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3 results on '"Blilou, Ikram"'

2. Polar PIN localization directs auxin flow in plants

Author

Wisniewska, Justyna, Xu, Jian, Seifertova, Daniela, Brewer, Philip B., Ruzicka, Kamil, Blilou, Ikram, Rouquie, David, Benkova, Eva, Scheres, Ben, and Friml, Jiri

Subjects
Plant hormones -- Research, Plant hormones -- Analysis
Published
2006

3. An Evolutionarily Conserved Mechanism Delimiting SHR Movement Defines a Single Layer of Endodermis in Plants.

Author

Hongchang Cui, Levesque, Mitchell P., Vernoux, Teva, Jung, Jee W., Paquette, Alice J., Gallagher, Kimberly L., Wang, Jean Y., Blilou, Ikram, Scheres, Ben, and Benfey, Philip N.

Subjects
*DEVELOPMENTAL genetics, *PLANT development, *DEVELOPMENTAL biology, *CELL communication, *EMBRYOLOGY, *DEVELOPMENTAL endocrinology, *ARABIDOPSIS, *FETAL development, *HUMAN growth
Abstract

Intercellular protein movement plays a critical role in animal and plant development. SHORTROOT (SHR) is a moving transcription factor essential for endodermis specification in the Arabidopsis root. Unlike diffusible animal morphogens, which form a gradient across multiple cell layers, SHR movement is limited to essentially one cell layer. However, the molecular mechanism is unknown. We show that SCARECROW (SCR) blocks SHR movement by sequestering it into the nucleus through protein-protein interaction and a safeguard mechanism that relies on a SHR/SCR-dependent positive feedback loop for SCR transcription. Our studies with SHR and SCR homologs from rice suggest that this mechanism is evolutionarily conserved, providing a plausible explanation why nearly all plants have a single layer of endodermis. [ABSTRACT FROM AUTHOR]

Published
2007
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