Comparative genomics of Elusimicrobiaceae (phylum Elusimicrobiota) and description of the isolates Elusimicrobium simillimum sp. nov., Elusimicrobium posterum sp. nov., and Parelusimicrobium proximum gen. Nov. sp. nov.
Systematic and Applied Microbiology,
Journal Year:
2025,
Volume and Issue:
48(3), P. 126606 - 126606
Published: April 13, 2025
The
tree
of
life
comprises
many
deep-branching
lineages
with
no
or
only
very
few
cultured
representatives.
One
such
lineage
is
the
phylum
Elusimicrobiota,
which
contains
two
described
species
and
whose
biology
has
been
poorly
explored.
We
isolated
three
new
from
this
intestinal
tracts
cockroaches.
Like
their
closest
relative,
Elusimicrobium
minutum,
member
family
Elusimicrobiaceae
to
date,
they
are
small,
pleomorphic
gram-negative
rods
characterized
by
a
distinct
cell
cycle,
like
all
ultramicrobacteria,
pass
through
0.22-μm
filter
membrane.
Physiological
characterization
isolates
revealed
that
obligately
anaerobic
fermenters
lack
catalase
cytochrome
c
oxidase
activities
but
can
remove
oxygen
environment
in
non-respiratory
manner.
Their
substrate
range
limited
hexoses,
as
d-glucose,
d-galactose,
N-acetyl-d-glucosamine,
fermented
lactate,
acetate,
ethanol,
hydrogen
major
products.
Comparative
genome
analysis,
included
more
than
100
MAGs
uncultured
Elusimicrobiaceae,
underlying
metabolic
pathways
outlined
phylogenomic
framework
family.
Based
on
phylogenomic,
physiological,
morphological
evidence,
we
describe
Parelusimicrobium
proximum
gen.
nov.,
sp.
posterum
simillimum
nov.
under
rules
ICNP.
high-quality
genomes
representatives,
propose
comprehensive
taxonomy
SeqCode,
including
genera
Avelusimicrobium,
Proelusimicrobium,
candidate
genus
"Pseudelusimicrobium".
Language: Английский
SeqCode in the golden age of prokaryotic systematics
The ISME Journal,
Journal Year:
2024,
Volume and Issue:
18(1)
Published: Jan. 1, 2024
Abstract
The
SeqCode
is
a
new
code
of
prokaryotic
nomenclature
that
was
developed
to
validate
taxon
names
using
genome
sequences
as
the
type
material.
present
article
provides
an
independent
view
about
SeqCode,
highlighting
its
history,
current
status,
basic
features,
pros
and
cons,
use
date.
We
also
discuss
important
topics
consider
for
validation
novel
genomes
Owing
significant
advances
in
metagenomics
cultivation
methods,
hundreds
species
are
expected
be
discovered
coming
years.
This
manuscript
aims
stimulate
enrich
debate
around
upcoming
golden
age
discovery
systematics.
Language: Английский