Clouds influence the functioning of airborne microorganisms
Biogeosciences,
Год журнала:
2025,
Номер
22(5), С. 1257 - 1275
Опубликована: Март 6, 2025
Abstract.
Airborne
microorganisms
can
remain
at
altitude
for
several
days,
exposed
to
multiple
environmental
constraints
that
prevent
or
limit
microbial
activity,
the
most
important
of
which
is
probably
lack
available
liquid
water.
Clouds,
i.e.,
air
masses
containing
water,
could
offer
more
favorable
conditions.
In
order
investigate
influence
clouds
on
functioning
airborne
microorganisms,
we
captured
aerosols
in
a
nucleic
acid
preservation
buffer
from
high-altitude
mountain
meteorological
station
under
cloudy
and
clear-atmosphere
conditions
examined
metatranscriptomes.
The
specificities
aeromicrobiome's
clear
atmosphere
were
then
decrypted
using
differential
expression
analysis
(DEA).
data
reveal
higher
RNA
:
DNA
content
than
atmosphere,
suggesting
metabolic
overrepresentation
transcripts
related
energy
metabolism,
processing
carbon
nitrogen
compounds,
intracellular
signaling,
regulations,
transmembrane
transports.
Stress
response
tends
towards
responses
osmotic
shocks
starvation
rather
oxidants
atmosphere.
Autophagy
processes
eukaryotes
(macropexophagy,
recycling
peroxisomes)
help
alleviate
limited
amounts
nutrients
restricted
microenvironments
provided
by
cloud
droplets.
whole
phenomenon
resembles
rapid
resumption
activity
dry
soils
after
rewetting
rain,
known
as
Birch
effect
described
here
first
time
This
work
provides
unprecedented
information
modulations
an
relation
atmospheric
addition
contributing
fate
chemical
compounds
cloud-induced
biological
have
ecological
repercussions
shaping
diversity
their
capacity
invade
surface
environments.
Язык: Английский
A Study on the Understanding of Chemical Compositions of Deposited Fog Water over Central Indo-Gangetic Plain in India
Aerosol and Air Quality Research,
Год журнала:
2023,
Номер
24(3), С. 230098 - 230098
Опубликована: Окт. 20, 2023
Fog
preserves
information
about
air
pollution
by
pausing
movement
and
capturing
chemical
compositions
of
pollutants
into
fog
droplets.
The
current
study
presents
a
analysis
water
collected
in
January
2021
at
rural
site,
Arthauli,
located
over
the
central
Indo-Gangetic
Plain
(IGP)
India.
on
11
foggy
days
during
1st
to
21st
2021,
were
analyzed
for
anions
(SO42-,
Cl-,
NO2-,
NO3-),
cations
(NH4+,
Na+,
Ca2+,
Mg2+,
K+)
using
Ion
Chromatography.
pH
ranged
from
6.4
6.8
(Mean
=
6.6
±
0.1),
depicting
its
alkaline
nature.
Total
ionic
composition
(TIC)
comprised
majorly
NH4+
(35%),
followed
SO42-
(23%),
Ca2+
(15%),
Cl-
(10%),
NO3-
(8%),
Mg2+
(3%),
K+,
NO2-
(2%
each).
Back-trajectories
indicated
western
IGP
passing
major
urban
areas
before
reaching
sampling
site.
had
highest
neutralizing
factor
samples
(1.13),
(0.48)
(0.07).
Analyses
enrichment
factors,
correlation
coefficients,
principal
components
suggest
that
NH4+,
NO3-,
SO42-,
anthropogenic
sources
like
agricultural
activities,
factories,
vehicular
emissions,
brick
kilns,
thermal
plants,
fossil
fuels
combustion,
and,
biomass
burning,
while
crustal
source
fields.
Язык: Английский
Fog caused distinct diversity of airborne bacterial communities enriched with pathogens over central Indo-Gangetic plain in India
Heliyon,
Год журнала:
2024,
Номер
10(4), С. e26370 - e26370
Опубликована: Фев. 1, 2024
Fog
causes
enhancement
of
bacterial
loading
in
the
atmosphere.
Current
study
represents
impact
occurrences
fog
on
alteration
diversity
airborne
bacteria
and
their
network
computed
from
metagenomic
data
samples
collected
at
Arthauli
(25.95°N,
85.10°E)
situated
central
Indo-Gangetic
Plain
(IGP)
during
1-14
January
2021.
A
distinct
with
a
complex
is
identified
foggy
condition
due
to
enrichment
unique
types
bacteria.
Present
investigation
highlights
statistically
significant
pathogenic
found
ecosystem
within
air
evolved
over
IGP.
In
network,
Язык: Английский
Size-segregated characteristics of bioaerosols during foggy and non-foggy days of winter, meteorological implications, and health risk assessment
Environmental Science Advances,
Год журнала:
2024,
Номер
3(8), С. 1163 - 1172
Опубликована: Янв. 1, 2024
Fog
is
a
common
atmospheric
event
in
northern
India.
Язык: Английский