A
significant
portion
of
the
global
population
lacks
access
to
a
balanced
diet,
leading
widespread
micronutrient
deficiencies.
Selenium
(Se)
deficiency
affects
approximately
1
billion
people
worldwide,
and
agronomic
biofortification
food
crops
using
inorganic
Se
fertilizers
or
nanoparticles
(SeNPs)
has
emerged
as
potential
solution.
However,
ensure
safety,
it
is
critical
assess
whether
nonbioavailable
toxic
species
are
formed
when
SeNPs
introduced
into
plants.
In
this
study,
pot
experiments
with
rice
plants
(Oryza
sativa
L.)
were
conducted
evaluate
effects
foliar
applications
selenite
(Se(IV))
on
uptake,
translocation,
speciation.
Plant
growth,
chemical,
biochemical
parameters
evaluated.
accumulation
speciation
determined
inductively
coupled
plasma
mass
spectrometry
(ICP-MS)
high-performance
liquid
chromatography
ICP-MS
(HPLC-ICP-MS).
The
results
demonstrated
that
SeNP
treatment
did
not
adversely
affect
plant
grain
yield,
oxidative
stress
significantly
increase
content
in
grains.
From
nutritional
perspective,
grains
biofortified
had
meet
100%
recommended
daily
intake.
Meanwhile,
Se(IV)
was
more
efficient
for
but
increased
concentration
by
141%
compared
control
group.
Regardless
applied,
fertilization
proportion
selenomethionine
while
reduced
selenocysteine
compromise
quality
As
from
175
210
μg
kg–1,
which
remains
below
maximum
allowable
limit
350
kg–1
husked
rice.
application
enables
production
Se-enriched
levels
controlled
within
safe
range
human
consumption
without
altering
concentrations.
This
approach
offers
viable
strategy
addressing
through
ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(13)
Published: March 28, 2025
Abstract
The
antioxidant
properties
of
Se
nanoparticles
(SeNPs)
have
been
frequently
observed
in
biological
systems.
Reduced
levels
hydrogen
peroxide
reported,
but
it
remains
unclear
whether
this
effect
is
due
to
the
increased
activity
enzymes
caused
by
SeNPs
or
may
be
result
their
direct
involvement
reduction
process.
This
work
demonstrates
ability
reduce
H
2
O
with
concomitant
oxidation
elemental
Se(VI)
at
physiological
pH
and
presence
major
serum
protein.
(96
±
8
nm)
were
obtained
from
sodium
selenite
addition
cysteine
bovine
albumin.
In
a
quantitative
approach
added
solution
(5:1
molar
excess
)
where
was
continuously
generated
glucose–glucose
oxidase
system.
During
reaction
time
60
min,
oxidatively
dissolved
selenium
determined
hydride
generation‐microwave
plasma‐atomic
emission
spectrometry
UV–vis
spectrophotometric
assay,
respectively.
results
indicate
conversion
both
Within
one
hour,
5.9%
initial
concentration
removed
when
enzymatically
glucose,
its
expected
content
decreased
17.2%.
Talanta,
Journal Year:
2024,
Volume and Issue:
277, P. 126417 - 126417
Published: June 12, 2024
Agronomic
biofortification
using
selenium
nanoparticles
(SeNPs)
shows
potential
for
addressing
deficiency
but
further
research
on
SeNPs-plants
interaction
is
required
before
it
can
be
effectively
used
to
improve
nutritional
quality.
In
this
work,
single-particle
inductively
coupled
plasma-mass
spectrometry
(SP-ICP-MS)
was
tracing
isotopically
labeled
SeNPs
(
Plant Stress,
Journal Year:
2024,
Volume and Issue:
12, P. 100479 - 100479
Published: May 11, 2024
Elevated
concentrations
of
tropospheric
ozone
(O3)
pose
a
significant
threat
to
food
production
in
many
regions
the
world.
We
conducted
two-year
experiment
with
five
winter
wheat
(Triticum
aestivum
L.)
cultivars,
Yangmai16
(Y16),
Yangmai23
(Y23),
Zhenmai12
(Z12),
Yangmai29
(Y29),
and
Yangmai30
(Y30),
assess
photosynthetic
traits,
lipid
peroxidation,
antioxidant
systems
under
ambient
(A-O3)
or
elevated
(E-O3;
1.5
times
A-O3)
O3
Free-Air
O3-Concentration
Enrichment
system
(FACE).
E-O3
accelerated
leaf
senescence,
manifested
by
marked
reductions
rate,
stomatal
conductance,
total
capacity,
pigment
content,
accompanied
altered
enzyme
activity
increase
malondialdehyde
content
(an
indicator
peroxidation).
Most
parameters
showed
inter-cultivar
differences,
as
well
interactions
between
cultivar.
The
response
flag
leaves
was
influenced
exposure
levels.
enzymes
at
grain
filling
stage
timely
closure
stomata
conferred
tolerance
O3.
This
associated
higher
anthesis
but
not
related
size
stomata.
study
provides
crucial
theoretical
foundation
for
further
breeding
O3-tolerant
cultivars.
Toxics,
Journal Year:
2024,
Volume and Issue:
12(7), P. 482 - 482
Published: July 1, 2024
Nanotechnology
has
been
increasingly
used
in
plant
sciences,
with
engineered
nanoparticles
showing
promising
results
as
fertilizers
or
pesticides.
The
present
study
compared
the
effects
foliar
application
of
Se
(SeNPs)
sodium
selenite-Se(IV)
on
rice
seedlings.
degree
growth,
photosynthetic
pigment
content,
and
concentrations
Se,
Na,
Mg,
K,
Ca,
Mn,
Co,
Cu,
Zn,
As,
Cd,
Pb
were
evaluated.
showed
that
SeNPs
at
high
(5
mg
L−1),
well
Se(IV),
inhibited
growth
increased
root
As
Pb.
0.5
L−1
significantly
accumulation
aerial
part
from
0.161
±
0.028
kg−1
to
0.836
0.097
without
influencing
physiological,
chemical,
biochemical
parameters.
When
applied
leaves,
tended
remain
part,
while
Se(IV)
caused
a
higher
translocation
shoots
roots.
This
provides
useful
information
concerning
uptake,
accumulation,
different
formulations
seedlings
their
effect
ionomic
profiles,
thus
low
can
be
an
effective
safe
alternative
for
biofortification.
