Mitigation of salinity stress via improving growth, chlorophyll contents and antioxidants defense in sunflower with Bacillus pumilis and biochar
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 20, 2025
Increasing
salinity
stress
is
a
significant
challenge
in
agriculture,
affecting
~
20%
of
irrigated
areas
worldwide.
It
can
induce
osmotic
stress,
oxidative
and
nutrient
imbalance
plants.
Using
rhizobacterial
species
biochar
be
an
effective
method
to
overcome
this
issue.
Bacillus
pumilus
rhizobacteria
that
enhance
plant
salt
tolerance,
facilitate
solubilization
saline
soils,
generate
stress-alleviating
metabolites.
On
the
other
hand,
nitrilotriacetic
acid
mixed
(NAT-BC)
increase
crop
yields
mitigate
by
improving
nutrients
water
uptake.
That's
why
present
study
was
carried
out
explore
combined
effect
NAT-BC
on
sunflowers
both
non-saline
salinity-stress
sunflowers.
Four
treatments,
i.e.,
0NAT-BC,
pumilus,
0.75NAT-BC,
+
were
applied
four
replications
following
completely
randomized
design
(CRD).
Results
showed
0.75NAT-BC
caused
enhancement
sunflower
height
(103%),
stem
diameter
(45%),
head
(74%),
stomatal
conductance
(60%),
protein
content
(11%)
rate
over
control
under
stress.
A
improvement
chlorophyll
(19%),
b
(35%),
total
(54%)
compared
confirm
efficacy
concluded
applying
treatment
alleviate
via
contents,
which
most
representative
attribute
current
study.
Growers
are
recommended
apply
achieve
better
growth
Язык: Английский
Exogenous carbon inputs alleviated salt-induced oxidative stress to cotton in salinized field by improving soil aggregate structure and microbial community
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Март 27, 2025
High
concentrations
of
salt
ions
in
salinized
soils
not
only
destroy
soil
structure,
but
also
inhibit
crop
growth.
Straw
and
straw-derived
biochar
have
great
potential
improving
reducing
salinity,
environment,
alleviating
stress.
However,
the
effects
mechanisms
exogenous
addition
different
carbon
sources
on
aggregate
structure
microbial
community
with
salinization
degrees
cotton
fields
as
well
antioxidant
defense
system
are
still
unclear.
In
this
column
experiment
since
15
March,
2023,
three
contents
(1.5
(S1),
5
(S2),
10
(S3)
g/kg)
five
treatments
(straw
incorporation:
6
t/hm
2
(C1),
12
(C2);
2.25
(B1),
4.5
(B2);
CK:
no
straw
incorporation)
were
designed.
Then,
incorporation
particle
size
distribution
aggregates,
bacterial
fungal
communities,
leaf
S1,
S2,
S3
explored.
The
results
showed
that
incorporation,
especially
B2,
significantly
reduced
content
soils,
increased
proportion
macroaggregates
by
7.01%–13.12%,
5.03%–10.24%,
4.16%–8.31%,
respectively,
compared
those
CK.
C2,
abundances
Actinobacteria,
Acidobacteria,
Enterobacteriaceae,
decreased
Proteobacteria,
Besides,
superoxide
dismutase
(SOD)
catalase
(CAT)
activities
salt-stressed
leaves,
malondialdehyde
(MDA)
peroxidase
(POD)
activity,
It
should
be
noted
effect
stress
gradually
growth
increase
salinity.
summary,
could
reduce
diversity,
alleviate
cotton.
This
study
will
provide
a
scientific
basis
for
improvement
utilization
soils.
Язык: Английский