Virtual phyllotaxis and real plant model cases

Functional Plant Biology : FPB
Beata Zagórska-Marek, Marcin Szpak

Abstract

Phyllotactic pattern results from genetic control of lateral primordia size (physiological or physical) relative to the size of organogenic lateral surface of shoot apical meristem (SAM). In order to understand the diversity of patterns and ontogenetic transitions of phyllotaxis we have developed a geometric model allowing changes of the above proportion in a computer simulation of SAM's growth. The results of serial simulations confirmed that many phyllotactic patterns (including most esoteric ones) and ontogenetic transitions known from real plant model cases can be easily obtained in silico. Properties of virtual patterns often deviated from those of ideal mathematical lattices but closely resembled those of the natural ones. This proved the assumptions of the model, such as initiation in the first available space or ontogenetic changes in primordia size, to be quite realistic. Confrontation of simulation results with some sequences of real phyllotactic patterns (case study Verbena) questions the autonomy of SAM in its organogenic activity and suggests the involvement of unknown signal positioning primordia in a non-random manner in the first available space.

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Citations

Jun 14, 2016·Royal Society Open Science·Jonathan SwintonUNKNOWN MSI Turing's Sunflower Consortium
Jul 26, 2017·PeerJ·Anna Jakubska-BusseEdyta Magdalena Gola
Mar 25, 2017·Journal of Experimental Botany·Paula Elomaa
Aug 9, 2011·Annals of Botany·Peter K Endress, Joseph E Armstrong
Oct 17, 2020·Scientific Reports·H S AnsellN K Wilkin
Mar 28, 2021·Proceedings of the National Academy of Sciences of the United States of America·Teng ZhangPrzemyslaw Prusinkiewicz
Apr 7, 2021·Journal of Plant Research·Miho S Kitazawa
Apr 9, 2021·Journal of Plant Research·Beata Zagórska-MarekKlaudia Chmiel

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