Journal of Experimental Botany,
Год журнала:
2024,
Номер
75(14), С. 4180 - 4194
Опубликована: Март 8, 2024
The
timing
of
the
developmental
transition
from
vegetative
to
reproductive
stage
is
critical
for
angiosperms,
and
fine-tuned
by
integration
endogenous
factors
external
environmental
cues
ensure
successful
reproduction.
Plants
have
evolved
sophisticated
mechanisms
response
diverse
or
stress
signals,
these
can
be
mediated
hormones
coordinate
flowering
time.
Phytohormones
such
as
gibberellin,
auxin,
cytokinin,
jasmonate,
abscisic
acid,
ethylene,
brassinosteroids
cross-talk
among
them
are
precise
regulation
Recent
studies
model
plant
Arabidopsis
revealed
that
transcription
epigenetic
regulators
play
key
roles
in
relation
phytohormones
regulate
floral
transition.
This
review
aims
summarize
our
current
knowledge
genetic
underlie
phytohormonal
control
Arabidopsis,
offering
insights
into
how
processes
regulated
their
implications
biology.
Plant Communications,
Год журнала:
2022,
Номер
4(2), С. 100468 - 100468
Опубликована: Окт. 28, 2022
Cytokinins
(CKs),
primarily
trans-zeatin
(tZ)
and
isopentenyladenine
(iP)
types,
play
critical
roles
in
plant
growth,
development,
various
stress
responses.
Long-distance
transport
of
tZ-type
CKs
meidated
by
Arabidopsis
ATP-binding
cassette
transporter
subfamily
G14
(AtABCG14)
has
been
well
studied;
however,
less
is
known
about
the
biochemical
properties
AtABCG14
its
activity
toward
iP-type
CKs.
Here
we
reveal
provide
evidence
that
it
also
required
for
long-distance
formed
homodimers
human
(Homo
sapiens)
HEK293T,
tobacco
(Nicotiana
tabacum),
cells.
Transporter
assays
Arabidopsis,
tobacco,
yeast
(Saccharomyces
cerevisiae)
showed
may
directly
multiple
CKs,
including
iP-
species.
expression
was
induced
iP
a
CK-deficient
double
mutant
(cypDM)
CYP735A1
CYP735A2.
The
atabcg14
cypDM
triple
exhibited
stronger
CK-deficiency
phenotypes
than
cypDM.
Hormone
profiling,
reciprocal
grafting,
2H6-iP
isotope
tracer
experiments
root-to-shoot
shoot-to-root
were
suppressed
atabcg14.
These
results
suggest
participates
three
steps
circular
CKs:
xylem
loading
root
shootward
transport,
phloem
unloading
shoot
distribution,
distribution.
We
found
displays
CK
species
revealed
versatile
findings
new
insights
into
mechanisms
other
hormones.
Abstract
Background
The
mechanisms
of
abscisic
acid
(ABA)
and
auxin
(IAA)
in
inducing
adventitious
root
(AR)
formation,
biomass
accumulation,
plant
development
under
long-term
waterlogging
(LT-WL)
conditions
are
largely
unexplored.
This
study
aimed
to
determine
the
roles
exogenous
application
ABA
IAA
two
woody
plants
(
Cleistocalyx
operculatus
Syzygium
jambos
)
LT-WL
conditions.
A
pot
experiment
was
conducted
using
a
complete
randomized
design
with
factors:
(i)
(ii)
phytohormones
(ABA
IAA)
for
120
d.
Results
revealed
that
promoted
tolerance
both
species.
In
C.
S.
,
height,
number
blades,
leaf
area,
fresh
shoot
weight
were
increased
by
LT-WL.
However,
affected
more
primary
compared
.
decreased
drastically
photosynthetic
activities
species,
but
adding
moderate
amounts
or
protected
photosynthesis
apparatus
Exogenous
at
certain
levels
superoxide
anion
level
malondialdehyde
accumulation
Also,
increase
peroxidases
dismutase
marked
Meanwhile,
catalase
activity
down-regulated
species
phytohormones.
positively
regulated
jasmonic
content
ARs
Moderate
leaves.
Lower
leaves
correlated
decrease
antioxidant
activity.
Conclusions
Lastly,
which
has
greater
morphology
indexes
tolerant
than
Moreover,
adaptive
strategies
via
built
around
below-ground
particularly
while
backed
above-ground
Overall,
hormones
applied
(spraying
watering)
influenced
differentially
plant’s
responses
phytohormonal
profile
exposed
stress
varied
depending
on
species’
level.
Plants,
Год журнала:
2024,
Номер
13(5), С. 564 - 564
Опубликована: Фев. 20, 2024
Artemisia
argyi
is
a
traditional
herbal
medicine
plant,
and
its
folium
artemisia
widely
in
demand
due
to
moxibustion
applications
globally.
The
Auxin/indole-3-acetic
acid
(Aux/IAA,
or
IAA)
gene
family
has
critical
roles
the
primary
auxin-response
process,
with
extensive
involvement
plant
development
stresses,
controlling
various
essential
traits
of
plants.
However,
systematic
investigation
Aux/IAA
A.
remains
limited.
In
this
study,
total
61
genes
were
comprehensively
identified
characterized.
Gene
structural
analysis
indicated
that
46
proteins
contain
four
typical
domains,
15
belong
non-canonical
IAA
proteins.
Collinear
prediction
phylogenetic
relationship
analyses
suggested
grouped
into
13
distinct
categories,
most
might
experience
loss
during
tandem
duplication
process.
Promoter
cis-element
promoters
variety
hormone
response
stress
cis-elements.
Protein
interaction
demonstrated
AaIAA26/29/7/34
are
possibly
core
members
interaction.
Expression
roots
leaves
via
RNA-seq
data
expression
some
AaIAAs
exhibited
tissue-specific
patterns,
involved
regulation
salt
saline-alkali
stresses.
addition,
RT-qPCR
results
AaIAA
have
differential
responses
auxin,
complex
patterns
other
hormones,
indicating
may
play
role
connecting
auxin
signaling
pathways.
Overall,
these
findings
shed
more
light
on
offer
foundational
knowledge
toward
elucidation
their
function
growth,
response,
networking
argyi.
Journal of Experimental Botany,
Год журнала:
2024,
Номер
75(14), С. 4180 - 4194
Опубликована: Март 8, 2024
The
timing
of
the
developmental
transition
from
vegetative
to
reproductive
stage
is
critical
for
angiosperms,
and
fine-tuned
by
integration
endogenous
factors
external
environmental
cues
ensure
successful
reproduction.
Plants
have
evolved
sophisticated
mechanisms
response
diverse
or
stress
signals,
these
can
be
mediated
hormones
coordinate
flowering
time.
Phytohormones
such
as
gibberellin,
auxin,
cytokinin,
jasmonate,
abscisic
acid,
ethylene,
brassinosteroids
cross-talk
among
them
are
precise
regulation
Recent
studies
model
plant
Arabidopsis
revealed
that
transcription
epigenetic
regulators
play
key
roles
in
relation
phytohormones
regulate
floral
transition.
This
review
aims
summarize
our
current
knowledge
genetic
underlie
phytohormonal
control
Arabidopsis,
offering
insights
into
how
processes
regulated
their
implications
biology.
