mediated
drought
resistance
in
seedling
remains
unknown.
In
this
study,
(
Solanum
lycopersicum
L.
‘Micro-Tom’)
seedlings
were
used
investigate
interaction
MT
response
stress.
Results
The
was
inhibited
significantly
under
Exogenous
or
mitigated
drought-induced
impairment
dose-dependent
manner,
with
greatest
efficiency
provided
by
100
500
µM,
respectively.
But
application
hemoglobin
(Hb,
scavenger)
restrained
positive
effects
on
treatment
promoted
chlorophyll
(Chl
a)
b)
accumulations.
Under
stress,
intermediate
products
biosynthesis
such
as
protoporphyrin
IX
(Proto
IX),
Mg-protoporphyrin
(Mg-Proto
potochlorophyllide
(Pchlide)
heme
increased
CO,
but
uroporphyrinogen
III
(Uro
III)
content
decreased
MT-treated
CO-treated
seedlings.
Meanwhile,
up-regulated
expression
synthetic-related
genes
SlUROD
,
SlPPOX
SlMGMT
SlFECH
SlPOR
SlChlS
SlCAO
.
almost
reversed
Hb.
Conclusion
results
suggested
alleviate
facilitate
synthesis
Chl
played
an
essential
role
MT-enhanced
via
facilitating
pathway.
Plant Stress,
Год журнала:
2023,
Номер
11, С. 100316 - 100316
Опубликована: Дек. 8, 2023
Strigolactones
(SLs)
and
hydrogen
sulfide
(H2S)
have
both
been
shown
to
play
important
roles
in
plant
growth,
development,
environmental
adaption.
At
present,
there
was
no
reported
on
the
mechanism
by
which
SLs
might
participate
H2S-induced
salt
tolerance.
In
this
study,
tomato
(Solanum
lycopersicum
L.
'Micro-Tom')
used
investigate
role
of
H2S
their
relationship
under
stress.
Our
results
show
that
25
µM
donor
sodium
hydrosulfide
(NaHS)
15
synthetic
analogue
GR24
significantly
promoted
seedling
growth
TIS108
(3
µM,
a
synthesis
inhibitor)
hypotaurine
(HT,
300
scavenger)
inhibited
positive
NaHS
stress,
respectively.
Meanwhile,
treatment
increased
endogenous
SL
content,
activity
synthesis-related
enzymes
CCD7
CCD8,
expression
genes
(SlD27,
SlD14,
SlMAX1,
SlMAX2)
Further,
after
silencing
gene
SlD27,
relieving
stress
basically
eliminated.
Silencing
SlD27
decreased
while
did
not
enhance
content
SlD27-silencing
seedling.
Therefore,
tolerance
seedlings
up-regulating
SlD27.
Dalton Transactions,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Though
CO
is
a
significant
environmental
pollutant,
it
serves
pivotal
role
as
signaling
molecule
in
plants.
A
novel
fluorescent
nanodot
has
been
developed
for
vivo
monitoring
of
inside
the
plant
cells.
Phyton,
Год журнала:
2023,
Номер
93(1), С. 45 - 61
Опубликована: Дек. 26, 2023
Carbon
monoxide
(CO)
and
nitric
oxide
(NO)
are
signal
molecules
that
enhance
plant
adaptation
to
environmental
stimuli.Auxin
is
an
essential
phytohormone
for
growth
development.CO
NO
play
crucial
roles
in
modulating
the
plant's
response
iron
deficiency.Iron
deficiency
leads
increase
activity
of
heme
oxygenase
(HO)
subsequent
generation
CO.Additionally,
it
alters
polar
subcellular
distribution
Pin-Formed
1
(PIN1)
proteins,
resulting
enhanced
auxin
transport.This
alteration,
turn,
accumulation.Furthermore,
enhances
ferric
chelate
reductase
(FCR),
as
well
expression
Fer-like
deficiency-induced
transcription
factor
(FIT)
reduction
oxidase
2
(FRO2)
genes
roots.Overexpression
long
hypocotyl
(HY1)
gene,
which
encodes
oxygenase,
or
CO
donor
treatment
resulted
basipetal
transport,
higher
FCR
activity,
FIT
FRO2
under
Fe
deficiency.Here,
a
potential
mechanism
proposed:
interact
with
address
stress.CO
enhancing
its
accumulation
roots
up-regulating
key
iron-related
like
IRT1.Elevated
levels
affect
signaling,
leading
greater
sensitivity
root
development.This
interplay
promotes
absorption.Together,
these
uptake
growth,
revealing
novel
aspect
physiology
adapting
stress.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
26(1), С. 223 - 223
Опубликована: Дек. 30, 2024
Carbon
monoxide
(CO)
is
recognized
as
a
signaling
molecule
in
plants,
inducing
various
physiological
responses.
This
article
briefly
examines
the
functions
of
CO
seed
biology
and
seedlings'
responses
to
environmental
stresses.
The
activity
heme
oxygenase
(HO),
main
enzyme
responsible
for
synthesis,
key
factor
controlling
levels
plant
cells.
can
influence
germination
by
regulating
dormancy
through
interactions
with
genes
hormones.
Additionally,
positively
affects
seedling
growth
enhancing
antioxidant
system,
thereby
increasing
resistance
oxidative
damage
caused
stress.
has
beneficial
effects
on
root
development,
length,
stomatal
closure,
regulation
photosynthetic
system.
Its
interaction
reactive
oxygen
species
(ROS)
mediates
hormone-
light-dependent
processes
during
early
stages
development
under
Furthermore,
interacts
other
molecules,
such
nitric
oxide
(NO),
molecular
hydrogen
(H
