Journal
SCIENCE
Volume 322, Issue 5909, Pages 1835-1839Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1166168
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Funding
- Action Concertee Incitative Jeunes Chercheuses et Jeunes Chercheurs and the trilateral Genoplante GENOSOME [TRIL-046]
- Ministere de l'Enseignement Superieur et de la Recherche
- Fundacion Espanola para la Ciencia y la Tecnologia (Ministerio de Ciencia e Innovacion)
- Region Ile-de-France
- UK Biotechnology and Biological
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Diversity in leaf shape is produced by alterations of the margin: for example, deep dissection leads to leaflet formation and less- pronounced incision results in serrations or lobes. By combining gene silencing and mutant analyses in four distantly related eudicot species, we show that reducing the function of NAM/CUC boundary genes (NO APICAL MERISTEM and CUP-SHAPED COTYLEDON) leads to a suppression of all marginal outgrowths and to fewer and fused leaflets. We propose that NAM/CUC genes promote formation of a boundary domain that delimits leaflets. This domain has a dual role promoting leaflet separation locally and leaflet formation at distance. In this manner, boundaries of compound leaves resemble boundaries functioning during animal development.
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