The response mechanisms of kelp Macrocystis pyrifera holobiont to elevated temperature and CO2 concentration
Journal of Applied Phycology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 13, 2025
Язык: Английский
Salinity as a key factor affects viral structure, function, and life strategies in lakes from arid and semi-arid regions
Journal of Hazardous Materials,
Год журнала:
2025,
Номер
unknown, С. 138075 - 138075
Опубликована: Март 1, 2025
Язык: Английский
Candidate Phyla Radiation (CPR) bacteria from hyperalkaline ecosystems provide novel insight into their symbiotic lifestyle and ecological implications
Yu He,
Shiyan Zhuo,
Meng Li
и другие.
Microbiome,
Год журнала:
2025,
Номер
13(1)
Опубликована: Апрель 7, 2025
Abstract
Background
Candidate
Phyla
Radiation
(CPR)
represents
a
unique
superphylum
characterized
by
ultra-small
cell
size
and
symbiotic
lifestyle.
Although
CPR
bacteria
have
been
identified
in
varied
environments,
their
broader
distribution,
associations
with
hosts,
ecological
roles
remain
largely
unexplored.
To
address
these
knowledge
gaps,
serpentinite-like
environment
was
selected
as
simplified
model
system
to
investigate
the
communities
hyperalkaline
environments
association
hosts
extreme
conditions.
Additionally,
enzymatic
activity,
global
evolution
of
CPR-derived
genes
encoding
essential
metabolites
(e.g.,
folate
or
vitamin
B
9
)
were
analyzed
assessed.
Results
In
highly
alkaline
ecosystem
(pH
=
10.9–12.4),
metagenomic
analyses
water
sediment
samples
revealed
that
constituted
1.93–34.8%
microbial
communities.
Metabolic
reconstruction
12
high-quality
metagenome-assembled
genomes
(MAGs)
affiliated
novel
taxa
from
orders
UBA6257,
UBA9973,
Paceibacterales
suggests
lack
complete
biosynthetic
pathways
for
amino
acids,
lipids,
nucleotides.
Notably,
commonly
harbored
associated
cofactor
biosynthesis
metabolism,
including
dihydrofolate
reductase
(
folA
),
serine
hydroxymethyltransferase
glyA
methylenetetrahydrofolate
folD
).
two
presumed
auxotrophic
incapable
forming
tetrahydrofolate
(THF)
due
absence
,
potential
some
harboring
genes.
The
functionality
experimentally
verified
heterologous
expression
-deletion
mutant
Escherichia
coli
MG1655
Δ
.
Further
assessment
available
n
4,581)
proteins
synthesis
bioactive
derivatives
and/or
genes)
present
90.8%
examined.
It
widespread
metabolic
complementarity
between
hosts.
Conclusions
This
finding
deepens
our
understanding
mechanisms
CPR-host
symbiosis,
providing
insight
into
cofactor-dependent
mutualistic
interactions.
Our
observations
suggest
may
contribute
organisms
indirectly
influence
biogeochemical
processes.
Язык: Английский
Engineering microbiomes to enhance macroalgal health, biomass yield, and carbon sequestration
Green Carbon,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 1, 2024
Язык: Английский
Discovery of new and variant Potyviruses in Asparagales plants from a Dutch urban botanic garden
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 10, 2024
Abstract
Although
viruses
play
an
important
role
in
human
health
and
plant
health,
most
are
still
undetected.
One
of
the
reasons
is
that
they
may
evolve
distinct
natural
habitats
not
yet
extensively
sampled
for
virus
analysis.
An
example
such
a
habitat
urban
botanic
gardens.
We
analyzed
25
Asparagales
plants
with
mild
to
severe
disease
phenotype
from
Dutch
garden
presence
known
unknown
types
variants
by
smallRNA-seq
RNA-seq.
found
all
samples
evidence
(past)
Potyviridae
presence,
mostly
Ornithogalum
(OV)
mosaic
(OrMV),
as
well
new
Iris
variant
(IMMV)
species
Potyvirus.
Also,
Betaflexivirus,
Polerovirus
Phenuivirus
were
detected.
Most
harbored
multiple
viruses,
18
out
showed
three
seven
12
13
present
four
11
samples.
In
this
study,
we
describe
characteristics
newly
discovered
Potyvirus
identify
several
potyviruses.
place
these
findings
context
viruses.
However,
unable
link
potyviruses
any
specific
phenotype.
Язык: Английский
Genomic diversity of phages infecting the globally widespread genus Sulfurimonas
Communications Biology,
Год журнала:
2024,
Номер
7(1)
Опубликована: Ноя. 2, 2024
The
widespread
bacterial
genus
Sulfurimonas
is
metabolically
versatile
and
occupies
a
key
ecological
niche
in
different
habitats,
but
its
interaction
with
bacteriophages
remains
unexplored.
Here
we
systematically
investigated
the
genetic
diversity,
taxonomy
patterns
of
Sulfurimonas-associated
phages
based
on
sequenced
microbial
genomes
metagenomes.
High-confidence
phage
contigs
related
to
were
retrieved
from
various
ecosystems,
clustered
into
61
viral
operational
taxonomic
units
across
three
realms,
including
Duplodnaviria,
Monodnaviria
Varidnaviria.
Head-tail
Caudoviricetes
assigned
19
genus-level
clusters,
majority
which
distantly
known
viruses.
Notably,
diverse
double
jelly-roll
viruses
inoviruses
also
linked
Sulfurimonas,
representing
two
commonly
overlooked
groups.
Historical
current
infections
revealed,
implying
impact
evolution
host
adaptive
immunity.
Additionally,
carrying
auxiliary
metabolic
genes
might
benefit
hosts
by
compensating
or
augmenting
sulfur
metabolism.
This
study
highlights
diversity
novelty
divergent
tailless
lineages,
providing
basis
for
further
investigation
phage-host
interactions
within
this
genus.
Язык: Английский