Dr. Saiko Yoshida (Institute of Science and Technology Austria (IST Austria))

2016. 10. 11 (Tue) 13:30 ~ 14:30

Conf. Room, Myodaiji (111)

Lab. Evol. Biol. Mitsuyasu Hasebe（7546）

  Formation of a multicellular body requires the coordinated development of organs/tissues. Unlike in animals, plant cells are immobile. Therefore, body patterns are determined by orientation of cell division planes, growth and the acquisition of different cell identities. Recent studies indicate that body patterning is regulated by tissue/cellular geometry and mechanical properties. By using Arabidopsis embryo, I have been studying the regulatory role of geometry and mechanics on pattern formation. Arabidopsis embryo is a good model to study morphogenesis because of its simple structure. Nevertheless, cell division pattern in Arabidopsis embryo has been mapped only in a 2D setting. This is because Arabidopsis embryo is small, located inside the thick seed coat and it is technically difficult to manipulate. Together with collaborators (Richard Smith group at the Max Planck Institute, Cologne), I have established a method to analyze the Arabidopsis embryo in 3D. Using the obtained data and computer modeling I have examined hypotheses regarding the regulation of cell division during embryogenesis. . I will introduce our result from the 3D analysis together with the latest unpublished data to discuss regulatory mechanism of body pattern formation in Arabidopsis embryo.

Publication List

1. Yoshida S, Barbier de Reuille P, Lane B, Bassel GW, Prusinkiewicz P, Smith RS, Weijers D. Genetic control of plant development by overriding a geometric division rule. Developmental Cell. 2014, 29: 75-87

2. Yoshida S, Saiga S, Weijers D. Auxin regulation of embryonic root formation. Plant and Cell Physiology. 2013, 54: 325-32