Resolving ecological drivers of temporal variations of β-diversity across intertidal microbiomes
ISME Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
Resolving
the
ecological
drivers
mediating
diversity
patterns
of
microbial
communities
across
space
and
through
time
is
a
central
issue
in
ecology.
Both
regional
species
pools
local
community
assembly
contribute
to
spatial
turnover
biodiversity.
In
this
study,
we
extended
concept
pool
temporal,
investigated
seasonal
dynamics
intertidal
microbiomes
four
domains/kingdoms
(bacteria,
archaea,
fungi,
protists).
The
results
showed
that
variations
β-diversity
were
primarily
governed
by
processes
rather
than
temporal
pools.
Different
structured
different
processes,
with
homogeneous
selection
as
major
process
for
all
them.
Additionally,
bacteria
fungi
critically
shaped
drift,
protists
drift
dispersal.
Among
various
factors,
temperature
was
important
shaping
β-diversity.
fluctuation
strongly
associated
protists,
resulting
high
composition.
This
study
demonstrated
dynamic
β-variations
microbiomes,
expanding
our
understanding
from
Язык: Английский
Seasonal Change in Microbial Diversity: Bile Microbiota and Antibiotics Resistance in Patients with Bilio-Pancreatic Tumors: A Retrospective Monocentric Study (2010–2020)
Antibiotics,
Год журнала:
2025,
Номер
14(3), С. 283 - 283
Опубликована: Март 9, 2025
Background:
Bilio-pancreatic
tumors
are
a
severe
form
of
cancer
with
high
rate
associated
mortality.
These
patients
showed
the
presence
bacteria
such
as
Escherichia
coli
and
Pseudomonas
spp.
in
bile-pancreatic
tract.
Therefore,
efficient
antibiotic
therapy
is
essential
to
reduce
bacterial
resistance
adverse
events
patients.
Recent
studies
on
seasonality
infectious
diseases
may
aid
developing
effective
preventive
measures.
This
study
examines
seasonal
impact
bile
microbiota
composition
its
microorganisms
hepato-pancreatic-biliary
cancer.
Methods:
We
retrospectively
evaluated
effect
seasonally
from
149
strains
isolated
by
90
Italian
positive
culture
samples
collected
through
endoscopic
retrograde
cholangiopancreatography
between
2010
2020.
Results:
Across
all
seasons,
most
frequently
found
were
E.
coli,
spp.,
Enterococcus
Regarding
resistance,
highest
3GC,
fluoroquinolones,
aminoglycosides,
fosfomycin,
piperacillin-tazobactam
summer
lowest
spring,
except
for
carbapenems
colistin.
Conclusions:
Antibiotic
has
negative
effects
who
rely
antibiotics
prevent
treat
infections.
Knowing
whether
fungal
changes
seasons
key
information
define
adequate
more
therapy.
Язык: Английский
The hidden life ofXylella: Mining the NCBI Sequence Read Archive reveals potential new species, host plants and infected areas for this elusive bacterial plant pathogen
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 20, 2025
ABSTRACT
New
crop
disease
outbreaks
can
occur
when
phytopathogenic
bacterial
pathogens
acquire
new
traits,
switch
to
a
host
plant
or
are
introduced
into
geographic
areas.
Therefore,
the
rapid
detection
of
pathogen
in
environment
and/or
is
essential
mitigate
outbreaks.
However,
bacteria
with
wide
range,
many
asymptomatic
hosts
and
slow
symptom
development
sometimes
remain
unnoticed
for
years.
This
case
vector-borne
xylem-inhabiting
Xylella
fastidiosa
known
infect
hundreds
species
worldwide
its
sister
X.
taiwanensis
,
currently
thought
be
restricted
Taiwan.
To
investigate
whether
two
already
present
other
parts
world,
potentially
unrecognised
species,
we
performed
an
in-depth
data
mining
raw
sequence
available
NCBI
Sequence
Read
Archive.
led
identification
62
datasets
from
diverse
insect
samples
around
world.
Furthermore,
nine
draft
one
circular
genome
could
assembled
these
datasets.
Our
results
reveal
several
potential
plants
previously
unrecognized
infected
areas
Americas,
Africa
southeast
Asia.
Moreover,
newly-assembled
genomes
represent
strains
both
as
well
additional
infecting
wild
rice.
Taken
together,
our
work
extends
knowledge
on
genetic
diversity,
range
global
distribution
genus
orient
surveillance
programs
towards
regions
plants.
Язык: Английский
Dual-mycorrhizal colonization is determined by plant age and host identity in two species of Populus
Research Square (Research Square),
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 29, 2025
Abstract
Plants
have
evolved
symbioses
with
mycorrhizal
and
endophytic
fungi
that
are
essential
for
their
growth
survival.
While
most
plants
associate
a
single
guild
of
fungi,
select
group
termed
“dual-mycorrhizal
plants”
both
arbuscular
ectomycorrhizal
fungi.
Although
shift
from
to
colonization
plant
development
has
been
demonstrated
on
other
dual-mycorrhizal
hosts,
it
is
not
known
how
shifts
age
in
Populus
species.
We
performed
an
in
planta
mycorrhization
experiment
test
the
occurrence
switching
response
host-specific
patterns
fungal
two
species
(
P.
tremuloides
P.
trichocarpa).
found
only
trichocarpa
displayed
colonization,
while
associated
but
On
trichocarpa,
guilds
increased
abundance
age,
root
decreased.
Many
early-colonizing
we
documented
strong
saprotrophic
capabilities,
which
may
be
important
trait
fast
colonization.
Dark
septate
endophytes
were
more
abundant
than
either
likely
functionally
members
community.
Our
findings
represent
novel
pattern
illustrate
vary
association
results
also
stress
importance
“third
guild”
symbionts
–
dark
plants.
Язык: Английский
Pseudomonas fluorescens Inoculation Enhances Salix matsudana Growth by Modifying Phyllosphere Microbiomes, Surpassing Nitrogen Fertilization
Plant Cell & Environment,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 19, 2024
ABSTRACT
The
enhancement
of
plant
growth
by
soil
fertilization
and
microbial
inoculation
involves
different
mechanisms,
particularly
altering
the
phyllosphere
microbiome.
This
study
investigated
how
nitrogen
(N)
fertilization,
Pseudomonas
fluorescens
strain
R124
their
combined
effects
influence
different‐aged
Salix
matsudana
cuttings
modulating
N
dynamics
within
Results
showed
that
P.
was
significantly
more
effective
than
alone,
enhancing
biomass,
nutrient
uptake,
content
root
development
90.51%,
18.18%,
72.74%
126.20%,
respectively.
Crucially,
notably
shifted
beta‐diversity
community,
with
K‐strategy
fungi
fixation
subsequent
growth.
Cuttings
from
middle‐aged
forests
displayed
robust
those
young‐aged,
associated
a
varied
impact
on
fungi,
increasing
relative
abundance
Myriangiales
in
young
(76.37%)
Capnodiales
(42.37%),
which
improve
stability
health.
These
findings
highlight
effectiveness
over
promoting
provide
valuable
insights
for
sustainable
management
willow
plantations
at
stages
development.
Язык: Английский
Changes in the phyllosphere and rhizosphere of a cloud forest tree fern along an elevation gradient
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 15, 2024
Abstract
The
diversity
of
plant-associated
microbial
communities
is
shaped
by
both
host
factors
and
the
environment.
Natural
environmental
gradients,
specifically
elevational
ones,
can
serve
as
study
systems
to
understand
community
ecosystem
responses
changes,
however
relationship
between
elevation
not
completely
understood,
especially
in
non-model
such
wild
plants.
In
this
paper
we
explored
role
shaping
structure
rhizosphere
phyllosphere
cloud
forest
tree
fern
Cyathea
fulva.
Samples
phyllosphere,
soil
were
collected
from
15
individual
ferns
across
five
plots
along
an
gradient
ranging
1978
2210
meters
above
sea
level.
Physicochemical
data
collected,
with
all
plots.
Using
16S
rRNA
ITS1
amplicon
sequencing,
tested
for
differences
composition
bacterial
fungal
their
potential
abiotic
drivers.
We
found
that
alpha
decreased
rhizosphere,
but
fungi
pattern
was
only
rhizosphere.
also
observed
significant
changes
Our
results
suggest
a
close
overall
associated
ferns.
envision
information
will
help
further
dynamics
microbiota
plants,
contributing
conservation
necessary
interactions
plants
ecosystems
wellbeing.
Язык: Английский
Composition, Seasonal Dynamics and Metabolic Potential of the Rhizosphere Microbiome Associated with Wild White Poplar
BioTech,
Год журнала:
2024,
Номер
13(4), С. 52 - 52
Опубликована: Дек. 1, 2024
The
white
poplar
(Populus
alba)
is
a
dioecious
woody
plant
with
significant
potential
for
the
phytoremediation
of
soils.
To
realize
this
potential,
it
necessary
to
utilize
growth-promoting
microorganisms.
One
source
such
beneficial
microorganisms
rhizosphere
community
wild-growing
trees.
However,
structure,
dynamics,
and
metabolism
remain
poorly
understood.
ascertain
seasonal
species
diversity,
metabolic
we
sequenced
16S
rRNA
genes
in
metagenomes
derived
from
165
soil
samples
collected
spring
autumn
root
surfaces
102
trees
situated
disparate
geographical
locations.
three
most
prevalent
phyla
across
all
are
Proteobacteria,
Actinobacteriota,
Acidobacteriota.
At
order
level,
orders
Sphingomonadales
Rhizobiales.
Accordingly,
families
Sphingomonadaceae
Rhizobiaceae
were
identified
as
dominant.
rhizospheric
microbiome
exhibited
substantial
inter-seasonal
variation.
Six
families,
including
Caulobacteraceae,
Xanthomonadaceae,
Chitinophagaceae,
Chthoniobacteraceae,
Sphingomonadaceae,
Rhizobiaceae,
alterations
(spring-to-autumn)
locations
under
study.
Members
family,
which
includes
nitrogen-fixing
bacteria,
can
provide
plant-available
forms
nitrogen
nitrate
ammonium.
may
facilitate
conversion
inorganic
sulfur
into
sulfur-containing
amino
acids,
cysteine
methionine,
that
bioavailable
plants.
Furthermore,
capable
synthesizing
organic
acids
(including
Krebs
cycle
acids),
some
lipids
sugars.
Consequently,
stimulate
growth
by
providing
readily
available
sulfur,
well
building
blocks
synthesis
proteins,
nucleic
other
macromolecules.
Many
these
pathways,
fixation,
subjected
changes.
Язык: Английский