Abstract
Background
Plant
health
and
growth
are
negatively
affected
by
pathogen
invasion;
however,
plants
can
dynamically
modulate
their
rhizosphere
microbiome
adapt
to
such
biotic
stresses.
Although
plant-recruited
protective
microbes
be
assembled
into
synthetic
communities
for
application
in
the
control
of
plant
disease,
microbial
commonly
contain
some
taxa
at
low
abundance.
The
roles
low-abundance
remain
unclear;
it
is
also
unclear
whether
all
enriched
enhance
host
adaptation
environment.
Here,
we
a
community
with
disease
resistance
function
based
on
differential
analysis
root-associated
bacterial
composition.
We
further
simplified
investigated
bacteria
Astragalus
mongholicus
root
rot
simple
community.
Results
Fusarium
oxysporum
infection
reduced
Shannon
diversity
significantly
composition
roots
.
Under
fungal
challenge,
recruited
beneficial
as
Stenotrophomonas
,
Achromobacter
Pseudomonas
Flavobacterium
roots.
constructed
disease-resistant
containing
10
high-
three
diseased
After
joint
selection
pathogens,
complex
was
four-species
composed
high-abundance
(
sp.,
Rhizobium
Ochrobactrum
sp.)
one
bacterium
Advenella
sp.).
Notably,
these
four
strains
thirteen-species
had
similar
effects
disease.
Furthermore,
protected
via
synergistic
effect
highly
abundant
inhibiting
less
activating
plant-induced
systemic
resistance.
Conclusions
Our
findings
suggest
that
abundance
play
an
important
role
only
few
associated
Therefore,
construction
simplification
found
present
study
could
strategy
employed
environmental
stress.
Annual Review of Microbiology,
Год журнала:
2019,
Номер
73(1), С. 69 - 88
Опубликована: Май 15, 2019
Microorganisms
colonizing
plant
surfaces
and
internal
tissues
provide
a
number
of
life-support
functions
for
their
host.
Despite
increasing
recognition
the
vast
functional
capabilities
microbiome,
our
understanding
ecology
evolution
taxonomically
hyperdiverse
microbial
communities
is
limited.
Here,
we
review
current
knowledge
genotypic
phenotypic
traits
as
well
allogenic
autogenic
factors
that
shape
microbiome
composition
functions.
We
give
specific
emphasis
to
impact
domestication
on
assembly
how
insights
into
microbiomes
wild
relatives
native
habitats
can
contribute
reinstate
or
enrich
microorganisms
with
beneficial
effects
growth,
development,
health.
Finally,
introduce
new
concepts
perspectives
in
research,
particular
community
theory
mechanistic
framework
unravel
interplay
distinct
ecological
processes-i.e.,
selection,
dispersal,
drift,
diversification-that
structure
microbiome.
Frontiers in Plant Science,
Год журнала:
2020,
Номер
10
Опубликована: Янв. 24, 2020
Plants
host
a
mesmerizing
diversity
of
microbes
inside
and
around
their
roots,
known
as
the
microbiome.
The
microbiome
is
composed
mostly
fungi,
bacteria,
oomycetes,
archaea
that
can
be
either
pathogenic
or
beneficial
for
plant
health
fitness.
To
grow
healthy,
plants
need
to
surveil
soil
niches
roots
detection
microbes,
in
parallel
maximize
services
nutrients
uptake
growth
promotion.
employ
palette
mechanisms
modulate
including
structural
modifications,
exudation
secondary
metabolites
coordinated
action
different
defence
responses.
Here,
we
review
current
understanding
on
composition
activity
root
how
molecules
shape
structure
root-associated
microbial
communities.
Examples
are
given
interactions
occur
rhizosphere
between
soilborne
fungi.
We
also
present
some
well-established
examples
harnessing
highlight
fitness
by
selecting
Understanding
manipulate
aid
design
next-generation
inoculants
targeted
disease
suppression
enhanced
growth.
Frontiers in Plant Science,
Год журнала:
2021,
Номер
12
Опубликована: Март 2, 2021
Plant
secondary
metabolites
(PSMs)
play
many
roles
including
defense
against
pathogens,
pests,
and
herbivores;
response
to
environmental
stresses,
mediating
organismal
interactions.
Similarly,
plant
microbiomes
participate
in
of
the
above-mentioned
processes
directly
or
indirectly
by
regulating
metabolism.
Studies
have
shown
that
plants
can
influence
their
microbiome
secreting
various
and,
turn,
may
also
impact
metabolome
host
plant.
However,
not
much
is
known
about
communications
between
interacting
partners
phenotypic
changes.
In
this
article,
we
review
patterns
potential
underlying
mechanisms
interactions
PSMs
microbiomes.
We
describe
recent
developments
analytical
approaches
methods
field.
The
applications
these
new
increased
our
understanding
relationships
Though
current
studies
primarily
focused
on
model
organisms,
results
obtained
so
far
should
help
future
agriculturally
important
facilitate
development
manipulate
PSMs–microbiome
with
predictive
outcomes
for
sustainable
crop
productions.
Plant
phenology
has
crucial
biological,
physical,
and
chemical
effects
on
the
biosphere.
Phenological
drivers
have
largely
been
studied,
but
role
of
plant
microbiota,
particularly
rhizosphere
not
considered.
We
discovered
that
microbial
communities
could
modulate
timing
flowering
Arabidopsis
thaliana.
Rhizosphere
microorganisms
increased
prolonged
N
bioavailability
by
nitrification
delayed
converting
tryptophan
to
phytohormone
indole
acetic
acid
(IAA),
thus
downregulating
genes
trigger
flowering,
stimulating
further
growth.
The
addition
IAA
hydroponic
cultures
confirmed
this
metabolic
network.
document
a
novel
network
in
which
soil
microbiota
influenced
time,
shedding
light
key
functioning.
This
opens
up
multiple
opportunities
for
application,
from
helping
mitigate
some
climate
change
environmental
stress
plants
(e.g.
abnormal
temperature
variation,
drought,
salinity)
manipulating
characteristics
using
inocula
increase
crop
potential.
Journal of Agricultural and Food Chemistry,
Год журнала:
2020,
Номер
68(18), С. 5024 - 5038
Опубликована: Апрель 7, 2020
Microorganisms
colonizing
the
plant
rhizosphere
provide
a
number
of
beneficial
functions
for
their
host.
Although
an
increasing
investigations
clarified
great
functional
capabilities
microbial
communities,
understanding
precise
mechanisms
underlying
impact
microbiome
assemblies
is
still
limited.
Also,
not
much
known
about
various
microbiome.
In
this
review,
we
summarize
current
knowledge
biotic
and
abiotic
factors
that
shape
as
well
traits
are
to
plants
growth
disease-resistance.
We
give
particular
emphasis
on
root
metabolites
how
contributes
growth,
yield,
Finally,
introduce
new
perspective
novel
method
showing
synthetic
community
construction
provides
effective
approach
unravel
plant–microbes
microbes–microbes
interplays.
Frontiers in Sustainable Food Systems,
Год журнала:
2021,
Номер
5
Опубликована: Фев. 15, 2021
The
rhizosphere
is
undoubtedly
the
most
complex
microhabitat,
comprised
of
an
integrated
network
plant
roots,
soil,
and
a
diverse
consortium
bacteria,
fungi,
eukaryotes,
archaea.
conditions
have
direct
impact
on
crop
growth
yield.
Nutrient-rich
environments
stimulate
yield
vice
versa.
Extensive
cultivation
exhaust
soils
which
need
to
be
nurtured
before
or
during
next
crop.
Chemical
fertilizers
are
major
source
nutrients
but
their
uncontrolled
widespread
usage
has
posed
serious
threat
sustainability
agriculture
stability
ecosystem.
These
chemicals
accumulated
in
drained
water,
emitted
air
where
they
persist
for
decades
causing
overall
Plant
growth-promoting
rhizobacteria
(PGPR)
present
convert
many
plant-unavailable
essential
e.g.,
nitrogen,
phosphorous,
zinc,
etc.
into
available
forms.
PGPR
produces
certain
hormones
(such
as
auxin,
cytokinin,
gibberellin),
cell
lytic
enzymes
(chitinase,
protease,
hydrolases,
etc.),
secondary
metabolites,
antibiotics,
stress
alleviating
compounds
(e.g.,
1-Aminocyclopropane-1-
carboxylate
deaminase),
chelating
agents
(siderophores),
some
signaling
N-Acyl
homoserine
lactones)
interact
with
beneficial
pathogenic
counterparts
rhizosphere.
multifarious
activities
improve
soil
structure,
health,
fertility,
functioning
directly
indirectly
support
under
normal
stressed
environments.
Rhizosphere
engineering
these
wide-ranging
application
not
only
fertilization
developing
eco-friendly
sustainable
agriculture.
Due
severe
climate
change
effects
plants
biology,
there
growing
interest
stress-resilient
PGPM
subsequent
induce
(drought,
salinity,
heat)
tolerance
mechanism
plants.
This
review
describes
three
components
explicit
focus
broader
perspective
that
could
facilitate
selected
hosts
serve
efficient
component