Abstract
With
global
agricultural
practices
increasingly
focused
on
sustainability
and
efficiency,
deciphering
the
complex
relationship
between
soil
nutrient
turnover
crop
uptake
is
critical
for
advancing
productivity
environmental
resilience.
This
study
focuses
nitrogen
transformation
process
following
dazomet
fumigation
examines
how
microorganisms
influence
both
cycling
above‐ground
metabolism.
Fumigation
led
to
significant
changes,
with
ammonium
increasing
by
18.89%−94.82%
nitrate
decreasing
30.20%−90.21%
in
tobacco
roots,
stems,
leaves.
also
caused
a
notable
shift
microbial
community,
inhibiting
ammonium‐oxidizing
while
stimulating
denitrifying
microbes.
These
changes
not
only
disrupted
balance‐reducing
nitrification
72.91%−86.51%
denitrification
197%−324%
but
had
cascading
effect
By
altering
composition
of
communities,
directly
influenced
turnover,
subsequently
impacting
availability
distribution
crop.
The
disruption
balance
further
expression
key
metabolism
enzymes
transporter
genes.
Specifically,
genes
related
transporters,
as
well
amino
acid
enzymes,
were
upregulated.
Structural
equation
modeling
confirmed
that
shifts
community
central
driving
findings
underscore
role
communities
link
metabolism,
highlighting
their
importance
regulating
plant
absorption
utilization.
suggests
optimizing
management
strategies
could
lead
improvements
efficiency.
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Июль 26, 2023
Prebiotics
are
compounds
that
selectively
stimulate
the
growth
and
activity
of
beneficial
microorganisms.
The
use
prebiotics
is
a
well-established
strategy
for
managing
human
gut
health.
This
concept
can
also
be
extended
to
plants
where
plant
rhizosphere
microbiomes
improve
nutrient
acquisition
disease
resistance.
However,
we
lack
effective
strategies
choosing
metabolites
elicit
desired
impacts
on
In
this
study,
target
tomato
(Solanum
lycopersicum)
suffering
from
wilt
(caused
by
Ralstonia
solanacearum)
as
source
potential
prebiotic
metabolites.
We
identify
(ribose,
lactic
acid,
xylose,
mannose,
maltose,
gluconolactone,
ribitol)
exclusively
used
soil
commensal
bacteria
(not
positively
correlated
with
R.
but
not
efficiently
pathogen
in
vitro.
Metabolites
application
1
µmol
g
Abstract
Background
Plant
microbiota
contributes
to
plant
growth
and
health,
including
enhancing
resistance
various
diseases.
Despite
remarkable
progress
in
understanding
diseases
plants,
the
precise
role
of
rhizosphere
watermelon
against
soil-borne
remains
unclear.
Here,
we
constructed
a
synthetic
community
(SynCom)
16
core
bacterial
strains
obtained
from
grafted
plants.
We
further
simplified
SynCom
investigated
bacteria
with
synergistic
interactions
promoting
through
simple
community.
Results
Our
results
demonstrated
that
significantly
enhanced
disease
ungrafted
grown
non-sterile
soil.
Furthermore,
analysis
amplicon
metagenome
data
revealed
pivotal
Pseudomonas
as
evidenced
by
significant
increase
relative
abundance
biofilm-forming
pathways
post-SynCom
inoculation.
Based
on
vitro
co-culture
experiments
metabolomic
analysis,
selected
along
seven
other
members
exhibited
effects
.
It
enabled
us
refine
initially
into
comprising
eight
species.
Notably,
plant-promoting
were
similar
those
initial
SynCom.
protected
plants
bacteria.
Conclusions
findings
suggest
proliferate
mitigate
microbial
interactions,
highlighting
potential
between
microorganisms
health.
This
study
provides
novel
insight
using
functional
promising
solution
for
sustainable
agriculture.
New Phytologist,
Год журнала:
2024,
Номер
243(4), С. 1506 - 1521
Опубликована: Июнь 14, 2024
Intercropping
leads
to
different
plant
roots
directly
influencing
belowground
processes
and
has
gained
interest
for
its
promotion
of
increased
crop
yields
resource
utilization.
However,
the
precise
mechanisms
through
which
interactions
between
rhizosphere
metabolites
microbiome
contribute
production
remain
ambiguous,
thus
impeding
understanding
yield-enhancing
advantages
intercropping.
This
study
conducted
field
experiments
(initiated
in
2013)
pot
experiments,
coupled
with
multi-omics
analysis,
investigate
plant-metabolite-microbiome
maize.
Field-based
data
revealed
significant
differences
metabolite
profiles
soils
maize
monoculture
In
particular,
intercropping
exhibited
higher
microbial
diversity
chemodiversity.
The
chemodiversity
composition
were
significantly
related
diversity,
community
composition,
network
complexity
soil
microbiomes,
this
relationship
further
impacted
nutrient
uptake.
Pot-based
findings
demonstrated
that
exogenous
application
a
metabolic
mixture
comprising
key
components
enriched
by
(soyasapogenol
B,
6-hydroxynicotinic
acid,
lycorine,
shikimic
phosphocreatine)
enhanced
root
activity,
content,
biomass
natural
soil,
but
not
sterilized
soil.
Overall,
emphasized
significance
metabolite-microbe
enhancing
systems.
It
can
provide
new
insights
into
controls
within
intensive
agroecosystems,
aiming
enhance
ecosystem
services.
Microbes
colonizing
each
compartment
of
terrestrial
plants
are
indispensable
for
maintaining
crop
health.
Although
corn
stalk
rot
(CSR)
is
a
severe
disease
affecting
maize
(Zea
mays)
worldwide,
the
mechanisms
underlying
host–microbe
interactions
across
vertical
compartments
in
plants,
which
exhibit
heterogeneous
CSR-resistance,
remain
largely
uncharacterized.
Here,
we
investigated
microbial
communities
associated
with
CSR-resistant
and
CSR-susceptible
cultivars
using
multi-omics
analysis
coupled
experimental
verification.
Maize
resistant
to
CSR
reshaped
microbiota
recruited
Bacillus
species
three
phenotypes
against
Fusarium
graminearum
including
niche
pre-emption,
potential
secretion
antimicrobial
compounds,
no
inhibition
alleviate
pathogen
stress.
By
inducing
expression
Tyrosine
decarboxylase
1
(TYDC1),
encoding
an
enzyme
that
catalyzes
production
tyramine
dopamine,
isolates
do
not
directly
suppress
infection
induced
synthesis
berberine,
isoquinoline
alkaloid
inhibits
growth.
These
beneficial
bacteria
were
from
rhizosphere
transferred
stems
but
grains
plants.
The
current
study
offers
insight
into
how
respond
interact
their
microbiome
lays
foundation
preventing
treating
soil-borne
pathogens.
Summary
The
assembly
of
the
rhizosphere
microbiome
determines
its
functionality
for
plant
fitness.
Although
interactions
between
arbuscular
mycorrhizal
fungi
(AMF)
and
growth‐promoting
rhizobacteria
(PGPR)
play
important
roles
in
growth
disease
resistance,
research
on
division
labor
among
members
symbionts
formed
plants,
AMF,
PGPR,
as
well
flow
carbon
sources,
is
still
insufficient.
To
address
above
questions,
we
used
soybean
(
Glycine
max
),
Funneliformis
mosseae
,
Pseudomonas
putida
KT2440
subjects
to
establish
rhizobiont
elucidate
signal
exchange
these
components.
can
attract
P.
by
secreting
cysteine
a
signaling
molecule
promote
colonization
rhizosphere.
Colonized
stimulate
l
‐tryptophan
secretion
host
lead
upregulation
genes
involved
converting
methyl‐indole‐3‐acetic
acid
(Me‐IAA)
into
IAA
response
stimulation.
Collectively,
decipher
tripartite
mechanism
microbial
community
via
cross‐kingdom
interactions.
FEMS Microbiology Reviews,
Год журнала:
2023,
Номер
47(2)
Опубликована: Фев. 24, 2023
Abstract
To
successfully
infect
plants,
pathogens
secrete
effector
proteins
to
the
plant
apoplast
or
inside
cells,
where
they
suppress
immunity
interfere
with
other
cellular
processes
facilitate
infection.
Plant
metabolism
is
crucial
for
most
and
plays
a
key
role
in
defense
against
pathogens,
making
it
major
target
pathogen
effectors.
Effector
manipulate
host
provide
nutrients
indirectly
chemical
responses.
Recent
studies
have
shown
that
also
utilize
effectors
shape
microbiota
composition
by
altering
concentration
of
certain
metabolites.
Here,
we
summarize
current
knowledge
on
manipulation
We
discuss
what
remains
unknown
regarding
