澳洲肺鱼的文献研究摘要 / Publication research summaries · 3 entries
中文内容为资料集译写。每条说明所依据的摘要或正文范围。 / Chinese text is prepared for this collection. Summary evidence is identified for each entry.
Nature全文 PDF巨大的肺鱼基因组阐明脊椎动物征服陆地的过程
Giant lungfish genome elucidates the conquest of land by vertebrates
Nature · 2021
依据索引收录的作者摘要概括。
Summary based on the indexed author abstract.
主要发现 Key findings
澳洲肺鱼巨大基因组主要由重复序列扩张形成，保留祖先染色体同源关系，并具有鳍部肢体样基因表达及空气呼吸相关变化。
The giant Australian lungfish genome is expanded largely by repeats, retains ancestral chromosome homologies and shows limb-like fin gene expression and air-breathing-associated changes.
结论 Conclusions
肺鱼为理解登陆前遗传准备提供现生参照，而不是证明单一基因变化即可导致登陆。
Lungfish provides a living reference for genetic preadaptations to land, not evidence that any single genetic change caused terrestrialization.
Science全文 PDF肉鳍鱼鳍的个体发育阐明具指手部的起源
Sarcopterygian fin ontogeny elucidates the origin of hands with digits.
Science Advances · 2020
依据作者摘要概括。
Inspected PubMed abstract indexed by Europe PMC; archived full text does not imply full-text review.
主要发现 Key findings
澳洲肺鱼鳍中存在表达 hoxa13 的类似远端肢区，但缺少四足动物若干与指形成相关的表达扩展。该模式提示指发育程序先出现在轴后鳍辐骨中，随后向前扩展。
Australian lungfish fins express hoxa13 in an autopod-like developmental domain but lack several digit-specific expression expansions seen in tetrapods. The pattern suggests that the digit program arose in postaxial fin radials before expanding anteriorly.
结论 Conclusions
手部可能通过改造已有的鳍远端发育程序形成，而非出现完全全新的发育区域。
Hands evolved through modification of an existing distal-fin developmental program rather than the appearance of an entirely new domain.
PNAS全文 PDF核蛋白编码基因支持肺鱼而非腔棘鱼是陆生脊椎动物最近的现生亲属
Nuclear protein-coding genes support lungfish and not the coelacanth as the closest living relatives of land vertebrates.
PNAS · 2004
依据作者摘要概括。
Inspected PubMed abstract indexed by Europe PMC; archived full text does not imply full-text review.
主要发现 Key findings
研究分别及联合分析澳洲、非洲、南美肺鱼与印尼腔棘鱼的 Rag1 和 Rag2 序列。多种统计方法一致支持肺鱼为陆生脊椎动物最近的现生姊妹群。
Rag1 and Rag2 sequences from Australian, African and South American lungfishes and the Indonesian coelacanth were analyzed separately and together. Multiple statistical approaches consistently recovered lungfishes as the living sister group of land vertebrates.
结论 Conclusions
两个核基因支持肺鱼与四足动物的近缘关系，为登陆演化提供分子背景。
The two nuclear genes support a lungfish–tetrapod relationship, providing molecular context for the transition onto land.