The Plant Cell,
Год журнала:
2024,
Номер
36(5), С. 1410 - 1428
Опубликована: Фев. 21, 2024
Abstract
The
phytohormone
auxin
is
at
times
called
the
master
regulator
of
plant
processes
and
has
been
shown
to
be
a
central
player
in
embryo
development,
establishment
polar
axis,
early
aspects
seedling
growth,
as
well
growth
organ
formation
during
later
stages
development.
Plant
Cell
key,
since
inception
journal,
developing
an
understanding
biology.
Auxin-regulated
control
accomplished
by
both
changes
levels
active
hormones
sensitivity
tissues
these
concentration
changes.
In
this
historical
review,
we
chart
research
it
progressed
key
areas
highlight
role
played
scientific
developments.
We
focus
on
auxin-responsive
genes,
transcription
factors,
reporter
constructs,
perception,
signal
transduction
processes.
Auxin
metabolism
discussed
from
development
tryptophan
auxotrophic
mutants,
molecular
biology
conjugate
hydrolysis,
indole-3-butyric
acid
transport,
steps
indole-3-acetic
biosynthesis,
catabolism,
transport.
This
progress
leads
expectation
more
comprehensive
systems
spatial
temporal
regulation
cellular
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 8, 2025
Abstract
Reactive
oxygen
species
(ROS)
have
been
implicated
repeatedly
in
multiple
signaling
processes
plants
but
the
underlying
mechanisms
and
roles
remain
enigmatic.
Here,
we
developed
live
imaging
of
apoplastic
ROS
at
root
surface.
Different
signals,
including
auxin,
extracellular
ATP
RALF1
peptide,
all
induce
cytosolic
calcium
transients
bursts.
Genetic
optogenetic
manipulations
identified
as
necessary
sufficient
for
bursts
via
activation
NADPH
oxidases
RBOHC
RBOHF.
Apoplastic
are
not
required
rather
limit
gravity-induced
bending.
Root
bending
is
sensed
by
stretch-activated
channel
MCA1
leading
to
oxidase
stretched
side.
The
resulting
production
stiffens
cell
wall
better
soil
penetration.
thus
provides
a
means
balance
tissue
flexibility
stiffness
efficiently
navigate
soil.
Journal of genetics and genomics/Journal of Genetics and Genomics,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 1, 2024
The
phytohormone
auxin
exerts
control
over
remarkable
developmental
processes
in
plants.
It
moves
from
cell
to
cell,
resulting
the
creation
of
both
extracellular
and
intracellular
auxin,
which
are
recognized
by
distinct
receptors.
These
two
signaling
systems
govern
different
responses
while
working
together
regulate
plant
development.
In
this
review,
we
outline
latest
research
advancements
unraveling
these
pathways,
encompassing
perception
transductions.
We
emphasize
interaction
between
contributes
intricate
role
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 18, 2023
Abstract
The
major
developmental
signal
in
plants,
auxin
is
perceived
by
TIR1/AFB
receptors.
It
triggers
transcriptional
reprogramming
via
well-established
canonical
mechanism
but
also
elusive
rapid,
non-transcriptional
responses.
Here
we
demonstrate
that
receptors
have,
next
to
recently
identified
adenylate
cyclase,
guanylate
cyclase
activity.
Auxin
perception
activates
independently
the
cAMP
and
cGMP
production
TIR1/AFBs
vitro
increases
levels
planta
with
a
slow
fast
dynamics,
respectively.
Exogenous
not
application
induces
rapid
cytosolic
Ca
2+
transients
root
growth
inhibition,
suggesting
TIR1/AFB-derived
mediates
This
unprecedented
combination
of
activities
hormone
receptor
provides
new
paradigm
for
how
single
can
mediate
multitude
diverse
downstream
One-Sentence
Summary
have
activity,
whose
product,
Journal of Experimental Botany,
Год журнала:
2024,
Номер
75(18), С. 5471 - 5476
Опубликована: Май 23, 2024
Abstract
The
TIR1/AFB–Aux/IAA–ARF
canonical
auxin
signaling
pathway
is
widely
accepted
to
(de)active
transcriptional
regulation,
thus
controlling
auxin-associated
developmental
processes.
However,
the
theme
of
a
rapid
response
has
emerged
since
2018
Auxins
and
Cytokinin
in
Plant
Development
conference.
To
date,
few
components
have
been
identified
mediate
both
slow
responses,
which
unveils
complexity
signaling.
iScience,
Год журнала:
2024,
Номер
27(7), С. 110363 - 110363
Опубликована: Июнь 24, 2024
Indole-3-propionic
acid
(IPA)
is
known
to
be
a
microbe-derived
compound
with
similar
structure
the
phytohormone
auxin
(indole-3-acetic
acid,
IAA).
Previous
studies
reported
that
IPA
exhibited
auxin-like
bioactivities
in
plants.
However,
underlying
molecular
mechanism
not
totally
understood.
Here,
we
revealed
modulated
lateral
root
(LR)
development
via
signaling
model
plant
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 7, 2025
Plant
cells
respond
to
a
wide
range
of
stimuli
through
intracellular
calcium
(Ca2+)
signaling.
Cyclic
nucleotide-gated
channels
(CNGCs)
are
major
class
plant
Ca2+
channels,
with
20
homologs
in
Arabidopsis.
These
tetrameric
plasma
membrane
proteins
act
downstream
diverse
signals,
such
as
phytohormones,
extracellular
damage,
cell
wall
integrity
or
temperature.
Here,
we
identify
plant-specific
proteins,
Armadillo
Repeat
Only
(ARO),
essential
regulators
possibly
all
CNGCs.
Abrogation
functional
sporophytic
AROs
results
phenotypic
pattern
strongly
reminiscent
CNGC
dysfunction,
including
defects
root
gravitropism,
hair
growth
and
morphology,
stomatal
movement,
responses
ATP
the
phytohormone
auxin.
aro2/3/4
mutants
fully
resistant
toxic
effects
caused
by
overexpression
colocalize
physically
interact
multiple
CNGCs
modulate
CNGC-dependent
currents
Xenopus
oocytes.
Structural
modeling
site-directed
mutagenesis
reveal
tetramer
formation
surrounding
channel,
interacting
via
its
IQ
domain.
Taken
together,
don't
alone,
but
larger
complex
-
channelosome,
first
kind
plants.
PLANT PHYSIOLOGY,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 21, 2025
After
germination,
seedlings
undergo
etiolated
development
(skotomorphogenesis),
enabling
them
to
grow
toward
the
soil
surface.
In
Arabidopsis
(Arabidopsis
thaliana),
exhibit
rapid
hypocotyl
elongation,
apical
hook
formation,
and
closed
cotyledons
protect
meristem.
this
study,
we
found
that
high-order
mutants
in
BPM
(BTB/POZ-MATH)
gene
family
displayed
defects
seedling
development,
characterized
by
a
shorter
hypocotyl,
early
opening,
opened
dark.
BPM1,
BPM2,
BPM4,
BPM5
exhibited
distinct
expression
patterns
subcellular
localization
seedlings.
segment
assay,
bpm
showed
auxin
response,
indicating
impaired
signaling
hypocotyl.
Expression
of
reporter
DR5:GFP
was
also
altered
bpm1,4,5
mutant
various
tissues
compared
with
wild
type.
Furthermore,
yeast
2-hybrid,
bimolecular
fluorescence
complementation,
co-immunoprecipitation
assay
analyses
BPM1
interacts
IAA10.
Experiments
protoplasts
indicated
promotes
IAA10
ubiquitylation
degradation,
which
supported
greater
protein
accumulation
background.
addition,
overexpression
resulted
phenotypes
similar
those
mutants,
BPMs
may
target
Aux/IAA
proteins
for
degradation.
Overall,
our
findings
shed
light
on
key
roles
during
development.
