npj Biofilms and Microbiomes,
Год журнала:
2024,
Номер
10(1)
Опубликована: Июль 28, 2024
Abstract
Alkaline
lakes
are
extreme
environments
inhabited
by
diverse
microbial
extremophiles.
However,
large-scale
distribution
patterns,
environmental
adaptations,
community
assembly,
and
evolutionary
dynamics
of
communities
remain
largely
underexplored.
This
study
investigated
the
characteristics
on
rare
abundant
taxa
in
alkaline
lake
sediments
west
northwest
China.
We
observed
that
varied
significantly
with
geographical
distance,
while
remained
unaffected
regional
differences.
The
assembly
process
was
influenced
dispersal
limitation,
whilst
were
predominantly
driven
heterogeneous
selection.
Network
analysis
indicated
as
core
species
for
interactions
stability.
Rare
exhibited
higher
speciation
transition
rate
than
taxa,
serving
a
genetic
reservoir
potential
candidates
to
become
abundance
highlighting
their
crucial
role
maintaining
diversity.
These
insights
underscore
significant
influence
ecosystem
biodiversity
stability
lakes.
New Phytologist,
Год журнала:
2023,
Номер
239(2), С. 752 - 765
Опубликована: Май 7, 2023
Soil
microbial
inoculants
are
expected
to
boost
crop
productivity
under
climate
change
and
soil
degradation.
However,
the
efficiency
of
native
vs
commercialized
in
soils
with
different
fertility
impacts
on
resident
communities
remain
unclear.
We
investigated
differential
plant
growth
responses
synthetic
community
(SynCom)
commercial
growth-promoting
rhizobacteria
(PGPR).
quantified
colonization
dynamic
niche
structure
emphasize
home-field
advantages
for
inoculants.
A
SynCom
21
bacterial
strains,
originating
from
three
typical
agricultural
soils,
conferred
a
special
advantage
promoting
maize
low-fertility
conditions.
The
root
:
shoot
ratio
fresh
weight
increased
by
78-121%
but
only
23-86%
PGPRs.
This
phenotype
correlated
potential
robust
positive
interactions
community.
Niche
breadth
analysis
revealed
that
inoculation
induced
neutral
disturbance
structure.
even
PGPRs
failed
colonize
natural
soil,
they
decreased
overlap
59.2-62.4%,
exacerbating
competition.
These
results
suggest
microbes
may
serve
as
basis
engineering
microbiomes
support
food
production
widely
distributed
poor
soils.
Abstract
Revealing
the
mechanisms
underlying
soil
microbial
community
assembly
is
a
fundamental
objective
in
molecular
ecology.
However,
despite
increasing
body
of
research
on
overall
mechanisms,
our
understanding
subcommunity
for
different
prokaryotic
and
fungal
taxa
remains
limited.
Here,
soils
were
collected
from
more
than
100
sites
across
southwestern
China.
Based
amplicon
high‐throughput
sequencing
iCAMP
analysis,
we
determined
various
taxa.
The
results
showed
that
dispersal
limitation
homogenous
selection
primary
drivers
this
region.
highly
variable.
For
instance,
contribution
to
Crenarchaeota
was
70%,
but
it
only
around
10%
Actinomycetes,
Gemmatimonadetes
Planctomycetes.
subcommunities
including
with
higher
occurrence
frequencies,
average
relative
abundance
network
degrees,
as
well
wider
niches
tended
be
influenced
by
homogenizing
drift,
less
affected
heterogeneous
limitation.
also
varied
substantially
among
functional
guilds.
Notably,
diazotrophs,
nitrifiers,
saprotrophs
some
pathogens
predominantly
controlled
selection,
while
denitrifiers
mainly
stochastic
processes
such
drift.
These
findings
provide
novel
insights
into
diversity
maintenance
analysis
pipeline
holds
significant
value
future
research.
Proceedings of the National Academy of Sciences,
Год журнала:
2025,
Номер
122(2)
Опубликована: Янв. 9, 2025
Pesticide
application
is
essential
for
stabilizing
agricultural
production.
However,
the
effects
of
increasing
pesticide
diversity
on
soil
microbial
functions
remain
unclear,
particularly
under
varying
nitrogen
(N)
fertilizer
management
practices.
In
this
study,
we
investigated
stochasticity
microbes
and
multitrophic
networks
through
amplicon
sequencing,
assessed
community
related
to
carbon
(C),
N,
phosphorus
(P),
sulfur
(S)
cycling,
characterized
dominant
bacterial
life
history
strategies
via
metagenomics
along
a
gradient
two
N
addition
levels.
Our
findings
show
that
higher
enriches
abundance
specialists
opportunists
capable
degrading
or
resisting
pesticides,
reducing
proportion
generalists
in
absence
addition.
These
shifts
can
complicate
networks.
Under
increased
diversity,
selective
pressure
may
drive
bacteria
streamline
their
average
genome
size
conserve
energy
while
enhancing
C,
P,
S
metabolic
capacities,
thus
accelerating
nutrient
loss.
comparison,
was
found
reduce
niche
differentiation
at
mitigating
impacts
network
complexity
functional
traits
associated
with
ultimately
alleviating
results
reveal
contrasting
different
input
scenarios
emphasize
strategic
mitigate
ecological
use
systems.
Frontiers in Microbiology,
Год журнала:
2025,
Номер
16
Опубликована: Фев. 4, 2025
Introduction
Organic
fertilizer
offers
significant
advantages
for
sustainable
agricultural
development
compared
to
inorganic
fertilizers
and
is
increasingly
becoming
the
predominant
strategy.
Functional
traits
gut
microbiota
of
soil
fauna
are
recognized
as
potential
indicators
environmental
changes.
However,
there
a
dearth
research
examining
correlation
between
functional
intestinal
microorganisms
in
response
organic
fertilizer.
Methods
In
this
study,
we
selected
Entomobrya
proxima
Folsom,
collembolan
species
found
cropland
across
North
China,
our
subject
study.
We
set
treatments
with
no
(CK)
three
different
concentrations
at
1%
(O1),
6%
(O2),
10%
(O3).
Stereomicroscopy
high-throughput
amplicon
sequencing
were
employed
elucidate
through
host
associated
microbial
communities.
Results
The
results
indicated
that
impact
on
collembolans
was
closely
linked
input
concentration.
Specifically,
low
positively
influenced
all
Folsom;
conversely,
higher
exerted
an
overall
detrimental
effect.
For
bacterial
community,
addition
resulted
decrease
abundance,
adversely
affected
α
-diversity,
significantly
altered
structure
community
CK.
effect
concentration
these
parameters.
composition
varied
due
fertilizer,
changes
observed
relative
abundances
six
phyla
genera.
Furthermore,
body
length
foreleg
may
serve
characterizing
proportions
Alcanivorax
Sphingobacterium
community.
Additionally,
assembly
process
strongly
by
amount
added;
led
narrowing
niche
width
believed
contribute
increase
richness.
Discussion
conclusion,
adding
multiple
impacts
fauna,
sizes
related
its
These
findings
provide
insights
conserving
animals
while
maximizing
their
ecological
functions
offer
perspectives
optimizing
management
practices.
Environmental Microbiology,
Год журнала:
2022,
Номер
24(9), С. 4153 - 4166
Опубликована: Май 20, 2022
Summary
Microbial
metacommunities
normally
comprise
generalists
and
specialists.
Uncovering
the
mechanisms
underlying
diversity
patterns
of
these
two
sub‐communities
is
crucial
for
aquatic
biodiversity
maintenance.
However,
little
known
about
ecological
assembly
processes
co‐occurrence
habitat
specialists
across
large
spatial
scales
in
plateau
lake
sediments,
particularly
regarding
their
environmental
adaptations.
Here,
we
investigated
sediment
Tibetan
lakes
role
stability
metacommunity
network.
Our
results
showed
that
exhibited
broader
thresholds
closer
phylogenetic
clustering
than
specialist
counterparts.
In
contrast,
stronger
signals
preferences
compared
with
generalists.
Stochastic
dominated
generalist
(63.2%)
(81.3%)
community
assembly.
Sediment
pH
was
major
factor
mediating
balance
between
stochastic
deterministic
addition,
as
revealed
by
network
analysis,
played
a
greater
maintaining
The
insights
gained
from
this
study
can
be
helpful
to
understand
maintenance
microbial
lakes.
ISME Communications,
Год журнала:
2023,
Номер
3(1)
Опубликована: Фев. 22, 2023
Abstract
Developing
low-cadmium
(Cd)
rice
cultivars
has
emerged
as
a
promising
avenue
for
food
safety
in
Cd-contaminated
farmlands.
The
root-associated
microbiomes
of
have
been
shown
to
enhance
growth
and
alleviate
Cd
stress.
However,
the
microbial
taxon-specific
resistance
mechanisms
underlying
different
accumulation
characteristics
between
remain
largely
unknown.
This
study
compared
low-Cd
cultivar
XS14
hybrid
YY17
with
five
soil
amendments.
results
showed
that
was
characterized
by
more
variable
community
structures
stable
co-occurrence
networks
soil-root
continuum
YY17.
stronger
stochastic
processes
assembly
(~25%)
rhizosphere
than
(~12%)
suggested
may
higher
changes
properties.
Microbial
machine
learning
models
jointly
identified
keystone
indicator
microbiota,
such
Desulfobacteria
Nitrospiraceae
Meanwhile,
genes
involved
sulfur
cycling
nitrogen
were
observed
among
microbiome
these
two
cultivars,
respectively.
Microbiomes
root
diversity
functioning,
significant
enrichment
functional
related
amino
acid
carbohydrate
transport
metabolism,
cycling.
Our
findings
revealed
differences
similarities
communities
associated
well
bacterial
biomarkers
predictive
Cd-accumulation
capacity.
Thus,
we
provide
new
insights
into
recruitment
strategies
under
stress
highlight
utility
offering
clues
enhancing
crop
resilience
stresses
future.
