Polygenic sex determination in vertebrates – is there any such thing?
Trends in Genetics,
Journal Year:
2023,
Volume and Issue:
39(4), P. 242 - 250
Published: Jan. 18, 2023
Language: Английский
Master-Key Regulators of Sex Determination in Fish and Other Vertebrates—A Review
International Journal of Molecular Sciences,
Journal Year:
2023,
Volume and Issue:
24(3), P. 2468 - 2468
Published: Jan. 27, 2023
In
vertebrates,
mainly
single
genes
with
an
allele
ratio
of
1:1
trigger
sex-determination
(SD),
leading
to
initial
equal
sex-ratios.
Such
are
designated
master-key
regulators
(MKRs)
and
frequently
associated
DNA
structural
variations,
such
as
copy-number
variation
null-alleles.
Most
MKR
knowledge
comes
from
fish,
especially
cichlids,
which
serve
a
genetic
model
for
SD.
We
list
14
MKRs,
dmrt1
has
been
identified
in
taxonomically
distant
species
birds
fish.
The
identification
MKRs
known
involvement
SD,
amh
fshr,
indicates
that
common
network
drives
illustrate
affects
estrogen/androgen
equilibrium,
suggesting
may
exert
over-expression
the
gene
thus
form
MKR.
However,
reason
why
certain
factors
constitute
whereas
others
do
not
is
unclear.
limited
number
conserved
suggests
their
heterologous
sequences
could
be
used
targets
future
searches
additional
species.
Sex-specific
mortality,
sex
reversal,
role
temperature
multigenic
SD
examined,
claiming
these
phenomena
often
consequences
artificial
hybridization.
discuss
essentiality
taxonomic
authentication
validate
purebred
origin
before
searches.
Language: Английский
Characterization of Microsatellite Distribution in Siamese Fighting Fish Genome to Promote Conservation and Genetic Diversity
Fishes,
Journal Year:
2022,
Volume and Issue:
7(5), P. 251 - 251
Published: Sept. 22, 2022
The
Siamese
fighting
fish
(Betta
splendens)
is
a
well-known
ornamental
and
emerging
model
species
for
studying
animal
morphology,
physiology,
behavior.
A
key
concern
of
betta
inbreeding
the
decline
in
genetic
diversity
resulting
from
commercial
breeding
programs.
Therefore,
it
essential
to
develop
markers
understanding
bases
domestication
phenotypic
diversification
this
species.
We
utilized
previously
assembled
genome
identify
characterize
microsatellites
compare
their
genomic
organization
across
different
annotated
812,134
microsatellite
loci
spanning
30.70
Mb,
accounting
6.57%
genome.
performed
silico
polymorphism
screening
related
present
these
sequences
as
candidate
cross-species
amplification.
In
addition,
we
successfully
validated
two
using
PCR-based
assays
species,
which
can
promote
further
characterization
diverse
lineages.
set
polymorphic
identified
study
may
facilitate
assessment
population
structure
marker-assisted
selection,
among
other
applications.
Language: Английский
Sexual antagonism and sex determination in three syngnathid species alongside a male pregnancy gradient
bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Sept. 1, 2023
Abstract
The
allocation
of
energy
towards
gamete
production,
parental
care,
mate
choice,
sex
roles,
and
sexual
dimorphism
generates
divergence
in
selection
pressures
between
the
sexes,
leading
to
opposing
fitness
strategies
antagonism
(SA).
Due
shared
genetic
makeup,
a
single
genomic
locus
can
contain
gene
or
allele
with
differing
impacts
on
each
sex.
This
intralocus
conflict
be
resolved
via
intersex
bias
expression
and/or
formation
sex-linked
regions,
that
may
also
regulate
determination.
Sex
determination
(SD)
encompasses
environmental
SD
(ESD),
monogenic
SD,
polygenic
SD.
Occasionally,
shifts
from
one
another
occur.
While
precise
mechanisms
driving
these
are
unknown,
SA
is
believed
major
contributor.
To
investigate
link
we
selected
three
syngnathid
species
along
gradient
male
pregnancy
evolved
different
roles
intensities
dimorphism.
By
looking
at
(Fst)
sex-biased
patterns,
uncovered
role
competition,
rather
than
pregnancy,
primarily
drive
SA.
Furthermore,
identified
processes
related
non-coding
RNAs
biased
as
mediators
Most
notably,
discovered
intraspecies
chromosome
polymorphism
Hippocampus
erectus
.
Overall,
report
important
details
interplay
suggest
understanding
its
resolution
crucial
for
unraveling
evolution
diverse
species.
Language: Английский
Quality control of fighting fish nucleotide sequences in public repositories reveals a dark matter of systematic taxonomic implication
Genes & Genomics,
Journal Year:
2022,
Volume and Issue:
45(2), P. 169 - 181
Published: Dec. 13, 2022
Language: Английский
MicrosatNavigator: exploring nonrandom distribution and lineage-specificity of microsatellite repeat motifs on vertebrate sex chromosomes across 186 whole genomes
Chromosome Research,
Journal Year:
2023,
Volume and Issue:
31(4)
Published: Sept. 30, 2023
Language: Английский
In Silico Chromosome Mapping of the Male-Specific/Linked Loci in the Jade Perch (Scortum barcoo) Suggests Chromosome 19 as the Putative Y Sex Chromosome
Fishes,
Journal Year:
2023,
Volume and Issue:
8(10), P. 482 - 482
Published: Sept. 27, 2023
Jade
perch
(Scortum
barcoo)
has
an
XX/XY
sex-determination
system
(SDS);
however,
its
sex
chromosomes
and
sex-determining
region
remain
unknown.
The
recent
availability
of
the
jade
chromosome-level
genomic
data
provides
a
valuable
resource
for
pinpointing
location
functional
genes
whole
structure.
In
this
study,
we
conducted.
silico
chromosome
mapping
male-specific/linked
loci
identified
potential
11.18
Mb
male-linked
localized
on
19
(SBA19).
Repeat
annotations
revealed
abundance
transposable
elements,
particularly
Ty3/Gypsy
novel
repeats.
Sequence
analysis
remnant
amh
gene,
which
is
considered
candidate
SDS
in
many
teleosts.
A
duplicate
copy
was
located
at
SBA6.
These
duplicated
copies
were
highly
similar
to
those
teleosts,
one
Y
chromosome.
Taken
all
together,
hypothesize
SBA19
as
putative
be
male-determining
region.
Language: Английский
Genetic insights: mapping sex-specific loci in Siamese cobra (Naja kaouthia) sheds light on the putative sex determining region
Genes & Genomics,
Journal Year:
2023,
Volume and Issue:
46(1), P. 113 - 119
Published: Nov. 20, 2023
Language: Английский
Genome-wide SNP analysis provides insights into the XX/XY sex-determination system in silver barb (Barbonymus gonionotus)
Genomics & Informatics,
Journal Year:
2023,
Volume and Issue:
21(4), P. e47 - e47
Published: Dec. 29, 2023
Silver
barb
(Barbonymus
gonionotus)
is
among
the
most
economically
important
freshwater
fish
species
in
Thailand.
It
ranks
fourth
economic
value
and
third
production
weight
for
fisheries
culture
An
XX/XY
sex-determination
system
based
on
gynogenesis
was
previously
reported
this
fish.
In
study,
molecular
basis
underlying
further
investigated.
Genome-wide
single-nucleotide
polymorphism
data
were
generated
32
captive-bred
silver
individuals,
scored
by
phenotypic
sex,
to
identify
sex-linked
regions
associated
with
sex
determination.
Sixty-three
male-linked
loci,
indicating
putative
XY
chromosomes,
identified.
Male-specific
loci
not
observed,
which
indicates
that
Y
chromosome
young
determination
region
cryptic.
A
homology
search
revealed
homologous
Mariner/Tc1
Gypsy
transposable
elements
are
probably
remnants
of
an
initial
accumulation
repeats
from
early
stages
differentiation.
This
research
provides
convincing
insights
into
mechanism
reveals
potential
barb.
The
study
basic
necessary
increasing
commercial
barbs
through
genetic
improvements.
Language: Английский