Current Opinion in Plant Biology,
Journal Year:
2024,
Volume and Issue:
82, P. 102624 - 102624
Published: Sept. 3, 2024
Plant
cell
cortical
microtubules
are
located
beneath
the
plasma
membrane
and
direct
location
of
cellulose
synthases
during
interphase,
influencing
morphology.
Microtubule-associated
proteins
(MAPs)
regulate
these
in
response
to
growth
environmental
stimuli.
This
review
focuses
on
recent
advances
understanding
microtubule
nucleation
mechanisms
plants
spatiotemporal
regulation
arrays
via
phytohormone
signaling.
Emphasis
is
placed
conserved
nature
gamma-tubulin
ring
complex
(γTuRC)
plant-specific
components.
The
discussion
includes
role
Augmin
distinct
function
Msd1-Wdr8
plants.
We
also
explore
effects
hormone
signaling,
particularly
brassinosteroids,
regulatory
apparatus.
interplay
between
signaling
pathways
dynamics,
including
phosphorylation
events
post-translational
modifications,
addressed.
Finally,
impact
signals
protein
modifications
regulating
organization
suggested
for
future
research.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 12, 2024
Abstract
Developmental
remodeling
shapes
neural
circuits
via
activity-dependent
pruning
of
synapses
and
axons.
The
cytoskeleton
is
critical
for
this
process,
as
microtubule
loss
enzymatic
severing
an
early
step
across
many
species.
However,
how
microtubule-severing
enzymes,
such
spastin,
are
activated
in
specific
neuronal
compartments
remains
unknown.
Here,
we
reveal
that
polyglutamylation,
a
posttranslational
tubulin
modification
enriched
neurons,
plays
instructive
role
developmental
by
tagging
microtubules
severing.
Motor
neuron-specific
gene
deletion
enzymes
add
or
remove
polyglutamylation—TTLL
glutamylases
vs.
CCP
deglutamylases—accelerates
delays
neuromuscular
synapse
neurotransmission-dependent
manner.
This
mechanism
not
to
peripheral
but
also
operates
central
circuits,
e.g.,
the
hippocampus.
Thus,
polyglutamylation
acts
rheostat
morphology
connectivity.
The Plant Journal,
Journal Year:
2024,
Volume and Issue:
119(4), P. 2133 - 2143
Published: July 4, 2024
SUMMARY
Chlamydomonas
reinhardtii
,
a
unicellular
green
alga,
has
been
widely
used
as
model
organism
for
studies
of
algal,
plant
and
ciliary
biology.
The
generation
targeted
amino
acid
mutations
is
often
necessary,
this
can
be
achieved
using
CRISPR/Cas9
induced
homology‐directed
repair
to
install
genomic
modifications
from
exogenous
donor
DNA.
Due
the
low
gene
editing
efficiency,
technical
challenge
lies
in
identifying
mutant
cells.
Direct
sequencing
not
practical,
pre‐screening
required.
Here,
we
report
strategy
generating
screening
point
system.
based
on
designing
DNA
codon
degeneracy,
which
enables
design
specific
primers
facilitate
by
PCR.
An
vitro
assembled
RNP
complex,
along
with
dsDNA
an
antibiotic
resistance
marker,
was
electroporated
into
wild‐type
cells,
followed
PCR
screening.
To
demonstrate
principle,
have
generated
E102K
mutation
centrin
K40R
α‐tubulin.
efficiencies
at
target
sites
Centrin
TUA1
TUA2
were
4,
24
8%
respectively,
More
than
80%
mutants
expected
size
products
precisely
edited,
revealed
sequencing.
Subsequently,
precision‐edited
biochemically
verified.
introduction
degeneracy
did
affect
expression
α‐tubulins.
Thus,
approach
identification
mutations,
especially
genes
rates.
Current Opinion in Plant Biology,
Journal Year:
2024,
Volume and Issue:
82, P. 102624 - 102624
Published: Sept. 3, 2024
Plant
cell
cortical
microtubules
are
located
beneath
the
plasma
membrane
and
direct
location
of
cellulose
synthases
during
interphase,
influencing
morphology.
Microtubule-associated
proteins
(MAPs)
regulate
these
in
response
to
growth
environmental
stimuli.
This
review
focuses
on
recent
advances
understanding
microtubule
nucleation
mechanisms
plants
spatiotemporal
regulation
arrays
via
phytohormone
signaling.
Emphasis
is
placed
conserved
nature
gamma-tubulin
ring
complex
(γTuRC)
plant-specific
components.
The
discussion
includes
role
Augmin
distinct
function
Msd1-Wdr8
plants.
We
also
explore
effects
hormone
signaling,
particularly
brassinosteroids,
regulatory
apparatus.
interplay
between
signaling
pathways
dynamics,
including
phosphorylation
events
post-translational
modifications,
addressed.
Finally,
impact
signals
protein
modifications
regulating
organization
suggested
for
future
research.