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Perennial Growth, Form and Architecture of Angiosperm Trees

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Comparative and Evolutionary Genomics of Angiosperm Trees

Part of the book series: Plant Genetics and Genomics: Crops and Models ((PGG,volume 21))

Abstract

The architecture of angiosperm trees reflects multiple developmental processes that interact to produce complex forms. In this review, I summarize our understanding of major developmental processes determining angiosperm tree architecture, as well as what is known about underlying molecular mechanisms and dynamical models that recreate developmental patterns. Meristem maintenance, internode elongation, branching, and vascular development all contribute to the modular architecture of trees. The regulation of these processes involves activator-inhibitor dynamics, and controlled transport of key hormone regulators in spatial scales ranging from cell-to-cell to long-distance are central to most of these patterning processes. A model of angiosperm tree architectural dynamics that is grounded in molecular details is on the horizon for at least some model tree species, but additional comparative genomics approaches will be required to determine how the stunning diversity of angiosperm tree architectures arose from evolutionarily conserved building blocks.

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Correspondence to David J. Hearn .

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Hearn, D.J. (2016). Perennial Growth, Form and Architecture of Angiosperm Trees. In: Groover, A., Cronk, Q. (eds) Comparative and Evolutionary Genomics of Angiosperm Trees. Plant Genetics and Genomics: Crops and Models, vol 21. Springer, Cham. https://doi.org/10.1007/7397_2016_25

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