Paper · 2026 · Frontiers in Plant Science

Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis

Siqi Liu; Zeyu Zhou; Weibin Wang; et al.

6
claims
13
verbatim quotes
1
citations
2
research areas
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Open access · cc-by

Abstract

Introduction: Flavonoid metabolism innovation is critical for seed plants' terrestrial adaptation. Three key 2-oxoglutarate-dependent dioxygenase (2ODD) families-F3H, ANS, FLS-underpin flavonoid biosynthesis, but their evolutionary diversification mechanisms remain unclear. Methods: Comprehensive analyses were performed across 238 seed plant genomes, including phylogenetic/collinearity analyses, conserved motif detection, duplication-type classification, selection pressure assessment, and Brassica napus promoter/expression profiling. Results: These families originated from a common ancestral gene (ancestor X) and diversified via multiple duplications (TRD/WGD as primary drivers). Their evolution aligns with the EAC model, with subfunctionalization resolving ancestral multifunctionality. Structural conservation and lineage-specific motif variations support functional differentiation, and purifying selection predominates. Discussion: Our findings clarify the molecular evolutionary mechanisms of flavonoid pathway diversification, providing novel insights into the origin of flavonol and anthocyanin biosynthesis in seed plants.

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Claims 6

Observationobservedoriginal resultmeasured

Claim · model-written summary

F3H, ANS and FLS families originated from a common ancestral gene in seed plants.

Taxon
seed plantsSpermatophytat0
Gene
F3H, ANS, FLSe1
Outcome
originated from a common ancestral genee2
Qualifier
ancestor Xe2

Verbatim

t0

“Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis”

✓ located verbatim in the source · title, characters 0–140 · show in text ↑
e1

“Three key 2-oxoglutarate-dependent dioxygenase (2ODD) families-F3H, ANS, FLS”

✓ located verbatim in the source · abstract, characters 99–175 · show in text ↑
e2

“These families originated from a common ancestral gene (ancestor X) and diversified via multiple duplications (TRD/WGD as primary drivers)”

✓ located verbatim in the source · abstract, characters 549–687 · show in text ↑
Mechanismobservedoriginal resultmeasured

Claim · model-written summary

F3H, ANS and FLS families diversified via multiple duplications, with TRD and WGD as primary drivers.

Taxon
seed plantsSpermatophytat0
Outcome
diversified via multiple duplicationse2
Qualifier
TRD/WGD as primary driverse2

Verbatim

t0

“Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis”

✓ located verbatim in the source · title, characters 0–140 · show in text ↑
e2

“These families originated from a common ancestral gene (ancestor X) and diversified via multiple duplications (TRD/WGD as primary drivers)”

✓ located verbatim in the source · abstract, characters 549–687 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Evolution of these families aligns with the EAC model.

Taxon
seed plantsSpermatophytat0
Outcome
evolutione3
Qualifier
aligns with the EAC modele3

Verbatim

t0

“Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis”

✓ located verbatim in the source · title, characters 0–140 · show in text ↑
e3

“Their evolution aligns with the EAC model, with subfunctionalization resolving ancestral multifunctionality”

✓ located verbatim in the source · abstract, characters 689–796 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Subfunctionalization resolved ancestral multifunctionality in these families.

Taxon
seed plantsSpermatophytat0
Outcome
resolving ancestral multifunctionalitye3
Qualifier
subfunctionalizatione3

Verbatim

t0

“Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis”

✓ located verbatim in the source · title, characters 0–140 · show in text ↑
e3

“Their evolution aligns with the EAC model, with subfunctionalization resolving ancestral multifunctionality”

✓ located verbatim in the source · abstract, characters 689–796 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Structural conservation and lineage-specific motif variations support functional differentiation of these families.

Taxon
seed plantsSpermatophytat0
Outcome
functional differentiatione4
Qualifier
Structural conservation and lineage-specific motif variationse4

Verbatim

t0

“Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis”

✓ located verbatim in the source · title, characters 0–140 · show in text ↑
e4

“Structural conservation and lineage-specific motif variations support functional differentiation, and purifying selection predominates”

✓ located verbatim in the source · abstract, characters 798–932 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Purifying selection predominates in these flavonoid-related 2ODD families.

Taxon
seed plantsSpermatophytat0
Outcome
purifying selection predominatese4

Verbatim

t0

“Genomic analyses of 238 seed plants reveal the evolutionary mechanisms driving specialization of F3H, ANS, and FLS in flavonoid biosynthesis”

✓ located verbatim in the source · title, characters 0–140 · show in text ↑
e4

“Structural conservation and lineage-specific motif variations support functional differentiation, and purifying selection predominates”

✓ located verbatim in the source · abstract, characters 798–932 · show in text ↑