Journal of Agricultural and Food Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 20, 2024
Chlorogenic
acid
(CA)
is
an
abundant
plant
secondary
metabolite
with
promising
allelopathic
effects
on
weed
growth.
However,
the
molecular
targets
and
mechanism
of
action
CA
in
plants
remain
elusive.
Here,
we
report
employment
a
clickable
photoaffinity
probe
identifying
protein
Arabidopsis
seedling
proteomes.
specifically
binds
dehydroascorbate
reductase
1
(AtDHAR1),
enzyme
responsible
for
ascorbate
regeneration
plants,
by
covalent
alkylating
Cys20
within
catalytic
center,
thereby
inhibiting
its
activity.
In
vivo
application
reduced
pool
size
redox
state
ascorbate,
leading
to
H2O2
accumulation
seedlings.
agreement
these
results,
significantly
induced
upregulation
antioxidant
enzymes
downregulation
proteins
involved
water
transport
photosynthesis,
as
evidenced
quantitative
proteomics.
Taken
together,
this
study
revealed
DHAR1
functional
target
underlying
CA's
activity
which
opens
new
opportunities
development
novel
herbicides
from
naturally
existing
resources.
Abstract
Non-hydraulic
root
source
signaling
(nHRS)
is
a
unique
positive
response
to
soil
drying
in
the
regulation
of
plant
growth
and
development.
However,
it
unclear
how
nHRS
mediates
tradeoff
between
sink
at
late
stages
its
adaptive
mechanisms
primitive
wheat.
To
address
this
issue,
root-splitting
design
was
made
by
inserting
solid
partition
middle
pot
culture
induce
occurrence
using
four
wheat
cultivars
(MO1
MO4,
diploid;
DM22
DM31,
tetraploid)
as
materials.
Three
water
treatments
were
designed
1)
both
halves
watered
(CK),
2)
holistic
system
then
droughted
(FS),
3)
one-half
half
(PS).
FS
PS
compare
role
full
split
nHRS.
Leaves
samples
collected
during
booting
anthesis
stages.
The
data
indicated
that
under
treatment,
ABA
concentration
significantly
higher
than
CK,
demonstrating
induction
decreased
cytokinin
(ZR)
levels,
particularly
treatment.
Soluble
sugar
proline
accumulation
stage
compared
stage.
POD
activity
anthesis,
while
CAT
Increased
correlated
with
source-sink
relationships
metabolic
rate
(i.e.,
leaf)
connecting
other
stress
signals.
Biomass
density
showed
superior
resource
acquisition
utilization
capabilities
treatment
CK
all
plants.
Our
findings
indicate
nHRS-induced
alterations
phytohormones
their
effect
on
relations
allied
Plant Stress,
Год журнала:
2024,
Номер
13, С. 100526 - 100526
Опубликована: Июнь 28, 2024
The
WRKY
gene
family
consists
of
unique
transcription
factors
(TFs)
found
exclusively
in
plants.
These
TFs
play
a
crucial
role
regulating
how
plants
respond
to
various
abiotic
stresses,
such
as
saline-alkaline
conditions,
temperature
fluctuations,
drought,
UV
radiation
and
others.
Scientists
have
been
progressively
studying
the
roles
mechanisms
several
plant
species,
including
both
model
essential
agricultural
crops.
This
study
focus
has
emerged
due
understanding
that
alkaline
saline
soil
stressors
considerably
impede
global
productivity.
Multiple
research
efforts
underscored
significant
biological
functions
assisting
coping
with
challenges,
particularly
enhancing
their
ability
withstand
alkaline-salt
stress.
review
aims
investigate
structural
capabilities
impact
on
responses
salt
stresses.
Additionally,
it
seeks
elucidate
these
alleviating
diverse
biotic
stressors.
objective
this
is
provide
comprehensive
insights
into
current
state
field
importance
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(2), С. 618 - 618
Опубликована: Янв. 13, 2025
Drought
stress
severely
damages
wheat
growth
and
photosynthesis,
plants
at
the
grain-filling
stage
are
most
sensitive
to
drought
throughout
entire
period
of
development.
Exogenous
spraying
sodium
nitroprusside
(SNP)
can
alleviate
damage
caused
by
stress,
but
mechanism
regulating
proline
pathway
remains
unknown.
Two
cultivars,
drought-sensitive
Zhoumai
18
drought-tolerant
Zhengmai
1860,
were
used
as
materials
when
cultivated
stage.
The
results
show
that
under
SNP
pretreatment
effectively
improved
physiological
basis
photosynthesis
water
use
efficiency
two
increased
their
tolerance
photosystem
II
(PSII)
damage,
maintained
a
normal
photosynthetic
rate
yield.
induced
an
increase
in
pyrroline-5-carboxylate
synthase
(TaP5CS)
gene
transcription,
comparatively
greater
was
detected
1860.
When
treatment
applied
before
exposure,
TaP5CS
transcription
further
enhanced.
Induction
promoted
accumulation
response
osmotic
ability,
net
rate,
thereby
increasing
dry
matter
yield
traits.
In
this
study,
exogenous
regulates
genes
related
metabolism
provides
theoretical
for
establishment
cultivation
technology
using
resist
stress.
Plants,
Год журнала:
2024,
Номер
13(10), С. 1312 - 1312
Опубликована: Май 10, 2024
The
growing
issue
of
salinity
is
a
significant
threat
to
global
agriculture,
affecting
diverse
regions
worldwide.
Nitric
oxide
(NO)
serves
as
an
essential
signal
molecule
in
regulating
photosynthetic
performance
under
physiological
and
stress
conditions.
present
study
reveals
the
protective
effects
different
concentrations
(0–300
µM)
sodium
nitroprusside
(SNP,
donor
NO)
on
functions
main
complexes
within
apparatus
maize
(Zea
mays
L.
Kerala)
salt
(150
mM
NaCl).
data
showed
that
SNP
alleviates
salt-induced
oxidative
prevents
changes
fluidity
thylakoid
membranes
(Laurdan
GP)
energy
redistribution
between
two
photosystems
(77K
chlorophyll
fluorescence
ratio
F735/F685).
Chlorophyll
measurements
demonstrated
foliar
spray
with
decline
photosystem
II
(PSII)
open
reaction
centers
(qP)
improves
their
efficiency
(Φexc),
thereby
influencing
QA−
reoxidation.
also
revealed
protects
rate
constants
for
pathways
reoxidation
(k1
k2)
from
caused
by
NaCl
treatment
alone.
Additionally,
there
predominance
interaction
plastoquinone
comparison
recombination
electrons
QA
QB−
oxygen-evolving
complex
(OEC).
analysis
flash
oxygen
evolution
10%
increase
PSII
S0
state,
i.e.,
initial
S0–S1
state
distribution,
modification
Mn
cluster
OEC.
Moreover,
this
demonstrates
SNP-induced
defense
occurs
both
acceptor
sides
PSII,
leading
protection
overall
(PIABS)
efficient
electron
transfer
side
reduction
PSI
end
acceptors
(PItotal).
This
clearly
shows
optimal
at
approximately
50–63
nmoles
NO/g
FW
leaves,
corresponding
50–150
µM
SNP.
PeerJ,
Год журнала:
2024,
Номер
12, С. e17849 - e17849
Опубликована: Авг. 7, 2024
The
physiological
activity
facilitated
by
arbuscular
mycorrhizal
fungi
(AMF)
contributes
to
plants'
ability
tolerate
drought.
Nevertheless,
it
is
unclear
if
AMF
colonization
affects
the
expression
of
genes
in
host
plant
that
encode
antioxidant
enzymes
superoxide
dismutase
(SOD)
family,
which
help
alleviate
drought
stress
plants.
Here,
we
conducted
a
pot
trial
determine
whether
Horticulturae,
Год журнала:
2024,
Номер
10(4), С. 338 - 338
Опубликована: Март 29, 2024
The
grafting
technique
has
successfully
mitigated
crop
losses
from
diseases
and
stress
in
vegetable
production;
however,
Tanzania
is
very
limited.
Field
greenhouse
experiments
conducted
Tanzania’s
mainland
islands
compared
the
response
of
tomato
determinate
cv.
‘Tanya’
to
production
challenges
when
ungrafted
grafted
onto
five
rootstocks
(‘Hawaii
7796’,
‘Tengeru
1997’,
2010’,
‘R3034’,
‘Shelter’),
one
eggplant
variety
(‘EG
203’),
wild
Solanum
species
(Solanum
elaeagnifolium).
visual
symptoms
bacterial
wilt
varied
significantly
with
location
season,
ranging
8
100%,
attributed
varying
pressures
strains
Ralstonia
solanacearum
isolated
(Phylotype
I
sequevars
17,
18,
31).
‘EG203’
‘Hawaii
7796’
emerged
as
most
effective
rootstocks,
reducing
wilting
by
49.8
51.0%
improving
yield
57.2%
27.7%
on
average
across
three
locations
(Moshi,
Pemba,
Unguja)
over
two
seasons.
Combining
reduced
water
supply
resulted
an
reduction
76%,
while
also
boosting
yields
3.6
times
Arusha
Grafting
‘Shelter’
improved
38.3%
41.6%
seasons,
only
under
standard
nutrient
application
rates.
While
certain
performance,
various
sites
seasons
were
hampered
pest
pressure.
These
findings
support
grafting’s
potential
mitigate
damage
common
stresses,
emphasizing
need
for
further
research
identify
suitable
optimizing
returns
investments
plants
Tanzania.
