Elaboration of bilateral symmetry across Knautia macedonica capitula related to changes in ventral petal expression of CYCLOIDEA-like genes

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• 作者：Brent A. Berger ; Veronica Thompson ; Aedric Lim ; Vincent Ricigliano…
• 关键词：CYCLOIDEA ; Floral symmetry ; Knautia ; Capitula ; qPCR
• 刊名：EvoDevo
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：7
• 期：1
• 全文大小：1,396 KB
• 刊物主题：Developmental Biology; Evolutionary Biology; Zoology; Paleontology; Plant Genetics & Genomics;
• 出版者：BioMed Central
• ISSN：2041-9139

文摘

Background Shifts in floral form across angiosperms, particularly from radially symmetrical to bilaterally symmetrical flowers, are often associated with shifts in speciation rates and changes in pollination syndrome. Growing evidence across both rosids and asterids indicates that CYCLOIDEA (CYC)-like transcription factors from the TCP gene family play a role in establishing the dorsoventral pattern of flower symmetry, which affects the development of both the corolla and androecium. Previous studies of CYC-like genes, especially of the CYC2 clade, indicate that these genes are dorsally restricted in bilaterally symmetrical flowers. Also, gene duplication of CYC-like genes often correlates with shifts in floral form in both individual flowers and head-like inflorescences (capitula).