Land Degradation and Development,
Год журнала:
2022,
Номер
34(7), С. 1926 - 1940
Опубликована: Дек. 17, 2022
Abstract
Mulching
regimes
have
a
promoted
impact
on
the
soil
hydrothermal
environments
and
crop
productions.
However,
time‐dependent
variations
in
root‐associated
microbial
communities
under
distinct
mulching
Loess
Plateau
not
been
thoroughly
explored.
Here,
we
investigated
regulatory
impacts
of
plastic
film
(FM)
ridge‐furrow
system
(RF)
community
compositions,
diversities,
ecological
networks
compartments
(e.g.,
root,
rhizosphere,
bulk
soil)
at
jointing
flowering
periods
proso
millet,
compared
these
two
to
no
(NM).
improved
rhizosphere
quality
period,
whereas
reduced
them
period.
Bacterial
structure
composition
three
were
significantly
influenced
by
growth
regimes.
Furthermore,
effectively
increased
alpha
diversities
root
Soil
temperature
total
N
most
essential
variables
affecting
structure,
respectively.
With
development
network
complexity
stability
increased,
abundance
different
modules
regulated
Proteobacteria
Acidobacteriota
keystone
species
whereas,
only
species.
In
addition,
FM
regime
interaction
taxa
than
those
non‐mulching
both
periods.
These
results
highlighted
that
observed
be
recommended
selection
for
improving
quality,
regulating
bacterial
diversity
stabilizing
interaction,
thereby
providing
guidance
choosing
ideal
cultivation
techniques
from
perspective
ecology
Plateau.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(39), С. 14770 - 14786
Опубликована: Сен. 11, 2023
Vanadium(V)
is
a
highly
toxic
multivalent,
redox-sensitive
element.
It
widely
distributed
in
the
environment
and
employed
various
industrial
applications.
Interactions
between
V
(micro)organisms
have
recently
garnered
considerable
attention.
This
Review
discusses
biogeochemical
cycling
of
its
corresponding
bioremediation
strategies.
Anthropogenic
activities
resulted
elevated
environmental
concentrations
compared
to
natural
emissions.
The
global
distributions
atmosphere,
soils,
water
bodies,
sediments
are
outlined
here,
with
notable
prevalence
Europe.
Soluble
V(V)
predominantly
exists
exhibits
high
mobility
chemical
reactivity.
transport
within
media
across
food
chains
also
discussed.
Microbially
mediated
transformation
evaluated
shed
light
on
primary
mechanisms
underlying
microbial
reduction,
namely
electron
transfer
enzymatic
catalysis.
Additionally,
this
highlights
strategies
by
exploring
their
geochemical
influences
technical
implementation
methods.
identified
knowledge
gaps
include
particulate
speciation
associated
behaviors
as
well
processes
marine
environments.
Finally,
challenges
for
future
research
reported,
including
screening
hyperaccumulators
V(V)-reducing
microbes
field
tests
approaches.
Environmental Science & Technology,
Год журнала:
2023,
Номер
57(4), С. 1807 - 1818
Опубликована: Янв. 4, 2023
Vanadium(V)
is
a
redox-sensitive
heavy-metal
contaminant
whose
environmental
mobility
strongly
influenced
by
pyrrhotite,
widely
distributed
iron
sulfide
mineral.
However,
relatively
little
known
about
microbially
mediated
vanadate
[V(V)]
reduction
characteristics
driven
pyrrhotite
and
concomitant
mineral
dynamics
in
this
process.
This
study
demonstrated
efficient
V(V)
bioreduction
during
210
d
of
operation,
with
lifespan
10
times
longer
than
abiotic
control,
especially
stable
period
when
the
removal
efficiency
reached
44.1
±
13.8%.
Pyrrhotite
oxidation
coupled
to
could
be
achieved
an
enriched
single
autotroph
(e.g.,
Thiobacillus
Thermomonas)
independently.
Autotrophs
Sulfurifustis)
gained
energy
from
synthesize
organic
intermediates,
which
were
utilized
heterotrophic
reducing
bacteria
such
as
Anaerolinea,
Bacillus,
Pseudomonas
sustain
reduction.
was
reduced
insoluble
tetravalent
V,
while
mainly
produced
Fe(III)
SO42–.
Secondary
minerals
including
mackinawite
(FeS)
greigite
(Fe3S4)
synchronously,
resulting
further
transformations
SO42–
sulfate
Desulfatiglans)
magnetotactic
Nitrospira).
provides
new
insights
into
biogeochemical
behavior
V
under
effects
reveals
previously
overlooked
mineralogical
bioprocesses
Fe(II)-bearing
minerals.
ACS Nano,
Год журнала:
2024,
Номер
18(3), С. 2464 - 2474
Опубликована: Янв. 10, 2024
Abundant
smelting
ash
is
discharged
during
pyrometallurgical
vanadium
(V)
production.
However,
its
associated
V
speciation
and
resultant
ecological
impact
have
remained
elusive.
In
this
study,
in
influence
on
the
metabolism
of
soil
microorganisms
were
investigated.
Smelting
ashes
from
smelters
contained
abundant
(19.6-115.9
mg/g).
V(V)
was
dominant
species
for
soluble
V,
while
solid
primarily
existed
bioavailable
forms.
Previously
unrevealed
nanoparticles
(V-NPs)
prevalently
detected,
with
a
peak
concentration
1.3
×
10
Journal of Geophysical Research Biogeosciences,
Год журнала:
2024,
Номер
129(7)
Опубликована: Июль 1, 2024
Abstract
In
the
soils
of
vanadium
(V)
smelters,
a
diverse
array
microorganisms
relies
on
metabolic
activities
for
survival
amid
stress.
However,
characteristics
and
functions
soil
microbiomes
in
V
mining
environments
remain
unexplored
continental
scale.
This
study
thoroughly
investigates
microbial
diversity,
community
assembly,
functional
potential
microbiome
across
90
smelters
China.
Alpha
diversity
decreases
significantly
along
gradient,
with
emerging
as
primary
factor
influencing
structure,
followed
by
other
environmental,
climatic,
geographic
factors.
The
null
model
reveals
that
induces
homogeneous
selection,
shaping
co‐occurrence
patterns
leading
to
increased
number
positive
associations,
particularly
keystone
genera
such
f_Gemmatimonadaceae
,
Nocardioides
Micromonospora
Rubrobacter
under
higher
concentrations
(>559.6
mg/kg).
Moreover,
metagenomic
analysis
yields
67
metagenome‐assembled
genomes,
unraveling
pathways
taxa
their
likely
involvement
V(V)
reduction
process.
Nitrate
nitrite
reductase
(
nirK
narG
),
mtrABC
are
found
be
taxonomically
affiliated
.
sp,
FEN‐1250
etc.
Additionally,
reverse
citric
acid
cycle
(rTCA)
serves
carbon
fixation
pathway,
synthesizing
alternative
energy
putative
reducers,
highlighting
potentially
synergistic
relationship
between
autotrophic
heterotrophic
processes
supports
survival.
Our
findings
comprehensively
uncover
driving
forces
behind
variation
stress,
revealing
robust
strategies
possibly
employed
indigenous
mitigate
impact
V.
These
insights
hold
applications
bioremediation.
Chemical Engineering Journal,
Год журнала:
2023,
Номер
466, С. 143172 - 143172
Опубликована: Апрель 25, 2023
Nitrogen
pollution
in
wastewater
has
been
considered
a
worldwide
risk
to
ecosystems.
Bioelectrochemical
technologies
have
developed
recently
remove
nitrogen.
In
addition
nitrogen,
microplastics,
as
emergency
pollutants
wastewater,
could
potentially
affect
nitrogen
removal
efficiency
due
their
toxic
effects
on
the
activity
of
microorganisms.
This
study
explored
how
microplastics
would
influence
bioelectrochemical
process.
It
was
found
that
declined
following
microplastic
during
long-term
exposure
experiment.
With
biofilm
viability
and
content
EPS
significantly.
Microbial
community
structure
shifted
significantly
microplastics.
As
most
abundant
genera
denitrifier,
Thiobacillus
shrank
largely
with
Moreover,
reduction
total
abundance
denitrification
bacteria
denitrification-related
functional
genes
also
observed.
The
results
unveil
mechanisms
inhibit
offer
insights
into
application
from
rich
microplastic.
Agricultural Water Management,
Год журнала:
2024,
Номер
295, С. 108781 - 108781
Опубликована: Март 21, 2024
Rehydration
is
a
primary
adaptation
strategy
for
alleviating
the
detrimental
effects
of
drought
on
crop
growth.
However,
rehydration
microbial
communities
in
various
compartments
under
conditions
remain
poorly
understood.
Herein,
we
explored
response
patterns
bacterial
and
fungal
community
composition,
diversity,
ecological
network,
assembly
process
bulk
soil
rhizosphere
broomcorn
millet
farmland
at
5,
10,
20,
30
days
after
during
conditions.
Compared
to
drought,
significantly
decreased
organic
matter
(OM),
total
nitrogen
(TN),
available
potassium
(AK),
phosphorus
(AP),
nitrate
(NO3--N),
ammonium
(NH4+-N)
contents
rhizosphere,
but
had
no
obvious
influences
OM
TN
four
sampling
days.
In
field,
Firmicutes
Actinobacteria
were
enriched
condition,
Proteobacteria
Bacteroidetes
regime.
relative
abundances
Eurotiomycetes,
Dothideomycetes,
Mortierellomycetes,
Leotiomycetes
enhanced,
Sordariomycetes
was
reduced
5th
10th
rehydration.
increased
observed
ASVs
Shannon
index
varying
degrees,
little
effect
soil.
Null-model
analysis
indicated
that
deceased
stochastic
soil,
whereas
influence
deterministic
rhizosphere.
More
importantly,
properties
greater
impact
than
Network
revealed
improved
interconnected
taxa
interactions
network
compared
drought.
This
work
provides
theoretical
foundation
elucidating
role
regime
governing
services
microbiome
