bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 20, 2024
ABSTRACT
Increasing
droughts
threaten
soil
microbial
communities
and
the
multiple
functions
they
control
in
agricultural
soils.
These
soils
are
often
fertilized
with
mineral
nutrients,
but
it
remains
unclear
how
this
fertilization
may
alter
capacity
of
multifunctionality
(SMF)
to
be
maintained
under
drought,
plant-soil
interactions
shape
these
effects.
In
study,
we
used
a
mountain
grassland
test
interactive
effect
nutrient
(Nitrogen
Phosphorous)
addition
drought
on
SMF
without
plants
(
Lolium
perenne
)
mesocosm
experiment.
We
calculated
based
8
properties
associated
microbes
store
carbon
(C),
nitrogen
(N)
phosphorous
(P)
their
biomass,
process
elements
through
organic
matter
depolymerization,
mineralization,
nitrification
denitrification
processes.
To
investigate
mechanisms
underlying
response
characterized
changes
stoichiometry
community
composition
using
16S
18S
rRNA
amplicon
sequencing.
Our
results
showed
that
decreased
resistance
when
were
present,
opposite
was
observed
unplanted
soil.
analysis
suggested
due
interaction
plants,
influencing
four
coupled
related
high
SMF:
moisture,
low
C
limitation,
bacterial
diversity
bacteria
gram
positive:gram
negative
ratio.
Altogether,
our
reducing
use
fertilizer
for
plant
production
could
improve
ability
maintain
during
period.
Finally,
study
clearly
further
demonstrated
importance
complex
responses
global
combining
stoichiometric
assessment
represents
powerful
approach
disentangle
mechanisms.
The Plant Journal,
Journal Year:
2023,
Volume and Issue:
117(6), P. 1800 - 1814
Published: Nov. 23, 2023
The
complexity
of
environmental
conditions
encountered
by
plants
in
the
field,
or
nature,
is
gradually
increasing
due
to
anthropogenic
activities
that
promote
global
warming,
climate
change,
and
increased
levels
pollutants.
While
past
it
seemed
sufficient
study
how
acclimate
one
even
two
different
stresses
affecting
them
simultaneously,
complex
developing
on
our
planet
necessitate
a
new
approach
studying
stress
plants:
Acclimation
multiple
occurring
concurrently
consecutively
(termed,
multifactorial
combination
[MFSC]).
In
an
initial
plant
response
MFSC,
conducted
with
Arabidopsis
thaliana
seedlings
subjected
MFSC
six
abiotic
stresses,
was
found
increase
number
simultaneously
impacting
plant,
growth
survival
declined,
if
effects
each
involved
such
minimal
insignificant.
three
recent
studies,
crop
plants,
have
similar
commercial
rice
cultivar,
maize
hybrid,
tomato,
soybean,
causing
significant
reductions
growth,
biomass,
physiological
parameters,
and/or
yield
traits.
As
are
worsening,
as
well
becoming
more
complex,
addressing
its
agriculture
ecosystems
worldwide
becomes
high
priority.
this
review,
we
address
crops,
agriculture,
worldwide,
highlight
potential
avenues
enhance
resilience
crops
MFSC.
Body
size
is
a
key
ecological
trait
of
soil
microorganisms
related
to
their
adaptation
environmental
changes.
In
this
study,
we
reveal
that
the
smaller
show
stronger
community
resistance
than
larger
organisms
in
both
maize
and
rice
soil.
Compared
with
organisms,
have
higher
diversity
broader
niche
breadth
deploy
survival
strategies,
because
which
they
are
less
affected
by
selection
thus
survive
complex
various
kinds
environments.
addition,
strong
correlation
between
ecosystem
functions
reflects
greater
metabolic
flexibility
illustrates
significant
roles
continuously
changing
This
research
highlights
importance
body
maintaining
stability
microbiome
forecasting
agroecosystem
dynamics
under
disturbances.
Natural
man-made
climate
changes,
such
as
warming
excessive
use
fertilizers,
seriously
threaten
services
agricultural
ecosystems
[1,
2].
The
biotic
communities
has
been
proven
be
great
for
multifunctionality
[3].
Recent
studies
revealed
can
species'
life-history
traits
[4].
However,
still
lack
comprehensive
understanding
how
species
traits,
size,
influence
among
distinct
groups
ongoing
determinant
reproductive
capacity
survival,
directly
organism's
changes
[5,
6].
Since
highly
flexible
metabolism
[6],
hypothesize
microorganisms,
underlying
mechanisms
phenomenon
may
result
composite
effect
many
factors.
Current
microbial
ecology
generally
reports
high
more
desirable
scenario
[7].
Thus,
it
tempting
speculate
species-rich
maintain
against
disturbances
effectively.
Furthermore,
tolerance
range
defines
an
niche,
reflecting
community's
sensibility
through
scope
resources
living
conditions
[8].
Microorganisms
narrow
certain
conditions,
whereas
other
taxa
tolerate
ubiquitous
probability
stable
abundance
[9].
Meanwhile,
diverse
sizes
assembly
processes
(deterministic
stochastic
process)
due
differences
adaptability.
Larger
tend
encounter
stringent
growth
while
able
withstand
filtering
[10].
Given
on
critical
biogeochemical
(e.g.,
nutrient
cycling)
[11],
mechanistic
relations
differentially
sized
essential
accurate
predictions
future
stability.
Therefore,
elucidating
from
multiple
angles,
particularly
considering
different
sizes,
crucial
precise
management
resource-efficient
disturbance-resistant
sustainable
agroecosystems.
empirical
evidence
supporting
above
hypotheses
these
views
explanatory
factors
induced
limited
lacks
consensus.
Here,
considered
two
crop
types,
including
(dryland)
(wetland),
investigate
mechanism
ecosystems.
Soils
collected
50
fields
throughout
eastern
southeastern
areas
China
were
incubated
simulate
expected
impacts
addition
(nitrogen,
phosphorus).
Following
incubation,
acquired
bacterial,
fungal,
protistan
information
based
high-throughput
sequencing
16S
18S
ribosomal
RNA
genes
identified
some
basis
literature.
We
also
measured
11
activities,
correspond
carbon,
nitrogen,
phosphorus
cycling.
aimed
address
following
question:
resistant
disturbed
environments?
Does
maintenance
depend
largely
when
cease?
first
determined
24
organism
(12
bacterial
groups,
seven
fungal
five
groups)
previous
study
[12].
These
accounted
at
least
60%
total
sequences
(Figure
S1),
span
was
quite
considerable
S2).
Then,
estimated
significantly
negatively
across
selected
(Figures
1A
S3A,D).
Besides,
disturbance
further
examined
evaluating
widths
nonsynchronization
responses
level
[13].
observed
had
width
S4).
combination,
findings
suggested
arguably
adaptive
organisms.
But
what
makes
perturbations?
Possible
explanations
observation
discussed.
It
Shannon
index
markedly
correlated
1B,C
S3B,C,E,F),
positively
S5).
confirmed
our
hypothesis
wider
lead
resistance.
Smaller
faster
rate,
potentially
increases
rate
mutation
evolution
results
[14].
More
coexisting
provide
buffer
protect
functional
decline
faced
concept
focus
estimating
risk
whole-community
collapse
ever-changing
environments,
environmentally
Soil
generalists
specialists
amplicon
sequence
variants
species–environment
association
pattern
[15].
linear
fitting
model
showed
negative
proportion
1D),
means
often
play
role
ecosystem.
quantified
relative
deterministic
neutral
normalized
stochasticity
ratio
estimate
mechanics
[16].
Our
gradually
decreased
increasing
is,
smallest
(bacteria)
regulated
processes,
ones
(fungi
protists)
influenced
S6).
mostly
consisting
better
cope
mediate
fluctuating
Finally,
functions.
Similar
patterns
all
treatments
1E).
control
group,
R
value,
characterizes
strength
link
1F).
meant
before
disturbances,
weaker
relationship
After
calculated
D
value
(R
treated
group
minus
group)
values.
Interestingly,
found
positive
1G);
shows
improves,
but
decreases
clearly.
An
interesting
interpretation
samples
without
any
treatment
involved
increase
incubation
time.
Under
adverse
become
dormant
themselves
[17].
rapidly
revived
simulated
warmth
addition.
Accordingly,
conclude
potential
dormancy
thereby
ensuring
widespread
persistent
ability
switch
active
modes
helps
so
promote
perturbations
Notably,
response
variables
seems
absent
within
taxonomic
S7,
S8,
S9).
limitations
collecting
data
solely
literature
yield
incomplete
inaccurate
do
not
consider
generic
variables.
important
note
varies
widely
species,
deviation
might
alleviated
much
intergroup
intragroup
[18].
discovery
relationships
diversity,
breadth,
reliable.
Of
course,
keep
mind
caution
must
exercised
inferring
using
unverified
data.
Further
experimental
analytical
necessary
corroborate
gradients.
Overall,
demonstrates
environments
outcompete
ecotypes
(individuals
occupying
niches)
wide
its
Although
required
confirm
main
finding
outside
scenario,
likely
pivotal
factor
affects
could
contribute
in-depth
responsible
ecosystems,
well
contributions
functioning
global
Gehong
Wei,
Shuo
Jiao,
Chunling
Liang,
Jiejun
Qi
conceived
designed
study.
Qi,
Wenyuan
Wu,
Xingyu
Chen,
Mingyu
Li,
Yu
Liu,
Ziheng
Peng,
Shi
Haibo
Pan,
Beibei
Jiai
Yihe
Wang
samples.
Liang
performed
experiments,
analyzed
data,
wrote
manuscript.
Sanfeng
Sen
Du,
revised
All
authors
read
final
manuscript
approved
publication.
work
supported
National
Science
Foundation
Excellent
Young
Scholars
(Grant
No.:
42122050),
42077222),
Fundamental
Research
Funds
Central
Universities
Joint
Fund
U21A2029).
declare
no
conflict
interest.
deposited
Genome
Sequence
Archive
(Genomics,
Proteomics
&
Bioinformatics
2017)
BIG
Data
Center
(Nucleic
Acids
2018),
Beijing
Institute
Genomics
(BIG),
Chinese
Academy
Sciences,
accession
number
PRJCA010837
set
PRJCA010862
set,
publicly
accessible
at:
http://bigd.big.ac.cn/gsa.
scripts
used
saved
GitHub
https://github.com/ChunlingLiang/Body-size.
Supplementary
Materials
(methods,
figures,
graphical
abstract,
slides,
videos,
translated
version,
updated
materials)
online
DOI
or
iMeta
http://www.imeta.science/.
Figure
S1:
Selected
groups.
S2:
Taxa
species.
S3:
Relationships
resistance,
index,
soils.
S4:
Resistance
S5:
S6:
Effects
processes.
S7:
S8:
S9:
generalists,
specialists,
Please
note:
publisher
content
functionality
supplied
authors.
Any
queries
(other
missing
content)
should
directed
corresponding
author
article.
Plants,
Journal Year:
2025,
Volume and Issue:
14(1), P. 98 - 98
Published: Jan. 1, 2025
As
sustainable
forest
management
gains
increasing
attention,
comprehending
the
impact
of
stand
density
on
soil
properties
and
microbial
communities
is
crucial
for
optimizing
ecosystem
functions.
This
study
employed
high-throughput
sequencing
in
conjunction
with
physicochemical
analysis
to
assess
effects
community
characteristics
Chinese
fir
plantations,
aiming
elucidate
influence
regulation
services.
Our
results
suggested
that
changes
microenvironmental
conditions
were
key
drivers
diversity.
Total
carbon
(TC),
soluble
nitrogen
(SN),
light
fraction
organic
matter
decreased
density,
while
total
potassium
(TK)
available
phosphorus
(AP)
concentrations
increased.
The
plot
a
900
trees
ha−1
exhibited
highest
bacterial
diversity,
contrast
1500
ha−1,
which
showed
lowest.
dominant
taxa
similar
across
different
retention
densities,
Acidobacteria,
Proteobacteria,
Chloroflexi
being
predominant
phyla
Ascomycota
Basidiomycota
main
fungal
groups.
Significant
positive
correlations
observed
between
structures
environmental
factors,
particularly
respect
content.
present
demonstrated
reduced
densities
modulated
nutrient
content
enhanced
thereby
contributing
more
complex
stable
structure.
These
insights
provide
scientific
foundation
supporting
development
ecosystems.
Frontiers in Microbiology,
Journal Year:
2025,
Volume and Issue:
15
Published: Jan. 9, 2025
The
northwest
Arabian
Gulf
encounters
significant
anthropogenic
pressures,
including
nutrient
enrichment
from
coastal
development
and
effluent
discharge.
This
study
presents
the
first
shotgun
metagenomics-based
characterization
of
microbial
communities
in
Kuwaiti
waters
Gulf,
focusing
on
Kuwait's
Marine
Protected
Area
(MPA)
Sulaibikhat
Bay,
a
vital
nursery
ground
for
commercially
important
fish.
Analysis
revealed
significantly
higher
diversity
within
MPA
compared
to
adjacent
waters,
with
Rhodobacteraceae
(27.8%)
Flavobacteriaceae
(15.3%)
being
dominant.
Elevated
inorganic
phosphorus,
nitrogen,
salinity
were
key
factors
driving
this
diversity.
Multivariate
analysis
highlighted
phosphate
as
critical
component
affecting
community
structure,
particularly
families
Microbacteriaceae,
Flavobacteriaceae,
Rhodobacteraceae.
underscores
ecological
importance
MPAs
highlights
impact
other
environmental
stressors
diversity,
emphasizing
need
reduce
influx
mitigate
eutrophication
enhance
marine
ecosystem
resilience
stressed
environments.