Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Май 20, 2025
Soil
salinization
caused
by
water
scarcity
in
Northwest
China
severely
limits
agricultural
sustainability.
A
forest-grass
intercropping
system
combined
with
regulation
strategies
can
optimize
soil
and
resource
use,
reduce
stress,
mitigate
salinization,
promote
sustainable
eco-efficient
development
arid
regions.
In
this
study,
based
on
a
3-year
field
experiment,
four
were
set
up
[upper
lower
moisture
controlled
content
as
percentage
of
holding
capacity
θ
f
,
full
irrigation
W0
(75%–85%
),
mild
deficit
W1
(65%–75%
moderate
W2
(55%–65%
severe
W3
(45%–55%
)],
the
effects
crop
growth,
physiology,
yield
quality
wolfberry-alfalfa
analyzed.
The
results
showed
that
(1)
increasing
would
limit
growth
wolfberry
alfalfa,
alfalfa
being
maximal
at
vegetative
stage-full
flowering
stage,
plant
height
stem
thickness
both
first
crop.
(2)
With
increase
deficit,
chlorophyll
photosynthetic
characteristics
crops
decreasing
trend.
Among
them,
daily
dynamics
leaf
photosynthesis
net
rate
(P
n
)
transpiration
(T
r
presented
single-peak
curve,
P
T
stomatal
conductance
(Cond)
double-peak
inter-cellular
carbon
dioxide
concentration
(C
i
them
reached
minimum
from
12:00
to
14:00.
(3)
planting
years,
dry
fruit
total
an
trend,
while
all
trend;
higher
(W0
W1)
was
more
favorable
improvement.
multicriteria
assessment
treatment
improved
ensuring
efficient
use.
This
serves
control
model
for
conservation,
increase,
improvement
saline
zone
similar
ecological
zones
northwestern
China.
Abstract
Background
Overgrazing
(OG)
is
an
important
driver
of
grassland
degradation
and
productivity
decline.
Highly
effective
synergy
between
plants
rhizosphere
growth-promoting
rhizobacteria
(PGPR)
may
be
a
major
way
for
to
effectively
cope
with
OG
stress.
There
have
been
few
reports
providing
solid
evidence
on
how
this
occurs.
Result
This
study
combined
multi-omics
analysis
the
interaction
effect
specific
root
exudate
PGPR
B68,
aiming
reveal
synergistic
regulatory
mechanism
L.
chinensis
under
overgrazing
The
results
showed
that
Leymus
history
can
recruit
beneficial
Phyllobacterium
sp.
B68
by
regulating
compounds(such
as
amino
acid
L-leucyl-L-alanine
alkaloid
cordycepin).
These
compounds
enhanced
colonization
promoting
chemotaxis
biofilm
formation.
pot
experiments
indicated
bacterial
isolates
used
bio
inoculants
increased
growth
(mainly
including
plant
height
biomass)
significantly
increasing
chlorophyll
content,
RuBisCO
activity,
soluble
sugar,
hormones
nutrient
content.
Metagenomics
show
inoculation
altered
soil
community
composition
function.
Additionally,
systemically
upregulated
expression
level
genes
involved
in
hormone
signaling,
sugar
transporters,
nitrogen
metabolism,
cell
division,
wall
modification
photosynthesis
promote
growth.
above
indicate
recruited
exudates
helps
adapt
stress
uptake
transport,
maintaining
homeostasis,
enhancing
related
metabolism.
Conclusion
provides
new
insights
into
positive
interactions
bacteria
stress,
offering
valuable
knowledge
developing
fertilizers
better
management
practices
degraded
rangeland
restoration
sustainable
agriculture
development.
Clinical
trial
number
Not
applicable.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Май 20, 2025
Soil
salinization
caused
by
water
scarcity
in
Northwest
China
severely
limits
agricultural
sustainability.
A
forest-grass
intercropping
system
combined
with
regulation
strategies
can
optimize
soil
and
resource
use,
reduce
stress,
mitigate
salinization,
promote
sustainable
eco-efficient
development
arid
regions.
In
this
study,
based
on
a
3-year
field
experiment,
four
were
set
up
[upper
lower
moisture
controlled
content
as
percentage
of
holding
capacity
θ
f
,
full
irrigation
W0
(75%–85%
),
mild
deficit
W1
(65%–75%
moderate
W2
(55%–65%
severe
W3
(45%–55%
)],
the
effects
crop
growth,
physiology,
yield
quality
wolfberry-alfalfa
analyzed.
The
results
showed
that
(1)
increasing
would
limit
growth
wolfberry
alfalfa,
alfalfa
being
maximal
at
vegetative
stage-full
flowering
stage,
plant
height
stem
thickness
both
first
crop.
(2)
With
increase
deficit,
chlorophyll
photosynthetic
characteristics
crops
decreasing
trend.
Among
them,
daily
dynamics
leaf
photosynthesis
net
rate
(P
n
)
transpiration
(T
r
presented
single-peak
curve,
P
T
stomatal
conductance
(Cond)
double-peak
inter-cellular
carbon
dioxide
concentration
(C
i
them
reached
minimum
from
12:00
to
14:00.
(3)
planting
years,
dry
fruit
total
an
trend,
while
all
trend;
higher
(W0
W1)
was
more
favorable
improvement.
multicriteria
assessment
treatment
improved
ensuring
efficient
use.
This
serves
control
model
for
conservation,
increase,
improvement
saline
zone
similar
ecological
zones
northwestern
China.
