Genes,
Journal Year:
2024,
Volume and Issue:
15(12), P. 1644 - 1644
Published: Dec. 21, 2024
Background:
Mirabilis
himalaica,
distributed
in
the
high-altitude,
arid,
and
semi-arid
regions
of
Xizang,
exhibits
great
tolerance
to
drought,
which
is
rich
rotenoids
other
secondary
metabolites.
It
still
unknown,
though,
how
drought
stress
influences
rotenoid
synthesis
M.
himalaica.
Methods:
In
this
study,
calli
himalaica
were
subjected
5%
PEG6000
for
0,
20,
40
h
divided
into
control
group
(CK),
mild-drought-treated
(M),
high-drought-treated
(H),
respectively.
We
then
analyzed
relative
content
three
main
using
high-performance
liquid
chromatography–electrospray
ionization–tandem
mass
spectrometry
(HPLC-ESI-MS/MS).
Results:
Our
findings
demonstrated
that
was
significantly
reduced
under
stress.
Transcriptome
analysis
subsequently
revealed
14,525
differentially
expressed
genes
(DEGs)
between
different
treatments.
Furthermore,
these
DEGs
exhibited
enrichment
pathways
associated
with
isoflavone
biosynthesis
hormone
signaling
pathways.
Key
decreased
expression
patterns
during
also
found
be
involved
accumulation
drought-responsive
phytohormone
signaling,
including
abscisic
acid
(ABA),
auxin
(IAA),
jasmonic
(JA).
Conclusions:
These
elucidate
molecular
processes
resistance
shed
light
on
relationship
production
Journal of Agricultural and Food Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 10, 2024
Abscisic
acid
(ABA),
a
phytohormone,
and
its
analogs
have
been
found
to
enhance
plant
resistance
various
biotic
abiotic
stresses,
particularly
drought,
by
activating
the
ABA
signaling
pathway.
This
study
used
combination
of
structure-directed
design
molecular
docking
screening
methods
synthesize
novel
series
opabactin
(OP)
analogs.
Among
them,
compounds
Physiologia Plantarum,
Journal Year:
2024,
Volume and Issue:
176(4)
Published: July 1, 2024
Plants
have,
throughout
evolution,
developed
a
hydrophobic
cuticle
to
protect
them
from
various
stresses
in
the
terrestrial
environment.
The
layer
is
mainly
composed
of
cutin
and
cuticular
wax,
mixture
very-long-chain
fatty
acids
their
derivatives.
With
progress
transcriptome
sequencing
other
research
methods,
key
enzymes,
transporters
regulatory
factors
wax
synthesis
metabolism
have
been
gradually
identified,
especially
study
on
regulation
by
transcription
others
response
plant
stress
has
become
hot
topic.
Drought
major
abiotic
that
limits
growth
crop
productivity.
Plant
epidermal
prevents
non-stomatal
water
loss
improves
use
efficiency
adapt
arid
environments.
In
this
study,
ways
synthesis,
transport,
at
different
levels
are
reviewed.
At
same
time,
hormones
drought
elaborated,
questions
important
directions
for
future
solutions
proposed
enhance
potential
application
agriculture
Tree Physiology,
Journal Year:
2024,
Volume and Issue:
44(9)
Published: Aug. 20, 2024
Drought
is
a
significant
global
issue
affecting
agricultural
production,
and
the
utilization
of
beneficial
rhizosphere
microorganisms
one
effective
ways
to
increase
productivity
crops
forest
under
drought.
In
this
study,
we
characterized
novel
growth-promoting
dark
septate
endophytes
(DSE)
fungus
R16
(Dothideomycetes
sp.)
derived
from
blueberry
roots.
Hyphae
or
microsclerotia
were
visible
within
epidermal
cortical
cells
R16-colonized
roots,
which
was
consistent
with
typical
characteristics
DSE
fungi.
Inoculation
promoted
growth
seedlings,
advantage
over
control
group
more
PEG-induced
Comparison
physiological
indicators
related
drought
resistance
between
inoculated
groups
performed
on
potted
plants,
including
chlorophyll
content,
net
photosynthetic
rate,
root
activities,
malondialdehyde
H2O2
indicated
that
colonization
mitigated
injury
in
plants.
We
further
analyzed
effects
phytohormones
non-structural
carbohydrates
(NSCs)
explore
mechanism
increased
tolerance
by
seedlings.
The
results
showed
except
for
gibberellin
indole-3-acetic
acid,
zeatin
abscisic
acid
varied
significantly
groups.
Sucrose
phosphate
synthase
sorbitol-6-phosphate
dehydrogenase
activities
mature
leaves,
key
enzymes
responsible
sucrose
sorbitol
synthesis,
respectively,
as
well
dehydrogenase,
synthase,
cell
wall
invertase,
hexokinase
fructokinase
involved
NSCs
metabolism,
differences
before
after
treatment.
These
suggested
positive
seedlings
are
partially
attributable
regulation
phytohormone
sugar
metabolism.
This
study
provided
valuable
information
research
interaction
fungi
host
plants
application
preparations
agriculture.
Agronomy,
Journal Year:
2024,
Volume and Issue:
14(4), P. 704 - 704
Published: March 28, 2024
Drought
stress,
a
major
abiotic
significantly
affects
wheat
(Triticum
aestivum
L.)
production
globally.
To
identify
genes
and
metabolic
pathways
crucial
for
responding
to
short-term
drought
we
conducted
transcriptomic
metabolomic
analyses
of
winter
cultivar
Jimai
418
at
four
developmental
stages:
jointing
(GS31),
booting
(GS45),
anthesis
(GS65),
8
days
after
(DAA8).
Transcriptomic
analysis
identified
14,232
differentially
expressed
(DEGs)
under
stress
compared
the
control.
Specifically,
1387,
4573,
7380,
892
DEGs
were
stages,
respectively.
Enriched
associated
with
these
included
plant
hormone
signal
transduction,
mitogen-activated
protein
kinase
(MAPK)
signaling,
galactose
metabolism,
starch
sucrose
metabolism.
Totals
222,
633,
358,
38
accumulated
metabolites
(DAMs)
Correlation
both
datasets
revealed
DAMs
arginine
proline
ABC
transporters,
amino
acid
biosynthesis.
These
findings
offer
significant
insights
into
418’s
molecular
response
stress.
The
DEGs,
DAMs,
enriched
contribute
our
understanding
tolerance.
This
research
will
facilitate
further
investigations
tolerance
mechanisms
guide
breeding
varieties
enhanced
resistance.
Applied Microbiology and Biotechnology,
Journal Year:
2024,
Volume and Issue:
108(1)
Published: Dec. 1, 2024
Azospirillum
argentinense
Az19
is
an
osmotolerant
plant
growth-promoting
bacterium
that
protects
maize
plants
from
drought.
In
this
work,
we
explored
the
role
of
trehalose
in
superior
performance
under
stress.
The
trehalase-coding
gene
treF
was
constitutively
expressed
through
a
miniTn7
system.
resulting
recombinant
strain,
Az19F,
did
not
accumulate
trehalose,
affected
its
capacity
to
cope
with
salt-,
osmotic-,
and
UV-stress,
showed
higher
reactive
oxygen
species
levels.
Physiological
alterations
were
also
observed
normal
conditions,
such
as
increased
growth
biofilms,
motility,
decreased
auxin
secretion.
Even
so,
Az19F
colonize
roots
affected,
either
or
drought
conditions.
When
inoculated
maize,
both
strains
promoted
similarly
irrigation.
However,
unlike
Az19,
trehalose-deficient
strain
could
improve
height,
aerial
fresh
weight,
relative
water
content
Notably,
triggered
exacerbated
oxidative
response
plants,
levels
antioxidant
phenolic
compounds.
We
conclude
metabolism
A.
transcends
stress
tolerance,
being
important
for
bacterial
physiology
activity
KEY
POINTS:
•
Trehalose
required
by
full
tolerance
UV-stress.
A
restriction
accumulation
alters
cell
physiology.
contributes
Az19-induced
promotion
New Phytologist,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 17, 2024
Droughts
of
increasing
severity
and
frequency
are
a
primary
cause
forest
mortality
associated
with
climate
change.
Yet,
fundamental
knowledge
gaps
regarding
the
complex
physiology
trees
limit
development
more
effective
management
strategies
to
mitigate
drought
effects
on
forests.
Here,
we
highlight
some
basic
research
needed
better
understand
tree
how
new
technologies
interdisciplinary
approaches
can
be
used
address
them.
Our
discussion
focuses
change
wood
water
stress,
hormonal
responses
drought,
genetic
variation
underlying
adaptive
phenotypes,
'remember'
prior
stress
exposure,
symbiotic
soil
microbes
affect
response.
Next,
identify
opportunities
for
using
findings
enhance
or
develop
managing
forests,
ranging
from
matching
genotypes
environments,
enhancing
seedling
resilience
through
nursery
treatments,
landscape-scale
monitoring
predictions.
We
conclude
need
co-producing
land
managers
extending
forests
in
critical
ecological
regions
beyond
temperate
zone.
Genes,
Journal Year:
2024,
Volume and Issue:
15(12), P. 1644 - 1644
Published: Dec. 21, 2024
Background:
Mirabilis
himalaica,
distributed
in
the
high-altitude,
arid,
and
semi-arid
regions
of
Xizang,
exhibits
great
tolerance
to
drought,
which
is
rich
rotenoids
other
secondary
metabolites.
It
still
unknown,
though,
how
drought
stress
influences
rotenoid
synthesis
M.
himalaica.
Methods:
In
this
study,
calli
himalaica
were
subjected
5%
PEG6000
for
0,
20,
40
h
divided
into
control
group
(CK),
mild-drought-treated
(M),
high-drought-treated
(H),
respectively.
We
then
analyzed
relative
content
three
main
using
high-performance
liquid
chromatography–electrospray
ionization–tandem
mass
spectrometry
(HPLC-ESI-MS/MS).
Results:
Our
findings
demonstrated
that
was
significantly
reduced
under
stress.
Transcriptome
analysis
subsequently
revealed
14,525
differentially
expressed
genes
(DEGs)
between
different
treatments.
Furthermore,
these
DEGs
exhibited
enrichment
pathways
associated
with
isoflavone
biosynthesis
hormone
signaling
pathways.
Key
decreased
expression
patterns
during
also
found
be
involved
accumulation
drought-responsive
phytohormone
signaling,
including
abscisic
acid
(ABA),
auxin
(IAA),
jasmonic
(JA).
Conclusions:
These
elucidate
molecular
processes
resistance
shed
light
on
relationship
production
