Plants,
Journal Year:
2021,
Volume and Issue:
10(8), P. 1715 - 1715
Published: Aug. 20, 2021
Understanding
how
species
adapt
to
extreme
environments
is
an
extension
of
the
main
goals
evolutionary
biology.
While
alpine
plants
are
ideal
system
for
investigating
genetic
basis
high-altitude
adaptation,
genomic
resources
in
these
still
limited.
In
present
study,
we
generated
reference-level
transcriptomic
data
five
Saussurea
through
high-throughput
sequencing
and
de
novo
assembly.
Three
them
located
highland
Qinghai-Tibet
Plateau
(QTP),
other
two
close
relatives
distributed
lowland.
A
series
comparative
genomics
analyses
were
conducted
explore
signatures
adaptive
evolution
environments.
Estimation
divergence
time
using
single-copy
orthologs
revealed
that
diversified
during
Miocene,
a
period
with
extensive
tectonic
movement
climatic
fluctuation
on
QTP.
We
characterized
gene
families
specific
species,
including
genes
involved
oxidoreductase
activity,
pectin
catabolic
process,
lipid
transport,
polysaccharide
metabolic
which
may
play
important
roles
defense
hypoxia
freezing
temperatures
Furthermore,
phylogenetic
context
branch
model,
identified
hundreds
positive
selection.
These
DNA
repair,
membrane
response
UV-B
hypoxia,
reproductive
processes,
as
well
some
processes
associated
nutrient
intake,
potentially
responsible
adaptation
harsh
high
altitude.
Overall,
our
study
provides
valuable
gained
helpful
insights
into
adapting
National Science Review,
Journal Year:
2021,
Volume and Issue:
unknown
Published: Feb. 19, 2021
Biodiversity
science
in
China
has
seen
rapid
growth
over
recent
decades,
ranging
from
baseline
biodiversity
studies
to
understanding
the
processes
behind
evolution
across
dynamic
regions
such
as
Qinghai-Tibetan
Plateau.
We
review
research,
including
species
catalogues;
monitoring;
origins,
distributions,
maintenance
and
threats
biodiversity;
biodiversity-related
ecosystem
function
services;
ecosystems'
responses
global
change.
Next,
we
identify
priority
topics
offer
suggestions
priorities
for
future
research
China.
These
include
(i)
ecology
biogeography
of
Plateau
surrounding
mountains,
that
subtropical
tropical
forests
China;
(ii)
marine
inland
aquatic
(iii)
effective
conservation
management
maintain
synergies
between
socio-economic
development
fulfil
China's
vision
becoming
an
ecological
civilization.
In
addition,
propose
three
strategies:
translate
advanced
into
practice
conservation;
strengthen
capacity
building
application
technologies,
high-throughput
sequencing,
genomics
remote
sensing;
expand
international
collaborations.
Based
on
progress
is
well
positioned
become
a
leader
near
future.
Journal of Systematics and Evolution,
Journal Year:
2021,
Volume and Issue:
59(6), P. 1142 - 1158
Published: Aug. 25, 2021
Abstract
The
Qinghai–Tibet
Plateau
(QTP)
sensu
lato
(
sl
)
houses
an
exceptional
species
diversity
in
Asia.
To
develop
a
comprehensive
understanding
of
this
fascinating
region,
we
reviewed
recent
progress
from
biogeographic,
paleogeographic,
paleontological
and
genomic
research
both
plants
animals
the
QTP
.
Numerous
studies
have
been
conducted
to
examine
whether
uplift
triggered
production
rich
there,
Quaternary
“unified
ice
sheet”
eliminated
on
central
plateau
how
high‐altitude
developed
extreme
environment
adaptations.
Major
disputes
arose
about
first
issue,
mainly
different
circumscriptions
related
uplift,
inaccurate
dating
molecular
phylogenetic
trees,
non‐causal
correlations
between
diversification.
is
spatially
temporally
heterogeneous,
abundant
fossils
reported
recently
similarly
support
such
asynchronous
upheaval
model
across
entire
region.
Available
phylogeographic
alpine
suggested
their
glacial
refugia
,
rejecting
unified
sheet
during
Last
Glacial
Maximum.
Genomic
evidence
limited
number
has
identified
numerous
candidate
genes
for
adaptation.
In
future,
more
should
be
focused
speciation
adaptation
mechanisms
based
cutting‐edge
methods.
PLoS Genetics,
Journal Year:
2024,
Volume and Issue:
20(2), P. e1010892 - e1010892
Published: Feb. 2, 2024
Changes
in
gene
regulation
have
long
been
appreciated
as
a
driving
force
of
adaptive
evolution,
however
the
relative
contributions
cis-
and
trans-
acting
changes
to
over
short
evolutionary
timescales
remain
unclear.
Instances
recent,
parallel
phenotypic
evolution
provide
an
opportunity
assess
whether
patterns
are
seen
at
level
expression,
contribution
cis
-
trans
early
stages
divergence.
Here,
we
studied
expression
liver
brown
adipose
tissue
two
wild-derived
strains
house
mice
that
independently
adapted
cold,
northern
environments,
compared
them
strain
from
warm,
tropical
environment.
To
investigate
regulatory
parents
allele-specific
F1
hybrids
crosses
between
warm-adapted
cold-adapted
strains.
First,
found
different
showed
both
unique
shared
but
proportion
(i.e.
parallelism)
was
greater
than
expected
by
chance.
Second,
discovered
occurred
largely
tissue-specific
-regulated
genes,
these
genes
were
over-represented
cases
evolution.
Finally,
integrated
data
with
scans
for
selection
natural
populations
substantial
parallelism
under
selection.
Furthermore,
outliers
associated
more
chance;
influenced
phenotypes
such
body
size,
immune
functioning,
activity
level.
These
results
demonstrate
cold
environments
driven
-regulatory
changes,
providing
insight
into
mechanisms
earliest
BMC Biology,
Journal Year:
2022,
Volume and Issue:
20(1)
Published: March 29, 2022
Abstract
Background
A
comprehensive
analysis
of
gene
expression
profiling
across
tissues
can
provide
necessary
information
for
an
in-depth
understanding
their
biological
functions.
We
performed
a
large-scale
and
generated
high-resolution
atlas
the
transcriptome
in
beef
cattle.
Results
Our
was
from
135
bovine
adult
cattle,
covering
51
tissue
types
major
organ
systems
(e.g.,
muscular
system,
digestive
immune
reproductive
system).
Approximately
94.76%
sequencing
reads
were
successfully
mapped
to
reference
genome
assembly
ARS-UCD1.2.
detected
total
60,488
transcripts,
32%
them
not
reported
before.
identified
2654
housekeeping
genes
(HKGs)
477
tissue-specific
(TSGs)
tissues.
Using
weighted
co-expression
network
analysis,
we
obtained
24
modules
with
237
hub
(HUBGs).
Functional
enrichment
showed
that
HKGs
mainly
maintain
basic
activities
cells,
while
TSGs
involved
differentiation
specific
physiological
processes.
more
conserved
terms
pattern
as
compared
HUBGs
among
multiple
species.
Finally,
subset
differentially
expressed
(DEGs)
between
dairy
cattle
several
functional
pathways,
which
may
be
production
health
traits.
Conclusions
providing
valuable
enhancing
annotation.
HKGs,
TSGs,
further
contribute
better
biology
evolution
DEGs
also
fill
knowledge
gaps
about
differential
regulation
underlying
economically
important
Frontiers in Plant Science,
Journal Year:
2022,
Volume and Issue:
12
Published: Feb. 8, 2022
Cyclocarya
paliurus
is
a
medicinal
plant
containing
flavonoids,
triterpenoids,
polyphenolics,
polysaccharides,
and
other
compounds
with
diverse
biological
functions.
C.
distributed
across
altitudes
ranging
from
400
to
1,000
m.
However,
little
known
about
the
effect
of
altitude
on
metabolite
accumulation
in
paliurus.
Also,
biosynthetic
pathway
involved
flavonoid
has
not
been
fully
elucidated.
In
this
study,
mature
leaves
growing
at
low
(280
m)
high
(920
were
sampled
subjected
metabolomic
transcriptomic
analyses.
The
content
composition
higher
collected
than
those
altitude.
Most
differentially
accumulated
metabolites
(DAMs)
enriched
"flavone
flavonol
biosynthesis."
significant
expressed
genes
(DEGs)
between
mainly
"biological
process."
most
heavily
KEGG
was
related
subcategory
"Oxidative
phosphorylation,"
indicating
that
complicated
processes
are
response
harsh
environmental
factors.
High
UV-light
might
be
main
influencing
factor
among
factors
found
altitudes.
Integrated
analysis
data
showed
31
flavonoids
significantly
correlated
227
DEGs,
resulting
412
pairs
(283
positive
129
negative)
DEGs
flavonoids.
possible
mechanisms
underlying
different
due
variations
transport
relocation
leaves,
but
biosynthesis
pathways.
up-regulation
energy
protein
synthesis
contribute
This
study
broadens
our
understanding
Proceedings of the National Academy of Sciences,
Journal Year:
2021,
Volume and Issue:
118(13)
Published: March 22, 2021
Significance
Harsh
conditions
in
high
elevations
present
strong
stresses
for
organisms.
Previous
studies
targeting
phylogenetically
distinct
species
revealed
cases
of
diversified
adaptations,
but
it
remains
largely
unknown
how
common
ancestry
contributes
to
evolution
similar
adaptations.
Our
study
based
on
a
complex
(snowfinches)
living
Qinghai–Tibet
Plateau
shows
that
ancestral
snowfinches
had
phenotypically
evolved
larger
body
size
and
genetically
an
accelerated
selection
genes
related
development
signaling.
From
this
state
adaptation
three
descendants
have
undergone
independent
adaptive
processes
response
the
differences
selective
pressures
acting
them.
A
striking
example
is
DNA
repair
gene,
DTL
,
which
nonsynonymous
substitutions
evolving
ancestor
led
different
damage
kinetics.
Journal of Biogeography,
Journal Year:
2022,
Volume and Issue:
49(4), P. 640 - 653
Published: Feb. 24, 2022
Abstract
Aim
Mountains
harbour
a
rich
and
non‐random
cluster
of
species,
yet
knowledge
the
species'
biological
attributes
that
support
their
coexistence
in
montane
community
is
limited.
Here,
we
investigated
association
species
occurrence
on
Tibetan
Plateau
with
morphological,
ecological
or
evolutionary
constraints.
Location
(TP).
Taxon
Mammals
birds.
Methods
We
tested
whether
TP
correlates
constraints
using
spatial
distribution,
phylogeny,
dispersal
ability
thermal
niche
property
data
for
1353
terrestrial
vertebrates
(383
mammals
970
birds).
used
standard
(non‐phylogenetic)
phylogenetic
logistic
regressions
to
elucidate
relative
contributions
these
explaining
TP.
assessed
geographical
patterns
structures
fitted
linear
mixed
models
explore
underlying
eco‐evolutionary
forces.
Results
The
exhibited
higher
cold
tolerance,
wider
breadth
rate
evolution
than
non‐TP
species.
supported
assumption
were
not
random
subset
from
pool,
but
structured
jointly
by
environmental
filtering
limitation.
While
processes
assemblages
varied
spatially
among
taxa,
found
stressful
environments
limited
filtering,
whereas
limitation
was
more
pronounced
under
favourable
climatic
conditions.
Main
conclusions
Our
study
finds
shape
assemblage
These
findings
provide
significant
insights
into
assembly
other
ecosystems
Earth,
especially
those
are
sensitive
global
warming.
Frontiers in Genetics,
Journal Year:
2022,
Volume and Issue:
12
Published: Jan. 11, 2022
Gayal
and
yak
are
well
adapted
to
their
local
high-altitude
environments,
yet
the
transcriptional
regulation
difference
of
plateau
environment
among
them
remains
obscure.
Herein,
cross-tissue
cross-species
comparative
transcriptome
analyses
were
performed
for
six
hypoxia-sensitive
tissues
from
gayal,
yak,
cattle.
Gene
expression
profiles
all
single-copy
orthologous
genes
showed
tissue-specific
patterns.
By
differential
analysis,
we
identified
3,020
1,995
differentially
expressed
(DEGs)
in
at
least
one
tissue
gayal
vs.
cattle
cattle,
respectively.
Notably,
found
that
adaptability
alpine
canyon
is
highly
similar
living
Qinghai-Tibet
Plateau,
such
as
promoting
red
blood
cell
development,
angiogenesis,
reducing
coagulation,
immune
system
activation,
energy
metabolism
shifts
fatty
acid
β-oxidation
glycolysis.
further
analyzing
common
unique
DEGs
tissues,
also
numerous
regulatory
related
these
functions
which
may
play
important
roles
adapting
corresponding
environment.
Combined
with
WGCNA
UQCRC1
COX5A
shared
hub
supply
myocardial
contraction
heart-related
modules
CAPS
a
gene
lung-related
module,
pulmonary
artery
smooth
muscle
contraction.
Additionally,
EDN3
tracheal
epithelium
vasoconstriction
lung
gayal.
CHRM2
was
heart
has
an
role
autonomous
heart.
These
results
provide
basis
understanding
complex
pattern
mechanism
domestication
yak.