Philosophical Transactions of the Royal Society B Biological Sciences,
Год журнала:
2024,
Номер
379(1914)
Опубликована: Сен. 29, 2024
Sexual
reproduction
in
Charophyceae
abounds
complex
traits.
Their
gametangia
develop
as
intricate
structures,
with
oogonia
spirally
surrounded
by
envelope
cells
and
richly
pigmented
antheridia.
The
red—probably
protectant—pigmentation
of
antheridia
is
conserved
across
Charophyceae.
Chara
tomentosa
is,
however,
unique
exhibiting
this
pigmentation
also
vegetative
tissue.
Here,
we
investigated
the
two
sympatric
species,
C.
baltica
,
compared
their
molecular
chassis
for
pigmentation.
Using
reversed
phase
C
30
high
performance
liquid
chromatography
(RP-C
-HPLC),
uncover
that
major
pigments
are
β-carotene,
δ-carotene
γ-carotene;
using
headspace
solid-phase
microextraction
coupled
to
gas
equipped
a
mass
spectrometer
(HS-SPME-GC-MS),
pinpoint
unusually
large
carotenoid
pool
gives
rise
diverse
volatile
apocarotenoids,
including
abundant
6-methyl-5-hepten-2-one.
Based
on
transcriptome
analyses,
signatures
biology
Charophycaee
genes
pigment
production,
monocyclized
carotenoids.
rich
probably
serves
substrate
carotenoid-derived
metabolites,
signified
not
only
(i)
apocarotenoids
detected
but
(ii)
expression
gene
coding
cytochrome
P450
enzyme
related
land
plant
proteins
involved
biosynthesis
hormones.
Overall,
our
data
shed
light
key
protection
strategy
sexual
widespread
group
macroalgae.
genetic
underpinnings
shared
hundreds
millions
years
algal
evolution.
This
article
part
theme
issue
‘The
evolution
metabolism’.
Nature Genetics,
Год журнала:
2024,
Номер
56(5), С. 1018 - 1031
Опубликована: Май 1, 2024
Abstract
Zygnematophyceae
are
the
algal
sisters
of
land
plants.
Here
we
sequenced
four
genomes
filamentous
Zygnematophyceae,
including
chromosome-scale
assemblies
for
three
strains
Zygnema
circumcarinatum
.
We
inferred
traits
in
ancestor
and
plants
that
might
have
ushered
conquest
by
plants:
expanded
genes
signaling
cascades,
environmental
response,
multicellular
growth.
share
all
major
enzymes
cell
wall
synthesis
remodifications,
gene
gains
shaped
this
toolkit.
Co-expression
network
analyses
uncover
cohorts
unite
with
developmental
programs.
Our
data
shed
light
on
a
molecular
chassis
balances
response
growth
modulation
across
more
than
600
million
years
streptophyte
evolution.
Annals of Botany,
Год журнала:
2024,
Номер
134(3), С. 385 - 400
Опубликована: Июнь 4, 2024
Abstract
The
Streptophyta
emerged
about
a
billion
years
ago.
Nowadays,
this
branch
of
the
green
lineage
is
most
famous
for
one
its
clades,
land
plants
(Embryophyta).
Although
Embryophyta
make
up
major
share
species
numbers
in
Streptophyta,
there
diversity
probably
>5000
streptophyte
algae
that
form
paraphyletic
grade
next
to
plants.
Here,
we
focus
on
deep
divergences
gave
rise
streptophytes,
hence
particularly
algae.
Phylogenomic
efforts
have
not
only
clarified
position
relative
plants,
but
recent
also
begun
unravel
relationships
and
radiations
within
algal
diversity.
We
illustrate
how
new
phylogenomic
perspectives
changed
our
view
evolutionary
emergence
key
traits,
such
as
intricate
signalling
networks
are
intertwined
with
multicellular
growth
chemodiverse
hotbed
from
which
they
emerged.
These
traits
biology
were
bequeathed
their
progenitors.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 13, 2024
ABSTRACT
The
earliest
land
plants
faced
a
significant
challenge
in
adapting
to
environmental
stressors.
Stress
on
is
unique
its
dynamics,
entailing
swift
and
drastic
changes
light
temperature.
While
we
know
that
share
with
their
closest
streptophyte
algal
relatives
key
components
of
the
genetic
makeup
for
dynamic
stress
responses,
concerted
action
little
understood.
Here,
combined
time-course
profiling
using
photophysiology,
transcriptomics
2.7
Tbp
data,
metabolite
analyses
more
than
270
distinct
samples,
study
kinetics
across
three
600-million-year-divergent
streptophytes.
Through
co-expression
analysis
Granger
causal
inference
predict
gene
regulatory
network
retraces
web
ancient
signal
convergence
at
ethylene
signaling
components,
osmosensors,
chains
major
kinases.
These
kinase
hubs
already
integrated
diverse
inputs
since
before
dawn
land.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Дек. 30, 2024
The
Auxin
Response
Factors
(ARFs)
family
of
transcription
factors
are
the
central
mediators
auxin-triggered
transcriptional
regulation.
Functionally
different
classes
extant
ARFs
operate
as
antagonistic
auxin-dependent
and
-independent
regulators.
While
part
evolutionary
trajectory
to
present
auxin
response
functions
has
been
reconstructed,
it
is
unclear
how
emerged,
early
diversification
led
functionally
proteins.
Here,
we
use
in
silico
vivo
analyses
revisit
molecular
events
that
origin
subsequent
evolution
ARFs.
We
reveal
shared
from
preexisting
domains,
uncovering
a
protein
fold
homologous
ARF
DNA-binding
conserved
eukaryotic
chromatin
regulator.
Building
on
this,
reconstruct
complete
history
ARFs,
including
divergence
leading
appearance
defining
main
targets
for
their
functional
diversification.
derive
emergence
nuclear
signalling
pathway.
Physiologia Plantarum,
Год журнала:
2024,
Номер
176(2)
Опубликована: Март 1, 2024
Abstract
Land
plants
have
diversified
enzyme
families.
One
of
the
most
prominent
is
cytochrome
P450
(CYP
or
CYP450)
family.
With
over
443,000
CYP
proteins
sequenced
across
tree
life,
CYPs
are
ubiquitous
in
archaea,
bacteria,
and
eukaryotes.
Here,
we
focused
on
land
algae
to
study
role
diversification.
CYPs,
acting
as
monooxygenases,
catalyze
hydroxylation
reactions
crucial
for
specialized
plant
metabolic
pathways,
including
detoxification
phytohormone
production;
CYPome
consists
one
enormous
superfamily
that
divided
into
clans
Their
evolutionary
history
speaks
high
substrate
promiscuity;
radiation
functional
diversification
yielded
numerous
To
understand
relationships
within
employed
sequence
similarity
network
analyses.
We
recovered
distinct
clusters
representing
different
families,
reflecting
their
sequences
link
prediction
functionalities.
Hierarchical
clustering
phylogenetic
analysis
further
elucidated
between
clans,
uncovering
shared
deep
history.
explored
distribution
subfamilies
algal
lineages,
novel
candidates
providing
insights
evolution
these
This
identified
unexpected
such
CYP82
CYP74,
shedding
light
roles
defense
signaling
pathways.
Our
approach
provides
a
methodology
brings
emergence
new
functions
CYP450
family,
contributing
algae.
These
can
be
validated
implemented
via
experimental
setups
under
various
external
conditions.
Environmental Microbiology,
Год журнала:
2025,
Номер
27(1)
Опубликована: Янв. 1, 2025
ABSTRACT
Streptofilum
capillatum
was
recently
described
and
immediately
caught
scientific
attention,
because
it
forms
a
phylogenetically
deep
branch
in
the
streptophytes
is
characterised
by
unique
cell
coverage
composed
of
piliform
scales.
Its
phylogenetic
position
taxonomic
rank
are
still
controversial
discussed.
In
present
study,
we
isolated
further
strains
from
biocrusts
sand
dunes
Arctic
tundra
soil.
Molecular
morphological
characterisation
including
transmission
electron
microscopy
confirmed
that
both
new
belong
to
.
The
strain
as
species,
arcticum
sp.
nov.,
based
on
molecular
differences,
specific
sarcinoid
morphology
ultrastructure
with
massive
pili‐shaped
A
comprehensive
ecophysiological
traits
isolates
original
one
revealed
broad
temperature
tolerance,
rapid
recovery
photosynthetic
performance
after
desiccation,
an
efficient
photosynthesis
at
low
light
tolerance
high‐light
conditions.
addition,
could
cope
UV
irradiation,
but
only
S.
grew
under
exposure.
All
well‐adapted
water‐deprived
terrestrial
habitats
such
biocrusts.
From
this
study
can
be
concluded
already
early‐branching
were
able
tolerate
Nature Communications,
Год журнала:
2025,
Номер
16(1)
Опубликована: Фев. 19, 2025
Abstract
The
earliest
land
plants
faced
a
significant
challenge
in
adapting
to
environmental
stressors.
Stress
on
is
unique
its
dynamics,
entailing
swift
and
drastic
changes
light
temperature.
While
we
know
that
share
with
their
closest
streptophyte
algal
relatives
key
components
of
the
genetic
makeup
for
dynamic
stress
responses,
concerted
action
little
understood.
Here,
combine
time-course
profiling
using
photophysiology,
transcriptomics
2.7
Tbp
data,
metabolite
analyses
270
distinct
samples,
study
kinetics
across
three
600-million-year-divergent
streptophytes.
Through
co-expression
analysis
Granger
causal
inference
predict
gene
regulatory
network
retraces
web
ancient
signal
convergences
at
ethylene
signaling
components,
osmosensors,
chains
major
kinases.
These
kinase
hubs
already
integrated
diverse
inputs
since
before
dawn
land.
