Bio-Lectura Jurnal Pendidikan Biologi,
Journal Year:
2024,
Volume and Issue:
11(1), P. 113 - 121
Published: April 18, 2024
This
study
aims
to
determine
the
morphological
and
physiological
properties
of
Phosphate
Solubilizing
Microbes
(MPF)
Azotobacter.
The
method
used
was
test
using
gram
staining
tests
biochemical
based
on
cell
activity
by
looking
at
interaction
bacterial
metabolism
with
reagent
media.
Data
analysis
examined
reaction
isolated
results
showed
that
observations
MPF,
colonies
a
slightly
milky
white
color,
round,
convex,
slimy
shape,
1-2
mm
in
diameter
flattened,
Gram-positive.
Azotobacter
shows
characteristics
transparent
flat
edges,
slimy,
an
average
1
mm,
is
Gram-negative;
whereas
for
catalase
oxidation
tests,
characteristic
MPF
Azotobacter,
each
positive
(+)
effect,
as
seen
from
formation
bubbles
results.
Tests
motility
O2
requirements
show
both
bacteria
are
motile,
mobile
aerobic
or
require
oxygen
growth.
resistance
pH
range
more
resistant
extreme
acid-base
3-9,
while
could
only
survive
5-9.
glucose
sucrose
fermentation
did
not
form
gas
(-)
no
color
change(-).
At
same
time,
but
change
(-).
Microorganisms,
Journal Year:
2023,
Volume and Issue:
11(12), P. 2904 - 2904
Published: Dec. 1, 2023
Phosphorus
is
an
essential
nutrient
for
all
life
on
earth
and
has
a
major
impact
plant
growth
crop
yield.
The
forms
of
phosphorus
that
can
be
directly
absorbed
utilized
by
plants
are
mainly
HPO42-
H2PO4-,
which
known
as
usable
phosphorus.
At
present,
the
total
content
soils
worldwide
400-1000
mg/kg,
only
1.00-2.50%
plant-available,
seriously
affects
development
agriculture,
resulting
in
high
level
scarcity
available
Traditional
methods
applying
fertilizer
cannot
address
deficiency
problems;
they
harm
environment
ore
material
nonrenewable
natural
resource.
Therefore,
it
imperative
to
find
alternative
environmentally
compatible
economically
viable
strategies
scarcity.
Phosphorus-solubilizing
bacteria
(PSB)
convert
insoluble
soil
into
plants,
thus
improving
uptake
utilization
plants.
However,
there
no
clear
systematic
report
mechanism
action
PSB.
this
paper
summarizes
discovery
process,
species,
distribution
PSB,
focusing
physiological
mechanisms
outlining
processes
acidolysis,
enzymolysis,
chelation
complexation
reactions
related
genes
regulating
PSB
acidolysis
enzymatic
well
phosphate
transport
molecular
direction
its
pathway
examined.
effects
structure
abundance
microbial
communities
also
described,
illustrating
how
interact
with
microorganisms
indirectly
increase
amount
soil.
And
three
perspectives
considered
further
exploring
utilizing
synergistic
multi-omics
approach,
PSB-related
regulatory
different
levels
investigating
application
fungicide.
This
aims
provide
theoretical
support
providing
optimal
management
elemental
future.
Frontiers in Plant Science,
Journal Year:
2024,
Volume and Issue:
15
Published: April 29, 2024
Sustainable
food
security
and
safety
are
major
concerns
on
a
global
scale,
especially
in
developed
nations.
Adverse
agroclimatic
conditions
affect
the
largest
agricultural-producing
areas,
which
reduces
production
of
crops.
Achieving
sustainable
is
challenging
because
several
factors,
such
as
soil
flooding/waterlogging,
ultraviolet
(UV)
rays,
acidic/sodic
soil,
hazardous
ions,
low
high
temperatures,
nutritional
imbalances.
Plant
growth-promoting
rhizobacteria
(PGPR)
widely
employed
in-vitro
they
recognized
more
environmentally
sustainably
friendly
approach
to
increasing
crop
yield
contaminated
fertile
soil.
Conversely,
use
nanoparticles
(NPs)
an
amendment
has
recently
been
proposed
economical
way
enhance
texture
improving
agricultural
yields.
Nowadays,
various
research
experiments
have
combined
or
individually
applied
with
PGPR
NPs
for
balancing
elements
response
control
adverse
situations,
expectation
that
both
additives
might
perform
well
together.
According
findings,
interactive
applications
significantly
increase
yields
than
alone.
The
present
review
summarized
functional
mechanistic
basis
role
NPs.
However,
this
article
focused
potential
direction
realize
possible
interaction
at
large
scale
upcoming
years.
Journal of Agricultural and Food Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Phosphorus
applications
in
agriculture
can
lead
to
significant
environmental
impacts,
necessitating
a
revolution
current
agricultural
practices.
This
study
explores
the
potential
of
hydroxyapatite
nanoparticles
(nHAPs)
synthesized
from
poultry
bones
as
P
fertilizers.
nHAPs
were
produced
at
300
°C
(nHAP300)
and
700
(nHAP700),
their
effectiveness
was
evaluated.
An
vitro
solubilization
test
with
Pseudomonas
alloputida
evaluated
bacterium's
ability
solubilize
nanoparticles,
assessing
dissolved
organic
acids
produced.
Additionally,
soil
leaching
measured
losses
bioavailable
compared
conventional
fertilizer,
triple
superphosphate
(TSP).
nHAP300
displayed
heterogeneous
sizes,
while
nHAP700
approximately
100
nm
size,
content
8.8%
19.4%,
respectively.
successfully
solubilized
both
types
demonstrating
higher
solubility
than
nHAP300.
The
TSP
treatment
resulted
(6.35
mg)
nHAP
treatments
(nHAP300
0.32
mg;
0.28
mg),
indicating
for
recycling
waste.
Our
findings
indicate
that
are
more
efficient
release
but
less
prone
Utilizing
these
enables
phosphorus
recovery
waste
holds
sustainable
applications.
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY,
Journal Year:
2025,
Volume and Issue:
75(4)
Published: April 25, 2025
A
phosphate-solubilizing
bacterial
strain,
designated
C3
T
,
was
isolated
from
the
rhizosphere
of
sorghum.
The
taxonomic
classification
this
novel
isolate
investigated
by
using
a
polyphasic
approach.
Cells
strain
were
Gram-stain-negative,
facultatively
anaerobic
and
motile
short
rods
with
polar
flagellum.
Phylogenetic
analyses
based
on
16S
rRNA
gene
indicated
that
showed
high
similarity
(98.66%)
to
certain
Pantoea
species,
indicating
belongs
genus.
genome
5.05
Mb
in
size
G+C
content
51.1
mol%.
Whole-genome
analysis
revealed
shared
21.60–27.10%
digital
DNA–DNA
hybridization
values
78.35–83.87%
average
nucleotide
identity
closely
related
species;
both
below
accepted
thresholds
for
defining
species.
predominant
cellular
fatty
acids
C
16:0
summed
feature
3
(C
16:1
ω6c
and/or
16
:1
ω7c),
8
18:
1
ω7c
18:1
ω6c),
2
12:
0
aldehyde
14:0
3OH
iso
I
an
unidentified
acid
10.9525
chain
length)
17:0
cyclo.
Apart
ability
solubilize
phosphates,
stain
exhibited
other
vitro
plant
growth-promoting
activities
such
as
K,
Ca
Si
solubilization,
production
indole-3-acetic
(IAA)
siderophores.
Several
genes
phosphate
siderophore
biogenesis
IAA,
cytokinin
gamma-aminobutyric
identified
genome.
Summarizing,
phylogenetic,
genomic,
phenotypic
chemotaxonomic
criteria,
represents
species
genus
Pantoea,
which
name
phytostimulans
sp.
nov.
is
proposed.
type
(=CECT
31163
=NCIMB
15596
).
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Feb. 1, 2024
Abstract
A
novel
bacterium,
designated
strain
MMK2
T
,
was
isolated
from
a
surface-sterilised
root
nodule
of
Trifolium
rubens
plant
growing
in
south-eastern
Poland.
Cells
were
Gram
negative,
non-spore
forming
and
rod
shaped.
The
had
the
highest
16S
rRNA
gene
sequence
similarity
with
P.
endophytica
(99.4%),
leporis
(99.4%)
rwandensis
(98.8%)
rodasii
(98.45%).
Phylogenomic
analysis
clearly
showed
that
an
additional
strain,
MMK3,
should
reside
genus
Pantoea
they
most
closely
related
to
.
Genome
comparisons
shared
82.96–93.50%
average
nucleotide
identity
26.2–53.
2%
digital
DNA:DNA
hybridization
species.
Both
strains
produced
siderophores
able
solubilise
phosphates.
also
produce
indole-3-acetic
acid.
tested
differed
their
antimicrobial
activity,
but
both
inhibit
growth
Sclerotinia
sclerotiorum
10Ss01.
Based
on
results
phenotypic,
phylogenomic,
genomic
chemotaxonomic
analyses,
MMK3
belong
species
for
which
name
trifolii
sp.
nov.
is
proposed
type
(=
DSM
115063
=
LMG
33049
).