Did auxin play a crucial role in the evolution of novel body plans during the Late Silurian–Early Devonian radiation of land plants?
نویسندگان
چکیده
CONTENTS Introduction 85 Brief overview of Cambrian radiation of bilateral animals 86 Rapid diversification of animal phyla 86 Characteristic body plan of each phylum 86 Early establishment of body plan 87 Altered expression of embryonic genes resulting in new body plans 87 Silurian–Devonian radiation of land plants 88 Did early land plants diverge in a rapid evolutionary radiation? 88 Are the characteristic body plans of land plants established during embryonic development? 90 What developmental mechanisms act to generate plant body plans? 96 Did major changes in auxin regulation occur prior to the Silurian–Devonian radiation? 99
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