Phyllotaxis: from patterns of organogenesis at the meristem to shoot architecture - Archive ouverte HAL
Journal Articles (Review Article) Wiley Interdisciplinary Reviews: Developmental Biology Year : 2016

Phyllotaxis: from patterns of organogenesis at the meristem to shoot architecture

Abstract

The primary architecture of the aerial part of plants is controlled by the shoot apical meristem, a specialized tissue containing a stem cell niche. The iterative generation of new aerial organs, (leaves, lateral inflorescences and flowers) at the meristem follows regular patterns, called phyllotaxis. Phyllotaxis has long been proposed to self-­‐organize from the combined action of growth and of inhibitory fields blocking organogenesis in the vicinity of existing organs in the meristem. In this review we will highlight how a combination of mathematical/computational modeling and experimental biology has demonstrated that the spatio-­‐temporal distribution of the plant hormone auxin controls both organogenesis and the establishment of inhibitory fields. We will discuss recent advances showing that auxin likely acts through a combination of biochemical and mechanical regulatory mechanisms that control not only the pattern of organogenesis in the meristem but also post-­‐meristematic growth, to shape the shoot.
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Dates and versions

hal-01413095 , version 1 (09-12-2016)

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Carlos S Galvan-­‐ampudia, Anaïs M Chaumeret, Christophe Godin, Teva Vernoux. Phyllotaxis: from patterns of organogenesis at the meristem to shoot architecture. Wiley Interdisciplinary Reviews: Developmental Biology, 2016, 5 (4), pp.460 - 473. ⟨10.1002/wdev.231⟩. ⟨hal-01413095⟩
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