Cell wall bricks of defence: the case study of oligogalacturonides
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Март 25, 2025
The
plant
cell
wall
(CW)
is
more
than
a
structural
barrier;
it
serves
as
the
first
line
of
defence
against
pathogens
and
environmental
stresses.
During
pathogen
attacks
or
physical
damage,
fragments
CW,
known
CW-derived
Damage-Associated
Molecular
Patterns
(CW-DAMPs),
are
released.
These
molecular
signals
play
critical
role
in
activating
plant’s
immune
responses.
Among
CW-DAMPs,
oligogalacturonides
(OGs),
derived
from
breakdown
pectin,
some
most
well-studied.
This
review
highlights
recent
advances
understanding
functional
signalling
roles
OGs,
beginning
with
their
formation
through
enzymatic
CW
degradation
during
invasion
mechanical
injury.
We
discuss
how
OGs
perception
triggers
intracellular
pathways
that
enhance
regulate
interactions
microbes.
Given
excessive
OG
levels
can
negatively
impact
growth
development,
we
also
examine
regulatory
mechanisms
plants
use
to
fine-tune
responses,
avoiding
overactivation
hyper-
immunity.
As
natural
modulators,
(and
generally
CW-DAMPs),
offer
promising,
sustainable
alternative
chemical
pesticides
by
enhancing
crop
resilience
without
harming
environment.
By
strengthening
defences
supporting
eco-friendly
agricultural
practices,
hold
great
potential
for
advancing
resilient
farming
systems.
Язык: Английский
Potential of Bio-Sourced Oligogalacturonides in Crop Protection
Molecules,
Год журнала:
2025,
Номер
30(6), С. 1392 - 1392
Опубликована: Март 20, 2025
During
plant
development
or
interactions
with
pathogens,
modifications
of
the
cell
wall
occur.
Among
enzymes
involved,
pectinases,
particularly
polygalacturonases
(PGases),
play
a
crucial
role
in
controlled
hydrolysis
polysaccharides,
leading
to
formation
oligogalacturonides
(OGs).
These
pectin-derived
fragments
act
as
key
elicitors
defense
responses,
stimulating
innate
immunity
and
enhancing
resistance
pathogens
by
modulating
expression
genes
involved
immune
responses
inducing
production
compounds.
OGs
are
particular
interest
for
protection
natural
alternative
conventional
phytosanitary
products
they
can
be
obtained
through
chemical,
thermal,
enzymatic
degradation
biomass.
In
sustainable
approach,
agricultural
by-products
rich
pectin,
such
citrus
peels,
apple
pomace,
sugar
beet
pulp,
offer
an
eco-friendly
cost-effective
OG
production.
Thus,
current
review
aims
(i)
update
state
art
about
different
methods
used
produce
OGs,
(ii)
explore
potential
bio-based
biocontrol
molecules,
(iii)
examine
relevance
new
pectin
sources
Язык: Английский
Patè olive cake and its solid extract as amendments for ryegrass (Lolium perenne L.): Effects on soil chemical, microbiological and enzymatic characteristics and on plant yield and N content
Soil Use and Management,
Год журнала:
2024,
Номер
40(4)
Опубликована: Окт. 1, 2024
Abstract
A
peculiar
solid
olive
mill
waste
called
Patè
Olive
Cake
(POC),
produced
by
decanters
of
latest
generation,
and
its
derivative
extract
from
centrifugation
‘pellet’
were
evaluated
as
soil
amendments
on
a
pot
cultivation
ryegrass
in
sub‐acid
sub‐alkaline
soils.
Characterization
POC
pellet
was
performed
to
determine
their
main
chemical
characteristics
phytochemical
profile
conventional
methods,
NMR
HPLC
evaluate
suitability
for
agronomic
applications.
In
both
soils,
applied
contrasted
(i)
half
dose
added
mineral
nitrogen
(N)
phosphorous
(P)
correct
the
C:N
ratio
balance
phyto‐nutritive
formula,
(ii)
commercial
organo‐mineral
fertilizers
(iii)
untreated
(Control).
During
annual
cycle,
vegetative
responses
N
concentration
monitored
epigeal
biomass.
At
end
experiment,
samples
taken
pots
physicochemical
carry
out
genomic
enzymatic
investigations.
Both
soils
treated
with
supplemented
P
showed
significant
increase
biomass
productions
compared
Control
(+36.32%)
(+14.34%
+
16.41%,
respectively,
fertilizers).
all
treatments,
higher
cumulative
observed
(+7.02%).
abundance
structure
fungi
bacteria
communities
no
difference
Control.
Furthermore,
analysis
indicated
that
microbial
activity
not
adversely
affected
treatments.
Our
results
indicate
can
be
used
amendments,
contributing
reduce
use
implementing
circular
economy
sustainability.
Язык: Английский