Freshwater sponges in the southeastern U.S. harbor unique microbiomes that are influenced by host and environmental factors
J. Keleher,
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Taylor A. Strope,
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Noah E. Estrada
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et al.
PeerJ,
Journal Year:
2025,
Volume and Issue:
13, P. e18807 - e18807
Published: Jan. 30, 2025
Marine,
and
more
recently,
freshwater
sponges
are
known
to
harbor
unique
microbial
symbiotic
communities
relative
the
surrounding
water;
however,
our
understanding
of
ecology
diversity
is
vastly
limited
compared
those
marine
sponges.
Here
we
analyzed
microbiomes
three
sponge
species:
Radiospongilla
crateriformis
,
Eunapius
fragilis
Trochospongilla
horrida
across
four
sites
in
western
North
Carolina,
U.S.A.
Our
results
support
recent
work
indicating
that
indeed
a
distinct
microbiome
composition
water
these
varied
sampling
site
both
environmental
host
factors
shaping
this
community.
We
also
sampled
at
one
over
3
months
observed
divergence
community
between
occurs
least
several
weeks
after
emerge
for
growing
season
maintain
from
as
tissue
degrades.
Bacterial
taxa
within
Gammproteobacteria,
Alphproteobacteria,
Bacteroidota
(Flavobacteriia
particular),
Verrucomicrobia,
were
notable
enriched
individuals
with
diverging
water.
These
add
novel
information
on
assembly
maintenance
an
ancient
metazoan
few
published
studies
symbiont
communities.
Language: Английский
A morphological cell atlas of the freshwater sponge Ephydatia muelleri with key insights from targeted single-cell transcriptomes
EvoDevo,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 14, 2025
How
animal
cell
types,
tissues,
and
regional
body
plans
arose
is
a
fundamental
question
in
EvoDevo.
Many
current
efforts
attempt
to
link
genetic
information
the
morphology
of
cells,
tissues
regionalization
using
single-cell
sequencing
populations.
However,
lack
in-depth
understanding
non-bilaterian
animals
remains
considerable
block
transitions
between
bilaterian
cells
tissues.
Sponges
(Porifera),
one
earliest
diverging
phyla,
pose
particular
challenge
this
endeavour,
because
their
mouths,
gut,
conventional
muscle
nervous
systems.
With
goal
help
bridge
gap,
we
have
studied
morphology,
behaviour
transcriptomics
tissue
types
an
easily
accessible
well-studied
species
freshwater
sponge,
Ephydatia
muelleri.
New
features
described
here
include:
polarized
external
epithelium,
new
contractile
sieve
that
forms
entry
incurrent
canals,
motile
cilia
on
apopyle
at
exit
choanocyte
chambers,
non-motile
excurrent
canals
oscula.
Imaging
vivo
shows
distinct
behavioural
characteristics
mesohyl.
Transcriptomic
phenotypes
three
(cystencytes,
choanocytes
archaeocytes)
captured
live
indicate
cell-type
transcriptomes
are
distinct.
Importantly,
individual
archaeocytes
show
range
transcriptomic
which
supported
by
expression
different
genes
subsets
type.
In
contrast,
all
five
sampled
revealed
highly
uniform
with
significantly
fewer
expressed
than
other
types.
Our
study
sponges
whose
diversity
both
functionally
complex,
but
together
enable
like
metazoans,
sense
respond
stimuli.
Language: Английский
Microbiome and pollutants in the freshwater sponges Ephydatia muelleri (Lieberkühn, 1856) and Spongilla lacustris (Linnaeus, 1758) from the sub-Arctic Pasvik River (Northern Fennoscandia)
Environmental Research,
Journal Year:
2025,
Volume and Issue:
unknown, P. 121126 - 121126
Published: Feb. 1, 2025
Language: Английский
Genome-based reclassification of the family Stappiaceae and assessment of environmental forcing with the report of two novel taxa, Flexibacterium corallicola gen. nov., sp. nov., and Nesiotobacter zosterae sp. nov., isolated from coral and seagrass
Mi-Jeong Park,
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Jin Nam Kim,
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Yun Jae Kim
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et al.
PLoS ONE,
Journal Year:
2025,
Volume and Issue:
20(5), P. e0322500 - e0322500
Published: May 15, 2025
Two
novel
strains,
MaLMAid0302
T
and
SPO723
,
isolated
from
coral
eelgrass,
respectively,
were
distinguished
other
Stappiaceae
species
based
on
phenotypic,
biochemical,
phylogenetic,
chemotaxonomic
traits.
Taxonomic
challenges
within
the
family
addressed
using
a
taxogenomic
approach
with
iterative
clustering,
establishing
an
optimal
average
amino
acid
identity
(AAI)
threshold
(71.92–72.88%)
for
genus
delineation.
This
analysis
led
to
major
taxonomic
revisions,
including
establishment
of
new
genera—
Parapolycladidibacter
Astericibacter
Flexibacterium
Aliiroseibium
Laciiroseibium
Soliroseibium
Novilabrenzia
Litoriroseibium
Algilabrenzia
—as
well
as
reassignment
several
species:
Hongsoonwoonella
albiluteola
comb.
nov.,
stylochi
gen.
flavus
Nesiotobacter
exalbescens
hamelinense
aquae
sediminis
suaedae
litorale
aestuarii
limicola
polysiphoniae
nov.
Given
this
extensive
reclassification
strain
(=KCCM
42324
=
JCM
14066
)
was
classified
zosterae
sp.
corallicola
(=KCTC
92348
35474
designated
type
newly
established
.
Close
phylogenetic
ties
Pseudovibrio
known
symbiosis,
prompted
niche-specific
genetic
compositions.
Canonical
Correspondence
Analysis
attributed
64%
genomic
variation
forcing
36%
environmental
forcing.
Functional
adaptations
included
pectin
aromatic
compound
degradation
in
sediment
nitrogen
reduction
flatworm
sulfur
metabolism
strains.
The
eelgrass
exhibited
dTDP-L-rhamnose
synthesis,
potentially
aiding
biofilm
formation
adhesion
dynamic
environments.
These
findings
emphasize
roles
both
shaping
diversity
highlight
ecological
importance
marine
habitat-associated
niches.
Language: Английский
Freshwater Sponges as a Neglected Reservoir of Bacterial Biodiversity
Microorganisms,
Journal Year:
2023,
Volume and Issue:
12(1), P. 25 - 25
Published: Dec. 22, 2023
Freshwater
sponges
(Spongillida:
Demospongiae),
including
more
than
240
described
species,
are
globally
distributed
in
continental
waters
(except
for
Antarctica),
where
they
cover
both
natural
and
artificial
surfaces.
However,
fragmentary
studies
have
targeted
their
microbiome,
making
it
difficult
to
test
hypotheses
about
sponge-microbe
specificity
metabolic
relationships,
along
with
the
environmental
factors
playing
key
roles
structuring
associated
microbial
communities.
To
date,
particular
attention
has
been
paid
(family
Lubomirskiidae)
that
endemic
Lake
Baikal.
Few
other
freshwater
sponge
species
(e.g.,
Ephydatia
spp.,
Eunapius
Spongilla
lacustris),
from
lakes
rivers
spanning
Europe
South
North
America,
microbiological
studies.
Representatives
of
phyla
Proteobacteria,
Bacteroidetes,
Actinobacteria
largely
predominated,
high
differences
were
reported
between
microbiome
marine
sponges.
Several
bacterial
strains
isolated
can
produce
bioactive
compounds,
mainly
showing
antibiotic
activities,
potential
application
biotechnology.
Understanding
played
by
microbiomes
ecosystems
is
still
its
infancy
yet
be
clarified
disentangle
ecological
evolutionary
significance
these
under-investigated
This
review
was
aimed
at
providing
main
available
information
on
composition
biotechnological
prokaryotic
communities
healthy
sponges,
as
a
neglected
component
global
stimulate
researchers
interested
field.
Language: Английский
Dynamics, diversity, and roles of bacterial transmission modes during the first asexual life stages of the freshwater sponge Spongilla lacustris
Benoît Paix,
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Elodie van der Valk,
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Nicole J. de Voogd
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et al.
Environmental Microbiome,
Journal Year:
2024,
Volume and Issue:
19(1)
Published: June 8, 2024
Sponge-associated
bacteria
play
important
roles
in
the
physiology
of
their
host,
whose
recruitment
processes
are
crucial
to
maintain
symbiotic
associations.
However,
acquisition
bacterial
communities
within
freshwater
sponges
is
still
under
explored.
Spongilla
lacustris
a
model
sponge
widely
distributed
European
rivers
and
lakes,
producing
dormant
cysts
(named
gemmules)
for
asexual
reproduction,
before
winter.
Through
an
vitro
experiment,
this
study
aims
describe
dynamics
transmission
modes
following
hatching
these
gemmules.
Language: Английский
Anomalies of Sponge Spicules: Exploring Links to Environmental Pollution
Water,
Journal Year:
2024,
Volume and Issue:
16(2), P. 332 - 332
Published: Jan. 19, 2024
The
aim
of
this
study
was
to
assess
the
frequency
spicule
malformations
in
freshwater
sponges
relation
selected
environmental
parameters
streams
and
presence
river
pollutants.
A
total
50
sponge
samples
were
collected
from
ten
rivers
Serbia.
Selected
water
varied
considerably
at
every
site
where
found.
After
preparation,
subjected
morphological
analysis
by
light
scanning
electron
microscopy,
number
anomalies
recorded
(spicules
with
bulbous
enlargements,
sharply
bent,
bifurcated,
scissor-
cross-like,
t-shaped).
frequencies
types
within
analyzed
specimens
1
100
per
1000
spicules,
an
average
12
1000.
main
single-
double-bent
spicules.
highest
found
a
specimen
Eunapius
fragilis
Markovac
(Velika
Morava
River),
lowest
Ephydatia
fluviatilis
Kanjiža
(Tisa
River).
sites
numbers
showed
statistically
significant
differences
concentrations
ammonia,
orthophosphates,
sodium,
chloride,
manganese,
lead.
This
indicates
that
several
pollutants
potentially
affect
occurrence
anomalies.
Language: Английский