Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Ноя. 25, 2024
Current
eggplant
variety
breeding
is
still
mainly
based
on
conventional
methods,
and
there
remains
a
lack
of
effective
molecular
systems
for
complex
traits
controlled
by
multiple
genes,
such
as
yield
quality.
To
accelerate
the
research
progress
genetics
breeding,
it
necessary
to
implement
genome-based
strategy.
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Апрель 26, 2024
High
fiber
strength
(FS)
premium
cotton
has
significant
market
demand.
Consequently,
enhancing
FS
is
a
major
objective
in
breeding
quality
cotton.
However,
there
notable
lack
of
known
functionally
applicable
genes
that
can
be
targeted
for
breeding.
To
address
this
issue,
our
study
used
specific
length–amplified
fragment
sequencing
combined
with
bulk
segregant
analysis
to
trait
an
F
2
population.
Subsequently,
we
integrated
these
results
previous
quantitative
locus
mapping
regarding
quality,
which
simple
sequence
repeat
markers
,
2:3
and
recombinant
inbred
line
populations.
We
identified
stable
qFS
A06
associated
located
on
chromosome
(90.74–90.83
Mb).
Within
interval,
cloned
gene,
GhALDH7B4_A06
harbored
critical
mutation
site
coding
sequences
distinct
the
two
parents
tested
line.
In
paternal
parent
Ji228,
gene
normal
referred
as
O
;
however,
nonsense
maternal
Ji567
premature
termination
protein
translation,
designated
truncated
S
.
Validation
using
lines
expression
revealed
correlated
FS.
Virus-induced
silencing
GhALDH7B4
caused
decreases
micronaire.
Conversely,
overexpression
Arabidopsis
boosted
cell
wall
component
contents
stem.
The
findings
provide
candidate
improving
through
molecular
Electronic Journal of Biotechnology,
Год журнала:
2024,
Номер
70, С. 14 - 22
Опубликована: Май 23, 2024
Cold
damage
of
maize
during
germination
is
a
global
problem,
it
occurs
frequently
in
northeast
China,
and
leads
to
large
scale
reduction
yield.
Low
temperature
tolerance
complex
quantitative
trait
controlled
by
multi
genes,
no
major
QTLs
or
key
genes
have
been
identified.
A
F2
isolation
population
with
S319
R144
as
parents
was
constructed.
The
bulked
segregant
analysis
(BSA)
specific-locus
amplified
fragment-sequencing
(SLAF-seq)
methods
were
applied
locate
the
chromosomal
association
regions
related
low
germination.
Sequencing
obtained
221.72
Gbp
clean
data,
an
average
sequencing
depth
25.96X.
Four
candidate
associated
obtained,
total
length
25.71
Mb
1513
annotated
including
456
nonsynonymous
mutant
111
frameshift
genes.
This
study
aimed
lay
foundation
for
mining
germination,
accelerate
process
targeted
improvement
molecular
marker
assisted
breeding.
Superior
fiber
quality
is
one
of
the
most
important
objectives
in
cotton
breeding.
To
detect
genetic
basis
underlying
quality,
an
F2
population
containing
413
plants
was
constructed
by
crossing
Jifeng
914
and
173,
both
which
have
superior
with
173
being
better.
Five
traits
were
investigated
F2,
F2:3,
F2:4,
F2:5
populations.
Quantitative
trait
loci
(QTL)
mapping
conducted
based
on
a
high-density
map
11,488
single
nucleotide
polymorphisms
(SNPs)
spanning
4,202.12
cM
length.
Transgressive
segregation
patterns
complex
correlations
five
tested
observed.
A
total
108
QTLs
found,
including
27
for
length
(FL),
16
strength
(FS),
24
micronaire
(MC),
17
uniformity
(FU),
elongation
rate
(FE).
Chromosome
A7
contained
12
QTL,
ranking
first.
No
QTL
found
chromosome
D1
D11.
Each
contributed
1.98%–21.45%
to
phenotypic
variation
(PV),
13
major
effect
that
more
than
10%
toward
PV.
Two
could
be
repeatedly
detected
three
populations,
qFL-D3-2
9.18%–21.45%
PV,
qFS-A11-1
F2:4
6.05%–10.41%
Another
seven
stable
two
four
QTLs:
qFL-A12-3,
qFS-D10-2,
qMC-D6-2,
qMC-D8-1.
Fourteen
QTL-overlapping
regions
might
explain
among
traits.
Four
A11,
D3,
D6,
D10
covered
are
promising
further
fine
mapping.
The
genomic
populations
contain
810
genes.
Gene
functional
analysis
revealed
annotated
genes
mainly
involved
protein
binding
metabolic
pathways.
Fifteen
candidate
region
highly
expressed
or
ovules
during
initiation,
elongation,
secondary
cell
wall
thickening,
maturation
stages.
qRT-PCR
Ghir_D03G005440.1
Ghir_D03G011310.1
may
play
role
promoting
Ghir_D03G006470.1
beneficial
elongation.
This
study
provides
information
revealing
molecular
quality.
Physiologia Plantarum,
Год журнала:
2024,
Номер
176(4)
Опубликована: Июль 1, 2024
Abstract
Cotton
plays
a
crucial
role
in
the
progress
of
textile
industry
and
betterment
human
life
by
providing
natural
fibers.
In
our
study,
we
explored
genetic
determinants
cotton
architecture
fiber
yield
quality
crossbreeding
Gossypium
hirsutum
barbadense
,
creating
recombinant
inbred
line
(RIL)
population.
Utilizing
SNP
markers,
constructed
an
extensive
map
encompassing
7,730
markers
over
2,784.2
cM.
We
appraised
two
architectural
seven
traits
within
six
environments,
identifying
58
QTLs,
which
49
demonstrated
stability
across
these
environments.
These
encompassed
QTLs
for
such
as
lint
percentage
(LP),
boll
weight
(BW),
strength
(STRENGTH),
seed
index
(SI),
micronaire
(MIC),
primarily
located
on
chromosomes
chr‐A07,
chr‐D06,
chr‐D07.
Notably,
chr‐D07
houses
QTL
region
affecting
SI,
corroborated
multiple
studies.
Within
this
region,
genes
BZIP043
SEP2
were
identified
pivotal,
with
particularly
showing
augmented
expression
developing
ovules.
discoveries
contribute
significantly
to
marker‐assisted
selection,
potentially
elevating
both
production.
findings
provide
valuable
insights
into
breeding
strategies,
offering
information
enhance
As
a
Brassica
crop,
napus
typically
has
single
flowers
that
contain
four
petals.
The
double-flower
phenotype
of
rapeseed
been
desirable
trait
in
China
because
its
potential
commercial
value
ornamental
tourism.
However,
few
double-flowered
germplasms
have
documented
B.
napus,
and
knowledge
the
underlying
genes
is
limited.
Here,
D376
was
characterized
as
strain
presented
an
average
10.92
±
1.40
petals
other
normal
floral
organs.
F1,
F2
BC1
populations
were
constructed
by
crossing
with
single-flowered
line
reciprocally.
Genetic
analysis
revealed
recessive
controlled
multiple
genes.
To
identify
key
controlling
trait,
bulk
segregant
sequencing
(BSA-seq)
RNA-seq
analyses
conducted
on
individual
bulks
opposite
extreme
phenotypes.
Through
BSA-seq,
one
candidate
interval
mapped
at
region
chromosome
C05:
14.56–16.17
Mb.
GO
KEGG
enrichment
DEGs
significantly
enriched
carbohydrate
metabolic
processes,
notably
starch
sucrose
metabolism.
Interestingly,
five
thirty-six
associated
development
up-
down-regulated,
respectively,
plants.
A
combined
BSA-seq
data
candidates
double
flower
BnaC05.ERS2
most
promising
gene.
These
findings
provide
novel
insights
into
breeding
varieties
lay
theoretical
foundation
for
unveiling
molecular
mechanisms
napus.