Frontiers in Microbiology,
Journal Year:
2024,
Volume and Issue:
15
Published: Nov. 25, 2024
,
an
entomopathogenic
fungus,
infects
larvae
from
the
Lepidoptera:
Hepialidae
family,
forming
valuable
Chinese
cordyceps.
Mycoviruses
are
widespread
across
major
lineages
of
filamentous
fungi,
oomycetes,
and
yeasts
have
potential
to
influence
fungal
biology
ecology.
This
study
aimed
detect
mycovirus
within
Frontiers in Microbiology,
Journal Year:
2024,
Volume and Issue:
15
Published: May 23, 2024
Mycoviruses
have
been
found
in
various
fungal
species
across
different
taxonomic
groups,
while
no
viruses
reported
yet
the
fungus
Exserohilum
rostratum.
In
this
study,
a
novel
orfanplasmovirus,
namely
rostratum
orfanplasmovirus
1
(ErOrfV1),
was
identified
strain
JZ1
from
maize
leaf.
The
complete
genome
of
ErOrfV1
consists
two
positive
single-stranded
RNA
segments,
encoding
an
RNA-dependent
polymerase
and
hypothetical
protein
with
unknown
function,
respectively.
Phylogenetic
analysis
revealed
that
clusters
other
orfanplasmoviruses,
forming
distinct
phyletic
clade.
A
new
family,
Orfanplasmoviridae,
is
proposed
to
encompass
newly
discovered
its
associated
orfanplasmoviruses.
exhibits
effective
vertical
transmission
through
conidia,
as
evidenced
by
100%
presence
over
200
single
conidium
isolates.
Moreover,
it
can
be
horizontally
transmitted
turcicum
.
Additionally,
infection
cryptic
E.
because
there
were
significant
differences
mycelial
growth
rate
colony
morphology
between
ErOrfV1-infected
ErOrfV1-free
strains.
This
study
represents
inaugural
report
mycovirus
,
well
first
documentation
biological
characteristics
orfanplasmovirus.
These
discoveries
significantly
contribute
our
understanding
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 2, 2024
Abstract
Mycoviruses
represent
potential
role
in
the
biocontrol
approach
due
to
their
ability
reduce
both
virulence
and
vegetative
growth
some
phytopathogenic
fungi.
However,
mycoviruses
enhancing
damage
caused
by
these
fungi
remains
poorly
identified
characterized.
In
this
study,
a
novel
double-stranded
RNA
(dsRNA)
fungal
virus,
tentatively
named
Sinodiscula
camellicola
partitivirus
1
(ScPV1),
was
fungus
,
isolated
from
tea
leaves.
ScPV1
possesses
two
genomic
components
of
1835
1697
bp,
each
containing
an
open
reading
frame
(ORF)
that
encodes
putative
RNA-dependent
polymerase
(RdRp)
coat
protein
(CP),
respectively,
as
confirmed
mass
spectrometry.
Phylogenetic
analysis
amino
acid
sequences
RdRps
related
placed
within
newly
proposed
genus,
Epsilonpartitivirus,
family
Partitiviridae
.
Viral
purification
via
ultracentrifugation
transmission
electron
microscopy
observations
revealed
dsRNA
genomes
are
encapsidated
virus
particles
approximately
31
nm
size,
ranging
24.9
36.8
nm,
along
with
RdRp
unexpected
size.
Transfection
experiments
purified
virions
exhibited
transfectants
significant
reduced
rates
while
increased
virulence,
indicating
has
two-sided
effect
on
its
host
fungus.
This
finding
represents
advancement
understanding
complex
interactions
between
Author
summary
To
characterize
new
molecular
biological
traits
partitiviruses
will
provide
substantial
contributions
for
better
mycoviruses,
prevalent
across
wide
range
hosts,
including
plants,
protists,
Here,
we
partitivirus,
infecting
plant,
marking
first
report
plant.
is
characterized
varying
sizes,
expected
size
unique
acids,
distinct
morphological
traits.
Our
tests
generated
protoplast
transfection
have
rigorously
demonstrated
impairs
host.
instance
mycovirus
responsible
hypervirulence
exhibiting
dual
effects
through
virion-transfection,
well
case
conferring
promoting
We
anticipate
findings
significantly
advance
our
IntechOpen eBooks,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 15, 2024
Biocontrol,
or
protection,
involves
using
living
organisms
such
as
microbes,
insects,
and
their
by-products
to
safeguard
food
security
against
harmful
pathogens
pests
in
agriculture.
Excessive
use
of
synthetic
inputs
fertilizers
pesticides
farming
can
lead
soil
accumulation
crust
formation
over
time.
Inorganic
chemical
pollutants
enter
the
chain
through
plant
absorption
from
soil,
resulting
environmental
public
health
concerns.
Compensating
for
destructive
effects
on
agroecosystems
is
challenging.
Therefore,
it
important
discuss
future
restoration
microbial
communities
phyllosphere,
endosphere,
rhizosphere,
growth–promoting
microorganisms
natural
sources.
Local
governments
should
enforce
legal
restrictions
frequency
quantity
conventional
pesticide
use,
promote
bioagents,
encourage
farmers
stakeholders
adopt
alternatives.
This
chapter
introduces
various
bio-based
materials
that
serve
alternatives
chemicals
eradicating
minimizing
invasive
phytopathogen
species
biocontrol
protection.
Frontiers in Microbiology,
Journal Year:
2024,
Volume and Issue:
15
Published: Nov. 25, 2024
,
an
entomopathogenic
fungus,
infects
larvae
from
the
Lepidoptera:
Hepialidae
family,
forming
valuable
Chinese
cordyceps.
Mycoviruses
are
widespread
across
major
lineages
of
filamentous
fungi,
oomycetes,
and
yeasts
have
potential
to
influence
fungal
biology
ecology.
This
study
aimed
detect
mycovirus
within