Polyploid plants take cytonuclear perturbations in stride
The Plant Cell,
Journal Year:
2024,
Volume and Issue:
36(4), P. 829 - 839
Published: Jan. 24, 2024
Hybridization
in
plants
is
often
accompanied
by
nuclear
genome
doubling
(allopolyploidy),
which
has
been
hypothesized
to
perturb
interactions
between
and
organellar
(mitochondrial
plastid)
genomes
creating
imbalances
the
relative
copy
number
of
these
producing
genetic
incompatibilities
maternally
derived
half
allopolyploid
from
paternal
progenitor.
Several
evolutionary
responses
have
predicted
ameliorate
effects,
including
selection
for
changes
protein
sequences
that
restore
cytonuclear
interactions;
biased
gene
retention/expression/conversion
favoring
maternal
copies;
fine-tuning
numbers
expression
levels.
Numerous
recent
studies,
however,
found
are
inconsistent
rarely
scale
genome-wide
generalities.
The
apparent
robustness
plant
allopolyploidy
may
reflect
features
general
allopolyploids
such
as
lack
F2
hybrid
breakdown
under
disomic
inheritance,
others
more
plant-specific,
slow
sequence
divergence
preexisting
regulatory
cell
size
endopolyploidy
during
development.
Thus,
only
act
main
barrier
establishment
lineages,
perhaps
helping
explain
why
so
pervasive
evolution.
Language: Английский
Genome‐wide patterns of homoeologous gene flow in allotetraploid coffee
Applications in Plant Sciences,
Journal Year:
2024,
Volume and Issue:
12(4)
Published: June 14, 2024
Allopolyploidy-a
hybridization-induced
whole-genome
duplication
event-has
been
a
major
driver
of
plant
diversification.
The
extent
to
which
chromosomes
pair
with
their
proper
homolog
vs.
homoeolog
in
allopolyploids
varies
across
taxa,
and
methods
detect
homoeologous
gene
flow
(HGF)
are
needed
understand
how
HGF
has
shaped
polyploid
lineages.
Language: Английский
Doubling down on polyploid discoveries: Global advances in genomics and ecological impacts of polyploidy
American Journal of Botany,
Journal Year:
2024,
Volume and Issue:
111(8)
Published: Aug. 1, 2024
Abstract
All
flowering
plants
are
now
recognized
as
diploidized
paleopolyploids
(Jiao
et
al.,
2011;
One
Thousand
Plant
Transcriptomes
Initiative,
2019),
and
polyploid
species
comprise
approximately
30%
of
contemporary
plant
(Wood
2009;
Barker
2016a).
A
major
implication
these
discoveries
is
that,
to
appreciate
the
evolution
diversity,
we
need
understand
fundamental
biology
polyploids
diploidization.
This
broadly
by
our
community
there
a
continued,
growing
interest
in
polyploidy
research
topic.
Over
past
25
years,
sequencing
analysis
genomes
has
revolutionized
understanding
importance
speciation
land
plants.
Language: Английский