The
Green
Sea
turtle
Chelonia
mydas
is
amply
exposed
to
marine
plastics
pollution,
but,
inversely,
also
a
potential
bioindicator
thereof.
Turtle
feces
were
collected
from
two
sites
on
the
northeast
Caribbean
coast
of
Yucatan
Peninsula,
Mexico.
After
organic
matter
degradation
samples,
microplastics
identified
and
quantified
by
stereomicroscope.
Their
morphostructure
was
analyzed
scanning
electron
microscopy
coupled
with
energy
dispersive
X-ray
spectroscopy,
while
their
composition
determined
Fourier
transform
infrared
spectroscopy
Raman
spectroscopy.
Microplastics
(MP)
abundance
ranged
89
±
3
MP.g.-1
in
open
water
samples
4
2
beach
(Kruskal
Wallis=
70.31,
p<
0.001).
Almost
all
particles
blue
transparent
fibers.
nylon,
PVC,
polypropylene,
polyester.
non-invasive
method
used
here
allowed
detection
microplastic
pollution
promising
for
long-term
monitoring.
Frontiers in Marine Science,
Journal Year:
2024,
Volume and Issue:
11
Published: May 21, 2024
Expanded
polystyrene
(EPS),
commonly
used
as
floating
material
in
mariculture,
could
be
a
significant
source
of
coastal
PS
waste.
Prolonged
seawater
leads
to
the
formation
dense
biofilms,
which
disperse
into
oceanic
environment
and
spread
water
bodies
even
seabed
EPS
deteriorates
microplastics.
To
understand
bacterial
community
structure
surface
this
study
employed
high-throughput
sequencing
technology
analyze
biofilms
on
foams
offshore
mariculture
aside
Xiamen.
Analysis
24
biofilm
samples
from
different
seasons
revealed
differences
structures.
However,
we
have
identified
core
groups
biofilm,
including
Flavobacteriaceae
,
Rhodobacteraceae
Halomonadaceae
Exiguobacteriaceae
Vibrionaceae
Pseudoalteromonadaceae
.
The
are
particularly
attracted
subtropical
material.
In
addition,
with
potential
degrading
were
identified,
such
Alcanivorax
Pseudomonas
Acinetobacter
Exiguobacterium
Brevundimonas
Bacillus
well
fish
pathogen
johnsonii
microbial
formed
demonstrate
high
diversity
strongly
influenced
by
environmental
conditions.
This
contributes
deeper
understanding
interactions
bacteria
widely
dispersed
materials
oceans.
Environment International,
Journal Year:
2024,
Volume and Issue:
190, P. 108901 - 108901
Published: July 21, 2024
Upon
entering
the
marine
environment,
plastics
are
colonized
by
a
plethora
of
microorganisms
to
form
plastisphere,
influencing
fate
and
transport
plastic
debris
health
ecosystems.
The
assembly
plastisphere
is
generally
believed
be
dominated
stochastic
processes.
However,
it
remains
elusive
whether
microbial
interaction
in
communities
conserved
or
not.
We
analyzed
microbiomes
137
samples
from
intertidal
zones
at
different
geographical
locations
habitats
(seagrass,
coral,
mangrove,
beach,
open
ocean)
compared
them
with
surrounding
sediment
seawater
microbiomes.
Microbial
community
structures
were
more
similar
each
other
but
differed
substantially
water
microbiomes,
implying
common
mechanism
assembly.
used
machine
learning
algorithms
(Multinomial
Logistic
Regression,
Support
Vector
Machine,
Decision
Trees,
Random
Forest,
Artificial
Neural
Networks)
classify
high
sensitivity
based
on
microbiome
composition.
Eukaryotic
prokaryotic
phototrophic
organisms
such
as
green
algae,
diatoms,
cyanobacteria,
found
enriched
surfaces.
Network
analysis
revealed
central
role
formation
sustenance
plastispheres.
that
phototrophs
served
core
members
interacting
strongly
heterotrophic
irrespective
sampling
location,
habitats,
polymer
types.
This
would
explain
along
properties
driven
environment.
Our
results
highlight
importance
shaping
communities.
Journal of Population Therapeutics and Clinical Pharmacology,
Journal Year:
2024,
Volume and Issue:
unknown, P. 1326 - 1335
Published: July 31, 2024
Background:
Plastics
are
widely
used
due
to
their
durability,
flexibility,
and
transparency,
leading
extensive
industrial
applications.
However,
the
accumulation
of
plastics
in
various
ecosystems
has
created
significant
environmental
challenges.
Objective:
This
review
aims
evaluate
studies
conducted
over
past
ten
years
on
biodegradation
by
microorganisms
from
cold
marine
environments.
Methods:
Descriptors
Used:
"plastic
AND
oceans,"
(psychrophilic
OR
psychrophile),"
"PETAse
(fungi
bacteria),"
"extremophiles
plastic
biodegradation."
Databases
Searched:
Scopus,
PubMed,
Google
Scholar.
Number
Papers
Located:
11,481.
PubMed:
1.79%
Scholar:
1.84%
Scopus:
0.26%
Results:
The
genera
most
frequently
mentioned
as
potential
degraders
habitats
were
Streptomyces,
Corynebacterium,
Arthrobacter,
Micrococcus,
Pseudomonas,
Rhodococcus.
findings
indicate
a
gap
research
degradation
Conclusion:
There
is
need
for
further
explore
enhance
activity
cold-adapted
microbial
enzymes
effective
ecosystems.
presents
opportunities
additional
this
emerging
field.
The
Green
Sea
turtle
Chelonia
mydas
is
amply
exposed
to
marine
plastics
pollution,
but,
inversely,
also
a
potential
bioindicator
thereof.
Turtle
feces
were
collected
from
two
sites
on
the
northeast
Caribbean
coast
of
Yucatan
Peninsula,
Mexico.
After
organic
matter
degradation
samples,
microplastics
identified
and
quantified
by
stereomicroscope.
Their
morphostructure
was
analyzed
scanning
electron
microscopy
coupled
with
energy
dispersive
X-ray
spectroscopy,
while
their
composition
determined
Fourier
transform
infrared
spectroscopy
Raman
spectroscopy.
Microplastics
(MP)
abundance
ranged
89
±
3
MP.g.-1
in
open
water
samples
4
2
beach
(Kruskal
Wallis=
70.31,
p<
0.001).
Almost
all
particles
blue
transparent
fibers.
nylon,
PVC,
polypropylene,
polyester.
non-invasive
method
used
here
allowed
detection
microplastic
pollution
promising
for
long-term
monitoring.
