Agronomy,
Journal Year:
2023,
Volume and Issue:
13(11), P. 2819 - 2819
Published: Nov. 15, 2023
Lignin
is
an
important
secondary
metabolite
that
maintains
the
mechanical
strength
of
horticultural
plants
and
enhances
their
ability
to
respond
external
environmental
changes
such
as
biotic
abiotic
stresses.
However,
excessive
accumulation
lignin
can
lead
lignification
products,
reducing
taste
quality
nutritional
value.
Therefore,
content
products
needs
be
controlled
at
a
reasonable
level,
studying
regulating
metabolism
very
meaningful
work.
This
article
focuses
on
synthesis,
accumulation,
regulation
in
crops
recent
years,
provides
systematic
analysis
its
molecular
mechanism
application
prospects,
sheds
insights
into
directions
need
further
research
future.
basis
for
proposes
new
ideas
improving
crops.
Physiologia Plantarum,
Journal Year:
2025,
Volume and Issue:
177(1)
Published: Jan. 1, 2025
Abstract
Stone
cells
are
one
of
the
limiting
factors
affecting
pear
fruit
quality
and
commodity
value.
The
formation
stone
cell
is
highly
correlated
with
lignin
deposition.
However,
molecular
mechanism
regulation
still
unclear.
Here,
we
observed
that
exogenous
application
GA
significantly
inhibited
also
decreased
content
in
‘Nanguo’
(
Pyrus
ussuriensis
)
fruits.
key
gene
PuPRX73
involved
synthesis
pathway
was
further
identified
using
RT‐PCR,
GA‐treatment
expression
.
Overexpression
or
silencing
fruits
increases
decreases
lignin.
We
transcription
PuMYB91
PuERF023
mRNA‐seq
their
after
GA‐treatment.
Transient
overexpression
promotes
fruits,
while
led
to
opposite
results
Yeast
one‐hybrid
(Y1H)
GUS
activity
analysis
revealed
directly
bind
activate
promoter,
co‐transfection
Nicotiana
benthamiana
leaves
promoted
promoter
Furthermore,
found
interacted
vitro
by
two‐hybrid
assays
(Y2H).
In
conclusion,
our
inhibits
production
suppressing
International Journal of Molecular Sciences,
Journal Year:
2025,
Volume and Issue:
26(9), P. 4158 - 4158
Published: April 27, 2025
Lignification
of
juice
sacs
is
a
primary
contributor
to
reductions
in
fruit
quality,
with
impacts
on
taste
and
economic
value
pomelo
(Citrus
grandis).
To
date,
information
the
regulation
lignification
remains
fragmentary.
In
this
study,
we
first
analyzed
relationship
between
nutrient
status
sacs,
which
revealed
significant
positive
correlation
nitrate
(NO3-)
concentration
lignin
concentration,
over
60%
accumulation
explained
by
NO3-
levels
three
models
machine
learning-based
regression.
Results
from
field
trails
11
orchards,
as
well
pear
fruits
soybean
roots
exposed
low
or
high
supplies,
further
demonstrated
that
plays
an
important
role
lignification.
Transcriptomic
analysis
showed
laccases
(CgLACs)
were
more
intensively
up-regulated
upon
addition
than
any
genes
encoding
one
other
12
enzymes
involved
biosynthesis.
Among
nine
identified
CgLACs,
CgLAC3
was
most
significantly
CgLAC
treated
plants.
Over-expressing
increased
concentrations
both
albedo
hairy
roots.
Taken
together,
conclude
modulates
through
expression,
suggests
NO3--N
fertilization
may
affect
lignification,
thereby
can
be
managed
improve
quality.
