Australian Journal of Crop Science,
Journal Year:
2023,
Volume and Issue:
17(05):2023, P. 414 - 422
Published: May 1, 2023
Corymbia
citriodora
has
the
potential
to
be
used
in
expansion
of
forestry
sector
Brazil,
as
it
presents
greater
tolerance
abiotic
stresses
than
other
commonly
cultivated
species.
The
plants
are
exposed
several
stress
events
throughout
their
cycle
that
can
compromise
growth
and
development.
This
study
aimed
evaluate
physiological,
biochemical,
characteristics
C.
grown
under
different
irrigation
regimes
at
ages.
Plants
pots
were
submitted
five
(20,
35,
50,
65,
80%
maximum
soil
water
retention
capacity)
for
105
days
a
greenhouse.
Plant
growth,
gas
exchange,
leaf
potential,
chlorophyll,
carotenoids,
proline
contents,
lipid
peroxidation
by
MDA
content
evaluated
end
this
period.
More
restrictive
reduced
seedling
growth.
Water
availability
affected
morphological
parameters.
associated
with
plant
increased
levels
Genome Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: April 8, 2024
Genomes
have
a
highly
organized
architecture
(nonrandom
organization
of
functional
and
nonfunctional
genetic
elements
within
chromosomes)
that
is
essential
for
many
biological
functions,
particularly
gene
expression
reproduction.
Despite
the
need
to
conserve
genome
architecture,
high
level
structural
variation
has
been
observed
species.
As
species
separate
diverge,
also
diverges,
becoming
increasingly
poorly
conserved
as
divergence
time
increases.
However,
plant
genomes,
processes
are
not
well
described.
Here
we
use
long-read
sequencing
de
novo
assembly
33
phylogenetically
diverse,
wild
naturally
evolving
Eucalyptus
species,
covering
1–50
million
years
diverging
evolution
measure
architectural
conservation
describe
divergence.
The
investigation
these
genomes
revealed
following
lineage
divergence,
fragmented
by
rearrangements.
continue
accumulation
mutations
subsequent
beyond
recognition
rearrangements
become
primary
driver
loss
syntenic
regions
contribute
but
at
slower
pace
than
We
hypothesize
duplications
translocations
potentially
greatest
contributors
Applied Biosciences,
Journal Year:
2022,
Volume and Issue:
1(2), P. 113 - 128
Published: July 4, 2022
The
genome
sequence
of
any
organism
is
key
to
understanding
the
biology
and
utility
that
organism.
Plants
have
diverse,
complex
sometimes
very
large
nuclear
genomes,
mitochondrial
genomes
much
smaller
more
highly
conserved
chloroplast
genomes.
Plant
sequences
underpin
our
plant
serve
as
a
platform
for
genetic
selection
improvement
crop
plants
achieve
food
security.
development
technology
can
capture
volumes
data
at
low
costs
with
high
accuracy
has
driven
acceleration
sequencing
advancements.
More
recently,
long
read
been
advance
supporting
accurate
assembly
chromosome-level
This
review
explored
progress
in
outcomes
date.
support
conservation
biodiversity,
adaptations
climate
change
improvements
sustainability
agriculture,
which
nutritional
Plants,
Journal Year:
2021,
Volume and Issue:
10(10), P. 2022 - 2022
Published: Sept. 26, 2021
Climate
change
is
unleashing
novel
biotic
antagonistic
interactions
for
forest
trees
that
may
jeopardize
populations’
persistence.
Therefore,
this
review
article
envisions
highlighting
major
opportunities
from
ecological
evolutionary
genomics
to
assist
the
identification,
conservation,
and
breeding
of
resistance
in
tree
species.
Specifically,
we
first
discuss
how
assessing
genomic
architecture
stress
enables
us
recognize
a
more
polygenic
nature
trait
typically
regarded
Mendelian,
an
expectation
Fisherian
runaway
pathogen–host
concerted
arms-race
model.
Secondly,
outline
innovative
pipelines
capture
harness
natural
pre-adaptations
stresses
by
merging
tools
ecology,
phylo-geography,
omnigenetics
fields
within
predictive
platform.
Promoting
integrative
studies
promises
better
understanding
co-evolutionary
interactions,
as
well
efficient
utilization
resistant
phenotypes.
Molecular Ecology,
Journal Year:
2022,
Volume and Issue:
32(6), P. 1271 - 1287
Published: July 10, 2022
Abstract
Synteny,
the
ordering
of
sequences
within
homologous
chromosomes,
must
be
maintained
genomes
sexually
reproducing
species
for
sharing
alleles
and
production
viable,
offspring.
However,
when
closely
related
are
compared,
a
loss
synteny
is
often
observed.
Unequal
recombination
primary
mechanism
behind
loss,
occurring
more
in
transposon
rich
regions,
resulting
formation
chromosomal
rearrangements.
To
examine
patterns
among
three
related,
interbreeding,
wild
Eucalyptus
species,
we
assembled
their
using
long‐read
DNA
sequencing
de
novo
assembly.
We
identify
syntenic
rearranged
regions
between
these
estimate
that
~48%
our
remain
while
~36%
rearranged.
observed
rearrangements
highly
fragment
microsynteny.
Our
results
suggest
primarily
lost
through
small‐scale
rearrangements,
not
sequence
gain,
or
divergence.
Further
examination
identified
suggests
may
altering
phenotypes
species.
study
also
underscores
use
single
reference
genomic
variation
studies
could
lead
to
bias,
especially
given
scale
at
which
show
potentially
adaptive
loci
have
diverged,
deleted,
duplicated
and/or
This
provides
an
unbiased
framework
look
potential
speciation
rapidly
radiating
foundation
woodland
trees
free
from
selective
breeding
seen
most
crop
GigaScience,
Journal Year:
2022,
Volume and Issue:
12
Published: Dec. 28, 2022
Abstract
Background
Melaleuca
quinquenervia
(broad-leaved
paperbark)
is
a
coastal
wetland
tree
species
that
serves
as
foundation
in
eastern
Australia,
Indonesia,
Papua
New
Guinea,
and
Caledonia.
While
extensively
cultivated
for
its
ornamental
value,
it
has
also
become
invasive
regions
like
Florida,
USA.
Long-lived
trees
face
diverse
pest
pathogen
pressures,
plant
stress
responses
rely
on
immune
receptors
encoded
by
the
nucleotide-binding
leucine-rich
repeat
(NLR)
gene
family.
However,
comprehensive
annotation
of
NLR
encoding
genes
been
challenging
due
to
their
clustering
arrangement
chromosomes
highly
repetitive
domain
structure;
expansion
family
driven
largely
tandem
duplication.
Additionally,
allelic
diversity
remains
unexplored
outcrossing
species,
many
genomes
are
presented
haploid,
collapsed
state.
Results
We
assembled
chromosome-level
pseudo-phased
genome
M.
described
NLRs
using
novel
FindPlantNLRs
pipeline.
Analysis
reveals
variation
number
each
haplotype,
distinct
patterns,
differences
types
numbers
integrated
domains.
Conclusions
The
high-quality
assembly
establishes
new
framework
functional
evolutionary
studies
this
significant
species.
Our
findings
suggest
maintaining
within
crucial
enabling
environmental
stress,
particularly
long-lived
plants.
BMC Genomics,
Journal Year:
2023,
Volume and Issue:
24(1)
Published: April 28, 2023
Abstract
Background
Eucalyptus
urophylla
×
grandis
,
an
economically
important
forest
tree,
provides
raw
material
for
energy
and
reduces
damage
to
native
forests.
However,
the
absence
of
a
high-quality
E.
reference
genome
has
significantly
hindered
its
evolution
genetic
analysis.
Results
We
successfully
presented
(545.75
Mb;
scaffold
N50,
51.62
Mb)
using
combination
Illumina,
PacBio
HiFi,
Hi-C
sequencing
platforms.
A
total
34,502
genes
58.56%
repetitive
sequences
in
this
were
annotated.
Using
analyses,
we
identified
recent
whole-genome
duplication
(WGD)
event
.
further
found
that
gene
families
associated
with
starch
sucrose
metabolism,
flavonoid
biosynthesis,
plant–pathogen
interaction
expanded
Moreover,
comparative
genomic
evolutionary
analyses
showed
large
structural
variations
among
different
chromosomes
34
accessions,
which
divided
into
six
clades.
Conclusions
Overall,
our
findings
provide
valuable
resource
expanding
understanding
evolution,
improvement,
biology.
Plant Systematics and Evolution,
Journal Year:
2023,
Volume and Issue:
309(3)
Published: April 6, 2023
Abstract
Terpene
synthases
(TPS)
are
responsible
for
the
terminal
biosynthetic
step
of
terpenoid
production.
They
encoded
by
a
highly
diverse
gene
family
believed
to
evolve
tandem
duplication
in
response
adaptive
pressures.
Taxa
Myrtaceae
renowned
their
diversity
terpenoid-rich
essential
oils,
and
among
them,
tribe
Eucalypteae
has
largest
TPS
found
any
plant
(>
100
).
In
this
study,
comparative
analysis
Melaleuca
alternifolia
(tea
tree),
from
related
Melaleuceae,
revealed
some
have
smaller
families,
as
total
58
putatively
functional
full-length
genes,
21
pseudogenes
were
identified
manual
annotation
newly
released
long-read
assembly
genome.
The
TPS-a
TPS-b2
subfamilies
that
synthesise
secondary
compounds
often
mediating
plant-environment
interactions
more
diminutive
than
those
eucalypts,
probably
reflecting
key
differences
evolutionary
histories
two
lineages.
Of
TPS-b1
,
13
clustered
into
region
around
400
kb
on
one
scaffold.
organisation
these
suggested
was
instrumental
evolution
terpene
chemistry
.
Four
likely
catalyse
synthesis
three
monoterpenoid
components
used
classify
tea
tree
chemotypes
within
single
small
87
larger
cluster
raising
possibility
coregulation
linkage
may
lead
behaviour
locus,
providing
an
explanation
categorical
inheritance
complex
multiple-component
taxon.
Gigabyte,
Journal Year:
2021,
Volume and Issue:
2021, P. 1 - 15
Published: Aug. 9, 2021
The
economically
important
Melaleuca
alternifolia
(tea
tree)
is
the
source
of
a
terpene-rich
essential
oil
with
therapeutic
and
cosmetic
uses
around
world.
Tea
tree
has
been
cultivated
bred
in
Australia
since
1990s.
It
extensively
studied
for
genetics
biochemistry
terpene
biosynthesis.
Here,
we
report
high
quality
de
novo
genome
assembly
using
Pacific
Biosciences
Illumina
sequencing.
was
assembled
into
3128
scaffolds
total
length
362
Mb
(N50
=
1.9
Mb),
significantly
higher
contiguity
than
previous
8.7
Kb).
Using
homology-based,
RNA-seq
evidence-based
ab
initio
prediction
approach,
37,226
protein-coding
genes
were
predicted.
Genome
annotation
exhibited
completeness
scores
98.1%
89.4%,
respectively.
Sequence
sufficient
to
reveal
extensive
gene
order
conservation
chromosomal
rearrangements
alignments
Eucalyptus
grandis
Corymbia
citriodora
genomes.
This
new
advances
currently
available
resources
investigate
structure
family
evolution
M.
alternifolia.
will
enable
further
comparative
genomic
studies
Myrtaceae
elucidate
genetic
foundations
valuable
traits
this
crop.