bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Фев. 16, 2023
ABSTRACT
The
emergence
of
novel
disease-causing
viruses
in
mammals
is
part
the
long
evolutionary
history
viruses.
Tracing
these
histories
contextualises
virus
spill
over
events
and
may
help
to
elucidate
how
why
they
occur.
We
used
a
combination
total
RNA
sequencing
transcriptome
data
mining
extend
diversity
order
Articulavirales
,
which
includes
influenza
From
this,
we
identified
first
instance
Cnidaria
(including
corals),
constituting
divergent
family
that
tentatively
named
Cnidenomoviridae
.
This
be
basal
group
within
also
extended
known
lineage
by
identifying
highly
divergent,
sturgeon-associated
virus.
suggests
fish
were
among
hosts
Finally,
substantially
expanded
quaranjaviruses
proposed
this
genus
reclassified
as
(the
Quaranjaviridae
).
find
evidence
vertebrate
infecting
have
initially
evolved
crustaceans
before
spilling
into
terrestrial
Chelicerata
(i.e.,
ticks).
Together,
our
findings
indicate
has
at
least
600
million
years,
emerging
aquatic
animals.
Importantly,
evolution
was
not
shaped
strict
virus-host
codivergence,
but
rather
multiple
aquatic-terrestrial
transitions
substantial
host
jumps,
some
are
still
observable
today.
Molecular Ecology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 17, 2025
ABSTRACT
Rhinolophus
bats
have
been
identified
as
natural
reservoirs
for
viruses
with
global
health
implications,
including
severe
acute
respiratory
syndrome–related
coronaviruses
(SARSr‐CoV)
and
swine
diarrhoea
syndrome‐related
coronavirus
(SADSr‐CoV).
In
this
study,
we
characterised
the
individual
viromes
of
603
to
systematically
investigate
diversity,
abundance
geographic
distribution
viral
communities
within
R.
affinis
,
sinicus
11
other
bat
species.
The
massive
metatranscriptomic
data
revealed
substantial
genome
resources
133
vertebrate‐infecting
clusters,
which
contain
occasional
cross‐species
transmission
across
mammalian
orders
especially
families.
Notably,
those
included
nine
clusters
closely
related
human
and/or
livestock
pathogens,
such
SARS‐CoVs
SADS‐CoVs.
investigation
also
highlighted
distinct
features
diversity
between
colonies,
appear
be
influenced
by
host
population
genetics
comparison
SARSr‐CoVs
further
showed
varied
impact
specificity
along
genome‐wide
diversification
modular
evolution
among
Overall,
findings
point
a
complex
interaction
genetic
way
spread
structure
populations,
calling
continued
surveillance
efforts
understand
factors
driving
emergence
in
populations.
These
results
present
underestimated
spillover
risk
viruses,
highlighting
importance
enhancing
preparedness
emerging
zoonotic
viruses.
Molecular Biology and Evolution,
Год журнала:
2023,
Номер
40(4)
Опубликована: Апрель 1, 2023
RNA
viruses
are
abundant
and
highly
diverse
infect
all
or
most
eukaryotic
organisms.
However,
only
a
tiny
fraction
of
the
number
diversity
virus
species
have
been
catalogued.
To
cost-effectively
expand
known
sequences,
we
mined
publicly
available
transcriptomic
data
sets.
We
developed
77
family-level
Hidden
Markov
Model
profiles
for
viral
RNA-dependent
polymerase
(RdRp)-the
universal
"hallmark"
gene
viruses.
By
using
these
to
search
National
Center
Biotechnology
Information
Transcriptome
Shotgun
Assembly
database,
identified
5,867
contigs
encoding
RdRps
fragments
thereof
analyzed
their
diversity,
taxonomic
classification,
phylogeny,
host
associations.
Our
study
expands
viruses,
curated
RdRp
Profile
Models
provide
useful
resource
discovery
community.
Proceedings of the National Academy of Sciences,
Год журнала:
2024,
Номер
121(30)
Опубликована: Июль 17, 2024
It
is
commonly
held
that
there
a
fundamental
relationship
between
genome
size
and
error
rate,
manifest
as
notional
“error
threshold”
sets
an
upper
limit
on
sizes.
The
sizes
of
RNA
viruses,
which
have
intrinsically
high
mutation
rates
due
to
lack
mechanisms
for
correction,
must
therefore
be
small
avoid
accumulating
excessive
number
deleterious
mutations
will
ultimately
lead
population
extinction.
proposed
exceptions
this
evolutionary
rule
are
viruses
from
the
order
Nidovirales
(such
coronaviruses)
encode
error-correcting
exonucleases,
enabling
them
reach
lengths
greater
than
40
kb.
recent
discovery
large-genome
flavi-like
(
Flaviviridae
),
comprise
genomes
up
27
kb
in
length
yet
seemingly
do
not
exonuclease
domains,
has
led
proposal
proofreading
mechanism
required
facilitate
expansion
nonsegmented
virus
above
30
Herein,
we
describe
~40
identified
Haliclona
sponge
metatranscriptome
does
known
exonuclease.
Structural
analysis
revealed
may
instead
captured
cellular
domains
associated
with
nucleic
acid
metabolism
been
previously
found
viruses.
Phylogenetic
inference
placed
divergent
pesti-like
lineage,
such
provisionally
termed
it
“Maximus
virus.”
This
represents
instance
achieving
comparable
demonstrates
evolved
multiple
solutions
overcome
threshold.
Zoonotic
viruses
cause
substantial
public
health
and
socioeconomic
problems
worldwide.
Understanding
how
evolve
spread
within
among
wildlife
species
is
a
critical
step
when
aiming
for
proactive
identification
of
viral
threats
to
prevent
future
pandemics.
Despite
the
many
proposed
factors
influencing
diversity,
genomic
diversity
structure
communities
in
East
Africa
are
largely
unknown.
Proceedings of the National Academy of Sciences,
Год журнала:
2023,
Номер
120(45)
Опубликована: Окт. 31, 2023
The
emergence
of
previously
unknown
disease-causing
viruses
in
mammals
is
part
the
result
a
long-term
evolutionary
process.
Reconstructing
deep
phylogenetic
histories
helps
identify
major
transitions
and
contextualizes
new
hosts.
We
used
combination
total
RNA
sequencing
transcriptome
data
mining
to
extend
diversity
history
virus
order
Articulavirales,
which
includes
influenza
viruses.
identified
instances
Articulavirales
invertebrate
phylum
Cnidaria
(including
corals),
constituting
novel
divergent
family
that
we
provisionally
named
"Cnidenomoviridae."
further
extended
lineage
by
identifying
four
divergent,
fish-associated
influenza-like
viruses,
thereby
supporting
hypothesis
fish
were
among
first
hosts
In
addition,
substantially
expanded
quaranjaviruses
proposed
this
genus
be
reclassified
as
family-the
"Quaranjaviridae."
Within
putative
family,
arachnid-infecting
genus,
"Cheliceravirus."
Notably,
observed
close
relationship
between
Crustacea-
Chelicerata-infecting
"Quaranjaviridae"
inconsistent
with
virus-host
codivergence.
Together,
these
suggest
has
evolved
over
at
least
600
million
years,
emerging
aquatic
animals.
Importantly,
evolution
was
likely
shaped
multiple
aquatic-terrestrial
substantial
host
jumps,
some
are
still
observable
today.
Ecology and Evolution,
Год журнала:
2024,
Номер
14(1)
Опубликована: Янв. 1, 2024
Tick-associated
viruses
remain
a
substantial
zoonotic
risk
worldwide,
so
knowledge
of
the
diversity
tick
has
potential
health
consequences.
Despite
their
importance,
large
amounts
sequences
in
public
data
sets
from
meta-genomic
and
-transcriptomic
projects
unannotated,
sequence
that
could
contain
undocumented
viruses.
Through
mining
bioinformatic
analysis
more
than
37,800
sets,
we
found
83
unannotated
contigs
exhibiting
high
identity
with
known
These
putative
viral
were
classified
into
three
RNA
families
(Alphatetraviridae,
Orthomyxoviridae
Chuviridae)
one
DNA
family
(Asfarviridae).
After
manual
checking
quality
dissimilarity
towards
other
set,
these
reduced
to
five
Alphatetraviridae
four
viruses,
two
Chuviridae
which
clustered
tick-associated
forming
separate
clade
within
families.
We
further
attempted
assess
previously
likely
represent
risks
thus
deserve
investigation.
ranked
human
infection
133
using
genome
composition-based
machine
learning
model.
high-risk
(Langat
virus,
Lonestar
chuvirus
1,
Grotenhout
Taggert
virus
Johnston
Atoll
virus)
have
not
been
infect
(Nairoviridae
Phenuiviridae)
proportion
This
adds
highlights
importance
surveillance
newly
emerging
diseases.
Improved
RNA
virus
understanding
is
critical
to
studying
animal
and
plant
health,
environmental
processes.
However,
the
continuous
rapid
evolution
makes
their
identification
characterization
challenging.
While
recent
sequence-based
advances
have
led
extensive
discovery,
there
growing
variation
in
how
viruses
are
identified,
analyzed,
characterized,
reported.
To
this
end,
an
RdRp
Summit
was
organized
a
hybrid
meeting
took
place
Valencia,
Spain
May
2023
convene
leading
experts
with
emphasis
on
early
career
researchers
(ECRs)
across
diverse
scientific
communities.
Here
we
synthesize
key
insights
recommendations
offer
these
as
first
effort
establish
consensus
framework
for
advancing
discovery.
First,
need
interoperability
through
standardized
methodologies,
data-sharing
protocols,
metadata
provision
interdisciplinary
collaborations
specific
examples
starting
points.
Second,
emergent
field,
recognize
incorporate
cutting-edge
technologies
knowledge
often
improve
omic-based
viral
detection
annotation
novel
capabilities
reveal
new
biology.
Third,
underscore
significance
of
ECRs
fostering
international
partnerships
promote
inclusivity
equity
discovery
efforts.
The
proposed
serves
roadmap
community
collectively
contribute
tremendous
challenge
unveiling
virosphere.