Phyllotaxis and Symmetry in Angiosperms (ISTE Invoiced)

by: Jean-Paul Walch (Author),Solange Blaise(Author)

Publisher: Wiley-ISTE

Edition: 1st

Publication Date: 2024/8/13

Language: English

Print Length: 256 pages

ISBN-10: 1786309890

ISBN-13: 9781786309891

Book Description

Symmetry and the causes of shifts in different types of symmetries in flowers follow specific pattes that are ruled by developmental and genetic factors.Using a unified system of phyllotaxic equations, we have modeled the molecular mechanisms and pressure forces that act in inflorescence and floral meristems, giving flowers their organ arrangement.In this book, we state general physical principles, whereby the symmetry of the perianth is derived from the symmetry of certain TCP gene expression. Thus, we define the interplay between the expression of CYC2-like genes and the phyllotactic mechanisms.This new evo-devo approach is applied to major groups of angiosperms with predominantly actinomorphic flowers (in which rare zygomorphy is positional) and groups with mainly bilaterally symmetrical flowers (in which zygomorphy is constitutional). It has thus allowed us to revisit the contributions of the great floral morphologists of the 20th and early 21st centuries.

About the Author

Symmetry and the causes of shifts in different types of symmetries in flowers follow specific pattes that are ruled by developmental and genetic factors.Using a unified system of phyllotaxic equations, we have modeled the molecular mechanisms and pressure forces that act in inflorescence and floral meristems, giving flowers their organ arrangement.In this book, we state general physical principles, whereby the symmetry of the perianth is derived from the symmetry of certain TCP gene expression. Thus, we define the interplay between the expression of CYC2-like genes and the phyllotactic mechanisms.This new evo-devo approach is applied to major groups of angiosperms with predominantly actinomorphic flowers (in which rare zygomorphy is positional) and groups with mainly bilaterally symmetrical flowers (in which zygomorphy is constitutional). It has thus allowed us to revisit the contributions of the great floral morphologists of the 20th and early 21st centuries.