Journal of Experimental Agriculture International,
Journal Year:
2024,
Volume and Issue:
46(12), P. 833 - 849
Published: Dec. 30, 2024
Carbon-based
nanomaterials
(CBNMs),
including
biochar,
graphene
oxide
(GO),
carbon
nanotubes
(CNTs),
and
fullerenes,
have
emerged
as
innovative
tools
for
sustainable
agriculture,
particularly
in
soil
amendment
applications.
Their
unique
properties,
such
high
surface
area,
chemical
stability,
porosity,
functionalization
potential,
allow
significant
improvements
health,
nutrient
retention,
microbial
activity.
CBNMs
enhance
structure,
water
aeration,
while
also
reducing
the
leaching
of
fertilizers
agrochemicals,
thereby
minimizing
environmental
contamination.
biochar's
role
sequestration
mitigation
greenhouse
gas
emissions
positions
it
a
valuable
tool
climate-smart
agriculture.
Recent
research
highlights
CBNMs'
ability
to
improve
crop
yields,
use
efficiency,
stress
tolerance
under
conditions
drought
salinity.
Challenges
remain
regarding
scalability
their
production,
costs,
potential
toxicity
ecosystems
plants,
well
risks
nanoparticle
into
bodies.
The
long-term
impacts
on
broader
environment
are
still
poorly
understood,
necessitating
further
investigation
interactions
with
different
types
ecosystems.
Integration
emerging
technologies,
precision
agriculture
Internet
Things
(IoT)-based
systems,
presents
opportunities
optimize
application
monitoring.
Adopting
regenerative
practices
could
health
ecosystem
resilience.
Future
directions
should
prioritize
developing
cost-effective
scalable
synthesis
methods,
establishing
regulatory
frameworks
safe
use,
promoting
interdisciplinary
collaborations
address
knowledge
gaps
public
concerns.
As
field
advances,
revolutionize
agricultural
practices,
improving
sustainability
productivity
mitigating
challenges,
contributing
global
food
security
climate
This
review
underscores
promise
emphasizing
need
responsible
innovation
rigorous
ensure
implementation.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(25), P. 11063 - 11073
Published: June 13, 2024
Rhizosphere
iron
plaques
derived
from
Fe-based
nanomaterials
(NMs)
are
a
promising
tool
for
sustainable
agriculture.
However,
the
requirement
flooded
conditions
to
generate
plaque
limits
scope
of
NM
application.
In
this
study,
we
achieved
in
situ
Fenton
oxidation
highly
chlorinated
persistent
organic
pollutant
(2,2′,4,5,5′-pentachlorobiphenyl,
PCB101)
through
mediated
by
interaction
between
α-Fe2O3
NMs
and
plant-rhizobacteria
symbionts
under
dryland
conditions.
Mechanistically,
coexistence
Pseudomonas
chlororaphis
JD37
stimulated
alfalfa
roots
secrete
acidic
reductive
agents
as
well
H2O2,
which
together
rhizosphere
reaction
converted
into
rich
Fe(II)-silicate.
Further
verifications
reproduced
vitro
using
compounds,
confirming
critical
role
•OH
oxidative
degradation
PCB101.
Significant
reductions
PCB101
content
18.6%,
42.9%,
23.2%
were
respectively
found
stem,
leaf,
soil
after
120-d
treatment,
proving
effectiveness
NMs-plant-rhizobacteria
technique
simultaneously
safe
crop
production
remediation.
These
findings
can
help
expand
potential
applications
nanobio
its
generation
both
agricultural
practice
Detritusphere
is
a
hotspot
of
carbon
cycling
in
terrestrial
ecosystems,
yet
the
mineralization
soil
organic
(SOC)
within
this
microregion
associated
with
reactive
oxygen
species
(ROS)
remains
unclear.
Herein,
we
investigated
ROS
production
and
distribution
detritusphere
six
representative
soils
evaluated
their
contributions
to
SOC
mineralization.
We
found
that
was
significantly
correlated
several
chemical
biological
factors,
including
pH,
water-soluble
phenols,
water-extractable
carbon,
phenol
oxidase
activity,
surface-bound
or
complexed
Fe(II)
low-crystalline
minerals,
highly
crystalline
Fe(II)-bearing
SOC.
These
factors
collectively
contributed
99.6%
variation
production,
as
revealed
by
redundancy
analyses.
Among
ROS,
hydroxyl
radicals
(•OH)
were
key
contributors
mineralization,
responsible
for
10.4%-38.7%
CO2
emissions
quenching
experiments.
Inhibiting
•OH
decreased
C-degrading
enzyme
activities,
indicating
stimulates
increasing
activity.
Structural
equation
modeling
further
demonstrated
promotes
activities
degrading
phenols
unlock
"enzyme
latch"
availability
upregulate
gene
expression.
pathways
equally
exceeded
its
direct
effect.
findings
provide
detailed
insight
into
mechanistic
•OH-mediated
dynamics
detritusphere.
Plants,
Journal Year:
2025,
Volume and Issue:
14(9), P. 1395 - 1395
Published: May 6, 2025
Reactive
oxygen
species
(ROS),
as
redox
messengers,
play
an
important
role
in
regulating
plant
growth,
sensing
biotic
and
abiotic
stresses,
integrating
different
environmental
signals.
As
the
microenvironment
of
interaction
between
root,
soil
microorganism,
rhizosphere
is
hotspot
ROS
production
action.
Root
exudates
are
medium
for
communication
roots
environment,
they
have
a
significant
regulatory
effect
on
rhizosphere.
At
same
time,
formation
determined
by
coupling
various
factors,
it
also
affected
stresses
such
temperature,
humidity,
disease.
This
review
summarizes
how
root
affect
growth
induce
defense
mechanisms
generation
distribution
ROS.
It
discusses
promoting
decomposition
organic
matter,
nutrient
cycling,
pollutant
degradation
transformation.
In-depth
study
regulation
mechanism
not
only
helps
to
reveal
molecular
adaptation
stress
but
provides
theoretical
support
practical
guidance
sustainable
agricultural
development
ecological
environment
protection.
Hydroxyl
radicals
(•OH)
are
extensively
produced
from
crystalline
iron
minerals
under
redox
oscillation,
during
which
their
oxidizing
impact
on
pollutant
dynamics
is
often
limited
by
low
transportation.
While
natural
organic
matter
exists
as
a
ubiquitous
mediator,
how
it
regulates
the
distance
scale
of
•OH
production
in
heterogeneous
system
remains
poorly
understood.
This
study,
for
first
time,
reports
an
unrecognized
route
mediated
humic
acid
(HA)
extending
spatial
range
oxygenation
reduced
hematite
(rHem).
The
results
showed
that
HA
facilitated
redistribution
surface
to
solution,
posing
inverse
impacts
oxidation
efficacies
pollutants
with
varying
accessibilities.
It
was
difficult
explain
enhanced
free
using
electron
shuttling
quinones
or
dissolved
Fe-HA
complexes.
Comprehensive
evidence
demonstrated
adsorbed
preferentially
consumed
surface-bound
trigger
solid-to-liquid
propagation
carbon-centered
(CCR•),
dominantly
promoting
formation
secondary
far
surface.
Reactive-transport
simulation
and
situ
fluorescence
visualized
interfacial
centimeter-scale
long-range
CCR•.
Fourier
transform
ion
cyclotron
resonance
mass
spectrometry
verified
role
decarboxylation
CCR•
generation.
These
findings
offer
new
insights
into
environmental
fate
cycling
engineered
systems,
including
those
matter.
