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
Plants,
Год журнала:
2022,
Номер
11(9), С. 1219 - 1219
Опубликована: Апрель 30, 2022
Drought
is
the
main
limiting
abiotic
environmental
stress
worldwide.
Water
scarcity
restricts
growth,
development,
and
productivity
of
crops.
Wheat
(Triticum
aestivum
L.)
a
fundamentally
cultivated
cereal
crop.
This
study
aimed
to
evaluate
effect
grain-priming
with
arginine
(0.25,
0.5,
1
mM)
on
growth
performance
some
physiological
aspects
wheat
plants
under
normal
or
drought-stressed
conditions.
Morphological
parameters,
photosynthetic
pigments,
soluble
sugars,
free
amino
acids,
proline,
total
phenols,
flavonoids,
proteins
profiles
were
determined.
lowered
plant
parameters
chlorophyll
b
contents
while
increasing
carotenoids,
flavonoids.
Soaking
grains
improves
mitigates
harmful
effects
drought
stress.
The
most
effective
treatment
alleviate
was
(1
arginine,
that
increased
root
length
(48.3%),
leaves
number
(136%),
shoot
fresh
weight
(110.5%),
(110.8%),
dry
(107.7%),
(11.4%),
(38.7%),
carotenoids
content
(41.9%)
compared
corresponding
control
values.
Arginine
enhanced
synthesis
flavonoids
in
stressed
Furthermore,
protein
profile
varies
response
pretreatments.
Ultimately,
pretreatment
had
powerful
potential
face
impacts
by
promoting
metabolic
aspects.
Frontiers in Microbiology,
Год журнала:
2023,
Номер
14
Опубликована: Авг. 2, 2023
Plant-associated
microbes
include
taxonomically
diverse
communities
of
bacteria,
archaebacteria,
fungi,
and
viruses,
which
establish
integral
ecological
relationships
with
the
host
plant
constitute
phyto-microbiome.
The
phyto-microbiome
not
only
contributes
in
normal
growth
development
plants
but
also
plays
a
vital
role
maintenance
homeostasis
during
abiotic
stress
conditions.
Owing
to
its
immense
metabolic
potential,
provides
capability
mitigate
through
various
mechanisms
like
production
antioxidants,
hormones,
bioactive
compounds,
detoxification
harmful
chemicals
toxins,
sequestration
reactive
oxygen
species
other
free
radicals.
A
deeper
understanding
structure
functions
complex
mediated
mitigation
would
enable
utilization
for
alleviation
crop
stress-resistant
crops.
This
review
aims
at
exploring
potential
alleviate
drought,
heat,
salinity
heavy
metal
finding
sustainable
solutions
enhance
agricultural
productivity.
mechanistic
insights
into
phytomicrobiome
imparting
tolerance
have
been
summarized,
that
be
helpful
novel
bioinoculants.
high-throughput
modern
approaches
involving
candidate
gene
identification
target
modification
such
as
genomics,
metagenomics,
transcriptomics,
metabolomics,
based
genetic
engineering
discussed
wake
ever-increasing
demand
climate
resilient
plants.
Abstract
Drought
stress
leads
to
a
significant
amount
of
agricultural
crop
loss.
Thus,
with
changing
climatic
conditions,
it
is
important
develop
resilience
measures
in
systems
against
drought
stress.
Roots
play
crucial
role
regulating
plant
development
under
In
this
review,
we
have
summarized
the
studies
on
roots
and
root‐mediated
responses.
We
also
discussed
importance
root
system
architecture
(RSA)
various
structural
anatomical
changes
that
undergoes
increase
survival
productivity
drought.
Various
genes,
transcription
factors,
quantitative
trait
loci
involved
growth
are
discussed.
A
summarization
instruments
software
can
be
used
for
high‐throughput
phenotyping
field
provided
review.
More
comprehensive
required
help
build
detailed
understanding
RSA
associated
traits
breeding
drought‐resilient
cultivars.
Frontiers in Plant Science,
Год журнала:
2023,
Номер
14
Опубликована: Апрель 18, 2023
Upon
exposure
to
drought,
plants
undergo
complex
signal
transduction
events
with
concomitant
changes
in
the
expression
of
genes,
proteins
and
metabolites.
For
example,
proteomics
studies
continue
identify
multitudes
drought-responsive
diverse
roles
drought
adaptation.
Among
these
are
protein
degradation
processes
that
activate
enzymes
signalling
peptides,
recycle
nitrogen
sources,
maintain
turnover
homeostasis
under
stressful
environments.
Here,
we
review
differential
functional
activities
plant
protease
inhibitor
stress,
mainly
focusing
on
comparative
involving
genotypes
contrasting
phenotypes.
We
further
explore
transgenic
either
overexpressing
or
repressing
proteases
their
inhibitors
conditions
discuss
potential
transgenes
response.
Overall,
highlights
integral
role
during
survival
water
deficits,
irrespective
genotypes’
level
resilience.
However,
drought-sensitive
exhibit
higher
proteolytic
activities,
while
drought-tolerant
tend
protect
from
by
expressing
more
inhibitors.
In
addition,
biology
implicate
various
other
physiological
functions
stress.
These
include
regulation
stomatal
closure,
maintenance
relative
content,
phytohormonal
systems
including
abscisic
acid
(ABA)
signalling,
induction
ABA-related
stress
all
which
essential
for
maintaining
cellular
deficits.
Therefore,
validation
required
limitation
contributions
towards
Plants,
Год журнала:
2024,
Номер
13(22), С. 3184 - 3184
Опубликована: Ноя. 13, 2024
The
intensifying
challenges
posed
by
global
climate
change
and
water
scarcity
necessitate
enhancements
in
agricultural
productivity
sustainability
within
arid
regions.
This
review
synthesizes
recent
advancements
genetic
engineering,
molecular
breeding,
precision
agriculture,
innovative
management
techniques
aimed
at
improving
crop
drought
resistance,
soil
health,
overall
efficiency.
By
examining
cutting-edge
methodologies,
such
as
CRISPR/Cas9
gene
editing,
marker-assisted
selection
(MAS),
omics
technologies,
we
highlight
efforts
to
manipulate
drought-responsive
genes
consolidate
favorable
agronomic
traits
through
interdisciplinary
innovations.
Furthermore,
explore
the
potential
of
farming
including
Internet
Things
(IoT),
remote
sensing,
smart
irrigation
systems,
optimize
utilization
facilitate
real-time
environmental
monitoring.
integration
genetic,
biotechnological,
approaches
demonstrates
a
significant
enhance
resilience
against
abiotic
biotic
stressors
while
resource
Additionally,
advanced
along
with
conservation
techniques,
show
promise
for
maximizing
efficiency
sustaining
fertility
under
saline–alkali
conditions.
concludes
recommendations
further
multidisciplinary
exploration
genomics,
sustainable
practices,
agriculture
ensure
long-term
food
security
development
water-limited
environments.
providing
comprehensive
framework
addressing
regions,
emphasize
urgent
need
continued
innovation
response
escalating
pressures.
Abstract
Background
Nitrogen
(N)
availability
is
crucial
in
regulating
plants’
abiotic
stress
resistance,
particularly
at
the
seedling
stage.
Nevertheless,
plant
responses
to
N
under
salinity
conditions
may
vary
depending
on
soil’s
NH
4
+
NO
3
−
ratio.
Methods
In
this
study,
we
investigated
effects
of
different
:NO
ratios
(100/0,
0/100,
25/75,
50/50,
and
75/25)
growth
physio-biochemical
soybean
seedlings
grown
controlled
saline
(0-,
50-,
100-mM
L
1
NaCl
Na
2
SO
,
a
1:1
molar
ratio).
Results
We
observed
that
shoot
length,
root
leaf-stem-root
dry
weight
decreased
significantly
with
increased
levels
compared
control.
Moreover,
there
was
significant
accumulation
Cl
hydrogen
peroxide
(H
O
),
malondialdehyde
(MDA)
but
impaired
ascorbate-glutathione
pools
(AsA-GSH).
They
also
displayed
lower
photosynthetic
pigments
(chlorophyll-a
chlorophyll-b),
K
ion,
/Na
ratio,
weakened
•−
-H
-scavenging
enzymes
such
as
superoxide
dismutase,
catalase,
peroxidase,
monodehydroascorbate
reductase,
glutathione
reductase
both
levels,
while
reduced
ascorbate
dehydroascorbate
stress,
demonstrating
their
sensitivity
environment.
concentrations
proline,
glycine
betaine,
total
phenolic,
flavonoids,
abscisic
acid
stresses
exhibited
indole
acetic
acid,
gibberellic
cytokinins,
zeatine
riboside,
which
account
for
biomass.
However,
caused
differential
response
alleviate
toxicity.
Soybean
supplemented
optimal
(T3
=
25:75
T
50:50)
ABA
improved
pigments,
hormones,
biomass
higher
ratios.
optimized
H
MDA,
AsA-GSH
status
favor
seedlings.
Conclusions
summary,
followed
order
50:50
>
0:100
75:25
100:0
morpho-physio-biochemical
SS
conditions.
Accordingly,
suggest
applying
(25/75
can
improve
resistance
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(2), С. 632 - 632
Опубликована: Янв. 13, 2025
Drought
and
flood
(water
stress)
alter
plant
metabolism,
impacting
the
phytochemical
content
biological
effects.
Using
spectrophotometric,
HPLC,
electrophoretic
methods,
we
analyze
effects
of
water
stress
on
broccoli
(Brassica
oleracea
L.
convar.
botrytis
(L.)
Alef.
var.
cymosa
Duch.)
sprouts.
differently
influenced
chlorophylls,
carotenoids,
porphyrins,
with
drought
having
a
stronger
inhibitory
effect
chlorophyll
a,
total
chlorophyll,
porphyrins.
Carotenoids
glucosinolates
increased
under
but
decreased
flooding,
suggesting
that
these
compounds
play
crucial
role
in
tolerance.
Nitrate
from
13.11
±
1.05
mg/g
dw
to
22.41
1.20
flooding
5.17
1.03
dw,
oxalic
acid
was
reduced
by
only
(from
48.94
1.30
46.43
0.64
dw).
Flood
proteins
29%,
phenolics
15%,
flavonoids
10%,
flavonols
11%,
tannins
36%,
proanthocyanidins
19%,
while
23%.
Total
were
29%
7%,
respectively,
hydroxycinnamic
acids
13%.
Both
types
individual
polyphenols
differently:
diminished
ferulic
17%
sinapic
30%,
reversed
enhanced
kaempferol
22%.
These
compounds,
along
proline
(which
139%
drought),
emerged
as
biomarkers
stress.
impacted
antioxidant
capacity
more
significantly,
drought-stressed
extracts
better
protected
plasmid
DNA
against
oxidative
damage.
findings
underline
metabolic
plasticity
sprouts
their
potential
targeted
crop
management
for
resilience.
