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9月16日（月） 9：00～12:00 A 会場
「Beyond Fibonacci patterns and the golden angle: phyllotactic variations and their cellular origin」

Organizers

Xiaofeng Yin（The University of Tokyo）,　Miho Kitazawa（Osaka University）

Mechanisms of the regular arrangement of plant organs are well understood thanks to recent molecular and theoretical studies. These studies are, however, targeting mainly the regular phyllotactic patterns represented by Fibonacci spirals. In this symposium, we focus on the “unusual” phyllotactic patterns across various plant species, from bryophytes to angiosperms. To elucidate the cellular basis and the evolutionary origin of organ arrangements, we discuss the variation of organ arrangements from both experimental and theoretical aspects.

9:00～9:30 2aSA01 Plant model systems in phyllotaxis research – from Physcomitrella patens to Verbena officinalis
Beata Zagórska-Marek（Institute of Experimental Biology, University of Wroclaw, Poland）

9:30～9:50 2aSA02 Breaking the symmetry: insights from morphological and theoretical analysis of orixate phyllotaxis
Takaaki Yonekura，Munetaka Sugiyama（Botanical Garden, University of Tokyo）

9:50～10:20 2aSA03 A phyllotaxis model for intra- and inter-specific variation in floral ontogeny
Miho Kitazawa1,2，Koichi Fujimoto2（1CELAS, Osaka Univ.，2Grad. Sch. Sci., Osaka Univ.）

10:20～10:50 2aSA04 Phyllotaxis in bryophytes: Correlation between apical cell segmentation and phyllotactic patterns
Masaki Shimamura，Rios Diana（Graduate School of Integrated Science for life, Hiroshima Univ. ）

10:50～11:10 2aSA05 How does cell division generate phyllotactic pattern in bryophytes?
Naoya Kamamoto1，Katsuyoshi Matsushita1，Mitsuyasu Hasebe2，Koichi Fujimoto1（1Sci., Osaka Univ.，2Okazaki Inst., NIBB）

11:10～11:40 2aSA06 Developmental patterning of head-like inflorescences in Asteraceae
Teng Zhang1，Mikolaj Cieslak2，Feng Wang1，Suvi K. Broholm1，Teemu H. Teeri1，Przemyslaw Prusinkiewicz2，Paula Elomaa1（1University of Helsinki, Department of Agricultural Sciences，2University of Calgary, Department of Computer Science）