The
iron
oxyhydroxides
of
plaque
on
the
surface
rice
root
is
crucial
for
utilization
nutrition
elements
especially
phosphorus
(P),
while
coupled
chemical
and
biological
mechanism
accumulation
uptake
P
still
unresolved.
In
this
study,
we
investigated
regulatory
in
via
combination
hydroponics
whole
plant
simulation
experiment
construction
oxyhydroxides-coated
suspension
cell
lines.
results
showed
that
presence
increased
content
shoot.
also
cells
with
absorption
P.
To
understand
mechanisms
hydroxides
systems,
further
analyzed
effects
potential
by
Fe
coated
surfaces
before
after
adsorption
coating
was
conducive
to
adsorbing
more
This
study
provides
a
understanding
rice,
which
may
hold
significant
implications
comprehending
efficient
nutrients
biogeochemical
cycle
at
soil-plant
interface.
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(46), P. 20751 - 20760
Published: Nov. 6, 2024
The
dark
generation
of
reactive
oxygen
species
(ROS),
particularly
hydroxyl
radicals
(·OH),
is
crucial
in
the
oxidative
transformation
various
pollutants.
However,
mechanisms
behind
this
process
are
predominantly
linked
to
direct
O
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(15), P. 6909 - 6921
Published: April 2, 2024
The
coprecipitation
of
iron
(Fe)
and
phosphorus
(P)
in
natural
environments
limits
their
bioavailability.
Plant
root-secreted
organic
acids
can
dissolve
Fe–P
precipitates,
but
the
molecular
mechanism
underlying
mobilizing
biogenic
elements
from
highly
insoluble
inorganic
minerals
remains
poorly
understood.
Here,
we
investigated
vivianite
(Fe3(PO4)2·8H2O)
dissolution
by
(oxalic
acid
(OA),
citric
(CA),
2′-dehydroxymugineic
(DMA))
at
three
different
pH
values
(4.0,
6.0,
8.0).
With
increasing
pH,
efficiency
OA
CA
was
decreased
while
that
DMA
increased,
indicating
various
mechanisms
acids.
Under
acidic
conditions,
weak
ligand
(HC2O4–
>
C2O42–
4.0
6.0)
dissolved
through
H+
effect
to
form
irregular
pits,
under
alkaline
condition
(pH
8.0),
completely
deprotonated
insufficient
vivianite.
At
4.0,
(H2Cit–
HCit2–
H3Cit)
pits
a
proton-promoted
mechanism,
6.0
(HCit2–
Cit3–)
8.0
(Cit3–),
near-rhombohedral
ligand-promoted
mechanism.
((H0)DMA3–
(H1)DMA2–
(H0)DMA3–
one
imino
strong
via
mechanisms.
Raman
spectroscopy
showed
carboxyl
groups
(COO–)
were
bound
Fe
on
(010)
face.
surface
free
energy
coated
with
29.32
mJ
m–2
24.23
then
13.47
resulted
similar
pH-dependent
free-energy
decrease
increased
31.92
39.26
49.93
m–2.
Density
functional
theory
(DFT)-based
calculations
confirmed
these
findings.
Our
findings
provide
insight
into
which
proton
effects.
