Grass inflorescence architecture and evolution: the origin of novel signaling centers

A central goal of evo-devo is to understand how morphological diversity arises from existing developmental mechanisms, requiring a clear, predictive explanatory framework of the underlying developmental mechanisms. Despite an ever-increasing literature on genes regulating grass inflorescence develop...

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Bibliographic Details
Published in:The New phytologist 2017-10, Vol.216 (2), p.367-372
Main Author: Whipple, Clinton J.
Format: Article
Language:English
Subjects:
Angiosperms
Architecture
Barley
Biological Evolution
Botany
Boundaries
boundary domain
Complexity
Consumer goods
Corn
Cytochrome
Cytochrome P450
Decay
development
Developmental biology
Diagnostic systems
Evolution
Flexible manufacturing systems
Flowers
Gene expression
Genes
Glumes
grass
Grasses
Homology
inflorescence
Inflorescence - anatomy & histology
Inspection
Leaves
Marine fishes
Mathematical models
Meristem - anatomy & histology
Meristems
miRNA
Models, Biological
Morphogenesis
Morphology
Mutants
Neck
Organs
Pattern formation
Phosphates
Phosphorylation
Plant diversity
Plant morphology
Plant reproductive structures
Poaceae - anatomy & histology
Regulators
Ribonucleic acid
Rice
RNA
Signal Transduction
signaling
Sorghum
Sugar
Tansley insight
Taxa
Tissues
Transcription factors
Trehalose
Wheat
Zinc
Zinc finger proteins
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Summary:A central goal of evo-devo is to understand how morphological diversity arises from existing developmental mechanisms, requiring a clear, predictive explanatory framework of the underlying developmental mechanisms. Despite an ever-increasing literature on genes regulating grass inflorescence development, an effective model of inflorescence patterning is lacking. I argue that the existing framework for grass inflorescence development, which invokes homeotic shifts in multiple distinct meristem identities, obscures a recurring theme emerging from developmental genetic studies in grass models, that is that inflorescence branching is regulated by novel localized signaling centers. Understanding the origin and function of these novel signaling centers will be key to future evo-devo work on the grass inflorescence.
ISSN:0028-646X
1469-8137
DOI:10.1111/nph.14538