Plants,
Journal Year:
2023,
Volume and Issue:
12(20), P. 3586 - 3586
Published: Oct. 16, 2023
Brassinosteroids
(BRs)
are
key
phytohormones
involved
in
the
regulation
of
major
processes
cell
metabolism
that
guide
plant
growth.
In
past
decades,
new
evidence
has
made
it
clear
BRs
also
play
a
role
orchestration
responses
to
many
abiotic
and
biotic
stresses.
present
work,
we
analyzed
impact
foliar
treatment
with
24-epicastasterone
(ECS)
on
endogenous
content
(auxins,
salicylic
acid,
jasmonic
abscisic
acid)
their
intermediates
soybean
leaves
7
days
following
treatment.
Changes
have
been
identified
quantified
by
LC/MS.
The
obtained
results
point
ECS
upregulation
auxin
(indole-3-acetic
IAA)
downregulation
salicylic,
jasmonic,
acid
levels.
These
data
confirm
under
optimal
conditions,
tested
concentrations
0.25
µM
1
might
promote
growth
soybeans
inducing
contents.
Benzoic
(a
precursor
(SA)),
but
not
SA
itself,
highly
accumulated
treatment,
which
indicates
an
activation
adaptation
strategies
possible
environmental
challenges.
Genes,
Journal Year:
2021,
Volume and Issue:
12(10), P. 1635 - 1635
Published: Oct. 18, 2021
Bud
dormancy
is
an
evolved
trait
that
confers
adaptation
to
harsh
environments,
and
affects
flower
differentiation,
crop
yield
vegetative
growth
in
perennials.
ABA
a
stress
hormone
major
regulator
of
dormancy.
Although
the
physiology
bud
complex,
several
advancements
have
been
achieved
this
field
recently
by
using
genetics,
omics
bioinformatics
methods.
Here,
we
review
current
knowledge
on
role
environmental
signals,
as
well
interplay
other
hormones
sucrose,
regulation
process.
We
also
discuss
emerging
potential
mechanisms
physiological
process,
including
epigenetic
regulation.
Frontiers in Plant Science,
Journal Year:
2023,
Volume and Issue:
14
Published: March 30, 2023
Dormancy
and
heteromorphism
are
innate
seed
properties
that
control
germination
timing
through
adaptation
to
the
prevailing
environment.
The
degree
of
variation
in
dormancy
depth
within
a
population
differs
considerably
depending
on
genotype
maternal
is
therefore
key
trait
annual
weeds
time
seedling
emergence
across
seasons.
Seed
heteromorphism,
production
distinct
morphs
(in
color,
mass
or
other
morphological
characteristics)
same
individual
plant,
considered
be
bet-hedging
strategy
unpredictable
environments.
Heteromorphic
species
evolved
independently
several
plant
families
provide
an
additional
variation.
Here
we
conducted
comparative
molecular
analysis
dimorphic
seeds
(black
brown)
Amaranthaceae
weed
Chenopodium
album.
Freshly
harvested
black
brown
differed
their
responses
ambient
temperature.
morph
seedlot
#1
was
dormant
2/3rd
had
non-deep
physiological
which
released
by
after-ripening
(AR)
gibberellin
(GA)
treatment.
deeper
remaining
1/3rd
non-germinating
required
addition
ethylene
nitrate
for
its
release.
#2
both
seedlots
were
non-dormant
with
germinating
fresh
mature
state.
testa
(outer
coat)
thickness
thick
testas
conferred
coat-imposed
dormancy.
abscisic
acid
(ABA)
GA
contents
dry
state
during
imbibition
biosynthesis
highest
ABA
degradation
faster
#2.
genes
metabolism
identified
transcript
expression
patterns
quantified
imbibed
C.
album
seeds.
Phylogenetic
analyses
sequences
revealed
high
proportion
expanded
gene
genus.
hormonal,
mechanisms
compared
discussed
as
adaptations
variable
stressful
International Journal of Molecular Sciences,
Journal Year:
2022,
Volume and Issue:
23(4), P. 2186 - 2186
Published: Feb. 16, 2022
Seed
dormancy
transition
is
a
vital
developmental
process
for
seedling
propagation
and
agricultural
production.
The
precisely
regulated
by
diverse
endogenous
genetic
factors
environmental
cues.
Callery
pear
(Pyrus
calleryana
Decne)
an
important
rootstock
species
that
requires
cold
stratification
to
break
seed
dormancy,
but
the
mechanisms
underlying
release
are
not
yet
fully
understood.
Here,
we
analyzed
transcriptome
profiles
at
three
different
stages
of
in
callery
seeds
using
RNA
sequencing
combined
with
phytohormone
sugar
content
measurements.
Significant
alterations
hormone
contents
carbohydrate
metabolism
were
observed
reflected
status
seeds.
expressions
genes
related
plant
signaling
transduction,
including
indole-3-acetic
acid
(IAA)
biosynthesis
(ASAs,
TSA,
NITs,
YUC,
AAO)
as
well
several
abscisic
(ABA)
gibberellic
(GA)
catabolism
transduction
(CYP707As,
GA2ox,
DELLAs),
consistent
changes.
We
further
found
involved
cytokinin
(CTK),
ethylene
(ETH),
brassionolide
(BR),
jasmonic
(JA)
differentially
expressed
integrated
release.
In
accordance
changes
starch
soluble
contents,
associated
sucrose
significantly
up-regulated
during
progression.
Furthermore,
expression
levels
lipid
pathways
also
up-regulated.
Finally,
447
transcription
factor
(TF)
(including
ERF,
bHLH,
bZIP,
NAC,
WRKY,
MYB
genes)
be
might
relate
Our
results
suggest
mechanism
complex,
transcriptionally
involving
hormones,
sugars,
lipids,
TFs.
Annals of Botany,
Journal Year:
2024,
Volume and Issue:
134(5), P. 701 - 710
Published: June 22, 2024
Abstract
Background
The
evolutionary
success
of
flowering
plants
is
associated
with
the
vast
diversity
their
reproductive
structures.
Despite
recent
progress
in
understanding
angiosperm-wide
trends
floral
structure
and
evolution,
a
synthetic
view
seed
form
function
across
angiosperms
lacking.
Scope
Here
we
present
roadmap
to
synthesize
forms
extant
angiosperms,
relying
on
morphospace
concept,
i.e.
mathematical
representation
which
relates
multiple
traits
describes
realized
morphologies.
We
provide
recommendations
how
broaden
range
measurable
beyond
mass,
by
using
key
morphological
representative
embryo,
endosperm
coat
but
also
fruit
attributes
(e.g.
dehiscence,
fleshiness).
These
were
used
construct
analyse
detect
gain
insight
into
relate
functions.
Finally,
outline
challenges
future
research
directions,
combining
macroevolutionary
comparative
methods
underline
drivers
that
gave
rise
observed
forms.
Conclusions
conclude
this
multidimensional
approach
has
potential,
although
still
untapped,
improve
our
covariation
among
traits,
further
elucidate
angiosperm
biology
as
whole.
Fritillaria
taipaiensis
P.
Y.
Li
is
the
most
suitable
species
planted
at
low
altitudes
among
other
used
as
Tendrilleaf
Fritillary
Bulb,
whose
seeds
embracing
morphological
and
physiological
dormancy
need
to
experience
a
long-dormant
time
from
sowing
germination.
In
this
study,
developmental
changes
of
F.
during
period
were
observed
by
anatomical
observation,
cause
long-term
was
discussed
perspective
embryonic
development.
The
process
organogenesis
revealed
stage
paraffin
section.
effects
testa,
endosperm
temperature
on
dormant
discussed.
Furthermore,
we
found
that
mainly
reason
caused
dormancy,
which
accounted
for
86%
seed
development
time.
differentiation
globular
or
pear-shaped
embryo
into
short-rod
longer,
one
chief
reasons
played
an
important
role
in
formation.
Testa
with
mechanical
constraint
inhibitors
involved
seeds.
taipaiensis,
average
ambient
6-12°C
11-22°C
unsuitable
growth.
Therefore,
suggested
could
be
shortened
shortening
proembryo
stratification
different
stages
dormancy.The
organ-building
rod
dormancy.Morphological
after-ripening
main
taipaiensis.The
Morphological
long
Polygonatum
sibiricum
Red,
known
as
Huangjing
in
Chinese,
is
a
perennial
plant
valued
traditional
Chinese
medicine
and
nutritional
food
ingredient.
With
increasing
market
demand
outpacing
wild
resource
availability,
cultivation
has
become
essential
for
sustainable
production.
However,
the
of
P.
challenged
by
double
dormancy
characteristics
seeds,
which
include
embryo
physiological
dormancy.
This
affected
germination
seeds
establishment
seedlings.
study
investigates
role
hormones
breaking
seed
regulating
emergence
sibiricum.
We
found
that
cold
stratification
at
4°C
over
70
d
significantly
alleviates
dormancy,
associated
with
changes
endogenous
hormone
levels.
Auxin,
gibberellin,
abscisic
acid,
cytokinin,
salicylic
jasmonic
ethylene
were
identified
key
players
these
processes.
Exogenous
applications
GA3
2-coumarate
(2-hydroxycinnamic
acid)
enhanced
germination,
while
6-BA
promoted
corm
growth
development.
In
conclusion,
our
research
provides
insights
into
hormonal
regulation
sibiricum,
offering
valuable
strategies
improving
practices.
Further
studies
are
needed
to
explore
specific
mechanisms
interactions
develop
optimized
seedling
this
medicinally
important
plant.