Environmental Science & Technology,
Год журнала:
2021,
Номер
55(13), С. 8709 - 8720
Опубликована: Июнь 17, 2021
Amoebas
are
protists
that
widespread
in
water
and
soil
environments.
Some
species
pathogenic,
inducing
potentially
lethal
effects
on
humans,
making
them
a
major
threat
to
public
health.
Nonpathogenic
amoebas
also
of
concern
because
they
have
the
potential
carry
mini-microbiome
bacteria,
either
transiently
or
via
more
long-term
stable
transport.
Due
their
resistance
disinfection
processes,
physical
removal
amoeba
by
filtration
is
necessary
prevent
propagation
throughout
drinking
distribution
networks
occurrence
tap
water.
In
this
study,
model
Dictyostelium
discoideum
was
used
study
transport
retention
behavior
spores
porous
media.
The
key
factors
affecting
fully
saturated
media
were
comprehensively
evaluated,
with
experiments
performed
using
quartz
crystal
microbalance
dissipation
monitoring
(QCM-D)
parallel
plate
chamber
system.
ionic
strength
(IS)
deposition
found
be
contrast
predicted
Derjaguin–Landau–Verwey–Overbeek
(DLVO)
theory
observed
under
lower-IS
conditions.
presence
extracellular
polymeric
substances
(EPS)
main
contributor
behavior.
Overall,
these
results
provide
plausible
evidence
for
Furthermore,
one
first
studies
examine
mechanisms
fate
media,
providing
significant
baseline
future
research
minimize
safety
risk
presented
systems.
The ISME Journal,
Год журнала:
2021,
Номер
15(11), С. 3181 - 3194
Опубликована: Май 12, 2021
Abstract
Host
genetics
has
recently
been
shown
to
be
a
driver
of
plant
microbiome
composition.
However,
identifying
the
underlying
genetic
loci
controlling
microbial
selection
remains
challenging.
Genome-wide
association
studies
(GWAS)
represent
potentially
powerful,
unbiased
method
identify
microbes
sensitive
host
genotype
and
connect
them
with
that
influence
their
colonization.
Here,
we
conducted
population-level
analysis
rhizospheres
200
sorghum
genotypes.
Using
16S
rRNA
amplicon
sequencing,
rhizosphere-associated
bacteria
exhibiting
heritable
associations
genotype,
significant
overlap
between
these
lineages
taxa
identified
in
maize.
Furthermore,
demonstrate
GWAS
can
correlate
abundance
specific
subsets
rhizosphere
microbiome.
Finally,
results
used
predict
structure
for
an
independent
panel
genotypes
based
solely
on
knowledge
genotypic
information.
Applied and Environmental Microbiology,
Год журнала:
2020,
Номер
87(2)
Опубликована: Ноя. 3, 2020
Amoebae
are
protists
that
have
complicated
relationships
with
bacteria,
covering
the
whole
spectrum
of
symbiosis.
Amoeba-bacterium
interactions
contribute
to
study
predation,
symbiosis,
pathogenesis,
and
human
health.
Given
complexity
their
relationships,
it
is
necessary
understand
ecology
evolution
interactions.
In
this
paper,
we
provide
an
updated
review
current
understanding
amoeba-bacterium
We
start
by
discussing
diversity
amoebae
bacterial
partners.
Grazing
of
amoebae
on
microorganisms
represents
one
the
oldest
predator-prey
dynamic
relationships
in
nature.
It
a
genetic
"melting
pot"
for
an
ancient
and
continuous
multi-directional
inter-
intra-kingdom
horizontal
gene
transfer
between
its
preys,
intracellular
microbial
residents,
endosymbionts,
giant
viruses,
which
has
shaped
evolution,
selection,
adaptation
microbes
that
evade
degradation
by
predatory
amoeba.
Unicellular
phagocytic
are
thought
to
be
ancestors
macrophages
with
highly
conserved
eukaryotic
processes.
Selection
evolution
within
amoeba
through
their
target
processes
have
facilitated
expansion
host
range
mammals,
causing
various
infectious
diseases.
PeerJ,
Год журнала:
2020,
Номер
8, С. e9151 - e9151
Опубликована: Май 22, 2020
Here
we
give
names
to
three
new
species
of
Paraburkholderia
that
can
remain
in
symbiosis
indefinitely
the
spores
a
soil
dwelling
eukaryote,
Dictyostelium
discoideum.
The
P.
agricolaris
sp.
nov.,
hayleyella
and
bonniea
nov.
are
widespread
across
eastern
USA
were
isolated
as
internal
symbionts
wild-collected
D.
We
describe
these
using
several
approaches.
Evidence
they
each
distinct
comes
from
their
phylogenetic
position,
average
nucleotide
identity,
genome-genome
distance,
carbon
usage,
reduced
length,
cooler
optimal
growth
temperature,
metabolic
tests,
previously
described
ability
invade
discoideum
amoebae
form
symbiotic
relationship.
All
facilitate
prolonged
carriage
food
bacteria
by
discoideum,
though
themselves
not
food.
Further
studies
interactions
with
should
be
fruitful
for
understanding
ecology
evolution
symbioses.
Environmental Science & Technology,
Год журнала:
2022,
Номер
56(8), С. 4936 - 4949
Опубликована: Март 29, 2022
Nano-
and
microplastics
have
become
a
serious
global
concern,
threatening
our
living
environments.
Previous
studies
shown
that
many
organisms,
including
bacteria,
animals,
plants,
can
be
affected
by
microplastics.
However,
little
is
known
about
one
ecologically
important
group
of
soil
the
protists.
In
this
study,
we
investigated
how
polystyrene
micro-
nanoplastics
interacted
with
amoeba
Dictyostelium
discoideum.
The
results
showed
environmental
concentrations
nano-
could
negatively
affect
amoeba's
fitness
development.
D.
discoideum
ingested
both
through
phagocytosis
but
packed
excreted
them
during
slug
migration,
which
also
promoted
their
biodegradation.
Fourier
transform
infrared
spectroscopy
analyses
revealed
formation
new
oxygen-containing
functional
groups
sign
possible
oxidation
polystyrene.
Also,
microplastic
exposure
disrupted
nutrient
energy
metabolisms
expression
key
genes
(e.g.,
cf45-1,
dcsA,
aprA,
dymB,
gefB)
related
to
morphogenesis
phagocytosis.
conclusion,
show
complex
bilateral
interactions
amoeba,
affecting
each
other's
fate
in
environment.
This
study
provides
insights
into
protists
interact
ecosystem.
Recent
symbioses,
particularly
facultative
ones,
are
well
suited
for
unravelling
the
evolutionary
give
and
take
between
partners.
Here
we
look
at
variation
in
natural
isolates
of
social
amoeba
Dictyostelium
discoideum
their
relationships
with
bacterial
symbionts,
Burkholderia
hayleyella
agricolaris.
Only
about
a
third
field-collected
amoebae
carry
symbiont.
We
cured
cross-infected
hosts
different
symbiont
association
histories
then
compared
host
responses
to
each
type.
Before
curing,
clones
did
not
vary
significantly
overall
fitness,
but
infected
produced
morphologically
multicellular
structures.
After
curing
reinfecting,
fitness
declined.
However,
B.
suffered
fewer
costs
when
reinfected
hayleyella,
indicating
that
they
have
evolved
mechanisms
tolerate
Our
work
suggests
specific
acquired
symbionts;
exploring
host-symbiont
within
species
may
provide
further
insights
into
disease
dynamics.
