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Abstract <p>Expression of 11 genes of the <i>Hox</i> cluster (<i>SiHox1</i>, <i>2</i>, <i>3</i>, <i>5</i>, <i>6</i>, <i>7</i>, <i>8</i>, <i>9/10</i>, <i>11/13a</i>, <i>11/13b</i>, and <i>11/13c</i>) was assessed in the sea urchin <i>Strongylocentrotus intermedius</i> at early developmental stages, including the blastula (13 h post fertilization (hpf)), gastrula (35 hpf), prism (46 hpf), and pluteus (4 and 9 days post fertilization (dpf)) stages. Expression of <i>SiHox7</i>, <i>11/13b</i>, and <i>11/13c</i> was observed at the blastula stage; early activation of <i>11/13c</i> was detected for the first time in regular sea urchins. The expression level was very low at the gastrula and prism stages. The pluteus stage showed a significant increase in expression of all <i>Hox</i> cluster genes. Deviations from temporal collinearity of <i>Hox</i> gene expression in echinoderms are discussed.</p>

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Expression of HOX Cluster Genes in Early Larval Development of Sea Urchin Strongylocentrotus intermedius (Echinodermata, Echinoidea)

  • 期刊论文

  • 发表日期：

    2025年1月22日

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  • N. V. Ageenko,
  • O. V. Ezhova,
  • K. V. Kiselev,
  • A. I. Lukinykh,
  • V. V. Malakhov

摘要

Abstract

Expression of 11 genes of the Hox cluster (SiHox1, 2, 3, 5, 6, 7, 8, 9/10, 11/13a, 11/13b, and 11/13c) was assessed in the sea urchin Strongylocentrotus intermedius at early developmental stages, including the blastula (13 h post fertilization (hpf)), gastrula (35 hpf), prism (46 hpf), and pluteus (4 and 9 days post fertilization (dpf)) stages. Expression of SiHox7, 11/13b, and 11/13c was observed at the blastula stage; early activation of 11/13c was detected for the first time in regular sea urchins. The expression level was very low at the gastrula and prism stages. The pluteus stage showed a significant increase in expression of all Hox cluster genes. Deviations from temporal collinearity of Hox gene expression in echinoderms are discussed.