International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(17), С. 9249 - 9249
Опубликована: Авг. 26, 2024
Drought
stress
(DS)
is
one
of
the
abiotic
stresses
that
plants
encounter
commonly
in
nature,
which
affects
their
life,
reduces
agricultural
output,
and
prevents
crops
from
growing
certain
areas.
To
enhance
plant
tolerance
against
DS,
abundant
exogenous
substances
(ESs)
have
been
attempted
proven
to
be
effective
helping
relieve
DS.
Understanding
effect
each
ES
on
alleviation
DS
mechanisms
involved
relieving
process
has
become
a
research
focus
hotspot
drawn
much
attention
field
botany,
agronomy,
ecology.
With
an
extensive
comprehensive
review
summary
hundred
publications,
this
paper
groups
various
ESs
based
individual
effects
alleviating
plant/crop
with
details
underlying
DS-relieving
of:
(1)
synthesizing
more
osmotic
adjustment
substances;
(2)
improving
antioxidant
pathways;
(3)
promoting
photosynthesis;
(4)
nutritional
status;
(5)
regulating
phytohormones.
Moreover,
detailed
discussion
perspective
are
given
terms
how
meet
challenges
imposed
by
erratic
severe
droughts
agrosystem
through
using
promising
right
way
at
time.
Plant Stress,
Год журнала:
2023,
Номер
11, С. 100319 - 100319
Опубликована: Дек. 10, 2023
Global
climate
change
affects
weather
patterns,
affecting
soil
salinity
and
drought
tolerance.
Crop
resilience
agriculture
sustainability
can
be
enhanced
by
exploring
salinity,
plant
tolerance,
microbial
diversity,
remediation
techniques.
This
review
examines
the
morpho-physiological,
molecular,
genetic
mechanisms
underlying
adaptation
to
stress.
It
highlights
their
impact
on
growth,
productivity,
diversity.
Diverse
methods
are
investigated
tackle
stress,
encompassing
chemical,
physical,
biological
approaches.
Additionally,
water-efficient
agricultural
practices
drought-resistant
crop
varieties
presented
as
ways
increase
tolerance
these
stresses.
These
implications
for
sustainable
emphasize
potential
of
findings
optimize
resource
utilization,
yield,
promote
environmental
sustainability.
The
concludes
discussing
future
research
directions,
particularly
need
more
study
into
molecular
basis
plant-microbe
interactions
stress
mechanisms.
By
advancing
our
knowledge
in
this
field,
we
develop
innovative
solutions
mitigate
ensuring
food
security
changing
climates.
Microorganisms,
Год журнала:
2022,
Номер
10(7), С. 1286 - 1286
Опубликована: Июнь 24, 2022
Among
abiotic
stresses,
heat
stress
is
described
as
one
of
the
major
limiting
factors
crop
growth
worldwide,
high
temperatures
elicit
a
series
physiological,
molecular,
and
biochemical
cascade
events
that
ultimately
result
in
reduced
yield.
There
growing
interest
among
researchers
use
beneficial
microorganisms.
Intricate
highly
complex
interactions
between
plants
microbes
alleviation
stress.
Plant–microbe
are
mediated
by
production
phytohormones,
siderophores,
gene
expression,
osmolytes,
volatile
compounds
plants.
Their
interaction
improves
antioxidant
activity
accumulation
compatible
osmolytes
such
proline,
glycine
betaine,
soluble
sugar,
trehalose,
enriches
nutrient
status
stressed
Therefore,
this
review
aims
to
discuss
response
understand
mechanisms
microbe-mediated
on
physio-molecular
basis.
This
indicates
have
great
potential
enhance
protection
from
plant
Owing
metabolic
diversity
microorganisms,
they
can
be
useful
mitigating
In
regard,
microorganisms
do
not
present
new
threats
ecological
systems.
Overall,
it
expected
continued
research
tolerance
will
enable
technology
used
an
ecofriendly
tool
for
sustainable
agronomy.
Journal of soil science and plant nutrition,
Год журнала:
2022,
Номер
23(1), С. 746 - 760
Опубликована: Дек. 8, 2022
Abstract
The
beneficial
effects
of
biochar
(BC)
and
plant
growth-promoting
bacteria
(PGPR)
to
increase
crop
yields
under
harsh
environments
have
been
widely
reported.
However,
the
knowledge
on
synergistic
BC
PGPR
induce
drought
tolerance
in
oilseeds
is
scant.
In
present
study,
cotton
sticks
derived
together
with
strains
(
Paraburkholderia
phytofirmans
Bacillus
sp.)
were
examined
water-stressed
soybean
plants.
Initially,
application
rates
(1%
2%)
for
optimized
a
pilot
experiment
(experiment
I),
most
effective
level
(1%)
was
selected
further
studies
second
experiment.
plants
raised
pots
semi-controlled
conditions
subjected
stress
(25–30%
water
holding
capacity)
at
pod
formation
stage.
comparison
control,
drought-mediated
decrease
photosynthetic
pigments
gas
exchange
characteristics
markedly
lower
PGPR-treated
maximum
(12–30%)
enzymatic
antioxidant
activities
(5–20%)
recorded
treated
+
P.
,
whereas
no
significant
observed
combined
sp.
deficit
conditions.
Similarly,
considerably
increased
grain
yield
(14%)
We
conclude
that
could
be
utilized
as
an
strategy
improve
dry
arid
regions.
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.
Frontiers in Plant Science,
Год журнала:
2023,
Номер
14
Опубликована: Янв. 23, 2023
Climate
change
augments
the
risk
to
food
security
by
inducing
drought
stress
and
a
drastic
decline
in
global
rice
production.
Plant
growth-promoting
bacteria
(PGPB)
have
been
known
improve
plant
growth
under
stress.
Here
present
study,
we
isolated,
identified,
well-characterized
eight
drought-tolerant
from
rhizosphere
that
are
tolerant
20%
PEG-8000.
These
strains
exhibited
multiple
traits,
i.e.,
1-aminocyclopropane-1-carboxylic
acid
(ACC)
deaminase
activity,
exopolysaccharide
production,
phosphate
(P)-solubilizing
activity
(51–356
µg
ml
-1
),
indole-3
acetic
(IAA)
production
(14.3–46.2
of
organic
acids
(72–178
).
Inoculation
bacterial
consortium
(
Bacillus
subtilis
NM-2,
Brucella
haematophilum
NM-4,
cereus
NM-6)
significantly
improved
seedling
vigor
index
(1009.2-1100)
as
compared
non-inoculated
stressed
plants
(630-957).
Through
rhizoscanning,
efficiency
was
validated
root
parameters
such
length
(17%),
diameter,
surface
area
(18%)
all
tested
genotypes
with
respective
treatments.
Furthermore,
response
inoculation
on
three
positively
correlated
ameliorating
traits
accumulation
osmoprotectant,
proline
(85.8%–122%),
relative
water
content
(51%),
membrane
stability
(64%),
antioxidant
enzymes
reduce
oxidative
damage
reactive
oxygen
species.
A
decrease
temperature
chlorophyll
inoculated
were
found
using
infrared
thermal
imaging
soil
analyzer
development
(SPAD),
respectively.
The
key
supporting
role
toward
responses
robust
techniques
like
an
gas
analyzer.
principal
component
analysis
depicts
contribution
yield
integration
genotype
(NIBGE-DT02)
potential
strains,
NM-6,
can
serve
effective
bioinoculant
cope
scarcity
current
alarming
issues
related
fluctuating
climate.
Journal of Fungi,
Год журнала:
2023,
Номер
9(3), С. 321 - 321
Опубликована: Март 5, 2023
Drought
greatly
influences
the
growth
and
ecological
stoichiometry
of
plants
in
arid
semi-arid
regions
such
as
karst
areas,
where
Cinnamomum
migao
(C.
migao)
is
an
endemic
tree
species
that
used
a
bioenergy
resource.
Arbuscular
mycorrhizal
fungi
(AMF)
play
key
role
nutrient
uptake
soil-plant
continuum,
increasing
plant
tolerance
to
drought.
However,
few
studies
have
examined
contribution
AMF
improving
C.
seedlings
soil
under
drought-stress
conditions.
A
pot
experiment
was
conducted
natural
light
plastic
greenhouse
investigate
effects
individual
inoculation
Co-inoculation
[Funneliformis
mosseae
(F.
mosseae)
Claroideoglomus
etunicatum
etunicatum)]
on
growth,
water
status,
well
well-watered
(WW)
(DS)
The
results
showed
compared
with
non-AMF
control
(CK),
AM
symbiosis
significantly
stimulated
had
higher
dry
mass.
Mycorrhizal
better
status
than
corresponding
CK
plants.
colonization
notably
increased
total
nitrogen
phosphorus
content
CK.
leaf
stem
carbon
concentrations
indicated
protects
against
drought
stress
by
uptake.
In
general,
formed
most
beneficial
effect
among
all
treatments.
future,
we
should
study
more
about
biological
characteristics
each
field
understand
responses
stress,
which
can
provide
meaningful
guidance
for
afforestation
projects
regions.
Abstract
Globally,
drought
stress
poses
a
significant
threat
to
crop
productivity.
Improving
the
tolerance
of
crops
with
microbial
biostimulants
is
sustainable
strategy
meet
growing
population’s
demands.
This
research
aimed
elucidate
biostimulants’
(Plant
Growth
Promoting
Rhizobacteria)
role
in
alleviating
oil-seed
crops.
In
total,
15
bacterial
isolates
were
selected
for
and
screened
plant
growth-promoting
(PGP)
attributes
like
phosphate
solubilization
production
indole-3-acetic
acid,
siderophore,
hydrogen
cyanide,
ammonia,
exopolysaccharide.
describes
two
PGPR
strains:
Acinetobacter
calcoaceticus
AC06
Bacillus
amyloliquefaciens
BA01.
The
present
study
demonstrated
that
these
strains
(AC06
BA01)
produced
abundant
osmolytes
under
osmotic
stress,
including
proline
(2.21
1.75
µg
ml
−
1
),
salicylic
acid
(18.59
14.21
trehalose
(28.35
22.74
mg
FW)
glycine
betaine
(11.35
7.74
g
)
respectively.
BA01
further
evaluated
their
multifunctional
performance
by
inoculating
Arachis
hypogaea
L.
(Groundnut)
mild
severe
regimes
(60
40%
Field
Capacity).
Inoculation
displayed
distinct
osmotic-adjustment
abilities
groundnut,
such
as
growth
parameters,
biomass,
photosynthetic
pigments,
relative
water
content,
proline,
soluble
sugar
respective
control
during
drought.
On
other
hand,
sensitivity
indexes
electrolyte
leakage
malondialdehyde
(MDA)
contents
decreased
well
cooperatively
conferred
induced
alterations
indicators
catalase
(CAT),
ascorbate
peroxidase
(APX),
superoxide
dismutase
(SOD).
Thus,
sp.
can
be
considered
osmolyte
producing
simultaneously
induce
metabolic
changes
groundnuts
stress.
Journal of Plant Growth Regulation,
Год журнала:
2024,
Номер
43(6), С. 1814 - 1832
Опубликована: Янв. 28, 2024
Abstract
Biochar
(BC)
and
plant
growth-promoting
microbes
(PGPR)
could
represent
a
suitable
agronomical
strategy
to
mitigate
the
impacts
of
drought
in
arid
agro-environmental
conditions.
However,
there
is
currently
little
understanding
synergistic
benefit
combining
BC
PGPR
increase
tolerance
oilseeds.
In
this
study,
physiological
response
two
water-stressed
canola
(
Brassica
napus
L.)
plants
subjected
application
obtained
from
waste
wood
Morus
alba
applied
solely
or
combination
with
strains
Pseudomonas
sp.)
was
evaluated.
The
experiment
consists
genotypes
nine
treatments
[(C-Control,
T1-15
days
(15DD),
T2-30
(30DD),
T3-15
+
PG
(15DD
PG),
T4-30
(30DD
T5-15
biochar
BC),
T6-30
T7-15
T8-30
PG)].
Drought
stress
decreased
emergence
energy
(EE),
leaf
area
index
(LAI),
ratio
(LAR),
root
shoot
(RSR),
moisture
content
leaves
(MCL),
percent
(%MC),
(MCS)
(MCR),
relative
water
(RWC)
both
varieties
L.,
which
contrast,
it
increased
by
collective
PGPR.
varieties,
N,
P,
K,
Mg,
Ca
concentrations
were
highest
all
PGPRs
separate
combined
treatments,
while
lowest
15
30
treatments.
Osmolyte
contents
like
Glycine
betaine
(GB)
sugar
remarkably
condition
then
reduced
due
has
repressive
effect
on
antioxidant
enzymatic
system
Peroxidase
(POD),
Superoxide
dismutase
(SOD),
glutathione
reductase
(GR)
as
well
total
flavonoids,
phenolics,
protein
content.
enzymes
phenolic
compounds
dramatically
action
PGPRs.
A
significant
EE,
LAR,
RSR,
RWC
under
conditions,
evidently
highlighting
results
conclude
substantial
positive
use
canola's
induced
stress,
regulating
physiological,
biochemical,
agronomic
traits
plants.
Graphical