Biology,
Год журнала:
2024,
Номер
13(2), С. 95 - 95
Опубликована: Фев. 2, 2024
Soil-beneficial
microbes
in
the
rhizosphere
play
important
roles
improving
plant
growth
and
health.
Root
exudates
key
plant–microbe
interactions
rhizobacterial
colonization.
This
review
describes
factors
influencing
dynamic
between
root
soil
microbiome
rhizosphere,
including
genotype,
development,
environmental
abiotic
biotic
factors.
We
also
discuss
of
specific
metabolic
mechanisms,
regulators,
signals
beneficial
bacteria
terms
colonization
ability.
highlight
latest
research
progress
on
regulating
Organic
acids,
amino
sugars,
sugar
alcohols,
flavonoids,
phenolic
compounds,
volatiles,
other
secondary
metabolites
are
discussed
detail.
Finally,
we
propose
future
objectives
that
will
help
us
better
understand
role
by
rhizobacteria
promote
sustainable
development
agriculture
forestry.
Agricultural Water Management,
Год журнала:
2024,
Номер
295, С. 108736 - 108736
Опубликована: Фев. 28, 2024
The
application
of
plant
growth-promoting
rhizosphere
(PGPR)
and
Gamma-polyglutamic
acid
(γ-PGA)
has
a
potential
role
in
improving
tolerance
under
abiotic
stress,
while
their
combined
effects
remain
largely
unexplored.
This
study
aimed
to
evaluate
the
joint
PGPR
γ-PGA
on
maize
growth
microbial
communities
salt
stress.
A
pot
experiment
consisting
two
strain
treatments
(CK,
M10),
(γ0,
γ1)
(S1,
S2)
was
performed
for
this
purpose.
results
showed
that
S1
treatment,
M10
could
increase
height,
leaf
area
dry
weight
by
11.27%,
36.45%
8.39%
respectively
(P<0.05).
Under
S2
corn
34.46%,
142.80%
55.81%
In
addition,
reduced
Na+
content
leaves
59.43%
significantly
increased
proportion
bacterial
Firmicutes
(mainly
including
Bacillus_firmus_g_Bacillus
Bacillus_selenatarsenatis)
soil.
Leaf-Na+
(P<0.001),
root-K+
(P<0.01),
leaf-total
phosphorus
(P<0.05),
root-total
(P<0.01)
electron
transfer
rate
had
significant
effect
changes
structure
community.
interaction
network
improve
numbers
were
directly
related
factors.
not
only
demonstrated
benefits
but
also
provided
insights
into
mechanism
from
perspective
community
changes.
Agronomy,
Год журнала:
2025,
Номер
15(1), С. 158 - 158
Опубликована: Янв. 10, 2025
The
Mediterranean
region
is
experiencing
severe
droughts
and
unprecedented
high
temperatures.
In
terms
of
salinity,
about
18
million
ha
land,
or
25%
the
total
irrigated
area
in
Mediterranean,
salt
affected.
use
halophytes
as
intercropping
species
to
mitigate
effects
stress
attractive.
Halophytes
have
a
great
capacity
maintain
their
productivity
this
extreme
environment,
thus
supporting
climate-appropriate
agriculture.
aim
study
was
evaluate
Salicornia
europaea
L.
subsp.
ramosissima
(glasswort)
under
field
conditions
soil
grown
sole
crop
(monocropping)
companion
(intercropping)
with
Beta
vulgaris
cicla
(Swiss
chard)
1:1
cropping
pattern.
trials
were
conducted
coastal
wetland
“King’s
Lagoon”,
private
nature
reserve
Apulia/Puglia
(southern
Italy),
during
two
consecutive
spring–summer
seasons
2023
2024
different
management
irrigation
fertilization.
These
performed
test
for
possible
interaction
effects.
results
showed
that
both
glasswort
chard
can
be
sustainably
slightly
saline
(ECe
range
4–8
dS
m−1).
contrast,
strongly
>
16
m−1)
prohibitive
chard,
an
intercrop,
but
largely
beneficial
glasswort.
Swiss
benefit
from
when
salinity
still
tolerable
(6.9
m−1),
showing
LER
(Land
Equivalent
Ratio)
≥
1.19.
Meanwhile,
did
not
significantly
improve
growth
considerably
(16.6
Higher
values
observed
contribution
intercrop
performance
greater
than
glasswort,
i.e.,
conditions.
This
means
significant
positive
effect
on
long
moderately
saline.
Glasswort
therefore
considered
valuable
model
environments.
integration
(possibly
together
other
local
halophytes)
into
diversified
systems
marginal
soils
promising
sustainable
agricultural
practice
environmentally
fragile
areas
such
wetlands,
swamps,
brackish
areas,
marshes.
Abstract
Background
Due
to
global
warming
and
gradual
climate
change,
plants
are
subjected
a
wide
range
of
environmental
stresses,
adversely
affecting
plant
growth
production
worldwide.
Plants
have
developed
various
mechanisms
overpower
these
abiotic
including
salt
stress,
drought,
high
light
intensity.
Apart
from
their
own
defense
strategies,
can
get
help
the
beneficial
endophytic
bacteria
inside
host
assist
them
in
enduring
severe
conditions.
A
previously
isolated
bacteria,
Burkholderia
seminalis
869T2,
vetiver
grass
produce
auxin,
synthesize
siderophore,
solubilize
phosphate.
The
B.
869T2
colonize
increase
bananas,
Arabidopsis
,
several
leafy
vegetables.
Results
We
further
demonstrated
that
different
parameters
pak
choi
were
significantly
increased
after
inoculating
under
normal,
salt,
drought
stress
conditions
compared
mock-inoculated
plants.
Both
transcriptome
analysis
quantitative
real-time
PCR
results
showed
expression
levels
genes
related
phytohormone
signal
transduction
pathways,
gibberellin,
cytokinin,
abscisic
acid
altered
inoculated
with
strain
comparison
control
treatments.
Furthermore,
accumulation
hydrogen
peroxide
(H
2
O
),
electrolyte
leakage
(EL),
malondialdehyde
(MDA)
lower
869T2-inoculated
than
stresses.
Conclusions
bacterium
may
affect
responses
reduce
oxidative
damage
tolerances
Environmental Microbiome,
Год журнала:
2025,
Номер
20(1)
Опубликована: Фев. 6, 2025
Abstract
The
shade
avoidance
response
triggers
a
dramatic
promotion
of
elongation
growth,
accompanied
by
significant
reprogramming
metabolic
pathways
as
plants
seek
to
prevent
overtopping
and
adapt
vegetative
shade.
Here
we
demonstrate
that
simulated
results
in
changes
the
structure
composition
phyllosphere
bacterial
microbiome.
Our
study
uncovered
shifts
diversity,
occurrence,
abundance
activity
bacteria
within
A
comparison
responses
both
wild-type
phytochrome
mutants,
which
inherently
exhibit
shade-avoidance
phenotype,
revealed
indirect
host
plant
physiology
direct
light
among
microbiota.
Hierarchical
clustering
patterns
further
suggested
over
third
taxa
constituting
core
microbiome
our
assay
show
some
degree
Bacteria
increased
on
with
phenotype
corresponded
genera
associated
beneficial
traits
such
enhanced
disease
resistance
growth
promotion.
findings
suggests
manipulate
their
under
conditions
strategy
optimise
fitness
when
competing
for
light.
We
discuss
implications
terms
furthering
understanding
plant-microbe
signalling
shaping
possibility
manipulating
health
an
agricultural
setting
at
high
planting
densities.
Insect-based
(silkworm
cocoons)
and
plant-based
(cotton
wool
pads
gauzes)
fiber
substrates
were
used
to
support
ameliorate
seed
germination
originating
from
trifoliate
orange
(Poncirus
trifoliata)
pomegranate
(Punica
granatum)
trees.
Three
different
commercial
formulations
of
beneficial
microorganisms
(Bacillus
spp.-Azotobacter
spp.,
Saccharomyces
boulardii,
cerevisiae)
administered
seeds
in
order
evaluate
their
contribution
growth.
The
silkworm
cocoons
provided
better
rates
for
P.
trifoliata
(83.33%)
among
the
tested
media
without
any
microbial
supplementation.
These
increased
towards
absolute
maximum
(100%)
when
Bacillus
S.
boulardii
cerevisiae
applied.
Furthermore,
inoculums
spp.
2
mL
3
g
raised
ability
by
30–33.33%
50–67.7%,
respectively,
on
cocoon
compared
plant-derived,
cellulosic
under
same
biotic
exposure.
On
increasing
size
applied
inoculums,
moved
optimum
suboptimum
all
media.
Examination
multipartite
pH
compatibility
(between
seeds,
microorganisms,
media)
was
functional
value.
In
conclusion,
both
tree
species
can
be
using
bacterial
yeast
supplementation,
including
medical-grade
environmentally
friendly
materials
such
as
insect-
substrates.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Март 21, 2025
Bacillus
species
are
recognized
as
plant
growth-promoting
bacteria
(PGPB),
yet
the
mechanisms
behind
their
crop
growth
promotion
remain
elusive.
This
study
is
designed
to
explore
(PGP)
effects
of
megaterium
GXU087
on
soybeans
and
uncover
underlying
mechanism.
In
vitro
,
exhibited
various
PGP
traits,
including
phosphate
solubilization,
nitrogen
fixation,
production
exopolysaccharide,
biofilm
formation.
Pot
experiments
indicated
that
significantly
enhanced
soybean
growth,
leading
a
remarkable
increase
in
fresh
weight
(
p
<
0.05).
Additionally,
nodulation
parameters
were
improved.
Specifically,
10%
concentration
extracellular
extracts
from
exerted
significant
nodulation,
with
both
nodule
number
increasing
UPLC-MS
analysis
verified
secreted
indole-3-lactic
acid
(ILA)
at
232.7
ng/mL.
assays
further
demonstrated
this
ILA
effectively
promoted
within
range
0.1-10
mg/L.
However,
exogenous
application
did
not
stimulate
rhizobia
reproduction,
suggesting
bacterial
does
promote
by
enhancing
growth.
Notably,
first
report
B.
secreting
promoter
soybeans.
Our
findings
offer
new
insights
into
mechanism
action
contribute
understanding
microbe-induced
crops.
