Antioxidants,
Journal Year:
2021,
Volume and Issue:
10(11), P. 1686 - 1686
Published: Oct. 26, 2021
Protein
persulfidation
is
a
post-translational
modification
(PTM)
mediated
by
hydrogen
sulfide
(H2S),
which
affects
the
thiol
group
of
cysteine
residues
from
target
proteins
and
can
have
positive,
negative
or
zero
impact
on
protein
function.
Due
to
advances
in
proteomic
techniques,
number
potential
targets
identified
higher
plants,
are
affected
this
PTM,
has
increased
considerably.
However,
its
precise
biological
function
needs
be
evaluated
at
experimental
level
purified
order
identify
specific
cysteine(s)
residue(s)
affected.
It
also
cellular
redox
given
interactions
among
different
oxidative
modifications
(oxiPTMs),
such
as
S-nitrosation,
glutathionylation,
sulfenylation,
S-cyanylation
S-acylation,
affect
groups.
This
review
aims
provide
an
updated
comprehensive
overview
important
physiological
role
exerted
acts
mechanism
protection
against
irreversible
oxidation.
Redox Biology,
Journal Year:
2023,
Volume and Issue:
64, P. 102805 - 102805
Published: June 30, 2023
Plants
being
sessile
in
nature,
are
exposed
to
unwarranted
threats
as
a
result
of
constantly
changing
environmental
conditions.
These
adverse
factors
can
have
negative
impacts
on
their
growth,
development,
and
yield.
Hormones
key
signaling
molecules
enabling
cells
respond
rapidly
different
external
internal
stimuli.
In
plants,
melatonin
(MT)
plays
critical
role
the
integration
various
signals
activation
stress-response
networks
develop
defense
mechanisms
plant
resilience.
Additionally,
tackle
stress-induced
alteration
cellular
redox
equilibrium
by
regulating
expression
hemostasis-related
genes
proteins.
The
purpose
this
article
is
compile
summarize
scientific
research
pertaining
MT's
effects
plants'
resilience
biotic
abiotic
stresses.
Here,
we
summarized
that
MT
exerts
synergistic
effect
with
other
phytohormones,
for
instance,
ethylene,
jasmonic
acid,
salicylic
activates
defense-related
against
phytopathogens.
Furthermore,
interacts
secondary
messengers
like
Ca2+,
nitric
oxide,
reactive
oxygen
species
regulate
network.
This
interaction
triggers
transcription
alleviate
stress-related
responses
plants.
Hence,
synergic
diverse
hormones
demonstrates
phytomelatonin's
importance
influencing
multiple
contribute
harsh
factors.
Journal of Experimental Botany,
Journal Year:
2021,
Volume and Issue:
72(16), P. 5893 - 5904
Published: May 24, 2021
Hydrogen
sulfide
(H2S)
is
a
signaling
molecule
that
regulates
critical
processes
and
allows
plants
to
adapt
adverse
conditions.
The
molecular
mechanism
underlying
H2S
action
relies
on
its
chemical
reactivity,
the
most-well
characterized
persulfidation,
which
involves
modification
of
protein
thiol
groups,
resulting
in
formation
persulfide
groups.
This
causes
change
function,
altering
catalytic
activity
or
intracellular
location
inducing
important
physiological
effects.
cannot
react
directly
with
thiols
but
instead
can
oxidized
cysteine
residues;
therefore,
H2O2
through
sulfenylation
required
for
persulfidation.
A
comparative
study
performed
this
review
reveals
82%
identity
between
sulfenylome
persulfidome.
With
regard
abscisic
acid
(ABA)
signaling,
widespread
evidence
shows
an
interconnection
ABA
plant
response
environmental
stress.
Proteomic
analyses
have
revealed
persulfidation
several
proteins
involved
network
shown
triggered
ABA.
In
guard
cells,
complex
interaction
has
also
been
described,
specific
components
seems
be
mechanism.
Plant and Cell Physiology,
Journal Year:
2022,
Volume and Issue:
63(7), P. 889 - 900
Published: March 21, 2022
Abstract
The
thiol
group
of
cysteine
(Cys)
residues,
often
present
in
the
active
center
protein,
is
particular
importance
to
protein
function,
which
significantly
determined
by
redox
state
a
protein’s
environment.
Our
knowledge
different
thiol-based
oxidative
posttranslational
modifications
(oxiPTMs),
compete
for
specific
groups,
has
increased
over
last
10
years.
principal
oxiPTMs
include
S-sulfenylation,
S-glutathionylation,
S-nitrosation,
persulfidation,
S-cyanylation
and
S-acylation.
role
each
oxiPTM
depends
on
cellular
state,
turn
homeostasis
under
either
optimal
or
stressful
conditions.
Under
such
conditions,
metabolism
molecules
as
glutathione,
NADPH
(reduced
nicotinamide
adenine
dinucleotide
phosphate),
nitric
oxide,
hydrogen
sulfide
peroxide
can
be
altered,
exacerbated
and,
consequently,
outside
cell’s
control.
This
review
provides
broad
overview
these
physiological
unfavorable
regulate
function
target
proteins.
Antioxidants,
Journal Year:
2022,
Volume and Issue:
11(8), P. 1478 - 1478
Published: July 28, 2022
Rising
temperatures
worldwide
due
to
global
climate
change
are
a
major
scientific
issue
at
present.
The
present
study
reports
the
effects
of
gaseous
signaling
molecules,
ethylene
(200
µL
L-1;
2-chloroethylphosphonic
acid;
ethephon,
Eth),
nitric
oxide
(NO;
100
µM
sodium
nitroprusside;
SNP),
and
hydrogen
sulfide
(H2S;
200
hydrosulfide,
NaHS)
in
high
temperature
stress
(HS)
tolerance,
whether
or
not
H2S
contributes
NO-induced
thermo-tolerance
photosynthetic
protection
rice
(Oryza
sativa
L.)
cultivars,
i.e.,
Taipei-309,
Rasi.
Plants
exposed
an
HS
40
°C
for
six
h
per
day
15
days
caused
reduction
biomass,
associated
with
decreased
photosynthesis
leaf
water
status.
High
increased
oxidative
by
increasing
content
peroxide
(H2O2)
thiobarbituric
acid
reactive
substance
(TBARS)
leaves.
These
molecules
status,
osmolytes,
antioxidants,
plants
under
non-stress
stress.
However,
effect
was
more
conspicuous
than
NO
H2S.
application
scavenger
hypotaurine
(HT)
reversed
on
HS.
This
supports
findings
that
ameliorating
Eth
SNP
involved
Thus,
presence
can
enhance
while
also
protecting
plant
photosynthesis.
Antioxidants and Redox Signaling,
Journal Year:
2023,
Volume and Issue:
39(1-3), P. 19 - 39
Published: June 8, 2023
Significance:
Protein
persulfidation
(the
formation
of
RSSH),
an
evolutionarily
conserved
oxidative
posttranslational
modification
in
which
thiol
groups
cysteine
residues
are
converted
into
persulfides,
has
emerged
as
one
the
main
mechanisms
through
hydrogen
sulfide
(H2S)
conveys
its
signaling.
Recent
Advances:
New
methodological
advances
persulfide
labeling
started
unraveling
chemical
biology
this
and
role
(patho)physiology.
Some
key
metabolic
enzymes
regulated
by
persulfidation.
RSSH
levels
important
for
cellular
defense
against
injury,
they
decrease
with
aging,
leaving
proteins
vulnerable
to
damage.
Persulfidation
is
dysregulated
many
diseases.
Critical
Issues:
A
relatively
new
field
signaling
protein
still
unanswered
questions:
mechanism(s)
transpersulfidation
identification
"protein
persulfidases,"
improvement
methods
monitor
changes
identify
targets,
understanding
controls
(patho)physiological
functions.
Future
Directions:
Deep
mechanistic
studies
using
more
selective
sensitive
techniques
will
provide
high-resolution
structural,
functional,
quantitative,
spatiotemporal
information
on
dynamics
help
better
how
H2S-derived
affects
structure
function
health
disease.
This
knowledge
could
pave
way
targeted
drug
design
a
wide
variety
pathologies.
Antioxid.
Redox
Signal.
39,
19-39.
Journal of Experimental Botany,
Journal Year:
2023,
Volume and Issue:
74(15), P. 4654 - 4669
Published: May 6, 2023
Abstract
Hydrogen
sulfide
(H2S)
is
a
signaling
molecule
that
regulates
essential
plant
processes.
In
this
study,
the
role
of
H2S
during
drought
was
analysed,
focusing
on
underlying
mechanism.
Pretreatments
with
before
imposing
plants
substantially
improved
characteristic
stressed
phenotypes
under
and
decreased
levels
typical
biochemical
stress
markers
such
as
anthocyanin,
proline,
hydrogen
peroxide.
also
regulated
drought-responsive
genes
amino
acid
metabolism,
repressed
drought-induced
bulk
autophagy
protein
ubiquitination,
demonstrating
protective
effects
pretreatment.
Quantitative
proteomic
analysis
identified
887
significantly
different
persulfidated
proteins
between
control
plants.
Bioinformatic
analyses
more
in
revealed
most
enriched
biological
processes
were
cellular
response
to
oxidative
peroxide
catabolism.
Protein
degradation,
abiotic
responses,
phenylpropanoid
pathway
highlighted,
suggesting
importance
persulfidation
coping
stress.
Our
findings
emphasize
promoter
enhanced
tolerance
drought,
enabling
respond
rapidly
efficiently.
Furthermore,
main
alleviating
reactive
oxygen
species
accumulation
balancing
redox
homeostasis
highlighted.