Environmental Microbiology,
Год журнала:
2019,
Номер
22(5), С. 1707 - 1719
Опубликована: Окт. 10, 2019
Summary
Diatom
blooms
can
significantly
influence
the
dynamics
of
microbial
communities,
yet
little
is
known
about
interaction
and
assembly
mechanisms
abundant
rare
taxa
during
bloom
process.
Here,
using
16S
rRNA
gene
amplicon
sequencing,
we
investigated
co‐occurrence
patterns
processes
communities
an
early
spring
diatom
in
Xiangshan
bay.
Our
results
showed
that
α‐diversity
indices
subcommunity
(RS)
were
higher
than
those
common
subcommunities.
β‐Diversity
RS
was
highest
among
three
subcommunities,
variation
β‐diversity
subcommunities
mainly
induced
by
species
turnover,
which
also
RS.
The
driven
neutral
processes,
but
roles
might
differ
each
subcommunity.
Co‐occurrence
network
analysis
revealed
operational
taxonomic
units
more
often
located
central
positions
within
network.
Most
modules
specific
to
a
particular
stage,
owing
succession
Skeletonema
costatum
.
Overall,
these
findings
expand
current
understanding
marine
environment
suffering
harmful
algal
disturbance.
Environmental Microbiology,
Год журнала:
2020,
Номер
22(4), С. 1327 - 1340
Опубликована: Фев. 18, 2020
Summary
Despite
the
important
roles
of
soil
microbes,
especially
most
diverse
rare
taxa
in
maintaining
community
diversity
and
multifunctionality,
how
different
climate
regimes
alter
stability
functions
microbial
biosphere
remains
unknown.
We
reciprocally
transplanted
field
soils
across
a
latitudinal
gradient
to
simulate
change
sampled
annually
after
harvesting
maize
over
following
6
years
(from
2005
2011).
By
sequencing
16S
ribosomal
RNA
gene
amplicons,
we
found
that
changing
significantly
altered
composition
dynamics
communities.
A
continuous
succession
abundant
communities
was
observed.
Rare
were
more
stable
under
climatic
regimes,
with
lower
variations
temporal
dynamics,
higher
constancy
diversity.
More
nitrogen
cycling
genes
detected
members
than
members,
including
amoA
,
napA
nifH
nirK
nirS
norB
nrfA
.
Random
forest
analysis
receiver
operating
characteristics
showed
may
act
as
potential
contributors
yield
climatics.
The
study
indicates
taxonomically
functionally
has
increase
functional
redundancy
enhance
ability
counteract
environmental
disturbances.
With
ongoing
global
change,
exploring
process
changes
be
elucidating
ecosystem
multifunctionality
are
mediated
by
Environmental Microbiology,
Год журнала:
2020,
Номер
23(4), С. 1907 - 1924
Опубликована: Сен. 30, 2020
Plants
harbour
highly
diverse
mycobiomes
which
sustain
essential
functions
for
host
health
and
productivity.
However,
ecological
processes
that
govern
the
plant-mycobiome
assembly,
interactions
their
impact
on
ecosystem
remain
poorly
known.
Here
we
characterized
role
community
assembly
of
both
abundant
rare
fungal
taxa
along
soil-plant
continuums
(rhizosphere,
phyllosphere
endosphere)
in
maize-wheat/barley
rotation
system
under
different
fertilization
practices
at
two
contrasting
sites.
Our
results
indicate
mycobiome
is
shaped
predominantly
by
compartment
niche
species
rather
than
environmental
factors.
Moreover,
crop-associated
communities
are
dominated
few
mainly
belonging
to
Sordariomycetes
Dothideomycetes,
while
majority
diversity
within
represented
taxa.
For
plant
compartments,
sub-community
determined
stochastic
processes.
In
contrast,
more
sensitive
selection
governed
deterministic
Furthermore,
our
demonstrate
play
an
important
co-occurrence
network
functioning
like
crop
yield
soil
enzyme
activities.
These
significantly
advance
understanding
highlight
key
sustaining
stability
functions.
The ISME Journal,
Год журнала:
2019,
Номер
13(9), С. 2196 - 2208
Опубликована: Май 3, 2019
Abstract
Although
it
is
widely
recognized
that
cyanobacterial
blooms
have
substantial
influence
on
the
plankton
community
in
general,
their
correlations
with
whole
of
eukaryotic
at
longer
time
scales
remain
largely
unknown.
Here,
we
investigated
temporal
dynamics
communities
two
subtropical
reservoirs
over
a
6-year
period
(2010–2015)
following
one
biomass
cycle—the
bloom
(middle
2010),
cyanobacteria
decrease
(late
2010–early
2011),
non-bloom
(2011–2014),
increase,
and
second
2014–2015).
The
succession
strongly
correlated
this
cycle
was
divided
into
four
periods,
each
had
distinct
characteristics
environments
both
reservoirs.
Integrated
co-occurrence
networks
based
study
revealed
remarkably
high
network
centralities,
OTUs
stronger
exhibited
higher
centralities.
integrated
were
also
modularly
responded
to
different
therefore
cycle.
Moreover,
sub-networks
periods
indicated
patterns
not
constant
but
varied
associating
biomass.
Based
these
long-term
observations,
our
results
reveal
created
niches
between
persistent
bloom,
non-bloom,
increase
cyanobacteria,
associated
patterns.
Our
important
implications
for
understanding
how
complex
aquatic
respond
under
changing
environments.
Ecological Indicators,
Год журнала:
2022,
Номер
136, С. 108695 - 108695
Опубликована: Фев. 21, 2022
Seasonal
variations
of
environmental
factors
generally
result
in
considerable
changes
microbiomes,
yet
we
still
lack
a
clear
understanding
how
microbial
communities
maintain
their
ecological
stability.
Here,
analyze
long-term
(nine
years)
high-throughput
sequencing
dataset
by
network
analysis
to
illustrate
the
stability
varies
among
seasons
lake
ecosystems.
The
results
showed
that
networks
were
distinctly
different
seasons,
and
most
complex
autumn
exhibited
highest
We
found
strong
connecting
structures
microbes
(large
modules)
significantly
(P
<
0.05)
correlated
with
water
temperature
pH,
which
would
negatively
affect
keystone
taxa
destabilize
communities.
more
stable
removal
unstable
networks.
Moreover,
specific
due
filtering
relevant
interspecific
interactions.
These
suggested
seasonal
could
influence
community
via
regulation
taxa.
Thus,
be
used
as
indicators
reflect
findings
improve
our
co-occurrence
patterns
reveal
mechanism
aquatic
Environmental Microbiology,
Год журнала:
2019,
Номер
22(3), С. 832 - 849
Опубликована: Авг. 30, 2019
Summary
Despite
the
essential
functions
of
sedimentary
bacterial
and
fungal
communities
in
biogeochemical
cycling,
little
is
known
about
their
biogeographic
patterns
driving
processes
large
rivers.
Here
we
investigated
assemblies
co‐occurrence
Jinsha
River,
one
largest
rivers
southwestern
China.
The
mainstream
river
was
divided
into
upstream,
midstream
downstream.
results
showed
that
both
differed
significantly
among
three
sections.
For
communities,
composition
variations
all
sites
or
each
section
were
controlled
by
combination
dispersal
limitation
environmental
selection,
dominant
factor.
Compared
with
bacteria,
fungi
had
stronger
limitation.
Co‐occurrence
network
analyses
revealed
higher
connectivity
but
a
lower
proportion
positive
interaction
than
at
sites.
In
particular,
keystone
species
belonging
to
phyla
Proteobacteria
Firmicutes
Ascomycota
Chytridiomycota
may
play
critical
roles
maintaining
community
function.
Together,
these
observations
indicate
have
influence
less
implying
different
assembly
mechanisms
ecological
between
bacteria
The
relationships
between
soil
biodiversity
and
ecosystem
functions
are
an
important
yet
poorly
understood
topic
in
microbial
ecology.
This
study
presents
exploratory
effort
to
gain
predictive
understanding
of
the
factors
driving
diversity
potential
nutrient
cycling
complex
terrestrial
ecosystems.