International Journal of Molecular Sciences,
Год журнала:
2023,
Номер
24(18), С. 14238 - 14238
Опубликована: Сен. 18, 2023
Basic
leucine
zipper
(bZIP)
transcription
factors
play
significant
roles
in
plants’
growth
and
development
processes,
as
well
response
to
biological
abiotic
stresses.
Hypericum
perforatum
is
one
of
the
world’s
top
three
best-selling
herbal
medicines,
mainly
used
treat
depression.
However,
there
has
been
no
systematic
identification
or
functional
analysis
bZIP
gene
family
H.
perforatum.
In
this
study,
79
HpbZIP
genes
were
identified.
Based
on
phylogenetic
analysis,
was
divided
into
ten
groups,
designated
A–I
S.
The
physicochemical
properties,
structures,
protein
conserved
motifs,
Gene
Ontology
enrichments
all
HpbZIPs
systematically
analyzed.
expression
patterns
different
tissues
(i.e.,
root,
stem,
leaf,
flower)
analyzed
by
qRT-PCR,
revealing
under
HpbZIP69
localized
nucleus.
According
results
yeast
one-hybrid
(Y1H)
assays,
can
bind
HpASMT2
(N-acetylserotonin
O-methyltransferase)
promoter
(G-box
cis-element)
activate
its
activity.
Overexpressing
Arabidopsis
wild-type
lines
enhanced
their
tolerance
drought.
MDA
H2O2
contents
significantly
decreased,
activity
superoxide
dismutase
(SOD)
considerably
increased
drought
stress.
These
may
aid
additional
studies
factors,
cultivating
drought-resistant
medicinal
plants.
Journal of Experimental Botany,
Год журнала:
2023,
Номер
75(3), С. 1016 - 1035
Опубликована: Окт. 5, 2023
Abstract
Drought
stress
poses
a
serious
threat
to
grain
formation
in
wheat.
Nitrogen
(N)
plays
crucial
roles
plant
organ
development;
however,
the
physiological
mechanisms
by
which
drought
affects
N
availability
and
mediates
of
grains
spikes
winter
wheat
are
still
unclear.
In
this
study,
we
determined
that
pre-reproductive
significantly
reduced
number
fertile
florets
formed.
Transcriptome
analysis
demonstrated
was
related
metabolism,
particular,
metabolism
pathways
arginine
(the
main
precursor
for
synthesis
polyamine)
proline.
Continuous
restricted
accumulation
reallocation
rates,
plants
preferentially
allocated
more
spike
development.
As
activities
amino
acid
biosynthesis
enzymes
catabolic
were
inhibited,
free
acids
accumulated
young
spikes.
The
expression
polyamine
synthase
genes
down-regulated
under
stress,
whilst
encoding
enhanced,
resulting
reductions
endogenous
spermidine
putrescine.
Treatment
with
exogenous
optimized
allocation
leaves,
greatly
alleviated
drought-induced
reduction
per
spike.
Overall,
our
results
show
numbers
regulating
redistribution
metabolism.
Frontiers in Plant Science,
Год журнала:
2023,
Номер
14
Опубликована: Сен. 5, 2023
The
growth
of
yield
outputs
is
dwindling
after
the
first
green
revolution,
which
cannot
meet
demand
for
projected
population
increase
by
mid-century,
especially
with
constant
threat
from
extreme
climates.
Cereal
requires
carbon
(C)
assimilation
in
source
subsequent
allocation
and
utilization
sink.
However,
whether
or
sink
limits
improvement,
a
crucial
question
strategic
orientation
future
breeding
cultivation,
still
under
debate.
To
narrow
knowledge
gap
capture
progress,
we
focus
on
maize,
rice,
wheat
briefly
reviewing
recent
advances
improvement
modulation
i)
leaf
photosynthesis;
ii)
primary
C
allocation,
phloem
loading,
unloading;
iii)
grain
storage;
iv)
systemic
sugar
signals
(e.g.,
trehalose
6-phosphate).
We
highlight
strategies
optimizing
to
coordinate
source-sink
relationships
promote
yields.
Finally,
based
understanding
these
physiological
mechanisms,
envisage
scenery
"smart
crop"
consisting
flexible
coordination
plant
economy,
goal
resilience
field
cereals
crops.
Agricultural Water Management,
Год журнала:
2024,
Номер
292, С. 108675 - 108675
Опубликована: Янв. 18, 2024
This
study
was
conducted
to
investigate
the
mechanisms
of
assimilate
distribution
and
sugar
metabolism
in
spike-stem
that
inhibit
formation
fertile
florets
grains
per
spike
winter
wheat
under
pre-reproductive
drought
stress.
Two
cultivars,
CH58
(relatively
strongly
tolerant)
LH6
weakly
tolerant),
were
subjected
successive
soil
treatments
from
jointing
heading
during
2020–2022
growing
seasons.
The
results
showed
stress
intensified
degradation
abortion
florets.
Compared
CH58,
decrease
number
increased
by
an
average
5.3%−8.0%
8.3%−9.0%,
respectively.
Drought
significantly
inhibited
13C-photosynthates
spikes
(15.7%−24.7%)
stems
(8.5%−11.7%)
booting
stage.
differentially
expressed
genes
enriched
starch
sucrose
metabolic
pathways
much
higher
stem
than
those
CH58.
reduced
hexose
young
but
fructan
concentrations
stems.
LH6,
invertase
activity
accompanying
high
expression
transporter
protein
(STP)
contributed
utilization
spikes.
Additionally,
severe
drought,
concentration
transport
proteins
(SWEET
SUT)
improved
ability
assimilates
thus
alleviated
loss
grain
spike.
Exogenous
spermidine
optimized
allocation
after
stress,
thereby
increasing
Overall,
dominant
utilize
compete
for
between
contribute
resistance
stress-induced
reduction
chemicals
can
regulate
through
this
pathway,
promoting
number.
Agronomy,
Год журнала:
2024,
Номер
14(3), С. 617 - 617
Опубликована: Март 19, 2024
An
approximate
revolution
synthesis
of
magnesium
oxide
(MgO)
nanoparticles
has
been
prepared.
For
plant
growth
and
development,
MgO
is
essential.
The
effect
efficiency,
respectively,
in
seed
germination,
seedling
growth,
were
also
studied.
These
analyses
examined
maize
with
different
concentrations
parameters.
concentration
500
ppm
was
tested
extreme
results
areas
such
as
height,
protein
contents
both
in-vivo
in-vitro,
effects
shown
shoot
(12.83
±
0.5
cm)
root
(5.37
cm).
Maximum
confirmations
fixed
the
help
NPs
characterization
through
TEM,
SEM,
FTIR,
zeta
potential,
X-ray.
showed
a
significant
increase
length,
simultaneous
studies
physiological
In
effect,
vital
performance
germination
rate,
index
higher
than
control.
Moreover,
absorption
confirmed
by
UV–Vis
spectrophotometer
applied
to
leaves
roots.
It
demonstrated
that
influence
positive
potentially
can
be
used
for
plants.
may
bolster
farming
methods,
maintain
high
food
quality,
quantity,
production.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(10), С. 5518 - 5518
Опубликована: Май 18, 2024
To
explore
the
possible
novel
microRNA
(miRNA)
regulatory
pathways
in
Zhengmai
1860,
a
newly
cultivated
drought-tolerant
wheat
(Triticum
aestivum
L.)
cultivar,
miRNA
transcriptome
sequencing
of
flag
leaves
drought-sensitive
variety
Zhoumai
18,
and
drought-resistant
Bainong
207
was
performed
during
grain
filling
stage.
We
also
observed
changes
chloroplast
ultrastructure,
phytohormone
levels,
antioxidant-
photosynthesis-related
physiological
indicators
three
varieties.
The
results
showed
that
1860
had
higher
chlorophyll
contents
net
photosynthetic
rates
than
those
18
under
drought
stress
stage;
addition,
structure
more
complete.
However,
there
no
significant
difference
between
207.
MiRNA
analysis
revealed
differential
expression
miRNAs
mRNAs
exhibited
variable
specificity.
KEGG
pathway
enrichment
indicated
most
genes
were
enriched
MAPK
signaling
pathway,
plant
hormone
signal
transduction,
antennae
protein,
amino
acid
carbohydrate
metabolism.
In
cultivar
tae-miR408
targeted
to
regulate
allene
oxide
synthase
(AOS)
gene,
inhibit
its
expression,
reduce
AOS
content,
decrease
synthesis
jasmonic
(JA)
abscisic
(ABA).
this
study
suggest
could
improve
performance
by
inhibiting
involved
JA
through
conditions.
Moreover,
multiple
may
target
chlorophyll,
antioxidant
enzymes,
other
related
pathways;
thus,
it
is
provide
theoretical
basis
for
molecular
breeding.
Frontiers in Plant Science,
Год журнала:
2025,
Номер
15
Опубликована: Фев. 6, 2025
Some
peroxidases
(PRXs)
are
involved
in
abiotic
stress
response.
However,
to
the
best
of
our
knowledge,
effects
PRXs
on
agronomic
traits
including
grain
number
per
spike
(GNS),
spikelet
(SNS)
and
length
(SL)
also
largely
unknown.
In
study,
we
cloned
a
wheat
PRX
gene
TaPRX-2A
identified
its
function
controlling
GNS
by
generating
transgenic
overexpression
lines.
The
results
showed
that
displayed
lower
shorter
SL,
compared
with
wild-type
plants.
RNA-seq
analysis
indicated
alterations
various
pathways
flavonoid
biosynthesis,
lignin
phytohormone
signaling,
as
well
sucrose
starch
biosynthesis.
Co-expression
transcription
factors,
such
bHLH,
WRKY,
bZIP
may
be
regulation
genes
associated
these
pathways.
Our
findings
provide
insights
into
mechanisms
which
regulate
traits,
illustrating
potential
applicability
crop
improvement
programs.
