Aquatic Conservation Marine and Freshwater Ecosystems,
Год журнала:
2025,
Номер
35(2)
Опубликована: Фев. 1, 2025
ABSTRACT
Molecular
traces
are
increasingly
being
applied
to
assess
the
presence
of
species
and
communities.
Studies
on
environmental
DNA
(eDNA)
have,
a
large
extent,
become
common
practice
in
detection,
but
less
studies
have
compared
biodiversity
estimations
with
more
temporary
RNA
(eRNA).
This
study
compares
metabarcoding
results
from
pond
water
obtained
both
molecule
types
by
sequencing
V4
region
18S
rRNA
marker.
Water
was
collected
two
depths,
20
80
cm,
filtered
sequentially
through
filter
porosities,
0.45
0.22
μm.
Each
cut
half
before
fixation
either
96%
ETOH
or
RNAlater.
The
showed
no
differences
between
fixatives
for
molecule.
Overall,
estimates
eDNA
significantly
overperformed
eRNA,
likely
due
higher
concentrations
terrestrial
sources.
Comparisons
depths
variation
only,
increasing
levels
found
at
upper
layer.
Both
pore
sizes
captured
distinctive
compositions
taxa,
where
about
30%
diversity
uniquely
identified
second,
finer
filter.
Taken
together,
these
findings
imply
that
choice
molecular
marker,
depth
size
affects
pond.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Авг. 11, 2024
Despite
the
growing
catalogue
of
studies
detailing
taxonomic
and
functional
composition
soil
bacterial
communities,
life
history
traits
those
communities
remain
largely
unknown.
This
study
analyzes
a
global
dataset
metagenomes
to
explore
environmental
drivers
growth
potential,
fundamental
aspect
history.
We
find
that
estimated
from
codon
usage
statistics,
was
highest
in
forested
biomes
lowest
arid
latitudes.
indicates
productivity
generally
reflects
ecosystem
globally.
Accordingly,
strongest
predictors
potential
were
indicators,
such
as
distance
equator,
properties
vary
along
gradients,
pH
carbon
nitrogen
ratios.
also
observe
negatively
correlated
with
relative
abundances
genes
involved
carbohydrate
metabolism,
demonstrating
tradeoffs
between
resource
acquisition
bacteria.
Overall,
we
identify
macroecological
patterns
link
rates
cycling.
The
authors
show
latitudes,
which
The
spill
of
crude
oil
and
petroleum
derivatives
comprises
the
majority
oceans
pollution
leads
to
acute
chronic
damages
exposed
organisms
coastal
communities.
Some
bacteria
fungi
are
able
biodegrade
hydrocarbons
both
in
terrestrial
aquatic
environments.
Sediments
taken
from
Baltic
Sea
vicinity
one
terminal,
Curonian
Lagoon
strait
with
high
anthropogenic
shipping
pressure
a
source
microorganisms
having
potential
degrade
products.
Next
generation
sequencing
(NGS)
identified
taxa
(e.g.
Thalassolituus,
Exiguobacterium)
were
indicative
consistent
presence
sediments.
Through
enrichment
sediments
samples
oil,
marine
diesel
lubricating
line
NGS
study
results,
we
isolate
several
strains
oil-degrading
belonging
genera
Pseudomonas
Priestia,
members
family
Lysobacteriaceae;
as
well
Dipodoscaceae,
Dipodoscales
incertae
sedis,
Yarrowia,
Cyberlindnera,
Geotrichum,
Pichia,
Candida
Fusarium.
results
suggest
that
bacterial
fungal
communities
present
demonstrate
significant
for
bioremediation
other
pollutants.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 11, 2025
Abstract
Robust
evidence
on
relationships
between
the
human
microbiome
and
health
are
critical
for
understanding
improving
condition.
However,
there
is
little
information
about
methodological
approaches
to
combine
analyze
multiple
data
sets.
To
address
this
gap,
we
conducted
a
scoping
review
of
studies
that
sequencing
from
sets
understand
study
objectives,
sources
selection,
feature
-table
assembly
methods,
analyses.
References
were
identified
through
systematic
search
literature
published
2011
2022.
Our
final
included
60
articles.
Despite
wide-spread
use
word
“meta-analysis,”
found
only
24
used
process
select
their
sets,
suggesting
meanings
term
within
field.
While
more
than
two
thirds
at
least
one
publicly
available
source,
19
had
request
original
authors.
Most
(60%)
combined
disjoint
hypervariable
regions.
The
number
regions
was
not
associated
with
table
construction
method,
but
method
influenced
analytical
resolution.
results
suggest
community
needs
examine
terminology
analytic
combining
sets;
additional
work
needed
explore
impact
source
bias
in
studies;
invite
an
independent
evaluation
methods
across
Aquatic Conservation Marine and Freshwater Ecosystems,
Год журнала:
2025,
Номер
35(2)
Опубликована: Фев. 1, 2025
ABSTRACT
Molecular
traces
are
increasingly
being
applied
to
assess
the
presence
of
species
and
communities.
Studies
on
environmental
DNA
(eDNA)
have,
a
large
extent,
become
common
practice
in
detection,
but
less
studies
have
compared
biodiversity
estimations
with
more
temporary
RNA
(eRNA).
This
study
compares
metabarcoding
results
from
pond
water
obtained
both
molecule
types
by
sequencing
V4
region
18S
rRNA
marker.
Water
was
collected
two
depths,
20
80
cm,
filtered
sequentially
through
filter
porosities,
0.45
0.22
μm.
Each
cut
half
before
fixation
either
96%
ETOH
or
RNAlater.
The
showed
no
differences
between
fixatives
for
molecule.
Overall,
estimates
eDNA
significantly
overperformed
eRNA,
likely
due
higher
concentrations
terrestrial
sources.
Comparisons
depths
variation
only,
increasing
levels
found
at
upper
layer.
Both
pore
sizes
captured
distinctive
compositions
taxa,
where
about
30%
diversity
uniquely
identified
second,
finer
filter.
Taken
together,
these
findings
imply
that
choice
molecular
marker,
depth
size
affects
pond.