Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(25)
Опубликована: Июнь 14, 2024
Life
harnessing
light
energy
transformed
the
relationship
between
biology
and
Earth—bringing
a
massive
flux
of
organic
carbon
oxidants
to
Earth’s
surface
that
gave
way
today’s
organotrophy-
respiration-dominated
biosphere.
However,
our
understanding
how
life
drove
this
transition
has
largely
relied
on
geological
record;
much
remains
unresolved
due
complexity
paucity
genetic
record
tied
photosynthesis.
Here,
through
holistic
phylogenetic
comparison
bacterial
domain
all
photosynthetic
machinery
(totally
spanning
>10,000
genomes),
we
identify
evolutionary
congruence
three
independent
biological
systems—bacteria,
(bacterio)chlorophyll-mediated
metabolism
(chlorophototrophy),
fixation—and
uncover
their
intertwined
history.
Our
analyses
uniformly
mapped
progenitors
extant
light-metabolizing
(reaction
centers,
[bacterio]chlorophyll
synthases,
magnesium-chelatases)
enzymes
facilitating
Calvin–Benson–Bassham
cycle
(form
I
RuBisCO
phosphoribulokinase)
same
ancient
Terrabacteria
organism
near
base
domain.
These
phylogenies
consistently
showed
phototrophs
ultimately
derived
from
bacterium,
last
phototroph
common
ancestor
(LPCA).
LPCA
was
non-oxygen-generating
(anoxygenic)
already
possessed
fixation
two
reaction
type
analogous
forms
primitive
II.
Analyses
also
indicate
chlorophototrophy
originated
before
LPCA.
We
further
reconstructed
evolution
chlorophototrophs/chlorophototrophy
post-LPCA,
including
vertical
inheritance
in
Terrabacteria,
rise
oxygen-generating
one
descendant
branch
Great
Oxidation
Event,
subsequent
emergence
Cyanobacteria.
collectively
unveil
detailed
view
coevolution
Bacteria
having
clear
with
record.
Environmental Microbiome,
Год журнала:
2021,
Номер
16(1)
Опубликована: Дек. 1, 2021
The
highly
diverse
Cand.
Patescibacteria
are
predicted
to
have
minimal
biosynthetic
and
metabolic
pathways,
which
hinders
understanding
of
how
their
populations
differentiate
in
response
environmental
drivers
or
host
organisms.
Their
mechanisms
employed
cope
with
oxidative
stress
largely
unknown.
Here,
we
utilized
genome-resolved
metagenomics
investigate
the
adaptive
genome
repertoire
oxic
anoxic
groundwaters,
infer
putative
ranges.Within
six
groundwater
wells,
was
most
dominant
(up
79%)
super-phylum
across
32
metagenomes
sequenced
from
DNA
retained
on
0.2
0.1
µm
filters
after
sequential
filtration.
Of
reconstructed
1275
metagenome-assembled
genomes
(MAGs),
291
high-quality
MAGs
were
classified
as
Patescibacteria.
Paceibacteria
Microgenomates
enriched
exclusively
fractions,
whereas
candidate
division
ABY1
Gracilibacteria
fractions.
On
average,
smaller
filter
fractions
had
22%
genomes,
13.4%
lower
replication
measures,
higher
proportion
rod-shape
determining
proteins,
genomic
features
suggesting
type
IV
pili
mediated
cell-cell
attachments.
Near-surface
wells
harbored
rates
than
downstream
characterized
by
longer
water
residence
time.
Except
prevalence
superoxide
dismutase
genes
groundwaters
(83%),
no
major
phylogenetic
differences
observed.
abundant
MAG
encoded
a
nitrate
transporter,
nitrite
reductase,
F-type
ATPase,
an
alternative
energy
conservation
mechanism.
consistently
co-occurred
one
another
members
phyla
Nanoarchaeota,
Bacteroidota,
Nitrospirota,
Omnitrophota.
Among
fractions,,
only
8%
showed
significant
one-to-one
correlation,
mostly
Motility
transport
related
certain
similar
other
(Omnitrophota,
Proteobacteria
Nanoarchaeota).Other
stress,
found
little
evidence
for
niche
adaptation
groundwaters.
Given
that
could
detect
specific
preference
few
MAGs,
speculate
majority
is
able
attach
multiple
hosts
just
long
enough
loot
exchange
supplies.
BMC Ecology and Evolution,
Год журнала:
2022,
Номер
22(1)
Опубликована: Янв. 5, 2022
The
recent
rise
in
cultivation-independent
genome
sequencing
has
provided
key
material
to
explore
uncharted
branches
of
the
Tree
Life.
This
been
particularly
spectacular
concerning
Archaea,
projecting
them
at
center
stage
as
prominently
relevant
understand
early
stages
evolution
and
emergence
fundamental
metabolisms
well
origin
eukaryotes.
Yet,
resolving
deep
divergences
remains
a
challenging
task
due
well-known
tree-reconstruction
artefacts
biases
extracting
robust
ancient
phylogenetic
signal,
notably
when
analyzing
data
sets
including
three
Domains
Among
various
strategies
aimed
mitigating
these
problems,
divide-and-conquer
approaches
remain
poorly
explored,
have
primarily
based
on
reconciliation
among
single
gene
trees
which
however
notoriously
lack
signal.We
analyzed
sub-sets
full
supermatrices
covering
whole
Life
with
specific
taxonomic
sampling
robustly
resolve
different
parts
archaeal
phylogeny
light
their
current
diversity.
Our
results
strongly
support
existence
two
main
clades,
Cluster
I
II,
we
name
Ouranosarchaea
Gaiarchaea,
clarify
placement
important
novel
lineages
within
clades.
However,
monophyly
branching
fast
evolving
nanosized
DPANN
members
unclear
worth
further
study.We
inferred
resolved
rooted
Archaea
that
includes
all
recently
described
phyla
high
rank.
represents
valuable
reference
study
evolutionary
events
associated
steps
diversification
domain.
Beyond
specifics
phylogeny,
our
demonstrate
power
relationships,
should
be
applied
progressively
entire
Nature Communications,
Год журнала:
2023,
Номер
14(1)
Опубликована: Ноя. 17, 2023
Abstract
The
timing
of
early
cellular
evolution,
from
the
divergence
Archaea
and
Bacteria
to
origin
eukaryotes,
is
poorly
constrained.
ATP
synthase
complex
thought
have
originated
prior
Last
Universal
Common
Ancestor
(LUCA)
analyses
genes,
together
with
ribosomes,
played
a
key
role
in
inferring
rooting
tree
life.
We
reconstruct
evolutionary
history
synthases
using
an
expanded
taxon
sampling
set
develop
phylogenetic
cross-bracing
approach,
constraining
equivalent
speciation
nodes
be
contemporaneous,
based
on
imprint
endosymbioses
ancient
gene
duplications.
This
approach
results
highly
resolved,
dated
species
establishes
absolute
timeline
for
evolution.
Our
show
that
into
F-
A/V-type
lineages
was
very
event
evolution
dating
back
more
than
4
Ga,
potentially
predating
diversification
Bacteria.
cross-braced,
life
also
provides
insight
recent
transitions
including
eukaryogenesis,
showing
eukaryotic
nuclear
mitochondrial
diverged
their
closest
archaeal
(2.67-2.19
Ga)
bacterial
(2.58-2.12
relatives
at
approximately
same
time,
slightly
longer
stem-lineage.
Nature Microbiology,
Год журнала:
2023,
Номер
8(1), С. 40 - 54
Опубликована: Янв. 5, 2023
Abstract
Chlamydiae
is
a
bacterial
phylum
composed
of
obligate
animal
and
protist
endosymbionts.
However,
other
members
the
Planctomycetes–Verrucomicrobia–Chlamydiae
superphylum
are
primarily
free
living.
How
transitioned
to
an
endosymbiotic
lifestyle
still
largely
unresolved.
Here
we
reconstructed
species
relationships
modelled
genome
evolution.
Gene
content
reconstruction
from
11,996
gene
families
suggests
motile
facultatively
anaerobic
last
common
ancestor
that
had
already
gained
characteristic
endosymbiont
genes.
Counter
expectations
for
streamlining
in
strict
endosymbionts,
detected
substantial
gain
within
Chlamydiae.
We
found
divergence
energy
metabolism
aerobiosis
observed
extant
lineages
emerged
later
during
chlamydial
In
particular,
metabolic
aerobic
genes
more
metabolically
versatile
protist-infecting
chlamydiae
were
gained,
such
as
respiratory
chain
complexes.
Our
results
show
complexity
can
increase
evolution,
adding
additional
perspective
understanding
symbiont
evolutionary
trajectories
across
tree
life.
Annual Review of Plant Biology,
Год журнала:
2023,
Номер
74(1), С. 225 - 257
Опубликована: Март 8, 2023
Photosystem
II
is
the
water-oxidizing
and
O2-evolving
enzyme
of
photosynthesis.
How
when
this
remarkable
arose
are
fundamental
questions
in
history
life
that
have
remained
difficult
to
answer.
Here,
recent
advances
our
understanding
origin
evolution
photosystem
reviewed
discussed
detail.
The
indicates
water
oxidation
originated
early
life,
long
before
diversification
cyanobacteria
other
major
groups
prokaryotes,
challenging
transforming
current
paradigms
on
We
show
has
virtually
unchanged
for
billions
years,
yet
nonstop
duplication
process
D1
subunit
II,
which
controls
photochemistry
catalysis,
enabled
become
adaptable
variable
environmental
conditions
even
innovate
enzymatic
functions
beyond
oxidation.
suggest
evolvability
can
be
harnessed
develop
novel
light-powered
enzymes
with
capacity
carry
out
complex
multistep
oxidative
transformations
sustainable
biocatalysis.
The
crossing
of
environmental
barriers
poses
major
adaptive
challenges.
Rareness
freshwater-marine
transitions
separates
the
bacterial
communities,
but
how
these
are
related
to
brackish
counterparts
remains
elusive,
as
do
molecular
adaptations
facilitating
cross-biome
transitions.
We
conducted
large-scale
phylogenomic
analysis
freshwater,
brackish,
and
marine
quality-filtered
metagenome-assembled
genomes
(11,248).
Average
nucleotide
identity
analyses
showed
that
species
rarely
existed
in
multiple
biomes.
In
contrast,
distinct
basins
cohosted
numerous
species,
their
intraspecific
population
structures
displayed
clear
signs
geographic
separation.
further
identified
most
recent
transitions,
which
were
rare,
ancient,
commonly
directed
toward
biome.
Transitions
accompanied
by
systematic
changes
amino
acid
composition
isoelectric
point
distributions
inferred
proteomes,
evolved
over
millions
years,
well
convergent
gains
or
losses
specific
gene
functions.
Therefore,
challenges
entailing
proteome
reorganization
content
constrains
resulting
species-level
separation
between
aquatic