Frontiers in Microbiology,
Journal Year:
2019,
Volume and Issue:
10
Published: March 7, 2019
Fusarium
graminearum
is
one
of
the
causal
agents
head
blight
and
produces
trichothecene
mycotoxin,
deoxynivalenol
(DON).
Thioredoxin
reductases
(TRRs)
play
critical
roles
in
recycling
oxidized
thioredoxin.
However,
their
functions
are
not
well
known
plant
pathogenic
fungi.
In
this
study,
we
characterized
a
TRR
orthologue
FgTRR
F.
graminearum.
The
FgTRR-GFP
fusion
protein
localized
to
cytoplasm.
gene
deletion
demonstrated
that
involved
hyphal
growth,
conidiation,
sexual
reproduction,
DON
production,
virulence.
ΔTRR
mutants
also
exhibited
defect
pigmentation,
expression
level
aurofusarin
biosynthesis-related
genes
was
significantly
decreased
mutant.
Furthermore,
were
more
sensitive
oxidative
stress
aggravated
apoptosis-like
cell
death
compared
with
wild
type
strain.
Taken
together,
these
results
indicate
important
development
pathogenicity
Environmental Microbiology Reports,
Journal Year:
2015,
Volume and Issue:
7(5), P. 746 - 764
Published: June 10, 2015
Mycobacteria
are
associated
with
a
number
of
well-characterized
diseases,
yet
we
know
little
about
their
stress
biology
in
natural
ecosystems.
This
study
focuses
on
the
isolation
and
characterization
strains
from
Yellowstone
National
Park
(YNP)
Glacier
(GNP;
USA),
majority
those
identified
were
Mycobacterium
parascrofulaceum,
avium
or
gordonae
(GNP).
Generally,
windows
for
growth
spanned
temperature
range
>
60
°C;
selected
isolates
grew
at
super-saturated
concentrations
hydrophobic
stressors
levels
osmotic
chaotropic
activity
(up
to
13.4
kJ
kg(-1)
)
similar
to,
exceeding,
xerophilic
fungus
Aspergillus
wentii
solvent-tolerant
bacterium
Pseudomonas
putida.
For
example,
mycobacteria
down
0.800
water
indicating
that
they
are,
sole
exception
halophiles,
more
xerotolerant
than
other
bacteria
(or
any
Archaea).
Furthermore,
fatty-acid
composition
cells
grown
over
salt
changed
less
bacteria,
high
level
resilience,
regardless
load.
Cells
M.
smegmatis
resisted
acute,
potentially
lethal
challenges
extremes
pH
(<
1;
13),
saturated
MgCl2
solutions
(5
M;
212
chaotropicity).
Collectively,
these
findings
challenge
paradigm
have
solute
tolerances
inferior
eukaryotes.
Scientific Reports,
Journal Year:
2021,
Volume and Issue:
11(1)
Published: Feb. 17, 2021
Abstract
Keratin
is
important
and
needed
for
the
growth
of
dermatophytes
in
host
tissue.
In
turn,
ability
to
invade
keratinised
tissues
defined
as
a
pivotal
virulence
attribute
this
group
medically
fungi.
The
host–dermatophyte
interaction
accompanied
by
an
adaptation
fungal
metabolism
that
allows
them
adhere
tissue
well
utilize
available
nutrients
necessary
their
survival
growth.
Dermatophyte
infections
pose
significant
epidemiological
clinical
problem.
Trichophyton
rubrum
most
common
anthropophilic
dermatophyte
worldwide
its
typical
infection
areas
include
skin
hands
or
feet
nail
plate.
Microsporum
canis
zoophilic
pathogen,
mostly
known
ringworm
pets,
it
also
infect
humans.
aim
study
was
compare
intracellular
metabolite
content
T.
M.
during
keratin
degradation
using
liquid
chromatography
system
coupled
with
tandem
mass
spectrometer
(LC-MS/MS).
“fingerprints”
revealed
compounds
associated
amino
acids
metabolism,
carbohydrate
related
glycolysis
tricarboxylic
acid
cycle
(TCA),
nucleotide
energy
metabolism.
metabolites
such
kynurenic
acid,
l
-alanine
cysteine
case
riboflavin
were
detected
only
what
may
suggest
these
play
key
role
interactions
metabolomic
results
completed
qPCR
gene
expression
assay.
Our
findings
analysis
growing
culture
media
mimic
could
allow
understanding
processes
involved
pathogenesis
dermatophytes.
Frontiers in Plant Science,
Journal Year:
2016,
Volume and Issue:
7
Published: March 14, 2016
Oasis
farming
system
is
common
in
some
parts
of
the
world,
especially
Arabian
Peninsula
and
several
African
countries.
In
Oman,
majority
farms
follows
a
semi-oasis
system,
which
characterized
by
growing
multiple
crops
mainly
for
home
consumption,
but
also
local
market.
This
study
was
conducted
to
investigate
fungal
diversity
using
pyrosequencing
approach
soils
from
farm
utilizing
(SOF)
cultivated
with
date
palms,
acid
limes
cucumbers.
Fungal
this
compared
that
an
organic
(OR)
cucumbers
tomatoes.
found
be
variable
among
different
same
farm.
The
observed
OTUs,
Chao1
richness
estimates
Shannon
values
indicated
palms
have
higher
soil
(SOF).
addition,
they
level
rhizosphere
grown
OR
SOF.
Ascomycota
most
dominant
phylum
samples
SOF
farms.
Other
phyla
are
Microsporidia,
Chytridiomycota
Basidiomycota.
differential
within
could
related
variation
cultural
practices
employed
each
crop.