CLAUSA is a MYB transcription factor that promotes leaf differentiation by attenuating cytokinin signaling

Maya Bar, Alon Israeli, Matan Levy, Hadas Ben Gera, José M. Jiménez-Gómez, Stepan Kouril, Petr Tarkowski, Naomi Ori*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

Leaf morphogenesis and differentiation are highly flexible processes, resulting in a large diversity of leaf forms. The development of compound leaves involves an extended morphogenesis stage compared with that of simple leaves, and the tomato (Solanum lycopersicum) mutant clausa (clau) exposes a potential for extended morphogenesis in tomato leaves. Here, we report that the CLAU gene encodes a MYB transcription factor that has evolved a unique role in compound-leaf species to promote an exit from the morphogenetic phase of tomato leaf development. We show that CLAU attenuates cytokinin signaling, and that clau plants have increased cytokinin sensitivity. The results suggest that flexible leaf patterning involves a coordinated interplay between transcription factors and hormones.

Original languageAmerican English
Pages (from-to)1602-1615
Number of pages14
JournalPlant Cell
Volume28
Issue number7
DOIs
StatePublished - Jul 2016

Bibliographical note

Publisher Copyright:
© 2016 American Society of Plant Biologists. All rights reserved.

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