Environmental Microbiology,
Год журнала:
2023,
Номер
25(12), С. 3255 - 3268
Опубликована: Окт. 9, 2023
The
guanine/cytosine
(GC)
content
of
prokaryotic
genomes
is
species-specific,
taking
values
from
16%
to
77%.
This
diversity
selection
for
GC
remains
contentious.
We
analyse
the
correlations
between
and
a
range
phenotypic
genotypic
data
in
thousands
prokaryotes.
integrates
well
with
these
traits
into
r/K
theory
when
plasticity
considered.
High
GC-content
prokaryotes
are
r-strategists
cheaper
descendants
thanks
lower
average
amino
acid
metabolic
cost,
colonize
unstable
environments
flagella
bacillus
form
generalists
terms
resource
opportunism
their
defence
mechanisms.
Low
K-strategists
specialized
stable
that
maintain
homeostasis
via
high-cost
outer
cell
membrane
endospore
formation
as
response
nutrient
deprivation,
attain
higher
nutrient-to-biomass
yield.
proteome
cost
high
driven
by
association
GC-rich
codons
acids
genetic
code,
while
correlation
genome
size
may
be
partly
due
functional
selection.
In
all,
molecular
consequence
ecological
Despite
GC
variation
constitutes
a
fundamental
element
of
genome
and
species
diversity,
the
precise
mechanisms
driving
it
remain
unclear.
The
abundant
sequence
data
available
for
ITS2,
commonly
employed
phylogenetic
marker
in
plants,
offers
an
exceptional
resource
exploring
across
angiosperms.A
comprehensive
selection
8666
species,
comprising
165
genera,
63
families,
30
orders
were
used
analyses.
alignment
ITS2
sequence-structures
partitioning
secondary
structures
into
paired
unpaired
regions
performed
using
4SALE.
Substitution
rates
frequencies
among
base-pairs
calculated
RNA-specific
models
PHASE
package.
results
showed
that
distribution
contents
on
angiosperm
phylogeny
was
heterogeneous,
but
their
increase
generally
associated
with
homogenization,
thereby
supporting
occurrence
GC-biased
gene
conversion
(gBGC)
during
concerted
evolution
ITS2.
Additionally,
content
structure
significantly
higher
than
regions,
indicating
thermodynamic
stability.
Furthermore,
RNA
substitution
demonstrated
base-pair
transformations
favored
both
elevation
fixation
providing
further
support
gBGC.Our
findings
highlight
significance
investigation,
which
demonstrate
gBGC
structure-based
are
influential
factors
content.
Environmental Microbiology,
Год журнала:
2023,
Номер
25(12), С. 3255 - 3268
Опубликована: Окт. 9, 2023
The
guanine/cytosine
(GC)
content
of
prokaryotic
genomes
is
species-specific,
taking
values
from
16%
to
77%.
This
diversity
selection
for
GC
remains
contentious.
We
analyse
the
correlations
between
and
a
range
phenotypic
genotypic
data
in
thousands
prokaryotes.
integrates
well
with
these
traits
into
r/K
theory
when
plasticity
considered.
High
GC-content
prokaryotes
are
r-strategists
cheaper
descendants
thanks
lower
average
amino
acid
metabolic
cost,
colonize
unstable
environments
flagella
bacillus
form
generalists
terms
resource
opportunism
their
defence
mechanisms.
Low
K-strategists
specialized
stable
that
maintain
homeostasis
via
high-cost
outer
cell
membrane
endospore
formation
as
response
nutrient
deprivation,
attain
higher
nutrient-to-biomass
yield.
proteome
cost
high
driven
by
association
GC-rich
codons
acids
genetic
code,
while
correlation
genome
size
may
be
partly
due
functional
selection.
In
all,
molecular
consequence
ecological
