Horticulture Research,
Journal Year:
2023,
Volume and Issue:
11(1)
Published: Dec. 13, 2023
Abstract
CRISPR-Cas
technologies
allow
for
precise
modifications
in
plant
genomes
and
promise
to
revolutionize
agriculture.
These
depend
on
the
delivery
of
editing
components
into
cells
regeneration
fully
edited
plants.
In
vegetatively
propagated
plants,
such
as
grape,
protoplast
culture
provides
one
best
avenues
producing
non-chimeric
transgene-free
genome-edited
However,
poor
plants
from
protoplasts
has
hindered
their
implementation
genome
editing.
Here,
we
report
an
efficient
protocol
regenerating
multiple
grape
varieties.
By
encapsulating
calcium
alginate
beads
co-culturing
them
with
feeder
cultures,
divide
form
callus
colonies
that
regenerate
embryos
ultimately
This
worked
successfully
wine
table
(Vitis
vinifera)
varieties,
well
rootstocks
grapevine
wild
relative
Vitis
arizonica.
Moreover,
by
transfecting
CRISPR-plasmid
or
ribonucleoprotein
(RNP)
complexes,
regenerated
albino
edits
VvPHYTOENE
DESATURASE
gene
three
varieties
V.
The
results
reveal
potential
this
platform
facilitate
species.
Frontiers in Genetics,
Journal Year:
2024,
Volume and Issue:
15
Published: April 19, 2024
The
cultivated
strawberry,
Fragaria
×ananassa
,
is
a
recently
domesticated
fruit
species
of
economic
interest
worldwide.
As
such,
there
significant
in
continuous
varietal
improvement.
Genomics-assisted
improvement,
including
the
use
DNA
markers
and
genomic
selection
have
facilitated
improvements
numerous
key
traits
during
strawberry
breeding.
CRISPR/Cas-mediated
genome
editing
allows
targeted
mutations
precision
nucleotide
substitutions
target
genome,
revolutionizing
functional
genomics
crop
Genome
beginning
to
gain
traction
more
challenging
polyploid
crops,
allo-octoploid
strawberry.
release
high-quality
reference
genomes
comprehensive
subgenome-specific
genotyping
gene
expression
profiling
data
octoploid
will
lead
surge
trait
discovery
modification
by
using
CRISPR/Cas.
has
already
been
successfully
applied
for
several
genes,
anthocyanin
content,
firmness
tolerance
post-harvest
disease.
However,
reports
on
many
other
important
breeding
characteristics
associated
with
quality
production
are
still
lacking,
indicating
need
streamlined
approaches
tools
.
In
this
review,
we
present
an
overview
latest
advancements
knowledge
efforts
involving
CRISPR/Cas
enhancement
varieties.
Furthermore,
explore
potential
applications
technology
improving
Rosaceous
plant
species.
BIO-PROTOCOL,
Journal Year:
2025,
Volume and Issue:
15(1365)
Published: Jan. 1, 2025
CRISPR/Cas9
genome
editing
technology
has
revolutionized
plant
breeding
by
offering
precise
and
rapid
modifications.
Traditional
methods
are
often
slow
imprecise,
whereas
allows
for
targeted
genetic
improvements.
Previously,
direct
delivery
of
Cas9-single
guide
RNA
(sgRNA)
ribonucleoprotein
(RNP)
complexes
to
grapevine
(Vitis
vinifera)
protoplasts
been
demonstrated,
but
successful
regeneration
edited
into
whole
plants
not
achieved.
Here,
we
describe
an
efficient
protocol
obtaining
transgene/DNA-free
transfecting
isolated
from
embryogenic
callus
subsequently
regenerating
them.
The
regenerated
were
comparable
in
morphology
growth
habit
wild-type
controls.
This
provides
a
highly
method
DNA-free
grapevine,
addressing
regulatory
concerns
potentially
facilitating
the
improvement
other
woody
crop
plants.
Key
features
•
Protoplasts
one
most
commonly
used
systems
application
new
technologies,
including
editing.
accessible
platform
CRISPR-Cas9
ribonucleoparticles
through
chemical
or
physical
transfection.
avoid
use
both
Agrobacterium
tumefaciens
plasmids;
no
stable
integration
exogenous
DNA
occurs.
background
remains
unchanged
identical
original
plant.
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 15, 2025
Abstract
Protoplast-based
systems
have
been
utilised
in
a
wide
variety
of
plant
species
to
enable
genome
editing
without
chromosomal
introgression
foreign
DNA
into
genomes.
This
allows
elite
cultivars
be
edited
further
genetic
segregation,
preserving
their
unique
composition
and
regulatory
status
as
non-transgenic.
can
achieved
by
DNA-free
protoplasts,
followed
regeneration.
However,
protoplast
isolation
presents
barrier
the
development
advanced
breeding
technologies
raspberry
no
protocol
has
published
for
species.
Pre-assembled
ribonucleoprotein
complexes
(RNPs)
do
not
require
cellular
processing
commercial
availability
Cas9
proteins
synthetic
guide
RNAs
streamlined
protocols.
study
novel
high-yielding
from
stem
cultures
RNP-mediated
transfection
with
CRISPR-Cas9.
Targeted
mutagenesis
phytoene
desaturase
gene
at
two
intragenic
loci
resulted
an
efficiency
19%,
though
estimated
varied
depending
on
indel
analysis
technique.
Only
amplicon
sequencing
was
sensitive
enough
confirm
low
sample.
To
our
knowledge,
this
constitutes
first
use
raspberry.
provides
valuable
platform
understanding
function
facilitates
precision
important
soft
fruit
crop.
PROTOPLASMA,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 25, 2025
Abstract
Protoplasts
are
single
cells
enclosed
by
the
plasma
membrane
after
cell
wall
removal.
They
widely
used
in
various
biotechnological
applications,
including
gene
functional
analysis,
verification
of
genome
editing
reagents,
and
plant
regeneration.
Recent
advances
have
enabled
production
non-chimeric
transgene-free
genome-edited
plants
using
protoplasts.
This
process
involves
protoplast
isolation,
transformation,
regeneration,
requiring
advanced
technical
skills.
Challenges
isolation
regeneration
limited
their
use
editing.
In
grapevines,
however,
very
few
studies
reported
protoplasts
isolated
from
leaves.
Efficient
transformation
protocols
for
Chardonnay
remain
lacking
require
cultivar-specific
optimization.
this
study,
we
established
a
reliable
efficient
system
optimizing
conditions
PEG-mediated
cultivar.
The
yield
viable
was
approximately
75
×
10
6
per
gram
leaf
material,
with
viability
91%.
A
efficiency
87%
achieved
under
optimized
conditions.
To
evaluate
ability
mesophyll
protoplast,
transformed
untransformed
were
cultured
on
solid
liquid
MS
media
supplemented
2
mg/L
2,4-D
0.5
BA
to
facilitate
microcalli
formation.
Microcalli
formed
feeder
layer
developed
into
calli
when
transferred
culture
BA.
However,
unable
regenerate
roots
or
shoots.
These
findings
provide
foundation
further
optimization
protoplast-based
systems
potential
enhance
applications
species.
Frontiers in Plant Science,
Journal Year:
2023,
Volume and Issue:
14
Published: Dec. 11, 2023
The
multifaceted
nature
of
climate
change
is
increasing
the
urgency
to
select
resilient
grapevine
varieties,
or
generate
new,
fitter
cultivars,
withstand
a
multitude
new
challenging
conditions.
attainment
this
goal
hindered
by
limiting
pace
traditional
breeding
approaches,
which
require
decades
result
in
selections.
On
other
hand,
marker-assisted
has
proved
useful
when
it
comes
traits
governed
one
few
genes
with
great
effects
on
phenotype,
but
its
efficacy
still
restricted
for
complex
controlled
many
loci.
these
premises,
innovative
strategies
are
emerging
could
help
guide
selection,
taking
advantage
genetic
diversity
within
Vitis
genus
entirety.
Multiple
germplasm
collections
also
available
as
source
material
introgression
alleles
interest
via
adapted
and
pioneering
transformation
protocols,
present
themselves
promising
tools
future
applications
notably
recalcitrant
species
such
grapevine.
Genome
editing
intersects
both
strategies,
not
only
being
an
alternative
obtain
focused
changes
relatively
rapid
way,
supporting
fine-tuning
genotypes
developed
methods.
A
review
state
art
concerning
resources
possibilities
use
techniques
aid
selection
presented
here
support
production
climate-smart
genotypes.