Plant Stress,
Journal Year:
2024,
Volume and Issue:
13, P. 100511 - 100511
Published: June 6, 2024
Arsenic
(As),
an
environmental
pollutant,
imposes
toxic
impacts
on
plant
health.
In
recent
years,
researchers
have
focused
comprehending
the
As-induced
intrusion
in
growth
and
metabolic
components.
However,
interactions
between
phosphorus
(P)
silicon
(Si)
remain
elusive,
specifically
rice
(Oryza
sativa)
cultivars.
Therefore,
present
study
investigated
effects
of
P
Si
defense
mechanisms,
nutrients
accumulation,
carbohydrate
metabolism,
gibberellic
acid
(GA3)
synthesis,
responses
Indica
cultivars
(landrace
improved)
under
As
stress.
With
this
focus,
our
potentially
indicated
that
stress
(150
µM)
negatively
impacted
underlying
physiological
traits,
with
more
pronounced
improved
cultivar
compared
to
landrace.
(30
mg
kg−1
soil)
and/
or
(1
mM)
treatments
prominently
reduced
oxidative
mechanisms
GA
synthesis.
Modulation
enzymatic
system
increased
both
but
landrace,
including
superoxide
dismutase
(+36.47%,
+24.43%),
ascorbate
peroxidase
(+95.11%,
+78.26%),
along
non-enzymatic
antioxidants
such
as
(+29.43%,
+21.48%),
glutathione
(+75.45%,
+62.34%)
concentrations,
respectively.
Notably,
concentration
(+23.78%,
+16.48%)
was
substantially
by
cumulative
application
conspicuous
Further,
employing
biosynthesis
inhibitor,
paclobutrazol
(PBZ;
10
µM),
substantiated
input
GA-mediated
tolerance,
wherein,
PBZ
reversed
endogenous
metabolism.
summation,
landrace
outperformed
leading
tolerance.
This
implies
could
be
used
for
future
breeding
programs
permitting
in-depth
considerations
Si-mediated
GA3
synthesis
conditions.
Journal of Nanobiotechnology,
Journal Year:
2024,
Volume and Issue:
22(1)
Published: March 5, 2024
Abstract
The
primary
factors
that
restrict
agricultural
productivity
and
jeopardize
human
food
safety
are
heavy
metals
(HMs),
including
arsenic,
cadmium,
lead,
aluminum,
which
adversely
impact
crop
yields
quality.
Plants,
in
their
adaptability,
proactively
engage
a
multitude
of
intricate
processes
to
counteract
the
impacts
HM
toxicity.
These
orchestrate
profound
transformations
at
biomolecular
levels,
showing
plant’s
ability
adapt
thrive
adversity.
In
past
few
decades,
stress
tolerance
crops
has
been
successfully
addressed
through
combination
traditional
breeding
techniques,
cutting-edge
genetic
engineering
methods,
strategic
implementation
marker-dependent
approaches.
Given
remarkable
progress
achieved
this
domain,
it
become
imperative
adopt
integrated
methods
mitigate
potential
risks
arising
from
environmental
contamination
on
yields,
is
crucial
as
we
endeavor
forge
ahead
with
establishment
enduring
systems.
manner,
nanotechnology
emerged
viable
field
sciences.
applications
extensive,
encompassing
regulation
stressors
like
toxic
metals,
improving
efficiency
nutrient
consumption
alleviating
climate
change
effects.
Integrating
nanomaterials
agrochemicals
mitigated
drawbacks
associated
agrochemicals,
challenges
organic
solvent
pollution,
susceptibility
photolysis,
restricted
bioavailability.
Numerous
studies
clearly
show
immense
nanofertilizers
tackling
acute
crisis
toxicity
production.
This
review
seeks
delve
into
using
NPs
effectively
enhance
resilience,
thereby
fostering
an
environmentally
friendly
economically
approach
toward
sustainable
advancement
foreseeable
future.
Water,
Journal Year:
2024,
Volume and Issue:
16(17), P. 2417 - 2417
Published: Aug. 27, 2024
Assessing
groundwater
quality
is
essential
for
ensuring
the
sustainability
of
agriculture
and
ecosystems.
This
study
evaluates
contamination
by
heavy
metals
(HMs)
using
GIS
approaches,
multivariate
statistical
analysis
(MSA),
pollution
indices
(heavy
metal
index
(HPI),
(MI),
degree
(Cd),
ecological
risk
(ERI),
(PI)),
human
health
assessment
(HHRA).
The
results
revealed
significant
variations
in
concentrations
across
area,
with
highest
found
southern
southeastern
parts,
characterized
intense
agricultural
activities
uncontrolled
landfills.
Statistical
analyses
indicated
both
natural
anthropogenic
sources
contamination.
Pollution
showed
medium
to
high
water
levels,
HPI
values
ranging
from
20.23
128.60,
MI
3.34
12.17,
Cd
2.90
11.73,
indicating
varying
degrees
ERI
suggested
a
low
all
samples.
However,
assessments
highlighted
non-carcinogenic
carcinogenic
risks,
particularly
children,
TCR
some
like
Ni
Cr
exceeding
safe
limits,
potential
hazards.
findings
provide
valuable
framework
policymakers
develop
targeted
strategies
mitigating
sustainable
management.
Plant Stress,
Journal Year:
2024,
Volume and Issue:
11, P. 100418 - 100418
Published: Feb. 27, 2024
Rice
is
a
worldwide
cultivated
crop
that
serves
as
an
important
source
of
food
for
the
human
population,
but
it
also
simplest
route
arsenic
(As)
contamination
chain.
The
As
inorganic
forms,
arsenate
[As(V)]
and
arsenite
[As(III)],
are
highly
toxic
species
found
in
soil
most
easily
absorbed
by
roots.
absorption
As(V)
prevails
aerobic
soils
while
As(III)
favored
anaerobic
soils.
converted
to
roots,
although
small
amounts
remain
plant
organs.
root
system
first
target
action
both
forms.
mechanisms
still
widely
unknown.
Understanding
them
essential
selecting
rice
genotypes
with
lower
capacity
uptake
transport
caryopses,
thus
improving
safety.
Auxin
phytohormone
necessary
development
plasticity
system,
its
modulated
endogenous/exogenous
brassinosteroids
(BRs),
mainly
under
stress
conditions.
research
aim
was
deepen
knowledge
triggered
or
roots
particular
attention
role
played
interaction
between
auxin
BRs.
We
show
main
present
regardless
forms
supplied
growing
medium.
Arsenic
alters
distribution
adventitious
lateral
strongly
latter
ones.
application
exogenous
BR,
24-epibrassinolide
(eBL),
combined
increases
expression
OsPIN2
OsAUX1
genes
involved
transport,
contributing
restore
correct
altered
As,
As(III),
higher
effects
on
LRs.
Moreover,
eBL
antioxidant
activity
presence
only
when
As(V).
Environmental Technology & Innovation,
Journal Year:
2024,
Volume and Issue:
35, P. 103673 - 103673
Published: May 14, 2024
Arsenite
(AsIII)-oxidizing
and
plant
growth-promoting
bacteria
(PGPB)
grown
in
0-50
µM
AsIII
hydroponic
solution
were
coinculated
with
KDML105
rice
seedlings,
the
kinetics
of
arsenic
(As)
uptake
responses
examined.
The
reduced
oxidative
stress
improved
growth
parameters
seedlings.
levels
enzymatic
nonenzymatic
antioxidant
compounds
(particularly
phytochelatins)
sulfide
significantly
greater
coinoculated
(RB)
than
uninoculated
(R)
Among
bacterial
combinations,
KKU2500-3/4.44
coinoculation
yielded
best
results
As
accumulation
by
14-25%
roots,
38-60%
shoots,
17-67%
leaves
compared
that
R
dose-dependent
assay
revealed
clear
reductions
transport,
as
represented
Vmax
increased
Km
values.
values
obtained
for
net
apoplastic
RB
seedlings
138.75
nmol/g
FW/h,
which
lower
those
(146.15
139.88
respectively).
78.20
95.59
nM,
(69.90
85.80
These
indicated
blocked
loading
from
roots
to
xylem
enhancing
defense
thiol
metabolism.
Thus,
Cupriavidus
taiwanensis
KKU2500-3
Pseudomonas
stutzeri
4.44
might
promote
cultivation
under
a
wide
range
should
be
investigated
paddy
fields.