Genomic signatures of habitat isolation and paleo-climate unveil the “island-like” pattern in the glasshouse plant Rheum nobile
Global Ecology and Conservation,
Год журнала:
2025,
Номер
58, С. e03471 - e03471
Опубликована: Фев. 3, 2025
Язык: Английский
Standing genetic variation and introgression shape the cryptic radiation of Aquilegia in the mountains of Southwest China
Communications Biology,
Год журнала:
2025,
Номер
8(1)
Опубликована: Апрель 30, 2025
Cryptic
diversity
in
evolutionary
radiation
offers
an
excellent
system
for
investigating
the
intricacies
of
progress.
Understanding
evolution
cryptic
is
imperative
unraveling
hidden
complexities
biodiversity.
However,
empirical
evidence
elucidating
mechanisms
behind
remains
limited,
particularly
plants.
Here,
we
focus
on
a
monophyletic
group
Aquilegia
species
mainly
distributed
mountains
Southwest
China,
one
world's
biodiversity
hotspots.
Using
whole-genome
resequencing
158
individuals
from
23
natural
populations,
identify
three
to
four
paraphyletic
lineages
within
each
morphological
species.
Our
findings
reveal
that
39
out
43
detected
instances
introgression
occurred
post-lineage
formation.
Identifying
shared
genomic
regions
indicates
divergence
fixed
singletons
A.
kansuensis
and
rockii
predates
lineage
formation,
supporting
scenario
where
incomplete
sorting
standing
variation
contributes
parallelism.
Furthermore,
strong
positive
correlations
among
differentiation,
divergence,
suggest
variations
non-sister
contribute
rapid
genetic
divergence.
study
illuminates
important
roles
plant
radiation,
advancing
our
understanding
complex
recent
events.
Язык: Английский
Key stage of evolution of endemism in Gaoligong Shan after the late Pliocene
Journal of Systematics and Evolution,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 11, 2024
Abstract
In
the
Mountains
of
Southwest
China
(MSC),
accelerated
diversification
triggered
by
mountain
uplift
and
monsoon
intensification
in
Miocene
is
widely
revealed,
but
less
known
about
stage
after
Pliocene.
Thus,
tempo‐spatial
evolution
endemism
Gaoligong
Shan
(GLGS),
a
young
isolated
with
highest
biodiversity
MSC,
was
determined.
Temporal
patterns
were
inferred
stem
ages
endemic
species
spatial
through
ancestral
area
reconstructions
distributions
sister
taxa.
Temporally,
calibrated
origin
times
114
phylogenetically
well
resolved
(75
plants,
33
animals
six
fungi)
ranged
from
early
to
Holecene.
Spatially,
82
centric
(mean
=
3.08
Ma)
significantly
younger
than
32
eccentric
(6.84
Ma).
Eccentric
origins
accumulated
smoothly
while
burst
late
Pliocene,
especially
Pleistocene
(
n
52).
origins,
most
taxa
showed
sympatric
47)
or
allopatric
23)
GLGS.
The
mainly
dispersed
southern
lower
latitude
region
20).
Principle
component
analysis
indicated
that
niche
conservatism
exerted
greater
contribution
speciation
species.
Uplift
GLGS
during
Pliocene
formation
its
endemism.
“Species
pump”
effect
climatic
fluctuations
further
revealed.
Speciation
geological
isolation
river
barriers
exceeds
adaptive
evolution.
Язык: Английский