Abstract
Agriculture-oriented
microbiome
studies
try
to
develop
microbiota
beneficial
their
plant
hosts.
This
positive
goal
extends
the
soil
quality
driving
growth
and
disease
resistance.
In
research
aimed
at
identifying
causes
of
this
action,
a
common
interpretation
is
that
microbes
will
synthesize
metabolites
useful
view
assumes
important
microbial
are
exported
for
use
by
Yet,
seems
unlikely
essential
metabolites,
without
counterpart
imported
from
plants,
as
corresponding
syntheses
would
often
involve
consumption
resources
explicit
benefit
microbes.
Illustrating
function
with
example
Bacilli
Subtilis
clade,
we
emphasize
here
most
direct
access
contents
cells
through
cell
lysis,
phenomenon
linked
process
sporulation.
also
releases
macromolecules
digested
in
environment,
releasing
key
such
queuine,
an
base
analog
present
anticodon
some
transfer
RNAs.
overlooked
importance
lysis
could
be
major
cause
ubiquitous
presence
bacteriophages
microbiota.
Horticulturae,
Год журнала:
2025,
Номер
11(1), С. 64 - 64
Опубликована: Янв. 9, 2025
Soilless
cultivation
allows
for
the
exploitation
of
benefits
plant
growth-promoting
rhizobacteria
(PGPR)
without
loss
efficacy
observed
with
soil
inoculation.
In
this
study,
we
investigated
effects
a
PGPR
consortium
on
growth,
ecophysiology,
and
metabolic
profile
lettuce
(Lactuca
sativa
L.)
grown
in
an
aeroponic
system
under
low-nutrient
regime.
Overall,
biomass
increased
by
25%
PGPR-inoculated
plants
due
to
enhanced
leaf
root
growth.
The
rise
was
primarily
increase
number
average
mass,
coupled
higher
total
area.
addition,
inoculated
exhibited
altered
anatomy
characterized
palisade
parenchyma
thickness
reduced
airspace
area,
suggesting
improved
photosynthetic
efficiency
changes
mesophyll
conductance.
morphology
also
altered,
showing
lateral
development.
Furthermore,
inoculation
induced
significant
reprogramming
leaves,
affecting
several
pathways
related
development,
stress
responses.
These
findings
provide
valuable
insights
into
intricate
dialog
between
beneficial
microbes
demonstrate
that
integration
soilless
culture
analysis
ecophysiological,
anatomical,
metabolomic
responses
can
be
powerful
approach
accelerate
design
new
consortia
use
as
microbial
biostimulants.
International Journal of Plant Biology,
Год журнала:
2025,
Номер
16(1), С. 9 - 9
Опубликована: Янв. 9, 2025
This
article
presents
a
systematic
review
of
the
ecophysiological
mechanisms
underpinning
essential
role
plant-growth-promoting
microorganisms
(PGPMs)
in
improving
rice
yield
and
quality.
The
scientific
literature
is
thoroughly
reviewed,
highlighting
how
PGPMs
positively
influence
growth,
development,
health
plants.
Key
aspects,
such
as
nitrogen
fixation,
nutrient
solubilization,
hormone
production,
disease
resistance
induction,
are
emphasized.
Additionally,
technological
advancements
related
to
PGPM
use
analyzed,
including
identification
effective
strains,
formulation
enhanced
biofertilizers,
genetic
engineering.
concludes
that
represent
promising
tool
with
which
boost
sustainability
productivity
cultivation,
providing
robust
foundation
for
future
research
practical
applications
field
crucial
global
food
security.
Plant Signaling & Behavior,
Год журнала:
2025,
Номер
20(1)
Опубликована: Янв. 15, 2025
The
growing
human
population
and
abiotic
stresses
pose
significant
threats
to
food
security,
with
PGPR
favorable
as
biofertilizers
for
plant
growth
stress
relief.
In
one
study,
soil
samples
from
both
cultivated
uncultivated
plants
in
various
cities
were
used
isolate
rhizobacterial
populations.
Using
50
plants,
isolated
populations
screened
biochemical
changes,
PGP
activities
morphological
characteristics.
A
total
of
199
rhizobacteria
IAA
production.
strain
M28
produced
maximum
378.44
±
2.5
µg
ml−1,
M9
formed
only
34.72
0.15
ml−1.
About
19%
producers
Multan,
18%
Lahore,
15%
soils
Faisalabad
Sheikhupura,
while
7%
Gujrat.
21
isolates
drought
tolerant
−0.14Mpa,
14
those
PSB
15
N
fixers.
traits,
zinc
solubility
was
expressed
by
M4
2
0.5
cm
zone.
M22
amount
HCN,
40.12
0.052
ppm.
All
showed
diverse
behavior
biocompatibility,
motility
patterns
hydrophobicity.
Selected
strains
genetically
identified
ribotyping.
Multitrait
could
be
effective
rather
than
single
trait.
having
highest
production
IAA,
gelatinase,
methyl
red
positive
also
capable
nitrogen
fixation.
Moreover,
it
had
swimming
(8.9
mm)
swarming
(8.7
after
24
h,
indicating
its
best
traits
future
use.
Frontiers in Microbiology,
Год журнала:
2025,
Номер
16
Опубликована: Март 12, 2025
Introduction
Soil
microbiome
transplantation
is
a
promising
technique
for
enhancing
plant
holobiont
response
to
abiotic
and
biotic
stresses.
However,
the
rapid
assessment
of
microbiome-plant
functional
integration
in
short-term
experiments
remains
challenge.
Methods
This
study
investigates
potential
three
evergreen
sclerophyll
species,
Pistacia
lentiscus
(PL),
Rosmarinus
officinalis
(RO),
Juniperus
phoenicea
(JP),
serve
as
reservoir
microbial
communities
able
confer
enhanced
tolerance
drought
Salvia
cultivated
under
water
shortage,
by
analyzing
biomass
production,
phenotype,
ecophysiological
responses,
leaf
metabolome.
Results
Our
results
showed
that
inoculation
with
rhizomicrobiomes
did
not
enhance
total
biomass,
while
it
significantly
influenced
architecture,
ecophysiology,
metabolic
responses.
The
JP
rhizomicrobiome
led
significant
increase
root
resulting
smaller
leaves
higher
number.
These
morphological
changes
suggest
improved
acquisition
thermoregulation
strategies.
Furthermore,
distinct
stomatal
conductance
patterns
were
observed
plants
inoculated
microbiomes
from
PJ
PL,
indicating
altered
responses
stress.
metabolome
analysis
demonstrated
S.
.
All
promoted
accumulation
phenolic
compounds,
terpenoids,
alkaloids,
known
play
crucial
roles
defense
stress
response.
Five
molecules
(genkwanin,
beta-ionone,
sumatrol,
beta-peltatin-A-methyl
ester,
cinnamoyl-beta-D-glucoside)
commonly
accumulated
sage,
independently
microbiome.
unique
alterations
depending
on
specific
rhizomicrobiome,
highlighting
specialized
nature
plant-microbe
interactions
possible
use
these
biomarkers
monitor
recruitment
beneficial
microorganisms.
Discussion
provides
compelling
evidence
can
induce
phenotypic
recipient
plants,
potentially
their
resilience
scarcity.
findings
emphasize
importance
considering
multiple
factors,
including
physiology,
metabolomics,
when
evaluating
effectiveness
engineering
improving
tolerance.
Horticulturae,
Год журнала:
2025,
Номер
11(4), С. 374 - 374
Опубликована: Март 31, 2025
Water
scarcity
can
negatively
affect
crop
yield,
posing
a
significant
threat
to
global
food
security,
such
as
drought.
Plant
growth-promoting
rhizobacteria
(PGPR),
either
single
strains
or
synthetic
communities
(SynComs),
has
shown
promise
in
alleviating
drought
stress
various
plant
species.
In
this
study,
we
examined
the
effects
of
water
limitation
on
Salvia
officinalis
and
potential
SynCom
composed
five
phosphate-solubilizing,
auxin-producing,
and/or
nitrogen-fixing
Gram-negative
bacteria
enhance
growth
tolerance.
growth,
morphology,
physiology,
leaf
metabolomic
profiles
were
assessed
using
combination
physiological
measurements
LC-MS
untargeted
metabolomics.
Mild
induced
conservative
water-use
strategy
S.
officinalis,
characterized
by
increased
root-to-shoot
ratio
altered
without
compromising
photosynthetic
performance.
inoculation
under
well-watered
conditions
elicited
drought-like
responses,
including
transient
reductions
stomatal
conductance.
Leaf
analysis
revealed
that
influenced
abundance
several
metabolites,
biogenic
amines
dipeptides,
both
irrigation
regimes.
Notably,
histamine
α-ketoglutaric
acid
levels,
highlighting
impacts
quality.
Under
reduced
irrigation,
further
modulated
morphology
biomass
allocation,
promoting
thicker
leaves
root
allocation.
These
results
demonstrate
ability
modulate
physiology
metabolism
response
optimal
potentially
enhancing
resilience
directly
improving
growth.
The
study
also
highlights
complex
interactions
among
microbial
inoculation,
metabolite
profiles,
emphasizing
importance
considering
production
bioactive
compounds
when
developing
inoculants
for
edible
plants.
Open Access Journal of Microbiology & Biotechnology,
Год журнала:
2024,
Номер
9(2), С. 1 - 9
Опубликована: Апрель 2, 2024
In
the
face
of
complex
biotic
and
abiotic
stresses,
modern
agriculture
seeks
innovative
solutions
to
ensure
sustainable
crop
production.
Plant
Growth-Promoting
Rhizobacteria
(PGPR)
emerges
as
powerful
allies,
offering
a
approach
fortifying
plant
defense
mechanisms.
This
review
delves
into
harnessing
PGPR-mediated
priming
combat
both
stresses
in
agriculture.
Defense
priming,
sophisticated
mechanism
acquired
through
exposure
primary
stimuli,
empowers
plants
mount
quicker
more
resilient
responses
against
subsequent
challenges.
PGPR
induce
pre-conditioned
state
heightened
alertness,
enabling
rapid
robust
upon
stress
encounters.
paradigm
not
only
enhances
resilience
pathogens
environmental
stressors
but
also
promotes
practices
by
reducing
chemical
inputs.
The
critically
evaluates
mechanisms
underlying
emphasizing
its
potential
modulate
physiology,
metabolite
production,
increased
antioxidants
enzymes,
related
enzymes
activities
enhance
tolerance.
It
further
explores
how
can
improve
spectrum
stressors.
highlights
cost-effective,
enduring,
chemical-free,
method
for
managing
Implementing
this
strategy
offers
effective
protection
with
minimal
fitness
costs,
even
harsh
conditions.
