Plants,
Journal Year:
2025,
Volume and Issue:
14(7), P. 1107 - 1107
Published: April 2, 2025
Halotolerant,
plant
growth-promoting
rhizobacteria
(PGPR)
are
known
to
alleviate
growth
under
abiotic
stresses,
especially
those
isolated
from
saline
arid
soils.
In
this
study,
66
bacterial
isolates,
obtained
various
habitats
in
Saudi
Arabia,
were
characterized
for
their
(PGP)
traits,
and
screened
heat
salt
stress
resilience.
Finally,
selected
halotolerant
PGPR
strains
assessed
potential
improve
maize
(Zea
mays
L.)
salinity
using
vitro
assays.
Our
results
indicated
that
many
isolates
possessed
key
PGP
traits
such
ACC
deaminase,
N-fixation,
phytohormone
production.
Additionally,
several
able
tolerate
high
temperatures,
20
classified
as
halotolerant.
Furthermore,
among
the
Pseudomonas
soyae
(R600),
Bacillus
haynesii
(SFO145),
Salinicola
halophilus
(SFO075),
Staphylococcus
petrasii
(SFO132)
significantly
enhanced
parameters
conditions
when
compared
uninoculated
plants.
These
good
candidates
be
explored
bioinoculants
sustainable
agriculture
soil
conditions.
Plant Stress,
Journal Year:
2023,
Volume and Issue:
11, P. 100341 - 100341
Published: Dec. 28, 2023
Through
a
variety
of
mechanisms,
including
increasing
the
amount
readily
available
mineral
nutrients,
regulating
phytohormone
levels,
and
biocontrol
phytopathogens,
plant
growth-promoting
rhizobacteria
(PGPR)
associated
with
rhizosphere
either
directly
or
indirectly
stimulates
growth
development.
The
establishment,
survival,
persistence
PGPR
inoculants
are
widely
acknowledged
to
be
contingent
upon
these
two
parameters,
in
addition
intricate
network
interactions
within
rhizosphere.
In
general,
soil
is
moist
environment
significant
amounts
carbon
that
have
been
degraded
harbors
large
population
microbes.
rhizo-microbiome
crucial
agriculture
because
wide
root
exudates
cell
debris
attract
unique
distinct
patterns
microbial
colonization.
plays
role
manufacture
regulation
extracellular
molecules,
hormones,
secondary
metabolites,
antibiotics,
various
signaling
chemicals.
Additionally,
composition
influences
texture
enhancement.
Research
has
shown
can
used
treat
plants
inoculate
promote
alters
physiology
entire
plant,
which
enhances
nutrient
uptake
affects
effectiveness
activity.
specific
biochemical
processes
involved
this
phenomenon
often
not
well
understood.
Nevertheless,
new
studies
shed
light
on
mechanisms
via
by
induce
responses,
both
at
local
systemic
levels.
Insufficient
information
regarding
impact
mechanism
molecules
metabolic
pathways
characteristics.
Consequently,
review
will
concentrate
elucidating
identifying
essential
exert
influence
root-microbe
interactions.
Frontiers in Plant Science,
Journal Year:
2024,
Volume and Issue:
15
Published: July 15, 2024
Global
climate
change
and
the
decreasing
availability
of
high-quality
water
lead
to
an
increase
in
salinization
agricultural
lands.
This
rising
salinity
represents
a
significant
abiotic
stressor
that
detrimentally
influences
plant
physiology
gene
expression.
Consequently,
critical
processes
such
as
seed
germination,
growth,
development,
yield
are
adversely
affected.
Salinity
severely
impacts
crop
yields,
given
many
plants
sensitive
salt
stress.
Plant
growth-promoting
microorganisms
(PGPMs)
rhizosphere
or
rhizoplane
considered
“second
genome”
they
contribute
significantly
improving
growth
fitness
under
normal
conditions
when
stress
salinity.
PGPMs
crucial
assisting
navigate
harsh
imposed
by
By
enhancing
nutrient
absorption,
which
is
often
hampered
high
salinity,
these
improve
resilience.
They
bolster
plant’s
defenses
increasing
production
osmoprotectants
antioxidants,
mitigating
salt-induced
damage.
Furthermore,
supply
hormones
like
auxins
gibberellins
reduce
levels
hormone
ethylene,
fostering
healthier
growth.
Importantly,
activate
genes
responsible
for
maintaining
ion
balance,
vital
aspect
survival
saline
environments.
review
underscores
multifaceted
roles
supporting
life
stress,
highlighting
their
value
agriculture
salt-affected
areas
potential
impact
on
global
food
security.
ACS Omega,
Journal Year:
2025,
Volume and Issue:
10(1), P. 940 - 954
Published: Jan. 5, 2025
Increased
soluble
salts
in
soil
and
irrigation
water
threaten
the
sustainability
of
crops.
This
causes
food
insecurity
directly
by
reducing
staple
crop
yield
indirectly
limiting
fodder
forage
production.
Recently,
plant-growth-promoting
rhizosphere
microorganism
utilization
improved
productivity
under
stress.
Therefore,
this
research
was
conducted
to
find
Sorghum
bicolor
growth
improvement
potential
exogenous
application
five
different
Pseudomonas
strains
salinity
a
pot
experiment.
The
applied
with
1/2-strength
Hoagland's
nutrient
solution
as
0
100
mM
NaCl
for
30
days.
Results
indicated
that
reduced
vegetative
parameters
stress-responsive
biochemicals
nonbacterial
treated
plants.
However,
plants
exhibited
notable
increases
growth,
relative
content,
antioxidant
enzyme
activities,
osmolytes,
photosynthetic
pigments
salinity.
ionic
imbalance
also
due
improving
K+
K+/Na+
ratios
P.
aeruginosa
strain
SAHK
(OQ194056)
putida
AHK_SHA007
(OR468335)
were
found
be
promising
compared
other
increasing
stress
tolerance.
augmentation
plant's
system
maintenance
ion
homeostasis
served
strategy
enhance
plant
salt
Frontiers in Plant Science,
Journal Year:
2024,
Volume and Issue:
14
Published: Jan. 24, 2024
Many
recent
studies
have
highlighted
the
importance
of
plant
growth-promoting
(rhizo)bacteria
(PGPR)
in
supporting
plant’s
development,
particularly
under
biotic
and
abiotic
stress.
Most
focus
on
traits
selected
strains
latter’s
effect
biomass,
root
architecture,
leaf
area,
specific
metabolite
accumulation.
Regarding
energy
balance,
growth
is
outcome
an
input
(photosynthesis)
several
outputs
(i.e.,
respiration,
exudation,
shedding,
herbivory),
frequently
neglected
classical
PGPR-plant
interaction.
Here,
we
discuss
primary
evidence
underlying
modifications
triggered
by
PGPR
their
metabolites
ecophysiology.
We
propose
to
detect
PGPR-induced
variations
photosynthetic
activity
using
gas
exchange
recommend
setting
up
correct
timing
for
monitoring
responses
according
objectives
experiment.
This
research
identifies
challenges
tries
provide
future
directions
scientists
working
interactions
exploit
potential
microorganisms’
application
improving
value.
