Journal of Experimental Botany,
Journal Year:
2022,
Volume and Issue:
73(17), P. 5928 - 5946
Published: May 30, 2022
Abstract
Melatonin
(N-acetyl-5-methoxytryptamine)
is
an
indole
molecule
widely
found
in
animals
and
plants.
It
well
known
that
melatonin
improves
plant
resistance
to
various
biotic
abiotic
stresses
due
its
potent
free
radical
scavenging
ability
while
being
able
modulate
signaling
response
pathways
through
mostly
unknown
mechanisms.
In
recent
years,
increasing
number
of
studies
have
shown
plays
a
crucial
role
improving
crop
quality
yield
by
participating
the
regulation
aspects
growth
development.
Here,
we
review
effects
on
vegetative
reproductive
development,
systematically
summarize
molecular
regulatory
network.
Moreover,
effective
concentrations
exogenously
applied
different
crops
or
at
stages
same
are
analysed.
addition,
compare
endogenous
phytomelatonin
organs,
evaluate
potential
function
circadian
rhythms.
The
prospects
approaches
regulating
exogenous
application
appropriate
melatonin,
modification
metabolism-related
genes,
use
nanomaterials
other
technologies
improve
utilization
efficiency
also
discussed.
Annals of Botany,
Journal Year:
2017,
Volume and Issue:
121(2), P. 195 - 207
Published: Aug. 17, 2017
Plant
melatonin
appears
to
be
a
multi-regulatory
molecule,
similar
those
observed
in
animals,
with
many
specific
functions
plant
physiology.
In
recent
years,
the
number
of
studies
on
plants
has
increased
significantly.
One
most
studied
actions
is
its
effect
biotic
and
abiotic
stress,
such
as
that
produced
by
drought,
extreme
temperatures,
salinity,
chemical
pollution
UV
radiation,
among
others.
Journal of Pineal Research,
Journal Year:
2018,
Volume and Issue:
65(2)
Published: April 27, 2018
Melatonin
has
been
detected
in
plants
1995;
however,
the
function
and
signaling
pathway
of
this
putative
phytohormone
are
largely
undetermined
due
to
a
lack
knowledge
about
its
receptor.
Here,
we
discovered
first
phytomelatonin
receptor
(CAND2/PMTR1)
Arabidopsis
thaliana
found
that
melatonin
governs
receptor-dependent
stomatal
closure.
The
application
induced
closure
through
heterotrimeric
G
protein
α
subunit-regulated
H2
O2
Ca2+
signals.
mutant
lines
lacking
AtCand2
encodes
candidate
protein-coupled
were
insensitive
melatonin-induced
Accordingly,
production
influx
completely
abolished
cand2.
CAND2
is
membrane
interacts
with
GPA1
expression
was
tightly
regulated
by
various
organs
guard
cells.
showed
saturable
specific
125
I-melatonin
binding,
apparent
Kd
(dissociation
constant)
0.73
±
0.10
nmol/L
(r2
=
.99),
demonstrating
(PMTR1).
Our
results
suggest
regulation
dependent
on
CAND2/PMTR1-mediated
transduction
cascade.
Journal of Integrative Plant Biology,
Journal Year:
2020,
Volume and Issue:
63(1), P. 126 - 145
Published: July 17, 2020
Melatonin
is
a
pleiotropic
molecule
with
multiple
functions
in
plants.
Since
the
discovery
of
melatonin
plants,
numerous
studies
have
provided
insight
into
biosynthesis,
catabolism,
and
physiological
biochemical
this
important
molecule.
Here,
we
describe
biosynthesis
from
tryptophan,
as
well
its
various
degradation
pathways
The
identification
putative
receptor
plants
has
led
to
hypothesis
that
hormone
involved
regulating
plant
growth,
aerial
organ
development,
root
morphology,
floral
transition.
universal
antioxidant
activity
role
preserving
chlorophyll
might
explain
anti-senescence
capacity
aging
leaves.
An
impressive
amount
research
focused
on
modulating
postharvest
fruit
ripening
by
expression
ethylene-related
genes.
Recent
evidence
also
indicated
plant's
response
biotic
stress,
cooperating
other
phytohormones
well-known
molecules
such
reactive
oxygen
species
nitric
oxide.
Finally,
great
progress
been
made
towards
understanding
how
alleviates
effects
abiotic
stresses,
including
salt,
drought,
extreme
temperature,
heavy
metal
stress.
Given
diverse
roles,
propose
master
regulator
Frontiers in Plant Science,
Journal Year:
2017,
Volume and Issue:
8
Published: March 1, 2017
Melatonin,
a
pleiotropic
signal
molecule,
has
been
shown
to
play
important
roles
in
the
regulation
of
plant
growth,
development,
and
responses
environmental
stresses.
Since
few
species
have
investigated
unveil
effect
exogenous
melatonin
on
salt
stress,
underlying
mechanism
melatonin-mediated
stress
tolerance
other
still
remains
largely
unknown.
In
this
study,
effects
leaf
photosynthesis
redox
homeostasis
watermelon
were
examined
under
(300
mM
NaCl)
along
with
different
doses
(50,
150,
500
μM)
pretreatment.
NaCl
inhibited
increased
accumulation
reactive
oxygen
membrane
damage
leaves
seedlings.
However,
pretreatment
roots
alleviated
NaCl-induced
decrease
photosynthetic
rate
oxidative
dose-dependent
manner.
The
protection
by
was
closely
associated
inhibition
stomatal
closure
improved
light
energy
absorption
electron
transport
photosystem
II,
while
reduction
attributed
coupled
enhanced
activities
antioxidant
enzymes.
This
study
unraveled
crucial
role
mitigation
thus
can
be
implicated
management
salinity
cultivation.
International Journal of Molecular Sciences,
Journal Year:
2018,
Volume and Issue:
19(7), P. 1856 - 1856
Published: June 24, 2018
Boron
(B)
is
an
essential
trace
element
required
for
the
physiological
functioning
of
higher
plants.
B
deficiency
considered
as
a
nutritional
disorder
that
adversely
affects
metabolism
and
growth
involved
in
structural
functional
integrity
cell
wall
membranes,
ion
fluxes
(H+,
K+,
PO43−,
Rb+,
Ca2+)
across
division
elongation,
nitrogen
carbohydrate
metabolism,
sugar
transport,
cytoskeletal
proteins,
plasmalemma-bound
enzymes,
nucleic
acid,
indoleacetic
polyamines,
ascorbic
phenol
transport.
This
review
critically
examines
functions
plants,
symptoms,
mechanism
uptake
transport
under
limited
conditions.
can
be
mitigated
by
inorganic
fertilizer
supplementation,
but
deleterious
impact
frequent
application
disrupts
soil
fertility
creates
environmental
pollution.
Considering
this,
we
have
summarized
available
information
regarding
alternative
approaches,
such
root
modification,
grafting,
biostimulators
(mycorrhizal
fungi
(MF)
rhizobacteria),
nanotechnology,
effectively
utilized
acquisition,
leading
to
resource
conservation.
Additionally,
discussed
several
new
aspects,
combination
grafting
or
MF
with
combined
inoculation
arbuscular
rhizobacteria,
melatonin
application,
use
natural
synthetic
chelators,
possibly
play
role
translocation
stress
Frontiers in Plant Science,
Journal Year:
2021,
Volume and Issue:
11
Published: Jan. 28, 2021
Photosynthesis
sustains
plant
life
on
earth
and
is
indispensable
for
growth
development.
Factors
such
as
unfavorable
environmental
conditions,
stress
regulatory
networks,
biochemical
processes
limits
the
photosynthetic
efficiency
of
plants
thereby
threaten
food
security
worldwide.
Although
numerous
physiological
approaches
have
been
used
to
assess
performance
key
components
their
responses,
though,
these
are
not
extensive
enough
do
favor
strategic
improvement
photosynthesis
under
abiotic
stresses.
The
decline
in
capacity
due
stresses
directly
associated
with
reduction
yield.
Therefore,
a
detailed
information
responses
better
understanding
machinery
could
help
developing
new
crop
higher
yield
even
stressed
environments.
Interestingly,
cracking
signaling
metabolic
pathways,
identification
some
elements,
characterization
potential
genes,
phytohormone
factors
advanced
our
knowledge
related
photosynthesis.
However,
dynamic
modulation
dramatically
fluctuating
natural
environments
remains
limited.
Here,
we
provide
overview
research
conducted
date,
highlight
(heat,
salinity,
drought,
high
light,
heavy
metal)
that
limit
machinery.
Further,
reviewed
role
transcription
factor
genes
various
enzymes
involved
process
Finally,
discussed
recent
progress
field
biodegradable
compounds,
chitosan
humic
acid,
effect
melatonin
(bio-stimulant)
activity.
Based
gathered
researched
data
set,
logical
concept
regulation
along
strategies
will
expand
surely
accelerate
development
tolerance
mechanisms,
wider
adaptability,
survival
rate,
species.
