ArticleAnnals of botany2025
Dehiscent fruits in Brassicaceae and Papaveraceae: convergent morpho-anatomical features with divergent underlying genetic mechanisms.
Article in Annals of botany, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Beyond dry and fleshy: Hidden developmental and anatomical transitions in Solanaceae fruit evolution.American journal of botany · 2026Article
- Mechanisms of Silique Dehiscence in Rapeseed: A Review of Research Progress.Current issues in molecular biology · 2025Review
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4 authors.
Funding
Abstract
BACKGROUND AND
aimsDry dehiscent fruits have independently evolved multiple times during angiosperm diversification. A striking example is the convergent evolution of Brassicaceae siliques and Papaveraceae pods, both formed by two fused carpels forming valves that meet at a replum or replum-like structure. In both cases, valve separation occurs through a dehiscence zone at the valve margins in contact with the replum. In Arabidopsis, fruit development is regulated by transcription factors: FRUITFULL (FUL) ensures proper valve cell division, REPLUMLESS (RPL) specifies replum identity and SHATTERPROOF (SHP1/2) genes pattern the dehiscence zone. SHP1/2 also regulate INDEHISCENT (IND) for lignified layer formation and ALCATRAZ (ALC) and SPATULA (SPT) for the non-lignified layer. The network is downregulated by APETALA2 (AP2), which influences replum formation and valve margin growth.
methodsUsing previously published and new in situ RNA hybridization expression data, we evaluated how this network applies to basal eudicots. KEY
resultsIn Bocconia frutescens, homologue expression suggests conserved roles for FUL and AP2 in fruit wall proliferation, acting antagonistically to ALC and RPL homologues localized to the dehiscence zone. A role for STK homologues in dehiscence zone formation cannot be excluded, while a role of AG-like genes, the closest homologues of SHP during fruit development, is unlikely.
conclusionsOur findings indicate significant rewiring of the fruit developmental network between basal and core eudicots, underscoring the need for functional studies in non-eudicot species to validate this framework.
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