Environmental Microbiology,
Год журнала:
2024,
Номер
26(5)
Опубликована: Май 1, 2024
Abstract
Soil
is
home
to
a
multitude
of
microorganisms
from
all
three
domains
life.
These
organisms
and
their
interactions
are
crucial
in
driving
the
cycling
soil
carbon.
One
key
indicator
this
process
Microbial
Carbon
Use
Efficiency
(CUE),
which
shows
how
microbes
influence
carbon
storage
through
biomass
production.
Although
CUE
varies
among
different
microorganisms,
there
have
been
few
studies
that
directly
examine
biotic
factors
CUE.
such
factor
could
be
body
size,
can
impact
microbial
growth
rates
soil,
thereby
influencing
Despite
this,
evidence
demonstrating
direct
causal
connection
between
biodiversity
still
scarce.
To
address
these
knowledge
gaps,
we
conducted
an
experiment
where
manipulated
size
size‐selective
filtering.
Our
findings
show
manipulating
structure
community
reduce
by
approximately
65%.
When
restricted
maximum
community,
observed
reduction
bacterial
diversity
functional
potential,
turn
lowered
community's
Interestingly,
when
included
large
micro‐eukarya
it
shifted
cycling,
increasing
50%
nitrogen
ratio
about
25%.
metrics
were
able
explain
36%–50%
variation
This
highlights
importance
traits,
trophic
mediating
cycling.
Global Change Biology,
Год журнала:
2022,
Номер
29(6), С. 1501 - 1513
Опубликована: Ноя. 30, 2022
Climate
change
globally
affects
soil
microbial
community
assembly
across
ecosystems.
However,
little
is
known
about
the
impact
of
warming
on
structure
communities
or
underlying
mechanisms
that
shape
composition
in
subtropical
forest
To
address
this
gap,
we
utilized
natural
variation
temperature
via
an
altitudinal
gradient
to
simulate
ecosystem
warming.
After
6
years,
co-occurrence
network
complexity
increased
with
warming,
and
changes
their
taxonomic
were
asynchronous,
likely
due
contrasting
processes.
We
found
while
stochastic
processes
drivers
bacterial
composition,
led
a
shift
from
deterministic
dry
season.
Structural
equation
modelling
highlighted
water
content
positively
influenced
during
season
negatively
wet
These
results
facilitate
our
understanding
response
climate
may
improve
predictions
function
microbes
forests.
Geoderma,
Год журнала:
2022,
Номер
413, С. 115745 - 115745
Опубликована: Фев. 10, 2022
Crop
and
aquatic
animal
co-culture
systems
have
been
used
for
over
1200
years
can
very
efficiently
utilize
nutrients
materials
available
in
agroecology
settings.
These
are
sustainable
forms
of
agriculture,
extensively
practiced
worldwide.
Microorganisms
play
critical
roles
promoting
ecosystem
nutrient
transformations
material
circulations.
However,
the
long-term
effects
this
farming
system
on
soil
health
microbial
community
stability,
addition
to
their
relationships
with
rice
yields,
remain
unclear.
Here,
7-
12-year
experiments
rice-crayfish-turtle
(RCT)
were
conducted
compared
against
monoculture
(RM)
a
suburb
Shanghai,
China.
Increased
RCT
led
higher
contents
organic
carbon
(SOC),
total
nitrogen
(TN),
(Avail_N),
but
less
phosphorus
(TP)
when
same
layers
RM
treatment.
Thus,
generally
had
positive
physiochemical
properties
across
all
layers.
qPCR
analyses
indicated
that
abundance
ratio
fungi
bacteria
(F:B)
soils
than
soils,
suggesting
an
improvement
metabolic
efficiency
sustainability
these
agroecosystems.
High-throughput
sequencing
demonstrated
much
diversity.
Network
analysis
revealed
more
abundant
network
modules
larger
proportion
negative
correlations
7-year
networks.
Overall,
compositional
promoted
increased
stability.
Stochastic
processes
dominated
bacterial
fungal
assembly,
while
random
distributions
evident
networks
communities.
interactions
between
amplicon
sequence
variants
(ASVs)
equivalent
structures
structure
Structural
equation
models
(SEM)
indirect
yields
by
influencing
or
Altogether,
promotion
suitable
environments
communities,
which
could
contribute
cycling
further
increase
crop
production
yields.
results
provide
new
insights
into
co-associations
shifts
fertility
quality
diversity
production,
thereby
helping
inform
ecological
systems.
Proceedings of the National Academy of Sciences,
Год журнала:
2023,
Номер
120(3)
Опубликована: Янв. 10, 2023
Microorganisms
play
essential
roles
in
soil
ecosystem
functioning
and
maintenance,
but
methods
are
currently
lacking
for
quantitative
assessments
of
the
mechanisms
underlying
microbial
diversity
patterns
observed
across
disparate
systems
scales.
Here
we
established
a
model
to
incorporate
pH
into
metabolic
theory
capture
explain
some
unexplained
variation
relationship
between
temperature
bacterial
diversity.
We
then
tested
validated
our
newly
developed
models
multiple
scales
ecological
organization.
At
species
level,
modeled
diversification
rate
bacterium
Pseudomonas
fluorescens
evolving
under
laboratory
media
gradients
varying
pH.
community
communities
paddy
soils
continental
scale,
which
included
natural
temperature.
Last,
further
extended
at
global
scale
by
integrating
meta-analysis
comprising
870
collected
worldwide
from
wide
range
ecosystems.
Our
results
were
robust
consistently
predicting
distributional
gradients—with
explaining
7
66%
diversity,
depending
on
system
complexity.
Together,
study
represents
nexus
point
integration
with
potential
be
used
distinct
spatiotemporal
By
mechanistically
representing
theory,
enhances
capacity
predict
current
or
future
climate
change
scenarios.
Global Change Biology,
Год журнала:
2023,
Номер
29(19), С. 5706 - 5719
Опубликована: Июль 14, 2023
Soil
eukaryotes
play
a
crucial
role
in
maintaining
ecosystem
functions
and
services,
yet
the
factors
driving
their
diversity
distribution
remain
poorly
understood.
While
many
studies
focus
on
some
eukaryotic
groups
(mostly
fungi),
they
are
limited
spatial
scale.
Here,
we
analyzed
an
unprecedented
amount
of
observational
data
soil
eukaryomes
at
continental
scale
(787
sites
across
Europe)
to
gain
further
insights
into
impact
wide
range
environmental
conditions
(climatic
edaphic)
community
composition
structure.
We
found
that
fungi,
protists,
rotifers,
tardigrades,
nematodes,
arthropods,
annelids
was
predominantly
shaped
by
type
(annual
permanent
croplands,
managed
unmanaged
grasslands,
coniferous
broadleaved
woodlands),
higher
observed
croplands
than
less
intensively
systems,
such
as
woodlands.
Also
more
specialized
eukaryotes,
while
between
homogeneous
compared
other
ecosystems.
The
high
proportion
overlapping
taxa
ecosystems
also
indicates
DNA
has
accumulated
from
previous
land
uses,
hence
mimicking
transformations
occurring
Europe
last
decades.
This
strong
ecosystem-type
influence
linked
properties,
particularly,
pH
richness
annelids,
plant-available
phosphorus
drove
nematodes.
Furthermore,
organic
carbon
total
nitrogen
ratio
crucially
explained
possibly
decades
agricultural
inputs.
Our
results
highlighted
importance
long-term
variables
rather
measured
time
sampling
shaping
communities,
which
reinforces
need
include
those
addition
future
monitoring
programs
conservation
efforts.