A role for PHANTASTICA in medio-lateral regulation of adaxial domain development in tomato and tobacco leaves.

ABSTRACT:

Background and aims

Diverse leaf forms in nature can be categorized into two groups: simple and compound. A simple leaf has a single blade unit, whilst a compound leaf is dissected into leaflets. For both simple and compound leaves, a MYB domain transcription factor PHANTASTICA (PHAN) plays an important role in establishing the adaxial domain in the leaf. Absence of PHAN in arabidopsis and antirrhinum leaves supresses blade development, and in tomato suppresses leaflet development. However, in the rachis and petiole regions of tomato leaves where PHAN and the adaxial domain coexist, it has been unclear why leaf blade and leaflets are not formed. We hypothesized that PHAN regulates the medio-lateral extent of the adaxial domain, thereby determining compound leaf architecture.

Met

SUBMITTER: Zoulias N 

PROVIDER: S-EPMC3268540 | biostudies-literature | 2012 Feb

REPOSITORIES: biostudies-literature