Genetic Control of Plant Development by Overriding a Geometric Division Rule

Yoshida, Saiko; Barbier de Reuille, Pierre; Lane, Brendan; Bassel, George W.; Prusinkiewicz, Przemyslaw; Smith, Richard Simon; Weijers, Dolf (2014). Genetic Control of Plant Development by Overriding a Geometric Division Rule. Developmental cell, 29(1), pp. 75-87. Cell Press 10.1016/j.devcel.2014.02.002

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Formative cell divisions are critical for multicellular patterning. In the early plant embryo, such divisions follow from orienting the division plane. A major unanswered question is how division plane orientation is genetically controlled, and in particular whether this relates to cell geometry. We have generated a complete 4D map of early Arabidopsis embryogenesis and used computational analysis to demonstrate that several divisions follow a rule that uses the smallest wall area going through the center of the cell. In other cases, however, cell division clearly deviates from this rule, which invariably leads to asymmetric cell division. By analyzing mutant embryos and through targeted genetic perturbation, we show that response to the hormone auxin triggers a deviation from the ``shortest wall'' rule. Our work demonstrates that a simple default rule couples division orientation to cell geometry in the embryo and that genetic regulation can create patterns by overriding the default rule.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Development

UniBE Contributor:

Yoshida, Saiko; Barbier de Reuille, Pierre and Smith, Richard Simon

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

1534-5807

Publisher:

Cell Press

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

06 Jun 2014 10:53

Last Modified:

08 Sep 2015 11:45

Publisher DOI:

10.1016/j.devcel.2014.02.002

BORIS DOI:

10.7892/boris.52629

URI:

https://boris.unibe.ch/id/eprint/52629

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