The
western
Eurasian-Mediterranean
grass
genus
Cynosurus,
comprising
about
11
species,
is
morphologically
well
delimited
by
the
regular
occurrence
of
conspicuous
sterile
spikelets
distal
to
fertile
ones
on
outer,
abaxial
side
inflorescences.
However,
our
molecular
phylogenetic
study
using
nuclear
ribosomal
DNA
(ITS,
ETS)
and
plastid
sequences
(trnL–F,
matK)
has
shown
that
not
monophyletic
in
its
current
delimitation,
but
consists
three
distinct
lineages.
These
lineages
were
found
be
closely
related
a
group
6–7
genera
taxonomically
assigned
subtribe
Parapholiinae.
Parapholiinae
consistently
analyses,
suggested
relationships
Cynosurus
varied
depending
particular
region
examined.
This
was
case
for
both
DNA,
with
cytonuclear
discordance
‘chloroplast
capture’
indicating
earlier
hybridization.
Interestingly,
hybridization
also
proved
most
likely
explanation
even
regard
18S–26S
cistrons
where
an
exceptional
evolutionary
divergence
between
ITS
ETS
found.
results
highlight
illustrate
important
role
evolution
grasses.
In
terms
taxonomy,
findings
argue
against
maintaining
polyphyletic
s.l.
instead
dividing
it
into
genera:
s.s.,
Falona,
which
reestablished
here,
Ciliochloa,
described
as
new
genus.
addition,
proposed
two
subtribes
Cynosurinae
combined
single
Cynosurinae,
monophyletic.
possible
genetic
background
formation
occasional
inflorescences
are
discussed.
New
combinations
Ciliochloa
effusa,
C.
effusa
var.
obliquata,
fertilis,
elegans,
gracilis,
turcomanica
Falona
colorata.
Journal of Integrative Plant Biology,
Год журнала:
2024,
Номер
66(3), С. 546 - 578
Опубликована: Янв. 30, 2024
Angiosperms
(flowering
plants)
are
by
far
the
most
diverse
land
plant
group
with
over
300,000
species.
The
sudden
appearance
of
angiosperms
in
fossil
record
was
referred
to
Darwin
as
"abominable
mystery,"
hence
contributing
heightened
interest
angiosperm
evolution.
display
wide
ranges
morphological,
physiological,
and
ecological
characters,
some
which
have
probably
influenced
their
species
richness.
evolutionary
analyses
these
characteristics
help
address
questions
diversification
require
well
resolved
phylogeny.
Following
great
successes
phylogenetic
using
plastid
sequences,
dozens
thousands
nuclear
genes
from
next-generation
sequencing
been
used
phylogenomic
analyses,
providing
phylogenies
new
insights
into
evolution
angiosperms.
In
this
review
we
focus
on
recent
large
clades,
orders,
families,
subdivisions
families
provide
a
summarized
Nuclear
Phylogenetic
Tree
Angiosperm
Families.
newly
established
relationships
highlighted
compared
previous
results.
sequenced
genomes
Amborella,
Nymphaea,
Chloranthus,
Ceratophyllum,
monocots,
Magnoliids,
basal
eudicots,
facilitated
phylogenomics
among
five
major
clades.
All
but
one
64
orders
were
included
except
placements
several
orders.
Most
robust
highly
supported
placements,
especially
for
within
important
families.
Additionally,
examine
divergence
time
estimation
biogeographic
basis
frameworks
discuss
differences
analyses.
Furthermore,
implications
ancestral
reconstruction
characters
groups,
limitations
current
studies,
taxa
that
future
attention.
Taxon,
Год журнала:
2023,
Номер
72(6), С. 1285 - 1302
Опубликована: Окт. 17, 2023
Abstract
In
this
comprehensive
study,
based
on
extensive
taxon
sampling,
we
performed
phylogenomic
analyses
of
plastome
and
nuclear
ribosomal
DNA
(nrDNA)
datasets.
We
employed
multiple
inference
methods,
including
concatenated
coalescent‐based
strategies,
to
generate
an
accurate
phylogeny
the
woody
Rosaceae
genus
Pourthiaea
.
The
nrDNA
strongly
supports
three
major
clades,
which
are
consistent
with
morphology.
However,
plastid
tree
provides
alternative
phylogenetic
topology,
indicating
cytonuclear
discordance
could
be
explained
by
frequent
hybridizations
between
among
species
Pourthiaea.
Considering
evidence
from
morphology
data,
propose
a
new
infrageneric
classification
for
,
consisting
sections:
P.
sect.
Amphidoxae
nov.,
Impressivenae
nov.
International Journal of Molecular Sciences,
Год журнала:
2025,
Номер
26(7), С. 3439 - 3439
Опубликована: Апрель 7, 2025
The
Araliaceae
family
has
significant
economic
and
medicinal
value.
However,
the
phylogenetic
relationships
expression
patterns
of
key
genes
active
triterpenoid
substance
within
this
are
still
unclear.
In
study,
we
employed
comparative
transcriptomics
to
analyze
transcriptomes
19
species
from
11
genera
Araliaceae,
aiming
elucidate
evolutionary
history
in
ginsenoside
biosynthesis
pathway.
Our
results
divide
into
two
subfamilies:
Aralioideae
Hydrocotyloideae.
is
further
classified
three
groups:
Aralia-Panax
group,
Polyscias-Pseudopanax
Asian
Palmate
group.
PhyloNet
analysis
reveals
that
common
ancestor
Panax
ginseng,
quinquefolius,
japonicus
was
an
allopolyploid,
likely
resulting
hybridization
between
notoginseng
pseudoginseng.
Additionally,
all
underwent
pg-β
event,
which
may
be
critical
for
biosynthesis.
We
discovered
exhibit
distinct
enzyme
(β-AS,
DDS,
CYP450,
UGTs)
compared
other
species.
These
show
independent
lineages
gene
trees,
suggesting
unique
functional
adaptations
enable
efficiently
synthesize
ginsenosides.
This
study
provides
a
theoretical
foundation
conservation
utilization
germplasm
resources.
Abstract
Ampelopsis
is
a
genus
of
the
grape
family
Vitaceae,
discontinuously
distributed
in
temperate
to
subtropical
zones
Northern
Hemisphere
but
mostly
diversified
East
Asia.
Previous
phylogenetic
studies
on
have
mainly
been
based
few
chloroplast
markers,
resulting
unresolved
relationships
for
Asian
taxa.
Here,
we
carried
out
reconstruction
and
intrageneric
reticulate
evolution
analyses
first
time
extensive
single
or
low‐copy
nuclear
genomic
data
obtained
by
Hyb‐Seq
approach.
Both
strongly
support
monophyly
with
its
sequential
division
into
several
lineages
corresponding
their
biogeographic
distribution
from
North
America
including
Mexico,
Europe
West
Asia,
respectively.
The
largely
grouped
two
major
clades
characterized
topological
conflicts
among
individual
gene
trees.
plastid
tree
also
showed
high
incongruence
Gene
estimation
error
flow
were
identified
as
source
within
lineage,
which
most
likely
resulted
recent
rapid
divergence.
Our
results
emphasize
that
divergence
accompanied
introgression
played
significant
role
complex
diversification
pattern
may
be
present
many
other
plant
Scientific Reports,
Год журнала:
2023,
Номер
13(1)
Опубликована: Дек. 15, 2023
The
Araliaceae
contain
many
valuable
species
in
medicinal
and
industrial
aspects.
We
performed
intensive
phylogenomics
using
the
plastid
genome
(plastome)
45S
nuclear
ribosomal
DNA
sequences.
A
total
of
66
plastome
sequences
were
used,
13
which
newly
assembled
this
study,
12
from
new
sequences,
one
existing
data.
While
plastomes
showed
conserved
structure,
phylogenetic
reconstructions
based
on
four
different
datasets
revealed
discordance
within
Asian
Palmate
group.
divergence
time
estimation
that
splits
two
subfamilies
clades
exhibiting
discordances
group
occurred
at
climatic
optima,
suggesting
global
warming
events
triggered
divergence,
particularly
rapid
diversification
during
Middle
Miocene.
Nucleotide
substitution
analyses
indicated
Hydrocotyloideae
have
undergone
accelerated
AT-biased
mutations
(C-to-T
transitions)
compared
with
Aralioideae
plastomes,
acceleration
may
occur
their
mitochondrial
genomes
as
well.
This
implies
members
genus
Hydrocotyle,
only
aquatic
plants
Araliaceae,
experienced
a
distinct
evolutionary
history
other
species.
also
discussed
intercontinental
disjunction
Panax
proposed
hypothesis
to
complement
previously
hypothesis.
Our
results
provide
trajectory
advance
our
current
understanding
evolution
Frontiers in Plant Science,
Год журнала:
2024,
Номер
15
Опубликована: Авг. 20, 2024
Alisma
L.
is
a
medicinally
important
genus
of
aquatic
and
wetland
plants
consisting
c.
10
recognized
species.
However,
largely
due
to
polyploidy
limited
taxon
gene
sampling,
the
phylogenomic
relationships
remain
challenging.
In
this
study,
we
sequenced
34
accessions
Alismataceae,
including
eight
ten
species
,
one
Echinodorus
Luronium
perform
comparative
analyses
plastid
genomes
phylogenetic
analyses.
Comparative
analysis
revealed
high
sequence
similarity
among
within
genus.
Our
study
analyzed
structural
changes
variations
in
plastomes
IR
expansion
or
contraction,
duplication
loss.
Phylogenetic
results
suggest
that
monophyletic,
constitutes
four
groups:
(1)
A.
lanceolatum
canaliculatum
;
(2)
North
American
clade
subcordatum
triviale
(3)
wahlenbergii
gramineum
(4)
plantago-aquatica
from
Eurasia
northern
Africa
with
eastern
Asian
orientale
nested
it.
Hence
challenge
recognition
as
distinct
raise
possibility
treating
it
synonym
widespread
.
The
well-known
Alismatis
Rhizoma
(Zexie)
Chinese
medicine
was
likely
derived
morphologically
variable
throughout
its
long
history
cultivation
Asia.
plastome
also
support
tetraploid
maternal
parent
hexaploid
Journal of Systematics and Evolution,
Год журнала:
2024,
Номер
63(1), С. 99 - 114
Опубликована: Ноя. 11, 2024
Abstract
Panax
(Araliaceae)
is
a
small
genus
containing
several
well
known
medicinally
important
species.
It
has
disjunct
distribution
between
Eastern
Asia
and
North
America,
with
most
species
from
eastern
Asia,
especially
the
Himalayan‐Hengduan
Mountains
(HHM).
This
study
used
genomic
target
enrichment
method
to
obtain
358
nuclear
ortholog
loci
complete
plastome
sequences
59
accessions
representing
all
18
of
genus.
Divergence
time
estimation
biogeographic
analyses
suggest
that
was
probably
widely
distributed
America
during
middle
Eocene.
During
late
Eocene
Oligocene
may
have
experienced
extensive
extinctions
global
climate
cooling.
survived
diverged
early
in
mountains
Southwest
China
tropical
Indochina,
where
some
taxa
migrated
northwestward
HHM,
eastward
central
China,
then
onward
toward
Japan
America.
Gene
flow
identified
as
main
contributor
phylogenetic
discordance
(33.46%)
within
.
We
hypothesize
common
ancestors
P.
ginseng
+
japonicus
quinquefolius
clade
had
allopolyploidization,
which
increased
adaptability
cooler
drier
environments.
Miocene,
dispersals
occurred
region
HHM
contiguous
areas,
suggesting
acted
refugium
also
served
secondary
diversification
center
for
Our
findings
highlight
interplay
orographic
uplift
climatic
changes
greatly
contributed
diversity
