Genome‐wide association study identifies QTL and candidate genes for grain size and weight in a Triticum turgidum collection
The Plant Genome,
Год журнала:
2025,
Номер
18(1)
Опубликована: Янв. 27, 2025
Abstract
Wheat
breeders
are
constantly
looking
for
genes
and
alleles
that
increase
grain
yield.
One
key
strategy
is
finding
new
genetic
resources
in
the
wild
domesticated
gene
pools
of
related
species
with
affecting
size.
This
study
explored
a
natural
population
Triticum
turgidum
(L.)
phenotyped
weight
size‐related
traits
three
field
trials
genotyped
single
nucleotide
polymorphism
markers
spread
across
entire
genome.
The
genome‐wide
association
analysis
identified
39
quantitative
trait
loci
(QTL)
1000‐kernel
weight,
length,
width,
area,
aspect
consistent
at
least
two
environments.
Interestingly,
23
QTL
grain‐related
were
grouped
nine
clusters
located
on
chromosomes
1A,
1B,
2B,
3B,
4B,
5A,
6B,
respectively.
Moreover,
most
these
support
findings
from
previous
analyses
further
strengthened
by
known
functions
(such
as
BG2
,
GS5
SRS3
)
their
similarity
to
other
cereal
species.
harbored
participate
various
metabolic
processes
potentially
involved
seed
development,
phytohormone
signaling,
sugar
transport,
mitogen‐activated
protein
kinases
transcriptional
factors
MADS‐box
WRKY).
Identifying
controlling
will
provide
information
available
improve
yield,
well
opportunity
develop
close
be
used
marker‐assisted
selection
programs.
Язык: Английский
Genome-wide association study reveals major loci for resistance to septoria tritici blotch in a Tunisian durum wheat collection
PLoS ONE,
Год журнала:
2025,
Номер
20(2), С. e0310390 - e0310390
Опубликована: Фев. 6, 2025
Septoria
tritici
blotch
(STB)
is
a
devastating
fungal
disease
affecting
durum
and
bread
wheat
worldwide.
Tunisian
landraces
are
reported
to
be
valuable
genetic
resources
for
resistance
STB
should
prominently
deployed
in
breeding
programs
develop
new
varieties
resistant
disease.
In
this
study,
collection
of
367
old
6
modern
genotypes
previously
assessed
using
single
Zymoseptoria
isolate
TUN06
during
2016
2017
TM220
were
phenotyped
mixture
isolates
(BULK)
under
field
conditions.
Significant
correlations
traits
the
three
different
inoculums
observed.
Using
7638
SNP
markers,
fifty-one
marker-trait
associations
(MTAs)
identified
by
genome-wide
association
study
(GWAS)
at
Bonferroni
correction
threshold
-log
10
(
P
)
>
5.184
with
phenotypic
variance
explained
(PVE)
reaching
up
58%.
A
total
eleven
QTL
mean
scoring
(TUNMeanD
TUNMeanA)
including
threeQTL
controlling
both
TM220.
major
was
on
each
chromosomes
1B,
4B,
5A,
7B,
respectively.
The
7B
chromosome
colocalized
Stb8
wheat.
Four
1B
considered
as
novel.
linked
significant
have
potential
used
marker-assisted
selection
STB.
Язык: Английский
Tan Spot ( Pyrenophora tritici-repentis ) of Wheat: A Minireview
Plant Health Cases,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 17, 2024
Abstract
Tan
spot
is
a
globally
distributed
disease
caused
by
the
necrotrophic
fungus
Pyrenophora
tritici-repentis
.
It
infects
both
durum
and
common
wheat,
leading
to
significant
yield
losses
under
conditions
conducive
development.
The
has
wide
host
range
among
grass
species
can
survive
on
alternative
hosts,
crop
debris,
infected
seeds.
Management
of
tan
involves
several
practices,
including
burning
or
burying
debris
from
previous
seasons,
rotating
crops
with
non-cereal
species,
using
non-infected
While
fungicides
are
available
for
control,
their
use
be
costly
raise
environmental
concerns.
Although
some
wheat
varieties
show
limited
resistance,
very
few
genotypes
exhibit
this
trait.
Efforts
breed
resistance
have
been
scant
largely
unsuccessful.
lack
an
effective
differential
set
identifying
races
P.
along
insufficient
understanding
host-pathogen
interaction,
hindered
breeding
efforts
delayed
development
resistant
varieties.
This
plant
health
case
offers
overview
,
its
life
cycle
genetic
diversity.
also
discusses
historical
opportunities
improving
race
classification
system,
achievements
challenges
associated
management.
Information
©
Authors
2024
Язык: Английский
Broad-spectrum resistance to fungal foliar diseases in wheat: recent efforts and achievements
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Дек. 13, 2024
Wheat
(
Triticum
spp.)
is
one
of
the
most
important
cereal
crops
in
world.
Several
diseases
affect
wheat
production
and
can
cause
20-80%
yield
loss
annually.
Out
these
diseases,
stripe
rust,
also
known
as
yellow
rust
Puccinia
striiformis
f.
sp.
tritici
),
stem
graminis
leaf
recondita
powdery
mildew
Blumeria
)
are
fungal
that
infect
foliar
part
plant.
Many
efforts
were
made
to
improve
resistance
diseases.
Due
continuous
advancement
sequencing
methods
genomic
tools,
genome-wide
association
study
has
become
available
worldwide.
This
analysis
enabled
breeders
detect
regions
controlling
specific
countries.
In
this
review,
molecular
markers
significantly
associated
with
mentioned
last
five
years
reviewed.
Common
control
broad-spectrum
different
countries
identified.
Furthermore,
common
genes
more
than
The
importance
genes,
their
functional
annotation,
potential
for
gene
enrichment
discussed.
review
will
be
valuable
producing
genotypes
by
applying
selection
target
genes.
Язык: Английский