Journal of Pineal Research,
Journal Year:
2024,
Volume and Issue:
76(5)
Published: July 19, 2024
ABSTRACT
Melatonin
(
N
‐acetyl‐5‐methoxytryptamine),
a
well‐known
mammalian
hormone,
has
been
having
great
relevance
in
the
Plant
World
recent
years.
Many
of
its
physiological
actions
plants
are
leading
to
possible
features
agronomic
interest,
especially
those
related
improvements
tolerance
stressors
and
postharvest
life
fruits
vegetables.
Thus,
through
exogenous
application
melatonin
or
by
modifying
endogenous
biosynthesis
phytomelatonin,
some
change
can
be
made
functional
levels
tissues
their
responses.
Also,
acting
respective
phytomelatonin
enzymes,
regulating
expression
tryptophan
decarboxylase
TDC
),
tryptamine
5‐hydroxylase
T5H
serotonin
‐acetyltransferase
SNAT
‐acetylserotonin
O
‐methyltransferase
ASMT
caffeic
acid
COMT
recently
action
deacetylases
on
intermediates
offers
promising
opportunities
for
improving
vegetables
marketability.
Other
regulators/effectors
such
as
different
transcription
factors,
protein
kinases,
phosphatases,
miRNAs,
protein–protein
interactions,
gasotransmitters
nitric
oxide
hydrogen
sulfide
were
also
considered
an
exhaustive
vision.
interesting
aspects
role
autophagic
responses,
posttranslational
reprogramming
protein‐phosphorylation,
ubiquitylation,
SUMOylation,
PARylation,
persulfidation,
nitrosylation
described
phytomelatonin‐mediated
responses
discussed,
including
relationship
several
plant
hormones,
chilling
injury
fungal
decay
alleviating.
The
current
data
about
receptor
(CAND2/PMTR1),
effect
UV‐B
light
cold
storage
damage
presented
discussed.
All
this
focus
new
preservation
quality
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
Foods,
Journal Year:
2025,
Volume and Issue:
14(3), P. 355 - 355
Published: Jan. 22, 2025
The
untargeted
metabolomics
of
Newhall
navel
oranges
from
three
areas
in
China—Ganzhou,
Fengjie,
and
Zigui—with
geographical
indication
(GI)
was
measured
using
LC-MS/MS.
Orthogonal
partial
least
squares
discriminant
analysis
performed
for
sample
classification
important
metabolite
identification.
This
approach
identified
the
best
markers
origin
able
to
discriminate
Ganzhou,
Zigui
orange
samples.
For
peeled
samples,
2-isopropylmalic
acid,
succinic
citric
L-aspartic
L-glutamic
γ-semialdehyde,
D-β-phenylalanine,
hesperetin,
hydrocinnamic
4-hydroxycinnamic
dehydroascorbate
were
used
origin.
All
these
overexpressed
samples
area,
followed
by
Ganzhou
area.
As
unpeeled
isovitexin
2′-O-β-D-glucoside,
isovitexin,
diosmetin,
trans-2-hydroxycinnamate
trans-cinnamate,
β-carotene
their
first
seven
Zigui-planted
whole
showed
highest
levels,
last
richest
Ganzhou-planted
According
variation
discriminating
origins
or
with
GI
value
titratable
acidity
those
Zigui,
planted
have
balance
between
taste
nutrition.
work
confirms
that
combined
OPLS-DA
is
an
effective
way
tracing
overall
quality
evaluation.
Foods,
Journal Year:
2025,
Volume and Issue:
14(7), P. 1247 - 1247
Published: April 3, 2025
Melatonin
(MT)
is
an
elicitor
that
stimulates
phenolic
compounds
biosynthesis
and
accumulation
in
fruits
vegetables.
However,
its
role
regulating
the
phenylpropane
metabolism
during
pepper
ripening
unclear.
To
investigate
how
exogenous
MT
regulates
ripening,
plant
surfaces
were
sprayed
with
different
concentrations
(0
100
µmol·L-1)
10
days
after
anthesis.
treatment
improved
quality.
In
particular,
total
phenolics
flavonoids
levels
elevated,
indicating
affected
metabolism.
Furthermore,
metabolomics
identified
15
substances
exhibiting
high
fold-change
values
treatment,
including
chlorogenic
acid,
gallic
ferulic
caffeic
cynarin,
p-coumaric
cinnamic
gentianic
benzoic
sinapic
p-hydroxybenzoic
protocatechuic
rutin,
quercetin,
kaempferol.
Shikimate
dehydrogenase,
phenylalanine
ammonia-lyase,
cinnamate-4-hydroxylase,
4-coumarate-Coa
ligase,
chalcone
synthase,
isomerase
activities
also
evaluated.
upregulated
expression
of
genes
involved
synthesis
corresponding
endogenous
anabolic
pathway,
promoting
endogenous.
The
polyphenolics
carbohydrates
are
indicators
botanical
geographical
origin
Serbian
autochthonous
clones
red
spice
throughout
ripening.
summary,
accelerates
by
activating
modulating
hormone
signaling
networks.
This
expected
to
offer
a
revolutionary
strategy
reinforce
plants
resistance
Ecotoxicology and Environmental Safety,
Journal Year:
2024,
Volume and Issue:
284, P. 116957 - 116957
Published: Sept. 3, 2024
The
impact
of
emerging
stressors,
such
as
pesticides
and
heavy
metals,
on
the
nutritional
quality,
resistance,
antioxidant
systems
crops
is
subject
intense
monitoring.
Due
to
its
low
toxicity
biocompatibility,
nano-selenium
(nano-Se)
increases
capacity
more
effectively
than
selenium
(Se).
However,
protective
mechanism
nano-Se
in
plum
trees
still
unknown
when
subjected
long-term
abiotic
stress.
In
this
study,
foliar
application
enhanced
fruit's
fresh
weight
diameter
plant
growth
development
by
increasing
content
trace
elements
(Zn
Se)
amino
acids
(Try,
Phe,
Pro,
Arg)
leaves
fruits.
Compared
control,
treatment
dramatically
improved
plant's
system,
resulting
a
substantial
increase
SOD
(44.3
%),
POD
(24.3
CAT
(95.6
%)
levels.
It
also
increased
IAA
(118.8
total
flavonoids
(23.0
phenols
(15.8
rutin
(37.7
quercetin
(146.8
caffeic
acid
(19.8
contents
regulating
phenylpropane
metabolic
pathways.
Targeted
analysis
indicated
that
biofortification
greatly
levels
His
(60.7
Ser
(123.5
Thr
(105.7
Val
(202.1
Ile
(236.2
Leu
(84.0
Tyr
(235.0
Phe
(164.7
%).
non-target
metabolomics
results
showed
stimulated
nutrition
boosting
metabolism
production.
Therefore,
can
improve
quality
resistance
plums
both
primary
secondary
pathways
plants
enhancing
capacity.
This
investigation
provides
reference
for
extrapolating
positive
effects
crop
other
species.
