Biology,
Год журнала:
2022,
Номер
11(8), С. 1192 - 1192
Опубликована: Авг. 8, 2022
Drought
stress
is
a
major
abiotic
that
hinders
plant
growth
and
development.
Brassinosteroids
(BR),
including
2,4-epibrassinolide
(EBR),
play
important
roles
in
growth,
development,
responses
to
stresses,
drought
stress.
This
work
investigates
exogenous
EBR
application
improving
tolerance
tobacco.
Tobacco
plants
were
divided
into
three
groups:
WW
(well-watered),
DS
(drought
stress),
DSB
+
0.05
mM
EBR).
The
results
revealed
decreased
the
leaf
thickness
(LT),
whereas
upregulated
genes
related
cell
expansion,
which
induced
by
BR
(DWF4,
HERK2,
BZR1)
IAA
(ARF9,
ARF6,
PIN1,
SAUR19,
ABP1)
signaling
pathway.
promoted
LT
28%,
increasing
adaptation.
Furthermore,
improved
SOD
(22%),
POD
(11%),
CAT
(5%)
enzyme
activities
their
expression
(FeSOD,
POD,
CAT)
along
with
higher
accumulation
of
osmoregulatory
substances
such
as
proline
(29%)
soluble
sugars
(14%)
under
conferred
tolerance.
Finally,
augmented
auxin
(IAA)
(21%)
brassinolide
(131%)
contents
(BRL3
BZR2)
(YUCCA6,
SAUR32,
IAA26)
pathways.
These
suggest
it
could
an
role
mechanisms
Frontiers in Plant Science,
Год журнала:
2025,
Номер
15
Опубликована: Янв. 20, 2025
Abiotic
stresses
are
considered
as
a
significant
factor
restricting
horticultural
crop
productivity
and
quality.
Drought
stress
is
major
environmental
constraint
among
the
emerging
concerns.
Plants
have
susceptibility
to
drought
stress,
resulting
in
marked
decline
production
during
last
several
decades.
The
development
of
effective
strategies
mitigate
essential
for
sustainable
agriculture
food
security,
especially
considering
continuous
growth
world
population.
Several
studies
suggested
that
exogenous
application
phytohormone
plants
can
improve
tolerance
by
activating
molecular
physiological
defense
systems.
Phytohormone
pretreatment
potential
approach
alleviating
plants.
In
addition,
melatonin,
salicylic
acid,
jasmonates,
strigolactones,
brassinosteroids,
gamma-aminobutyric
acid
phytohormones
function
regulators
effects
stress.
These
hormones
frequently
interact
with
one
another
survival
drought-stressed
environments.
To
sum
up,
this
review
will
predominantly
elucidate
role
related
mechanisms
across
various
horticulture
species.
Abstract
Background
Drought
stress
is
a
catastrophic
abiotic
stressor
that
impedes
the
worldwide
output
of
commodities
and
development
plants.
The
Utilizing
biological
antioxidant
stimulators,
Arbuscular
mycorrhizal
fungi
(AMF)
are
one
example
increased
plants'
ability
to
withstand
effects
drought.
symbiotic
response
soybean
(
Glycine
max
L.)
AMF
inoculation
was
assessed
in
experiment
presented
herewith
at
different
watering
regimes
(field
capacity
25,
50,
90%).
vegetative,
physio-biochemical
traits,
regulation
genes
involved
polyamine
synthesis
G.
plants
were
evaluated.
Results
results
obtained
suggested
has
an
advantage
over
non-inoculated
terms
their
growth
all
criteria,
which
responded
drought
by
showing
slower
development.
It
evident
gas
exchange
parameters
plant
substantially
reduced
36.79
(photosynthetic
rate;
A
),
60.59
(transpiration
E
53.50%
(stomatal
conductance
gs
respectively,
under
severe
comparison
control;
non-stressed
treatment.
However,
resulted
40.87,
29.89,
33.65%
increase
,
levels,
extremely
drought-stressful
circumstances,
when
contrast
non-AMF
grown
well-watered
conditions.
level
inversely
proportional
colonization.
total
capacity,
protein,
proline
contents
enhanced
inoculation,
while
malondialdehyde
hydrogen
peroxide
decreased.
Polyamine
biosynthesis
expression;
Ornithine
decarboxylase
(ODC2),
Spermidine
synthase
(SPDS)
Spermine
(SpS)
upregulated
even
higher
AMF’s
mild
inoculated
plants’
shoots.
This
implies
plays
apart
survival
stressed
membranes
damage
limiting
excessive
production
oxidative
generators;
ROS.
Conclusions
In
summary,
present
investigation
demonstrates
may
be
supportable
environmentally
advantageous
method
for
improving
growth,
incident
limited
water
availability.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
16
Опубликована: Март 27, 2025
Due
to
extended
periods
of
below-normal
rainfall
and
rising
temperatures,
drought
is
a
significant
global
issue
for
agricultural
productivity.
Hydrological,
agricultural,
meteorological
droughts
all
pose
different
problems
with
regard
the
availability
water
important
crops,
which
in
turn
impacts
plant
development
yield.
Depending
on
crop
species
stage
maturity,
stress
degrades
metabolism
physiological
processes,
resulting
decreased
growth
yield
losses
that
can
range
from
30%
90%.
Acclimatization
adaptation
are
two
basic
techniques
plants
use
survive
drought.
Rapid
alterations
processes
chemical
composition,
including
modifications
osmotic
pressure,
root
leaf
size,
antioxidant
systems,
part
acclimatization.
Xerophytism
succulence
characteristics
drought-resistant
have
evolved
assist
preserve
cellular
integrity
balance
water-limited
environments.
Even
these
tactics,
majority
crops—such
as
maize,
rice,
wheat—remain
extremely
vulnerable
stress.
To
lessen
effects
drought,
researchers
looked
into
number
strategies,
both
conventional
cutting-edge
methods.
Conventional
techniques,
like
application
growth-promoting
bacteria
(PGPB)
morphological
modifications,
remain
essential
improving
resilience.
Recent
breakthroughs
provided
innovative
alternatives
such
nanoparticle
(NP)
treatments
biochar,
enhance
Biochar
enhances
soil
moisture
retention
nutrient
accessibility,
whereas
nanoparticles
augment
absorption
bolster
molecular
resilience
under
Furthermore,
microbial
inoculants
absorption,
facilitating
arid
conditions.
This
review
examines
three
staple
emphasizing
traditional
novel
approaches
consequences
We
highlight
how
combining
insights
ecology,
biochemistry,
biology,
technologies
biochar
boost
production
resistance
water-scarce
Horticulturae,
Год журнала:
2025,
Номер
11(5), С. 456 - 456
Опубликована: Апрель 24, 2025
In
the
context
of
climate
change
and
severe
water
shortages
in
agriculture,
we
explored
stress
responses
sweet
potato
(Ipomoea
batatas)
terms
endogenous
hormone
levels
other
physiological
characteristics,
providing
a
theoretical
basis
for
drought-resistant
cultivation
potato.
This
study
was
conducted
from
2021–2022
solar
greenhouse
under
artificially
controlled
conditions.
We
determined
biomass,
agronomic
indexes,
photosynthetic
parameters,
three
treatments:
normal
supply
(CK),
mild
drought
(LD),
(HD).
The
results
revealed
that
inhibited
aboveground
belowground
growth
compared
with
CK;
yield
decreased
increasing
drought.
net
rate,
stomatal
conductance,
transpiration
rate
leaves
significantly
stress.
leaves’
intercellular
CO2
concentration
(Ci)
up
to
50
days
after
transplanting
but
increased
75
transplanting.
zeatin
riboside
(ZR)
indole-3-acetic
acid
(IAA)
contents
were
lower
tubers
LD
HD
treatments
CK,
whereas
abscisic
(ABA)
content
higher.
Within
same
period,
(ZR
+
IAA)/ABA
ratio
severity.
Correlation
analysis
ABA
leaf
Ci
positively
correlated,
both
indices
negatively
correlated
all
indices.
Aboveground
dry
weight
ZR
IAA
contents.
These
findings
demonstrate
regulatory
effects
elevated
concentrations
on
conductance
during
indicate
closure
mainly
responsible
observed
early
stage
rapid
decrease
late
may
have
been
caused
by
non-stomatal
factors.
provide
foundation
future
cultivation.
Biology,
Год журнала:
2022,
Номер
11(8), С. 1192 - 1192
Опубликована: Авг. 8, 2022
Drought
stress
is
a
major
abiotic
that
hinders
plant
growth
and
development.
Brassinosteroids
(BR),
including
2,4-epibrassinolide
(EBR),
play
important
roles
in
growth,
development,
responses
to
stresses,
drought
stress.
This
work
investigates
exogenous
EBR
application
improving
tolerance
tobacco.
Tobacco
plants
were
divided
into
three
groups:
WW
(well-watered),
DS
(drought
stress),
DSB
+
0.05
mM
EBR).
The
results
revealed
decreased
the
leaf
thickness
(LT),
whereas
upregulated
genes
related
cell
expansion,
which
induced
by
BR
(DWF4,
HERK2,
BZR1)
IAA
(ARF9,
ARF6,
PIN1,
SAUR19,
ABP1)
signaling
pathway.
promoted
LT
28%,
increasing
adaptation.
Furthermore,
improved
SOD
(22%),
POD
(11%),
CAT
(5%)
enzyme
activities
their
expression
(FeSOD,
POD,
CAT)
along
with
higher
accumulation
of
osmoregulatory
substances
such
as
proline
(29%)
soluble
sugars
(14%)
under
conferred
tolerance.
Finally,
augmented
auxin
(IAA)
(21%)
brassinolide
(131%)
contents
(BRL3
BZR2)
(YUCCA6,
SAUR32,
IAA26)
pathways.
These
suggest
it
could
an
role
mechanisms
