Plant Disease,
Journal Year:
2023,
Volume and Issue:
107(9), P. 2891 - 2891
Published: April 21, 2023
Panax
notoginseng
(Burkill)
F.H.
Chen,
known
as
''sanqi'',
is
widely
used
for
its
medicinal
and
tonic
effects
in
China,
such
treatment
of
cardiovascular
diseases
antioxidant
effects.
However,
root
rot
disease
the
most
destructive
that
hampers
industrial
development
(Mi
et
al.
2017).
In
August
2018
2019,
samples
displaying
symptoms
rot,
unnormal,
stunted
growth
chlorotic
leaves,
were
dug
out
with
a
shovel
put
clean
sample-bags
from
four
production
bases
Wenshan
(around
23.5°
N;
104°
E),
Yunnan
province,
biggest
"sanqi"
area
over
20
thousand
ha.
Among
bases,
incidence
typically
ranged
10%
to
20%,
but
few
number
severe
cases,
exceeded
70%.
Typical
symptomatic
tubers
washed
tap
water,
surface-sterilized
5%
NaClO
1
min
followed
by
70%
alcohol
30
s,
rinsed
three
times
sterile
water.
The
diseased
tissues
excised
placed
on
rye
sucrose
agar
medium
(RSA)
supplemented
25
mg/L
rifampin
50
kanamycin,
then
incubated
at
25°C
dark
five
days.
Colonies
different
features
grew
pieces
twenty
oomycete-like
colonies,
(white,
dense,
aerial
mycelia
rapid
radiate
growth)
chosen
further
investigation.
Microscopic
observations
showed
terminal
intercalary
hyphal
swellings,
which
either
globose
or
limoniform,
thin-walled,
mostly
smooth,
13-28
µm
wide
(average
20.3
µm).
Oogonia
rarely
fusiform,
intercalary,
11-19
13
µm),
provided
varying
blunt,
digitate
projections.
Oospores
plerotic,
aplerotic,
16-19
μm
18.6
μm).
Antheridia
usually
originated
various
distances
oogonium
appeared-
clavate
crook-necked,
making
apical
contact
oogonium.
Based
typical
morphological
described,
isolates
putatively
identified
Pythium
spinosum
(van
der
Plaats-Niterink
1981).
internal
transcribed
spacer
region
(ITS)
cytochrome
c
oxidase
subunit
II
(CoxII)
SQ00803
SQ00903-1
sequenced
using
universal
primers
ITS1/ITS4
FM58/FM66
(Villa
2006).
nucleotide
sequences
deposited
GenBank
accession
numbers
MN369530,
MN370548,
MN561687
MN561688,
respectively.
Blastn
analysis
ITS
99.58%
similarity
those
Globisporangium
CBS275.67
CBS276.67
(accession
AY598701
HQ643792).
CoxII
99.82%
100%
G.
GU071755
AF196616).
For
pathogenicity
tests,
nine
two-year-old
healthy
sanqi
plants
grown
sterilized
substrate
plastic
pots
under
greenhouse
conditions
inoculated
5×104
CFU/ml
zoospore
suspension
root-drenching
method
(Dixon
1984).
Three
non-inoculated
drenched
water
controls.
All
chamber
16/8-h
photoperiod.
After
two
weeks,
discoloration
chlorosis
leaves
water-soaked
rot.
Control
symptomless
healthy.
resembling
re-isolated
infected
same
spinosum,
thus
fulfilling
Koch's
postulates.
originally
isolated
seedlings
Anthirrhinum
majus
has
been
reported
cause
many
plant
species
worldwide
(Lévesque
De
Cock
2004).
Recently,
based
whole
genome
sequencing
phylogenomic
analysis,
P.
was
transferred
genus.
Therefore,
now
classified
(Hai
2022).
To
our
knowledge,
this
first
report
causing
China.
This
research
will
contribute
integrated
management
strategies
Fungal Diversity,
Journal Year:
2024,
Volume and Issue:
125(1), P. 1 - 71
Published: March 20, 2024
Abstract
The
field
of
mycology
has
grown
from
an
underappreciated
subset
botany,
to
a
valuable,
modern
scientific
discipline.
As
this
study
grown,
there
have
been
significant
contributions
science,
technology,
and
industry,
highlighting
the
value
fungi
in
era.
This
paper
looks
at
current
research,
along
with
existing
limitations,
suggests
future
areas
where
scientists
can
focus
their
efforts,
mycology.
We
show
how
become
important
emerging
diseases
medical
discuss
trends
potential
drug
novel
compound
discovery.
explore
phylogenomics,
its
potential,
outcomes
address
question
phylogenomics
be
applied
fungal
ecology.
In
addition,
functional
genomics
studies
are
discussed
importance
unravelling
intricate
mechanisms
underlying
behaviour,
interactions,
adaptations,
paving
way
for
comprehensive
understanding
biology.
look
research
building
materials,
they
used
as
carbon
sinks,
biocircular
economies.
numbers
always
great
interest
often
written
about
estimates
varied
greatly.
Thus,
we
needs
order
obtain
more
reliable
estimates.
aspects
machine
learning
(AI)
it
mycological
research.
Plant
pathogens
affecting
food
production
systems
on
global
scale,
such,
needed
area,
particularly
disease
detection.
latest
data
High
Throughput
Sequencing
if
still
gaining
new
knowledge
same
rate
before.
A
review
nanotechnology
is
provided
addressed.
Arbuscular
Mycorrhizal
Fungi
addressed
acknowledged.
Fungal
databases
becoming
important,
therefore
provide
major
databases.
Edible
medicinal
huge
medicines,
especially
Asia
prospects
discussed.
Lifestyle
changes
(e.g.,
endophytes,
pathogens,
and/or
saprobes)
also
extremely
trend
special
issue
Diversity.
Journal of Fungi,
Journal Year:
2022,
Volume and Issue:
8(7), P. 737 - 737
Published: July 16, 2022
The
fast
and
continued
progress
of
high-throughput
sequencing
(HTS)
the
drastic
reduction
its
costs
have
boosted
new
unpredictable
developments
in
field
plant
pathology.
cost
whole-genome
sequencing,
which,
until
few
years
ago,
was
prohibitive
for
many
projects,
is
now
so
affordable
that
a
branch,
phylogenomics,
being
developed.
Fungal
taxonomy
deeply
influenced
by
genome
comparison,
too.
It
easier
to
discover
genes
as
potential
targets
an
accurate
diagnosis
or
emerging
pathogens,
notably
those
quarantine
concern.
Similarly,
with
development
metabarcoding
metagenomics
techniques,
it
possible
unravel
complex
diseases
answer
crucial
questions,
such
“What’s
my
soil?”,
good
approximation,
including
fungi,
bacteria,
nematodes,
etc.
technologies
allow
redraw
approach
disease
control
strategies
considering
pathogens
within
their
environment
deciphering
interactions
between
microorganisms
cultivated
crops.
This
kind
analysis
usually
generates
big
data
need
sophisticated
bioinformatic
tools
(machine
learning,
artificial
intelligence)
management.
Herein,
examples
use
research
fungal
diversity
some
are
reported.
Sustainability,
Journal Year:
2023,
Volume and Issue:
15(2), P. 1147 - 1147
Published: Jan. 7, 2023
Long-chain
polyunsaturated
fatty
acids
(LC-PUFAs)
have
multiple
beneficial
effects
on
human
health,
in
particular
docosahexaenoic
acid
(DHA,
22:6,
n-3)
and
eicosapentaenoic
(EPA,
20:5,
n-3).
A
variety
of
microorganisms
has
been
used
for
the
commercial
production
non-animal-source
LC-PUFAs.
The
oomycetes
Pythium
family
are
promising
EPA
producers,
this
work,
optimization
irregulare
growth
using
food
industry
by-products
wastes
as
cheap
sources
nutrients
was
carried
out.
Sugar
cane
molasses
(SCM),
spent
brewery
yeast
(SBY),
cheese
whey
(CW),
expired
orange
juice
(EFJ)
were
tested.
combination
SBY
a
source
nitrogen
EFJ
organic
carbon
resulted
best
outcome
among
other
sustainable
media
ingredients.
new
medium
conducted
through
response
surface
methodology
factors.
results
show
significant
positive
impact
these
factors
biomass
productivity
(p
<
0.005),
with
an
optimized
yield
14.22
g
L−1,
lipid
2.23
concentration
155
mg
L−1.
Mycobiology,
Journal Year:
2025,
Volume and Issue:
53(1), P. 120 - 127
Published: Jan. 2, 2025
An
improved
sporulation
method
for
Pythium
aphanidermatum
on
10%
V8-juice
agar
was
developed
to
generate
substantial
quantities
of
zoospores.
We
conducted
experiments
using
a
4
×
factorial
design
evaluate
the
effects
temperature
(20,
25,
30,
and
35
°C)
incubation
time
(2,
3,
4,
5
days)
zoospore
production
from
isolates
HSv05
KACC
48066.
The
results
indicated
that
30
°C
consistently
yielded
highest
numbers
zoospores
across
all
periods.
Applying
same
(30
periods
other
(CCp03,
CCp04,
CCp05,
HSv10,
40156)
also
resulted
in
higher
regardless
times
compared
with
under
control
condition
(25
2
days).
Further
virulence
tests
isolate
revealed
high
concentrations
(5
102
-
105
zoospores/ml)
induced
severe
rot
symptoms;
however,
low
concentration
zoospores/ml
produced
only
considerably
weak
symptoms
inoculated
potato
tubers.
No
appeared
tubers
0
(uninoculated
control)
or
101
zoospores/ml.
These
findings
suggest
our
can
help
obtain
adequate
various
basic
applied
studies,
including
pathogen
identification,
assessment,
resistance
resource
screening,
strategy
development.
Microbiology Spectrum,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 24, 2025
ABSTRACT
Oomycota
mammalian
pathogens,
including
Pythium
(
P
.)
insidiosum
,
Lagenidium
L
giganteum
f.
caninum
and
Paralagenidium
Para
karlingii
are
increasingly
recognized
as
causes
of
life-threatening
infections
in
dogs,
with
diagnosis
complicated
by
their
clinical
phenotypic
resemblance
to
fungal
pathogens.
Traditional
diagnostic
methods,
such
serology,
histopathology,
culture,
often
lack
sensitivity
specificity,
delaying
appropriate
management.
Here,
we
developed
a
multiplex
PCR
assay
remarkable
sensitivity,
detecting
few
one
DNA
copy
per
reaction
for
P.
Para.
10
copies
L.
.
Validation
on
pure
isolates
from
ATCC
USDA-ARS
other
confirmed
the
assay’s
correctly
identifying
all
three
pathogens
showing
no
cross-reactivity
non-target
isolates.
Interestingly,
revealed
that
45.5%
(40/88)
serum
samples
positive
anti-
antibody
contained
DNA.
Additionally,
among
24
suspected
antibody-positive
samples,
54.2%
(13/24)
tested
DNA,
while
8.3%
(2/24)
By
allowing
simultaneous
detection
differentiation
these
single
reaction,
significantly
reduces
time
resource
requirements.
This
highly
sensitive
tool
holds
promise
enhancing
speed
accuracy
infection
well
species,
humans.
could
enable
prompt
implementation
species-specific
followed
early
intervention,
ultimately
resulting
improved
outcomes.
IMPORTANCE
study
addresses
critical
gap
caused
—Pythium
—in
dogs.
These
misdiagnosed
due
overlapping
features,
require
accurate
treatment.
Current
time-consuming,
prone
inconclusive
results.
The
newly
offers
transformative
solution
enabling
specificity.
not
only
but
also
enhances
pathogen
identification,
paving
way
earlier
intervention
Moreover,
its
potential
application
humans,
underscores
broader
significance
managing
infections.
Environmental DNA,
Journal Year:
2024,
Volume and Issue:
6(2)
Published: March 1, 2024
Abstract
Forests
are
threatened
by
many
natural
stressors
intensified
climate
change
and
anthropogenic
activities,
which
tend
to
increase
their
susceptibility
pests
pathogens.
Consequently,
oomycete‐related
forest
decline
or
dieback
cases
increasing
in
natural,
urban,
agricultural
landscapes.
It
is
this
context
that
Christmas
tree
growers
from
Southern
Québec,
Canada,
experiencing
root
rot
problems,
with
reported
incidences
up
25%.
In
a
previous
study,
seven
Phytophthora
spp.
were
associated
problem,
but
the
overall
diversity
of
oomycetes
has
not
yet
been
investigated.
Hence,
we
use
metabarcoding
approach
provide
an
overview
diversity,
richness,
composition
oomycete
community
fir
plantations
compared
surrounding
forests.
We
showed
P.
cryptogea
cluster,
europaea
sansomeana
,
chlamydospora
cluster
significantly
more
abundant
soils
collected
under
diseased
trees
confirmed
(including
abietivora
)
was
most
frequently
showing
rot‐like
symptoms.
Finally,
report
land
(anthropogenic
activities)
shapes
while
can
act
as
gateway
for
invading
fact,
results
presented
here
suggested
might
already
have
crossed
boundary
other
species
follow,
advocating
importance
improved
surveillance
various
environments.