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The expression of AmphiMdp during amphioxus early development
Yushuang Lin1, Kailong Liang, Yanjun Zhang
1Life Science College, Institute of Developmental Biology, Shanda Nan Lu No. 27, Shandong University, Jinan 250100, China.
Abstract:
We report here the expression of AmphiMdp in embryos and larvae. Faint AmphiMdp transcripts were first detected in the mesendoderm at the mid-gastrula stage and later in the somites of the early neurula. Expression remained in somites throughout the neurula and early larval stages and then disappeared from the somites starting with the most anterior somite and progressing posteriorly. At the 48-h larval stage, transcripts were detected in the developing tail bud. No transcripts were detectable in the somites of the 72-h larva. The result suggests that AmphiMdp is involved in myogenesis in amphioxus.
Insights
Amphioxus MyoD (AmphiMdp) gene expression was tracked in developing embryos and larvae. This suggests AmphiMdp plays a crucial role in muscle development (myogenesis) in amphioxus.
Area of Science:
- Developmental Biology
- Molecular Biology
- Chordate Embryology
Background:
- Understanding gene expression patterns is crucial for deciphering developmental processes.
- Myogenesis, the formation of muscle tissue, is a fundamental aspect of embryonic development across many species.
Purpose of the Study:
- To investigate the expression patterns of the AmphiMdp gene during amphioxus embryogenesis and larval development.
- To elucidate the potential role of AmphiMdp in the myogenesis of amphioxus.
Main Methods:
- Whole-mount in situ hybridization was used to detect AmphiMdp transcripts.
- Expression analysis was performed at various developmental stages, including mid-gastrula, early neurula, and larval stages (48-h and 72-h).
Main Results:
- AmphiMdp transcripts were initially observed in the mesendoderm during the mid-gastrula stage.
- Expression was subsequently detected in the somites from the early neurula through early larval stages, with a posterior to anterior disappearance.
- By the 48-h larval stage, transcripts were found in the developing tail bud, and absent from somites by 72-h.
Conclusions:
- The dynamic expression pattern of AmphiMdp suggests its involvement in the differentiation and development of muscle tissues in amphioxus.
- AmphiMdp is a key gene potentially regulating myogenesis in this basal chordate model.
