Frontiers in Microbiology,
Journal Year:
2022,
Volume and Issue:
13
Published: May 16, 2022
With
the
increasing
demand
and
quality
requirement
for
natural
nutritious
food
in
modern
society,
okra
has
attracted
much
attention
because
of
its
high
nutritional
value
remarkable
functionality.
However,
occurrence
postharvest
diseases
fresh
severely
limited
application
okra.
Therefore,
this
study,
dominant
pathogens
causing
such
as
soft
rot
were
isolated
from
naturally
decaying
It
was
identified
Mucor
circinelloides
by
morphological
characteristics
standard
internal
transcribed
spacer
ribosomal
DNA
sequence.
Furthermore,
biological
M.
studied,
inhibitory
effect
thymol/KGM/LG
(TKL)
edible
coating
solution
on
possible
mechanism
discussed.
In
addition,
TKL
had
a
dose-dependent
circinelloides,
with
50%
concentration
(EC50)
113.55
mg/L.
The
at
960
mg/L
thymol
completely
inhibited
mycelial
growth
spore
germination
circinelloides.
results
showed
that
best
carbon
source
maltose,
nitrogen
beef
extract
potassium
nitrate,
pH
6,
temperature
28°C,
NaCl
0.5%,
light
conducive
to
also
observed
scanning
electron
microscope
(SEM)
more
likely
destroy
cell
wall
integrity
inhibit
morphology
change
mycelium
structure.
Meanwhile,
activity
chitinase
(CHI),
an
enzyme
related
synthesis
significantly
decreased
after
being
treated
100
(TKL100).
content
Malondialdehyde
(MDA)
12
h
48
h,
which
may
cause
oxidative
damage
membrane.
polygalacturonase
(PG),
pectin
methylgalacturonase
(PMG),
cellulase
(Cx)
significantly.
good
bacteriostatic
pathogen,
main
might
be
membrane,
degradation
wall,
inhibition
metabolic
activities,
reduction
metabolites,
is
helpful
further
understand
pathogen
mechanism.
Journal of Agricultural and Food Chemistry,
Journal Year:
2022,
Volume and Issue:
70(40), P. 12784 - 12795
Published: Sept. 28, 2022
Banana
Fusarium
wilt
caused
by
oxysporum
f.
sp.
cubense
(Foc)
is
the
most
destructive
soil-borne
fungal
disease.
Tropical
race
4
(Foc
TR4),
one
of
strains
Foc,
can
infect
many
commercial
cultivars,
which
represents
a
threat
to
global
banana
production.
Currently,
there
are
hardly
any
effective
chemical
fungicides
control
To
search
for
natural
product-based
controlling
wilt,
we
identified
novel
strain
Streptomyces
yongxingensis
nov.
(JCM
34965)
from
marine
soft
coral,
bioactive
compound,
niphimycin
C,
was
isolated
using
an
activity-guided
method.
Niphimycin
C
exhibited
strong
antifungal
activity
against
Foc
TR4
with
value
1.20
μg/mL
EC50
and
obviously
inhibited
mycelial
growth
spore
germination
TR4.
It
functional
loss
mitochondria
disorder
metabolism
cells.
Further
study
showed
that
reduced
key
enzyme
activities
tricarboxylic
acid
(TCA)
cycle
electron
transport
chain
(ETC).
displayed
broad-spectrum
selected
12
phytopathogenic
fungi.
In
pot
experiments,
disease
indexes
in
plantlets
infection
roots.
Hence,
could
be
promising
agrochemical
fungicide
management
diseases.
Frontiers in Plant Science,
Journal Year:
2022,
Volume and Issue:
13
Published: May 11, 2022
Banana
(Musa
spp.)
is
an
important
fruit
crop
cultivated
in
most
tropical
countries.
Fusarium
wilt
caused
by
oxysporum
f.
sp.
cubense
race
4
(Foc
TR4)
the
destructive
fungal
disease.
Biocontrol
using
endophytic
microorganisms
considered
as
a
safety
and
sustainable
strategy.
Actinomycetes
have
potential
for
production
of
diverse
metabolites.
Isolation
actinomycetes
with
high
efficiency
broad-spectrum
antagonism
key
exploring
biocontrol
agents.
Our
previous
study
showed
that
total
144
were
isolated
from
different
tissues
medicinal
plants
Hainan,
China.
Especially,
strain
8ZJF-21
exhibited
antifungal
activity.
Its
morphological,
physiological,
biochemical
characteristics
consistent
genus
Streptomyces.
The
phylogenetic
tree
demonstrated
formed
distinct
clade
Streptomyces
malaysiensis.
Average
nucleotide
identity
(ANI)
was
98.49%
above
threshold
novel
species.
pot
experiment
revealed
malaysiensis
could
improve
plant
resistance
to
Foc
TR4
enhancing
expression
levels
defense-related
antioxidant
enzyme
genes.
It
also
promoted
growth
producing
several
extracellular
enzymes
Antifungal
mechanism
assays
S.
extract
inhibited
mycelial
spore
germination
vitro.
Pathogenic
cells
occurred
cytoplasmic
heterogeneity,
disappeared
organelles,
ruptured
ultrastructure.
Sequencing
annotation
genome
suggested
had
Nineteen
volatile
organic
compounds
obtained
Gas
Chromatography-Mass
Spectrometry
(GC-MS).
Hence,
strains
will
become
essential
agents
modern
agricultural
practice.
Journal of Fungi,
Journal Year:
2022,
Volume and Issue:
8(12), P. 1291 - 1291
Published: Dec. 9, 2022
Banana
Fusarium
wilt
caused
by
oxysporum
f.
sp.
cubense
tropical
race
4
(Foc
TR4)
is
one
of
the
most
destructive
banana
diseases
in
world,
which
limits
development
industry.
Compared
with
traditional
physical
and
chemical
practices,
biological
control
becomes
a
promising
safe
efficient
strategy.
In
this
study,
strain
Y1-14
strong
antagonistic
activity
against
Foc
TR4
was
isolated
from
rhizosphere
soil
plantation,
where
no
disease
symptom
detected
for
more
than
ten
years.
The
identified
as
Streptomyces
according
to
morphological,
physiological,
biochemical
characteristics
phylogenetic
tree
16S
rRNA.
also
showed
broad-spectrum
antifungal
selected
12
plant
pathogenic
fungi.
Its
extracts
inhibited
growth
spore
germination
destroying
integrity
cell
membrane
ultrastructure
mycelia.
Twenty-three
compounds
were
gas
chromatography–mass
spectrometry
(GC-MS).
mechanism
investigated
further
metabolomic
analysis.
Strain
significantly
affect
carbohydrate
metabolism
pathway
disrupting
energy
metabolism.
Agronomy,
Journal Year:
2025,
Volume and Issue:
15(3), P. 619 - 619
Published: Feb. 28, 2025
Fusarium
oxysporum
f.
sp.
cubense
(Foc)
poses
a
significant
threat
to
global
banana
production.
This
systematic
review
updates
current
knowledge
on
the
efficacy
of
various
antagonistic
microorganisms
in
controlling
Foc,
considering
recent
spread
this
disease
new
regions.
The
studies
were
systematically
analyzed,
focusing
methodologies,
results,
and
conclusions
provide
comprehensive
overview
research
its
practical
implications.
A
total
118
reviewed,
covering
use
such
as
Trichoderma
spp.,
Bacillus
Streptomyces
Pseudomonas
both
pure
cultures
consortia.
Most
focused
Foc
TR4
Cavendish
subgroup
bananas
originated
from
Asia.
Microbial
consortia
demonstrated
higher
control
percentage
with
lower
variability,
particularly
genera
Pseudomonas.
In
contrast,
more
commonly
used
for
Streptomyces.
choice
between
depends
genus
experimental
context,
each
approach
has
distinct
advantages.
Although
reviewed
generally
high
quality,
long-term
is
still
lacking.
Antagonistic
represent
promising
alternative
control,
although
their
specific
strain
environmental
conditions.
It
been
observed
that
inoculating
these
onto
seedlings
before
transplantation
or
combination
organic
matter
enhances
effectiveness.
Localized
testing
formulation
optimization
are
recommended
improve
application
preventive
suppressive
tools
soil
against
infections.
highlights
vast
diversity
microbial
agents
rates,
modes
action,
additional
benefits
plant
development
beyond
biocontrol.
Furthermore,
some
achieved
100%
at
level
under
controlled
These
findings
demonstrate
biological
viable
integrated
management.
Future
should
prioritize
approaches
facilitate
widespread
adoption
including
formulation,
field
application,
integration
other
methods.