Abstract
Background
African
cattle
represent
a
unique
resource
of
genetic
diversity
in
response
to
adaptation
numerous
environmental
challenges.
Characterising
the
landscape
indigenous
and
identifying
genomic
regions
genes
functional
importance
can
contribute
targeted
breeding
tackle
loss
diversity.
However,
pinpointing
adaptive
variant
determining
underlying
mechanisms
remains
challenging.
Results
In
this
study,
we
use
selection
signatures
from
whole-genome
sequence
data
eight
breeds
combination
with
gene
expression
quantitative
trait
loci
(QTL)
databases
characterise
targets
artificial
identify
candidate
genes.
general,
trait-association
analyses
suggest
innate
immune
system
production
traits
as
important
targets.
For
example,
large
region,
identified
for
all
except
N’Dama,
was
located
on
BTA27,
including
multiple
defensin
DEFB
coding-genes.
Out
22
analysed
tissues,
under
putative
were
significantly
enriched
those
overexpressed
adipose
tissue,
blood,
lung,
testis
uterus.
Our
results
further
that
cis
-eQTL
are
themselves
targets;
most
found
positive
correlation
between
allele
frequency
differences
effect
size,
suggesting
acts
directly
regulatory
variants.
Conclusions
By
combining
information
QTL,
able
reveal
compelling
did
not
stand
out
signature
alone
(e.g.
GIMAP8
tick
resistance
NDUFS3
heat
adaptation).
Insights
study
will
help
inform
maintain
locally
adapted,
hence
important,
breeds.
International Journal of Molecular Sciences,
Год журнала:
2024,
Номер
25(13), С. 7147 - 7147
Опубликована: Июнь 28, 2024
Beef
is
a
major
global
source
of
protein,
playing
an
essential
role
in
the
human
diet.
The
worldwide
production
and
consumption
beef
continue
to
rise,
reflecting
significant
trend.
However,
despite
critical
importance
cattle
resources
agriculture,
diversity
breeds
faces
severe
challenges,
with
many
at
risk
extinction.
initiation
Cattle
Genome
Project
crucial.
By
constructing
high-precision
functional
annotation
map
their
genome,
it
becomes
possible
analyze
genetic
mechanisms
underlying
important
traits
cattle,
laying
solid
foundation
for
breeding
more
efficient
productive
breeds.
This
review
details
advances
genome
sequencing
assembly
technologies,
iterative
upgrades
reference
its
application
pan-genome
research.
Additionally,
summarizes
relevant
studies
on
discovery
genes
associated
key
such
as
growth,
meat
quality,
reproduction,
polled
traits,
disease
resistance,
environmental
adaptability.
Finally,
explores
potential
telomere-to-telomere
(T2T)
assembly,
structural
variations
(SVs),
multi-omics
techniques
future
breeding.
These
advancements
collectively
offer
promising
avenues
enhancing
improving
traits.
Animal Genetics,
Год журнала:
2024,
Номер
55(3), С. 352 - 361
Опубликована: Март 4, 2024
Abstract
Local
species
exhibit
distinctive
indigenous
characteristics
while
showing
unique
productive
and
phenotypic
traits.
However,
the
advent
of
commercialization
has
posed
a
substantial
threat
to
survival
species.
Anxi
cattle,
an
endangered
native
breed
in
China,
have
evolved
growth
reproductive
extreme
desert
semidesert
ecosystems.
In
this
study,
we
conducted
genomic
comparison
10
cattle
genomes
with
those
five
other
global
populations/breeds
assess
genetic
diversity
identify
candidate
regions
cattle.
Population
structure
analyses
revealed
that
are
part
East
Asian
clade,
exhibiting
higher
than
commercial
breeds.
Through
selective
sweep
analysis,
identified
specific
variations
linked
environmental
adaptability
Notably,
several
genes,
including
CERS3
involved
regulating
skin
permeability
antimicrobial
functions,
RBFOX2
associated
cardiac
development,
SLC16A7
participated
regulation
pancreatic
endocrine
function,
SPATA3
related
reproduction.
Our
findings
features
dryland
environments,
provided
invaluable
insights
for
further
research
preservation,
had
important
significance
enriching
domestic
breeding
gene
bank.
Yunnan
Province,
located
in
Southwestern
China,
the
intricate
geography,
variable
climate,
and
abundant
vegetation
of
region
have
collectively
contributed
to
shaping
distinctive
germplasm
characteristics
observed
indigenous
cattle
through
prolonged
domestication.
The
different
breeds
exhibit
distinct
advantageous
traits,
which
are
an
important
source
genetic
variation
because
they
might
carry
alleles
that
enable
them
adapt
local
environment
tough
feeding
conditions.
However,
a
comprehensive
genomic
landscape
resources
has
yet
be
delineated.
Herein,
we
employed
140
whole-genome
sequencing
data
from
across
eight
elucidate
their
diversity
population
structure.
Utilizing
both
uniparental
biparental
markers,
elucidated
composition
cattle,
is
closely
correlated
with
geographic
environment.
A
predominant
East
Asian
indicine
ancestry
gradually
diminishes
towards
north.
analysis
revealed
high
among
populations
low-to-moderate
inbreeding
coefficient,
underscoring
rich
reservoir
breeds.
Additionally,
gene
flow
between
wild
Bos
species
around
was
verified,
highlighting
localized
introgression
Gayal
as
critical
factor
successful
adaptation
hot
humid
environments.
Our
findings
established
SNPs
database
for
facilitating
resource
conservation
selective
breeding.
Moreover,
these
valuable
insights
into
adaptive
history
contribute
significantly
our
understanding
evolutionary
dynamics
offer
foundation
future
improvement
strategies.
Abstract
Background
The
crossbreeding
of
specialized
beef
cattle
breeds
with
Chinese
indigenous
is
a
common
method
genetic
improvement.
Xia’nan
cattle,
crossbreed
Charolais
and
Nanyang
China’s
first
breed
independent
intellectual
property
rights.
After
more
than
two
decades
selective
breeding,
exhibit
robust
physique,
good
environmental
adaptability,
tolerance
to
coarse
feed,
high
meat
production
rates.
This
study
analyzed
the
population
structure,
diversity,
genomic
variations
using
whole-genome
sequencing
data
from
30
178
published
data.
Result
ancestry
estimating
composition
analysis
showed
that
proportions
for
were
mainly
small
amount
cattle.
Through
diversity
studies
(nucleotide
linkage
disequilibrium
decay),
we
found
higher
in
Europe
but
lower
native
Then,
used
four
methods
detect
genome
candidate
regions
influencing
excellent
traits
Among
detected
results,
42
genes
(θπ
CLR)
131
(
F
ST
XP-EHH)
by
different
detection
strategies.
In
addition,
region
BTA8
strong
selection
signals.
Finally,
conducted
functional
annotation
on
these
may
influence
body
development
NR6A1
),
quality
MCCC1
growth
WSCD1
,
TMEM68
MFN1
NCKAP5
immunity
IL11RA
CNTFR
CCL27
SLAMF1
SLAMF7
NAA35
GOLM1
).
Conclusion
We
elucidated
features
structure
some
signals
potentially
associated
crucial
economic
research
provided
basis
further
breeding
improvements
served
as
reference
enhancements
other
Genes,
Год журнала:
2024,
Номер
15(9), С. 1113 - 1113
Опубликована: Авг. 23, 2024
(1)
Background:
Mengshan
cattle
from
the
Yimeng
mountainous
region
in
China
stand
out
as
a
unique
genetic
resource,
known
for
their
adaptive
traits
and
environmental
resilience.
However,
these
are
currently
endangered
comprehensive
genomic
characterization
remains
largely
unexplored.
This
study
aims
to
address
this
gap
by
investigating
features
selection
signals
cattle.
(2)
Methods:
Utilizing
whole-genome
resequencing
data
122
cattle,
including
37
newly
sequenced
we
investigated
population
structure,
diversity,
signals.
(3)
Results:
Our
analyses
revealed
that
current
primarily
exhibit
European
taurine
ancestry,
with
distinct
characteristics
indicative
of
traits.
We
identified
candidate
genes
associated
immune
response,
growth
traits,
meat
quality,
neurodevelopment,
shedding
light
on
underlying
attributes
Enrichment
analysis
highlighted
pathways
related
insulin
secretion,
calcium
signaling,
dopamine
synapse,
further
elucidating
basis
phenotypic
(4)
Conclusions:
results
provide
valuable
insights
research
conservation
efforts
aimed
at
preserving
resource.
enhances
understanding
genetics
underscores
importance
informing
resources
initiatives
indigenous
breeds.
The
majority
of
native
cattle
are
taurine
×
indicine
diverse
phenotypes
in
the
central
region
China.
Sanjiang
cattle,
a
typical
breed
region,
play
role
human
livelihood
and
have
good
adaptability,
including
resistance
to
dampness,
heat,
roughage,
disease,
thus
regarded
as
an
important
genetic
resource.
However,
history
successful
remains
unknown.
Here,
we
sequenced
10
genomes
compared
them
70
5
representative
populations
worldwide.
We
characterized
genomic
diversity
formation
process
found
that
mixed
ancestry
(55.6%)
(33.2%)
dating
approximately
30
generations
ago,
which
has
shaped
genome
cattle.
Through
ancestral
fragment
inference,
selective
sweep
transcriptomic
analysis,
identified
several
genes
linked
lipid
metabolism,
immune
regulation,
stress
reactions
across
mosaic
showing
excess
or
ancestry.
Taurine
might
contribute
meat
quality,
is
more
conducive
adaptation
hot
climate
conditions,
making
valuable
resource
for
Our
results
will
help
us
understand
evolutionary
components
provide
reference
conservation
breeding
Chinese
Frontiers in Microbiology,
Год журнала:
2023,
Номер
14
Опубликована: Ноя. 29, 2023
Brucella
abortus
is
a
globally
important
zoonotic
pathogen
largely
found
in
cattle
hosts
and
typically
transmitted
to
humans
through
contaminated
dairy
products
or
contact
with
diseased
animals.
Despite
the
long,
shared
history
of
humans,
little
known
about
how
trade
has
spread
this
throughout
world.
Whole
genome
sequencing
provides
unparalleled
resolution
investigate
global
evolutionary
bacterium
such
as
B.
by
providing
phylogenetic
that
been
unobtainable
using
other
methods.
We
report
on
large-scale
analysis
collected
from
16
52
countries.
used
single
nucleotide
polymorphisms
(SNPs)
identify
genetic
variation
1,074
genomes
maximum
parsimony
generated
phylogeny
identified
four
major
clades.
Two
these
clades,
clade
A
(median
date
972
CE;
95%
HPD,
781–1142
CE)
B
150
BCE;
515
BCE–164
CE),
were
exceptionally
diverse
for
species
are
exclusively
African
origin
where
provenance
known.
The
third
clade,
C
949
766–1102
had
most
isolates
coming
broad
swath
Middle
East,
Europe,
Asia,
also
relatively
high
diversity.
Finally,
fourth
D
1467
1367–1553
comprises
large
majority
dominant
but
monomorphic
group
predominantly
infects
Europe
Americas.
These
data
consistent
an
subsequent
probably
movement
infected
cattle.
hypothesize
European
arrival
Americas
starting
15th
century
introduced
Western
introduction
few
common
breeds
strains
D.
provide
foundation
comprehensive
should
be
resource
human
veterinary
epidemiology.
Journal of Animal Breeding and Genetics,
Год журнала:
2023,
Номер
141(3), С. 235 - 256
Опубликована: Дек. 25, 2023
Abstract
In
the
past
few
decades,
genomic
selection
and
other
refined
strategies
have
been
used
to
increase
growth
rate
lean
meat
production
of
beef
cattle.
Nevertheless,
fast
rates
cattle
breeds
are
often
accompanied
by
a
reduction
in
intramuscular
fat
(IMF)
deposition,
impairing
quality.
Transcription
factors
play
vital
roles
regulating
adipogenesis
lipogenesis
Meanwhile,
understanding
role
transcription
has
gained
significant
attention
IMF
deposition
Therefore,
aim
this
paper
was
provide
comprehensive
summary
valuable
insight
into
complex
This
review
summarizes
contemporary
studies
lipogenesis,
genome‐wide
analysis
factors,
epigenetic
regulation
nutritional
metabolic
signalling
pathways,
functional
genomics
methods,
transcriptomic
profiling
adipose
tissues,
quality
comparative
with
livestock
species.
conclusion,
crucial
promoting
adipocyte
development
fatty
acid
biosynthesis
They
control
tissue
formation
metabolism,
thereby
improving
maintaining
balance.
Understanding
processes
which
these
regulate
lipid
metabolism
will
simplify
marbling
or
composition
Frontiers in Genetics,
Год журнала:
2024,
Номер
15
Опубликована: Июль 25, 2024
To
enhance
the
beef
cattle
industry,
Heilongjiang
Province
has
developed
a
new
Crossbred
variety
through
crossbreeding
with
exotic
commercial
breeds.
This
exhibits
relatively
excellent
meat
quality,
and
efficient
reproductive
performance,
catering
to
market
demands.