Evolutionary aspects of positioning and identification of vertebrate limbs

Tamura, Koji; Kuraishi, Ritsu; Saito, Daisuke; Hara, Masaki; Ide, Hiroyuki; Yonei‐Tamura, Sayuri

doi:10.1046/j.1469-7580.2001.19910195.x

Cited by 23 publications

(22 citation statements)

References 52 publications

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“…8E,E 0 ). These ectopic limb buds would be expected to give rise to an additional limb skeleton in the flank, according to previous reports (Ohuchi et al, 1997;Yonei-Tamura et al, 1999;Tamura et al, 2001). In a typical sample (Fig.…”

Section: Effect Of Fgf Signaling On Apoptosis In the Flank Lpmsupporting

confidence: 66%

Role of paraxial mesoderm in limb/flank regionalization of the trunk lateral plate

Noro

Yuguchi

Sato

et al. 2011

Developmental Dynamics

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To understand the developmental mechanism that determines limb size and the consequent limb-to-trunk proportions in the tetrapod body, we investigated the role of the paraxial mesoderm in the specification of the limb and flank fields in the chick embryo. We found that the paraxial mesoderm subjacent to the limb field can affect the size of the limb bud along the anterior-posterior and proximal-distal axes. We also found that the paraxial mesoderm subjacent to the flank plays roles in suppressing the emergence and growth of the limb bud and in promoting flank-specific apoptosis in the lateral plate mesoderm. Our results suggest that signals from the paraxial mesoderm specify the limb and flank fields in the competent lateral plate mesoderm.

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Section: Effect Of Fgf Signaling On Apoptosis In the Flank Lpmsupporting

confidence: 66%

Role of paraxial mesoderm in limb/flank regionalization of the trunk lateral plate

Noro

Yuguchi

Sato

et al. 2011

Developmental Dynamics

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“…Cohn et al,'95). YoneiTamura et al (2008) demonstrated that this continuous lateral competency also occurred in the zebrafish and dogfish shark, and also that a dorsal competency strip could be artificially created dorsally in turtle and mouse (already been shown in the chick; Yonei- Tamura et al, '99;Tamura et al, 2001). Along with this, Yonei-Tamura et al (2008) showed that anteroposterior patterning was a feature in chondrichthyan fins, again as a common gnathostome feature.…”

Section: Similarity Between Unpaired and Paired Finsmentioning

confidence: 87%

Evolution of paired fins and the lateral somitic frontier

Johanson

2010

J Exp Zool Pt B

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Recent research on the evolutionary origins of the paired fins (pectoral and pelvic, evolving into the four tetrapod limbs) has focused on genetic, developmental, and fossil evidence. However, a combined synthesis of this evidence has largely been lacking. In living animals, identification of dorsal and ventrolateral zones of fin-producing competence, the distinction between primaxial and abaxial regions separated by the lateral somitic frontier, and the recognition that fin developmental mechanisms could have been co-opted from unpaired to paired fins can be used to evaluate vertebrate fin evolution, including fossil forms. These fossil taxa dominate early vertebrate history and possess an unusually wide variety of fin or fin-like structures; establishing homologies with the paired fins of jawed vertebrates has been challenging, in part owing to the absence of supporting girdles in most jawless vertebrates. An evolutionary scenario is proposed where these fin-like structures develop from somites, in the same manner as dorsal, unpaired fins. Girdles and the paired fins of osteostracans and jawed vertebrates develop from lateral plate mesoderm when the lateral somitic frontier and the abaxial region of the body evolve.

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“…In contrast, other recent ideas suggest that an ancestral vertebrate had a single pair of fins; either posterior 11 or anterior 12 . In tetrapods and teleosts, the identity of each pair of appendages is determined by expression of T-box genes Tbx5 and Tbx4, which are expressed in the anterior and posterior appendages, respectively 13 . In contrast, the cephalochordate Amphioxus has only one such gene, AmphiTbx4/5 (ref.…”

mentioning

confidence: 99%

“…The Tbox region alignment provides further evidence that ScTbx4 and ScTbx5 belong to Tbx4 and Tbx5 subfamilies respectively. Skate embryos may also have a Tbx5 gene 13 . In stage 28 dogfish embryos, ScTbx5 expression was observed in pectoral fin buds (Fig.…”

mentioning

confidence: 99%