Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Дек. 28, 2024
The
quality
of
cigar
tobacco
leaves
is
profoundly
affected
by
the
timing
their
harvest,
with
both
early
and
late
collections
resulting
in
inferior
characteristics.
While
relationship
between
maturity
physiological
metabolic
processes
acknowledged,
a
comprehensive
understanding
behavior
harvested
at
different
stages
remains
elusive.
This
research
investigated
metabolomic
profiles
variety
CX-014,
grown
Danjiangkou
City,
Hubei
Province,
sampled
35
(T1),
42
(T2),
49
(T3),
56
(T4)
days
post-inflorescence
removal.
Leaf
color
transitioned
from
green
to
yellow,
accompanied
appearance
white
mature
spots.
Notable
increases
photosynthetic
pigments
gas
exchange
parameters
occurred
T1
T2,
followed
decline
T3
T4.
optimal
sugar-to-nicotine
potassium-to-chlorine
ratios,
critical
determinants
smoking
combustibility,
were
observed
T3,
indicating
superior
chemical
balance
this
stage.
Metabolomic
analysis
revealed
2153
distinct
metabolites,
most
significant
changes
occurring
T2
highlighting
transformations
during
interval.
Pathway
enrichment
via
KEGG
pinpointed
notable
shifts
amino
acid
synthesis
pathways,
particularly
those
involving
tryptophan,
alanine,
aspartate.
Tryptophan
metabolism
zeatin
biosynthesis
substantially
altered,
compounds
like
indolepyruvic
acid,
N-formylpurine
nucleotide,
isopentenyladenine
dihydrozeatin
showing
marked
reductions
T3.
study
also
explored
how
lower
leaf
harvest
influences
middle
leaves,
finding
that
plethora
metabolites
associated
breakdown
arachidonic
acid—a
primitive
metazoan
signaler
implicated
plant
stress
defense
networks—were
abundant
when
43–38
prior.
Overall,
these
findings
elucidates
complex
dynamics
maturation,
involved
essential
pathways.
Abstract
Seed
germination
is
a
complex
process
regulated
by
internal
and
external
factors.
Melatonin
(
N
-acetyl-5-methoxytryptamine)
ubiquitous
signaling
molecule,
playing
an
important
role
in
regulating
seed
under
normal
stressful
conditions.
In
this
review,
we
aim
to
provide
comprehensive
overview
on
melatonin's
effects
the
basis
of
existing
literature.
Under
conditions,
exogenous
high
levels
melatonin
can
suppress
or
delay
germination,
suggesting
that
may
play
maintaining
dormancy
preventing
premature
germination.
Conversely,
conditions
(e.g.,
salinity,
drought,
extreme
temperatures),
has
been
found
accelerate
modulate
expression
genes
involved
ABA
GA
metabolism,
thereby
influencing
balance
these
hormones
affecting
ABA/GA
ratio.
shown
ROS
accumulation
nutrient
mobilization,
which
impact
process.
conclusion,
inhibit
while
promoting
via
ratios,
levels,
metabolic
enzyme
activity.
Further
research
area
will
deepen
our
understanding
intricate
contribute
development
improved
treatments
agricultural
practices.
Food Chemistry,
Год журнала:
2024,
Номер
458, С. 140172 - 140172
Опубликована: Июнь 28, 2024
Melatonin
(MLT)
is
a
hormone
that
exists
in
all
living
organisms,
including
bacteria,
yeast,
fungi,
animals,
and
plants,
many
of
which
are
ingested
daily
the
diet.
However,
exact
concentrations
melatonin
each
foods
effect
on
health
intake
rich
MLT
not
known.
Therefore,
aim
this
review
was
to
gather
available
information
content
different
evaluate
has
pathologies.
The
amount
may
vary
depending
variety,
origin,
heat
treatment,
processing,
analysis
technique,
among
other
factors.
Dietary
interventions
with
report
benefits,
but
there
no
evidence
partially
responsible
for
clinical
improvement.
it
necessary
more
foods,
as
well
cooking/processing
MLT,
estimate
its
total
typical
diet
better
explore
potential
impact
health.
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Окт. 1, 2024
Melatonin,
a
tryptophan-derived
indoleamine
metabolite
with
important
roles
in
plant
growth
and
defense,
has
recently
been
regarded
as
new
hormone.
Maize
is
one
of
the
most
cereal
crops
world.
Although
melatonin
receptor
gene,
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 5, 2024
Abstract
The
timing
of
maturity
significantly
impacts
the
quality
cigar
tobacco
leaves,
with
both
premature
and
delayed
maturation
leading
to
degradation.
Despite
known
association
between
physiological
metabolic
activities,
there
is
a
paucity
concrete
evidence
detailing
behavior
leaves
harvested
at
varying
times.
This
research
involved
comprehensive
metabolomic
examination
variety
CX-014,
cultivated
in
Danjiangkou
City,
Hubei
Province.
study
focused
on
picked
35
(T1),
42
(T2),
49
(T3),
56
(T4)
days
following
removal
apical
inflorescence.
As
harvest
period
progressed,
leaves’
hue
transitioned
from
green
yellow,
displaying
white
mature
spots.
Between
T1
T2,
was
an
uptick
pigment
indices
(like
chlorophyll
b)
photosynthetic
traits
(such
as
stomatal
conductance),
which
then
diminished
T3
T4
samples.
Optimal
levels
sugar-to-nicotine
potassium-to-chlorine
ratios—key
indicators
smoking
combustibility—were
observed
T3,
suggesting
more
balanced
chemical
composition
this
stage.
Metabolomic
analysis
revealed
2,153
distinct
metabolites,
most
significant
changes
occurring
T2
highlighting
critical
transformations
during
interval.
Pathway
enrichment
via
KEGG
pinpointed
notable
shifts
amino
acid
synthesis
pathways,
particularly
those
involving
tryptophan,
alanine,
aspartate.
Tryptophan
metabolism
zeatin
biosynthesis
were
substantially
altered,
compounds
like
indolepyruvic
acid,
N-formylpurine
nucleotide,
isopentenyladenine
dihydrozeatin
showing
marked
reductions
T3.
also
explored
how
lower
leaf
influences
processes
middle
finding
that
plethora
metabolites
associated
breakdown
arachidonic
acid—a
primitive
metazoan
signaler
implicated
plant
stress
defense
networks—were
abundant
when
43
38
prior.
These
findings
suggest
may
sway
physiology
environmental
adaptability
leaves.
Overall,
investigation
sheds
light
intricate
dynamics
throughout
pinpoints
crucial
signify
pivotal
pathways.
Agronomy,
Год журнала:
2024,
Номер
14(9), С. 2094 - 2094
Опубликована: Сен. 13, 2024
With
the
growth
of
population
and
development
modern
industry
economy,
problem
heavy
metal
pollution
in
cultivated
soil
has
become
increasingly
prominent.
Moreover,
poses
a
serious
threat
to
plant
due
its
characteristics
difficult
degradation,
high
mobility,
easy
enrichment,
potential
toxicity
social
topic.
Melatonin
is
new
type
hormone
widely
present
animals,
plants,
fungi,
bacteria,
biological
role
begun
investigated
last
dozen
years.
Facing
stress,
melatonin
can
play
pleiotropic
physiological
processes
such
as
stress
resistance
regulation,
mitigate
damage
caused
by
on
provide
research
idea
for
alleviating
plants.
From
aspects
phenotype,
physiology,
element
absorption,
molecular
structure,
this
paper,
therefore,
mainly
reviews
effects
plants
subjected
mechanism
then
puts
forward
future
directions.
This
information
may
be
great
significance
normal
crops
under
will
an
important
theoretical
basis
genetic
improvement
crop
future.
