Agricultural Pest Management: The Role of Microorganisms in Biopesticides and Soil Bioremediation
Plants,
Год журнала:
2024,
Номер
13(19), С. 2762 - 2762
Опубликована: Окт. 1, 2024
Pesticide
use
in
crops
is
a
severe
problem
some
countries.
Each
country
has
its
legislation
for
use,
but
they
differ
the
degree
of
tolerance
these
broadly
toxic
products.
Several
synthetic
pesticides
can
cause
air,
soil,
and
water
pollution,
contaminating
human
food
chain
other
living
beings.
In
addition,
them
accumulate
environment
an
indeterminate
amount
time.
The
agriculture
sector
must
guarantee
healthy
with
sustainable
production
using
environmentally
friendly
methods.
this
context,
biological
biopesticides
from
microbes
plants
are
growing
green
solution
segment.
pests
attack
worldwide,
including
weeds,
insects,
nematodes,
microorganisms
such
as
fungi,
bacteria,
viruses,
causing
diseases
economic
losses.
bioproducts
microorganisms,
microbial
(MBPs)
or
alone,
practice
due
to
intense
research
world.
Mainly,
baculoviruses
have
been
used
sources
biomolecules
secondary
metabolites
biopesticide
use.
Different
methods,
direct
soil
application,
spraying
techniques
endotherapy,
seed
treatment,
used.
Adjuvants
like
surfactants,
protective
agents,
carriers
improve
system
different
formulations.
tool
bioremediation
environment.
This
review
summarizes
topics,
focusing
on
origin.
Язык: Английский
Parasitism by Entomopathogenic Fungi and Insect Host Defense Strategies
Microorganisms,
Год журнала:
2025,
Номер
13(2), С. 283 - 283
Опубликована: Янв. 27, 2025
Entomopathogenic
fungi,
a
group
of
insect
pathogens,
are
characterized
by
high
insecticidal
efficacy
and
minimal
environmental
impact.
They
commonly
used
as
biopesticides
for
pest
control
due
to
their
significant
practical
value.
We
here
classify
entomopathogenic
fungi
according
the
process
fungal
infection
in
hosts,
changes
host
behavior
during
infection,
mechanisms
spore
transmission,
review
strategies
employed
insects
resist
including
physical
barrier
defenses,
immune
system
behavioral
avoidance
pathogens.
This
also
discusses
pathogenic
on
closely
linked
co-evolution
between
pathogens
defenses.
In
conclusion,
perspective
future
research
is
provided,
emphasizing
impact
population
density
concentration
environment
disease
outbreaks.
Язык: Английский
Entomopathogenic fungi in crops protection with an emphasis on bioactive metabolites and biological activities
World Journal of Microbiology and Biotechnology,
Год журнала:
2024,
Номер
40(7)
Опубликована: Май 29, 2024
Язык: Английский
Ovicidal, larvicidal and pupicidal activity of the ethyl acetate extracts from soil actinomycetes against tobacco caterpillar, Spodoptera litura (Lepidoptera: Noctuidae)
Journal of Natural Pesticide Research,
Год журнала:
2024,
Номер
10, С. 100090 - 100090
Опубликована: Июль 18, 2024
Actinomycetes
are
known
to
produce
wide-spectrum
of
secondary
metabolites
which
has
a
wide
variety
biological
activities
including
insecticidal
property.
Spodoptera
litura
is
serious
pest
that
damage
various
commercial
cash
crops
directly
affects
the
agricultural
productivity.
The
present
study
isolate
soil
actinomycetes
from
terrestrial
samples
collected
eastern
ghats
and
screened
them
with
screening
methods.
There
were
around
100
obtained
using
serial
dilution
method.
It
was
subjected
antimicrobial
streak
method
(data
not
shown)
identified
active
isolates.
most
seven
isolates
their
extracted
ethyl
acetate
as
solvent.
All
ethlyacetae
extracts
performed
ovicidal,
larvicidal
pupicidal
bioassays
against
insect
litura.
Based
on
calculated
LC50
values,
effective
crude
extract
found
be
Streptomyces
Sp.
ERI-TVM-055,
extract.
exhibited
%
ovicidal
activity
at
lowest
values
2.3330
ppm
25.423
LC50.
also,
6.273
ppm.
Similarly,
sp.
ERI-TVM-057,
S.
eggs
11.025
Over
all
tested
isolate,
significant
ERI-TVM-055.
GC-MS
analysis
major
bio-active
molecules
identified.
Several
compounds
in
by
spectrum.
Benzene
acetic
acid
(30.19
%)
Acetamide,
N-(2-
Phenylethyl)
(68.37
for
actinomycetes.
concluded
ERI-TVM-055
can
used
microbial
pesticides
one
it
leads
identify
safe
environments.
Язык: Английский
Secondary metabolites in Cordyceps javanica with insecticidal potential
Pesticide Biochemistry and Physiology,
Год журнала:
2024,
Номер
204, С. 106076 - 106076
Опубликована: Авг. 5, 2024
Язык: Английский
Potential of indigenous entomopathogenic fungi diversity in the maize rhizosphere
BIO Web of Conferences,
Год журнала:
2024,
Номер
143, С. 01023 - 01023
Опубликована: Янв. 1, 2024
Modern
agriculture
faces
significant
overreliance
on
chemical
pesticides,
leading
to
environmental
pollution
and
pest
resistance.
As
a
promising
alternative,
entomopathogenic
fungi
(EPF)
offer
biological
approach
control.
This
study
investigates
the
hypovirulence
virulence
effects
of
EPF
corn
cucumber
plants
by
measuring
their
Disease
Severity
Index
(DSI).
The
treatment
involves
isolating
applying
seeds
observe
pathogenic
impact.
DSI,
which
measures
disease
intensity,
is
used
determine
whether
are
virulent
(DSI
≥
2)
or
hypovirulent
<
2).
exposing
seedlings
fungal
isolates
monitoring
symptoms,
such
as
brown
hypocotyls,
withered
leaves,
seed
death.
Isolates
like
J5S1U2,
J3S1U2,
J2S2U1,
J2SU4
were
found
be
towards
cucumber,
causing
abnormal
germination
severe
stress.
In
contrast,
isolates,
J4S2U2,
J3S2U1,
T5U1O,
caused
mild
including
light
patches
under
0.5
cm
hypocotyls
without
wilting,
making
them
safer
for
agricultural
use.
emphasizes
selecting
based
crop-specific
virulence,
aiming
optimize
control
strategies.
Hypovirulent
in
particular,
identified
suitable
candidates
integrated
management,
they
minimize
plant
stress
while
offering
effective
Язык: Английский
First Activity of Aspergillus flavus as Entomopathogen Infecting Diaphania indica and Control Efficacy Across Different Developmental Stages
Horticulturae,
Год журнала:
2024,
Номер
10(12), С. 1315 - 1315
Опубликована: Дек. 10, 2024
Diaphania
indica
(Lepidoptera:
Crambidae)
is
one
of
the
most
important
pests
infesting
many
cucurbitaceous
vegetables.
During
rearing
insect
eggs,
we
observed
a
fungal
infection
in
these
eggs
which
causes
death
pests.
Therefore,
this
work
aimed
to
isolate
and
identify
fungus
by
amplifying
internal
transcribed
spacer
(ITS)
region
rDNA,
as
well
evaluating
efficiency
control.
Aspergillus
flavus,
‘PP125556’,
showcased
robust
pathogenicity
against
range
D.
The
results
showed
that
colonies
‘PP125556’
cultivated
on
potato
dextrose
agar
(PDA)
exhibited
distinctive
morphological
characteristics,
transitioning
from
pristine
white
verdant
green.
Bioassays
demonstrated
concentration-dependent
mortality
rates
larvae
adults
when
exposed
varying
concentrations
conidia,
with
highest
concentration
(1
×
109
conidia/mL)
inducing
significant
death,
(53.06%
for
70.57%
larvae,
86.65%
adults).
Furthermore,
examination
under
stereomicroscope
revealed
conspicuous
external
symptoms
infected
including
reduced
mobility,
darkened
body
pigmentation,
emergence
hyphae,
indicative
mortality.
Additionally,
inhibited
hatching
green
while
displayed
hyphae
colonization,
underscoring
potent
biocontrol
efficacy
A.
flavus
across
diverse
developmental
stages.
Язык: Английский