International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(23), P. 12588 - 12588
Published: Nov. 23, 2024
Polyamines
(PAs),
such
as
putrescine,
spermine,
and
spermidine,
are
bioactive
molecules
that
play
a
vital
role
in
plant
responses
to
stresses.
Although
they
frequently
applied
achieve
higher
levels
of
stress
tolerance
plants,
their
function
seed
biology
is
still
not
fully
understood.
PAs
have
been
described
only
limited
number
studies
priming
agents,
but
most
the
data
report
physiological
biochemical
PA
effects,
few
reports
concern
molecular
mechanisms.
In
this
review,
we
summarized
effects
on
germination,
seedling
establishment,
young
response
abiotic
stresses,
tried
draw
general
scheme
action
during
early
developmental
stages.
Plant Biotechnology Journal,
Journal Year:
2024,
Volume and Issue:
22(11), P. 3194 - 3201
Published: July 18, 2024
Summary
Polyamines
(PAs)
are
pleiotropic
bioorganic
molecules.
Cellular
PA
contents
determined
by
a
balance
between
synthesis
and
degradation.
PAs
have
been
extensively
demonstrated
to
play
vital
roles
in
the
modulation
of
plant
developmental
processes
adaptation
various
environmental
stresses.
In
this
review,
latest
advances
on
diverse
range
processes,
such
as
morphogenesis,
organogenesis,
growth
development,
fruit
ripening,
summarized
discussed.
Besides,
crosstalk
phytohormones
or
other
signalling
molecules,
including
H
2
O
NO,
involved
these
is
dwelled
on.
addition,
attempts
made
improve
yield
quality
grain
vegetable
crops
through
altering
catabolism
enumerated.
Finally,
several
questions
that
remain
unanswered
proposed
These
include
mechanisms
underlying
cooperative
regulation
their
interplaying
partners
like
phytohormones,
NO;
transport
for
maintaining
homeostasis;
utilization
anabolism/catabolism
generating
high‐yield
good‐quality
crops.
This
review
aims
gain
new
insights
into
role
which
provides
an
alternative
approach
manipulating
engineering
valuable
crop
varieties
can
be
used
future.
Physiologia Plantarum,
Journal Year:
2024,
Volume and Issue:
176(6)
Published: Nov. 1, 2024
As
global
climate
change
intensifies,
the
occurrence
and
severity
of
various
abiotic
stresses
will
significantly
threaten
plant
health
productivity.
Drought
stress
(DS)
is
a
formidable
obstacle,
disrupting
normal
functions
through
specific
morphological,
physiological,
biochemical,
molecular
mechanisms.
Understanding
how
plants
navigate
DS
paramount
to
mitigating
its
adverse
effects.
In
response
DS,
synthesize
or
accumulate
growth
regulators
(PGRs),
including
phytohormones,
neurotransmitters,
gasotransmitters,
polyamines,
which
present
promising
sustainable
green
chemical
strategies
adapt
tolerate
conditions.
These
PGRs
orchestrate
crucial
structure
function
adjustments,
activating
defense
systems
modulating
cellular-level
responses,
transcript
levels,
transcription
factors,
metabolic
genes,
stress-responsive
candidate
proteins.
However,
efficacy
these
molecules
in
depends
on
species,
applied
PGR
dose,
treatment
type,
duration
exposure,
stages.
Thus,
exploring
integrated
impact
enhancing
fitness
tolerance
for
food
security
agriculture.
This
review
investigates
responses
explains
potential
exogenously
diverse
PGRs,
dissects
complex
chemistry
among
sheds
light
omics
approaches
harnessing
basis
tolerance.
updated
delivers
comprehensive
mechanistic
insights
leveraging
enhance
overall
under
Plant Stress,
Journal Year:
2024,
Volume and Issue:
11, P. 100387 - 100387
Published: Feb. 6, 2024
Abscisic
acid
(ABA)
and
polyamines
(PAs)
play
an
important
role
in
plant
stress
responses;
however,
their
cooperative
mechanisms
are
not
fully
understood.
Here,
using
the
detached-,
PEG
6000-
pot-drought
strawberry
leaves,
we
investigated
expression
changes
of
genes
key
to
ABA
PA
homeostasis
by
a
combination
qRT-PCR,
western
blotting,
RNA-sequencing,
physiological
analyses,
pharmacological
tests.
The
results
showed
that
early
drought
may
promote
production
both
putrescine
(Put)
FaADC1
FaNCED1,
then
these
productions
could
be
further
facilitated
accumulated
Put.
Meanwhile,
high
accumulation
only
accelerated
biosynthesis
FaNCED3,
but
also
controlled
decrease
increase
FaSAMDC1
FaPAO5
expression.
Based
on
our
RNA-seq
data,
Put
was
involved
photosynthesis
oxidative
phosphorylation,
while
implicated
sugar
flavonoid
metabolism,
which
were
linked
auxin
(IAA).
Altogether,
response
stress,
FaNCED1/3
FaADC1/FaSAMDC1
participated
separately
accumulation,
mostly
FaNCED1/FaADC1
induced
FaNCED3/FaSAMDC1
ABA.
Finally,
balance
between
PAs
for
control
growth
adaptation
is
proposed
through
IAA,
photosynthesis,
among
act
Put-dependent
manner.
Plant Biology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 16, 2024
Abstract
The
postharvest
lifespan
of
horticultural
products
is
closely
related
to
loss
nutritional
quality,
accompanied
by
a
rapid
decline
in
shelf
life,
commercial
value,
and
marketability.
Melatonin
(MT)
application
not
only
maintains
quality
but
also
delays
senescence
products.
This
paper
reviews
biosynthesis
metabolism
endogenous
MT,
summarizes
significant
effects
exogenous
MT
on
products,
examines
regulatory
mechanisms
MT‐mediated
effects,
provides
an
integrated
review
for
understanding
the
positive
role
delay
maintenance.
As
multifunctional
molecule,
coordinates
other
signal
molecules,
such
as
ABA,
ETH,
JA,
SA,
NO,
Ca
2+
,
regulate
ripening
senescence.
Several
metabolic
pathways
are
involved
regulation
during
senescence,
including
synthesis
transduction
plant
hormones,
redox
homeostasis,
energy
metabolism,
carbohydrate
degradation
pigment
cell
wall
components.
Moreover,
regulates
expression
genes
antioxidant
systems,
generation,
fruit
firmness
colour,
membrane
integrity,
storage.
Consequently,
could
become
emerging
eco‐friendly
preservative
extend
life
maintain
Plants,
Journal Year:
2025,
Volume and Issue:
14(2), P. 273 - 273
Published: Jan. 18, 2025
Plants
face
a
range
of
environmental
stresses,
such
as
heat
and
drought,
that
significantly
reduce
their
growth,
development,
yield.
have
developed
complex
signaling
networks
to
regulate
physiological
processes
improve
ability
withstand
stress.
The
key
regulators
plant
stress
responses
include
polyamines
(PAs)
gaseous
molecules
(GSM),
hydrogen
sulfide
(H2S),
nitric
oxide
(NO),
methane
(CH4),
carbon
monoxide
(CO),
dioxide
(CO2),
ethylene
(ET).
functions
PAs
GSM
in
perception,
signal
transduction,
stress-responsive
pathways
been
explored.
However,
there
is
lack
detailed,
updated
information
on
the
interaction
adaptation
drought
This
review
explores
between
for
It
synergistic
effects
mitigating
negative
impacts
productivity.
Moreover,
comprehensive
analysis
physiological,
biochemical,
molecular
approaches
demonstrates
activates
pathways,
enhances
antioxidant
systems,
modulates
gene
expression.
These
combined
contribute
improved
tolerance
plants.
presented
provides
valuable
insights
into
resilience
strategies
suggests
potential
measures
developing
climate-resilient
crops
address
increasing
challenges.
