bioRxiv (Cold Spring Harbor Laboratory),
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 14, 2024
Abstract
The
long-distance
transport
of
microorganisms
via
dust
events
is
expected
to
become
more
prominent
and
intensified.
At
the
same
time,
survival
mechanisms
air/dust-borne
bacteria
their
possible
contribution
global
processes
remain
poorly
understood.
In
this
study,
we
characterized
Bacillus
species
from
transitional
season
storms,
previously
identified
as
a
significant
component
bioactive
community
microbiome.
Our
results
demonstrated
substantial
growth
biofilm
formation
diversification,
potentially
linked
niche
adaptation
surface-associated
within
heterogeneous
particles.
Most
isolates
form
biofilms
while
exhibiting
different
preferences
for
media
composition.
Sterile
induced
formation,
growth,
matrix
gene
expression
B.
subtilis
,
robust
in
key
related
isolates.
Overall,
our
highlight
significance
an
adaptive
mechanism
distinct
habitat
with
playing
role
microenvironments
particle.
These
hold
potential
implications
on
terrestrial
aquatic
ecology
health,
suggesting
pivotal
process
by
which
survive
evolve
understudied
habitat.
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(38)
Published: Sept. 9, 2024
The
existence
of
viable
human
pathogens
in
bioaerosols
which
can
cause
infection
or
affect
health
has
been
the
subject
little
research.
In
this
study,
data
provided
by
10
tropospheric
aircraft
surveys
over
Japan
2014
confirm
a
vast
diversity
microbial
species
up
to
3,000
m
height,
be
dispersed
above
planetary
boundary
layer
distances
2,000
km,
thanks
strong
winds
from
an
area
covered
with
massive
cereal
croplands
Northeast
(NE)
Asia.
Microbes
attached
aerosols
reveal
presence
diverse
bacterial
and
fungal
taxa,
including
potential
pathogens,
originating
sewage,
pesticides,
fertilizers.
Over
266
different
305
genera
appeared
transects.
Actinobacteria,
Bacillota,
Proteobacteria,
Bacteroidetes
phyla
dominated
bacteria
composition
and,
for
fungi,
Ascomycota
prevailed
Basidiomycota.
Among
pathogenic
identified,
include
such
as
Escherichia
coli,
Serratia
marcescens,
Prevotella
melaninogenica,
Staphylococcus
epidermidis,
haemolyticus,
saprophyticus,
Cutibacterium
acnes,
Clostridium
difficile,
botulinum,
Stenotrophomonas
maltophilia,
Shigella
sonnei,
Haemophillus
parainfluenzae
Acinetobacter
baumannii
health-relevant
fungi
Malassezia
restricta
,
globosa
Candida
parapsilosis
zeylanoides,
Sarocladium
kiliense,
Cladosporium
halotolerans,
herbarum
.
Diversity
estimates
were
similar
at
heights
surface
when
entrainment
air
high
altitudes
occurred.
Natural
antimicrobial-resistant
(ARB)
cultured
samples
found
indicating
long-distance
spread
ARB
viability.
This
would
represent
novel
way
disperse
both
resistance
genes
among
distant
geographical
regions.
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: March 4, 2025
The
present
study
investigated
the
ureolytic
airborne
bacteria
for
microbial
induced
carbonate
precipitation
(MICP)
applications,
seeking
resilient
strains
in
order
to
address
problems
of
bacterial
survivability
and
adaptability
biocementation
treatment
contribute
a
robust
approach
that
can
effectively
stabilize
diverse
soils.
Since
tend
survive
dynamic
environments,
they
are
believed
possess
remarkable
harsh
conditions,
thus
holding
great
potential
engineering
applications.
Samplings
across
climatic
zones
revealed
approximately
10-20%
isolates
were
each
sampling
site.
A
series
characterization
tests
conducted
on
selected
temperature
dependency
urease
activity.
results
many
these
unique
aspects.
For
instance,
some
trains
Glutamicibacter
sp.
found
precipitate
extra-large
calcium
crystals
could
be
beneficial
cementation
coarse
This
stands
out
from
previous
research
standard
by
focusing
exploration
bacteria.
findings
demonstrate
significant
number
have
potential,
suggesting
air
serve
as
isolation
source
MICP
Salud Ciencia y Tecnología,
Journal Year:
2025,
Volume and Issue:
5, P. 1152 - 1152
Published: Feb. 24, 2025
Introduction:
Human
activities
like
talking,
sneezing,
coughing,
walking,
washing,
and
toilet
use
contribute
to
an
increased
airborne
microbiological
load.
The
air
is
full
of
various
microorganisms,
which
act
as
a
medium
for
their
transmission
or
dissemination.
This
study
aimed
determine
the
types
concentrations
bacterial
fungal
aerosols,
evaluate
indoor
quality,
factors
responsible
presence
in
College
Applied
Medical
Sciences
building,
PSAU,
KSA.
Methods:
Indoor
microbial
loads
were
evaluated
by
collecting
84
samples
from
different
localities
using
settle
plate
method.
Results:
average
ranges
0
150.7
13.1
242.5
CFU
per
m3
fungi
bacteria,
respectively.
In
indoor-to-outdoor
ratio,
results
recorded
0.033
0.067
0.022
0.049
A
total
282
bacteria
identified,
2
isolates
belonging
Gram-positive
cocci
(Kocuria
rhizophila
3.3%,
Staphylococcus
epidermidis
15%),
(14%),
rod
Bacillus
spp.
(39%).
One
isolate
was
identified
Sphingomonas
paucimobilis
(0.7%).
Fungal
(n=48)
isolated;
46
filamentous
9(18.8%)
Aspergillus
(A.
niger,
A.
terreus,
ochraceus,
other
spp.),
Alternaria
sp.
8(16.7%)
Penicillium
spp.,
3(6.3%)
Fusarium
2(4.2%)
Rhizopus
Cladosporium
1(2.1%)
Drechslera
sp.,
12(25%)
unknown
species,
addition
two
yeast
isolates.
Conclusions:
building
safe
suitable
current
number
students,
building's
design
same
condition.
Sea-spray
aerosol
(SSA)
plays
a
crucial
role
in
climate
processes
by
influencing
radiative
forcing,
cloud
formation,
and
precipitation.
While
SSA
particles
with
diameters
between
0.1
10
μm
are
commonly
studied,
larger
aerosols
(>20
μm)
have
been
observed
over
terrestrial
oceanic
regions
but
generally
overlooked.
Large
bioaerosols
can
be
formed
pollen,
fungal
spores,
cell
debris.
However,
the
abundance,
dynamics,
composition
of
large
marine
remain
poorly
understood.
This
study
wave
atmospheric
conditions
driving
production,
resulting
sizes
(up
to
90
μm),
collected
collocated
samples
for
microscopy
analysis
during
two-month
time
period.
above
20
were
frequently
observed,
containing
diverse
range
intact
phytoplankton
cells,
including
small
flagellates
(2
diatoms,
colonial
cells
(above
40
μm).
The
abundance
suggests
that
sea-to-air
transfer
may
an
important,
yet
overlooked,
dispersal
mechanism
these
groups.
To
best
our
knowledge,
this
is
first
evidence
direct
airborne
observation
(rather
than
deposition)
cells.
These
findings
highlight
ubiquity
their
capacity
carry
Agronomy,
Journal Year:
2025,
Volume and Issue:
15(5), P. 1003 - 1003
Published: April 22, 2025
Bioaerosols
have
risen
as
pivotal
constituents
of
airborne
particles.
Closely
intertwined
with
the
agricultural
domain,
these
particles
exert
a
significant
influence
on
crops
through
dissemination
various
microorganisms
that
modulate
crop
growth
dynamics,
adaptive
responses
to
environmental
stimuli,
and
nutritional
profile
products.
As
main
vector,
are
at
forefront
in
transmission
plant
pathogens.
Therefore,
this
review
explains
factors
influencing
their
composition
settings
spreading.
Furthermore,
it
elucidates
complex
bioaerosol-based
communication
networks,
including
bacteria–bacteria,
bacteria–plant,
plant–plant
interactions,
mediated
by
specialized
volatile
organic
compounds
(VOCs)
released
plants
bacterial
(BVCs)
produced
bacteria.
These
play
crucial
role
synchronizing
stress
facilitating
processes.
They
serve
pathway
for
regulating
behavior
both
microorganisms.
Delving
into
origin
dispersion,
we
assess
key
methods
collection
analysis
while
also
comparing
strengths
weaknesses
sampling
techniques.
The
discussion
extends
delineating
roles
such
formation
biodiversity.
Central
discourse
is
an
in-depth
exploration
context,
particularly
focusing
potential
utility
forecasting
pathogen
subsequent
diseases.
This
highlights
importance
applying
strategies
promotion
sustainable
practices,
thus
contributing
advancement
ecological
balance
food
security,
which
remains
neglected
area
scientific
research.
Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(10), P. 1230 - 1230
Published: Oct. 15, 2024
This
paper
investigates
the
impact
of
air
quality
and
climate
variability
during
first
wave
COVID-19
associated
with
accelerated
transmission
lethality
in
Wuhan
China
four
European
metropolises
(Milan,
Madrid,
London,
Bucharest).
For
period
1
January–15
June
2020,
including
pre-lockdown,
lockdown,
beyond
periods,
this
study
used
a
synergy
situ
derived
satellite
time-series
data
analyses,
investigating
daily
average
inhalable
gaseous
pollutants
ozone
(O3),
nitrogen
dioxide
(NO2),
particulate
matter
two
size
fractions
(PM2.5
PM10)
together
Air
Quality
Index
(AQI),
total
Aerosol
Optical
Depth
(AOD)
at
550
nm,
variables
(air
temperature
2
m
height,
relative
humidity,
wind
speed,
Planetary
Boundary
Layer
height).
Applied
statistical
methods
cross-correlation
tests
involving
multiple
datasets
main
(inhalable
PM2.5
PM10
NO2),
AQI,
aerosol
loading
AOD
revealed
direct
positive
correlation
spread
severity
COVID-19.
Like
other
cities
worldwide,
first-wave
due
to
implemented
restrictions
on
human-related
emissions,
there
was
significant
decrease
most
pollutant
concentrations
(PM2.5,
PM10,
but
high
increase
ground-level
O3
all
selected
metropolises.
Also,
found
negative
correlations
new
cases
(DNCs)
surface
level,
PBL
heights,
speed
intensity
humidity.
The
findings
highlight
differential
impacts
pandemic
lockdowns
investigated
