期刊
ELIFE
卷 6, 期 -, 页码 -出版社
eLIFE SCIENCES PUBL LTD
DOI: 10.7554/eLife.27421
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资金
- Howard Hughes Medical Institute
- Gordon and Betty Moore Foundation [GBMF3406]
- Australian Research Council
- European Research Council under European Union's Seventh Framework Programme/ERC [261081]
- People Programme (Marie Curie Actions) under REA [255089]
- European Molecular Biology Laboratory
- EMBL International PhD Programme
- Gatsby Charitable Foundation [GAT3395/PR4]
- Swedish Research Council [VR2013-4632]
- European Research Council (ERC) [261081] Funding Source: European Research Council (ERC)
In plants the dorsoventral boundary of leaves defines an axis of symmetry through the centre of the organ separating the top (dorsal) and bottom (ventral) tissues. Although the positioning of this boundary is critical for leaf morphogenesis, how the boundary is established and how it influences development remains unclear. Using live-imaging and perturbation experiments we show that leaf orientation, morphology and position are pre-patterned by HD-ZIPIII and KAN gene expression in the shoot, leading to a model in which dorsoventral genes coordinate to regulate plant development by localizing auxin response between their expression domains. However we also find that auxin levels feedback on dorsoventral patterning by spatially organizing HD-ZIPIII and KAN expression in the shoot periphery. By demonstrating that the regulation of these genes by auxin also governs their response to wounds, our results also provide a parsimonious explanation for the influence of wounds on leaf dorsoventrality.
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