Evolutionary developmental genetics of teeth and odontodes in jawed vertebrates: a perspective from the study of elasmobranchs

Most extant vertebrates display a high variety of tooth and tooth‐like organs (odontodes) that vary in shape, position over the body and nature of composing tissues. The development of these structures is known to involve similar genetic cascades and teeth and odontodes are believed to share a commo...

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Bibliographic Details
Published in:Journal of fish biology 2021-04, Vol.98 (4), p.906-918
Main Authors: Berio, Fidji, Debiais‐Thibaud, Mélanie
Format: Article
Language:English
Subjects:
Animal biology
Animals
Biodiversity
Biological Evolution
Body organs
Cascades
Comparative analysis
development
Development Biology
Developmental genetics
Developmental stages
Divergence
Elasmobranchii - classification
Elasmobranchii - embryology
Elasmobranchii - genetics
Embryos
Evolution
Evolutionary genetics
Gene expression
Gene Expression Profiling
Genetics
Interspecific
Life Sciences
Marine fishes
Mice
Molars
Morphogenesis
odontode
Odontogenesis - genetics
Organs
Pharynx
Populations and Evolution
Scyliorhinus canicula
Sharks
Sharks - embryology
Teeth
tooth
Tooth - embryology
Vertebrate Zoology
Vertebrates
Vertebrates - classification
Vertebrates - embryology
Vertebrates - genetics
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Summary:Most extant vertebrates display a high variety of tooth and tooth‐like organs (odontodes) that vary in shape, position over the body and nature of composing tissues. The development of these structures is known to involve similar genetic cascades and teeth and odontodes are believed to share a common evolutionary history. Gene expression patterns have previously been compared between mammalian and teleost tooth development but we highlight how the comparative framework was not always properly defined to deal with different tooth types or tooth developmental stages. Larger‐scale comparative analyses also included cartilaginous fishes: sharks display oral teeth and dermal scales for which the gene expression during development started to be investigated in the small‐spotted catshark Scyliorhinus canicula during the past decade. We report several descriptive approaches to analyse the embryonic tooth and caudal scale gene expressions in S. canicula. We compare these expressions wih the ones reported in mouse molars and teleost oral and pharyngeal teeth and highlight contributions and biases that arise from these interspecific comparisons. We finally discuss the evolutionary processes that can explain the observed intra and interspecific similarities and divergences in the genetic cascades involved in tooth and odontode development in jawed vertebrates.
ISSN:0022-1112
1095-8649
DOI:10.1111/jfb.14225