法国国家农业食品与环境研究院Yann Guiguen等研究人员合作发现，基因组结构决定硬骨鱼的早期多样化
基于七个高质量的海鲢总目（海鲢、鳗鱼）新基因组组合，研究人员人员重新考察了硬骨鱼系统发育的最深层分支的拓扑结构，主题独立基因序列和染色体重排系统发育方法。这些分析汇集到一个单一的场景，明确地将海鲢总目和骨舌总目（巨骨舌鱼、象鼻鱼）置于所有其他硬骨鱼的单系姐妹组，即鲱形总群谱系（斑马鱼、青鳉）。这一发现解决了50多年来关于这些谱系演化关系的争议，并强调了结合不同级别的全基因组信息来解决复杂系统发育的力量。
研究人员表示，准确的物种系统发育是所有演化研究的先决条件。硬骨鱼是现存脊椎动物中最大和最多样化的群体，但它们三个最古老的现存谱系之间的关系仍然没有解决。
附：英文原文
Title: Genome structures resolve the early diversification of teleost fishes
Author: Elise Parey, Alexandra Louis, Jerome Montfort, Olivier Bouchez, Céline Roques, Carole Iampietro, Jerome Lluch, Adrien Castinel, Cécile Donnadieu, Thomas Desvignes, Christabel Floi Bucao, Elodie Jouanno, Ming Wen, Sahar Mejri, Ron Dirks, Hans Jansen, Christiaan Henkel, Wei-Jen Chen, Margot Zahm, Cédric Cabau, Christophe Klopp, Andrew Thompson, Marc Robinson-Rechavi, Ingo Braasch, Guillaume Lecointre, Julien Bobe, John H. Postlethwait, Camille Berthelot, Hugues Roest Crollius, Yann Guiguen
Issue&Volume: 2023-02-10
Abstract: Accurate species phylogenies are a prerequisite for all evolutionary research. Teleosts are the largest and most diversified group of extant vertebrates, but relationships among their three oldest extant lineages remain unresolved. On the basis of seven high-quality new genome assemblies in Elopomorpha (tarpons, eels), we revisited the topology of the deepest branches of the teleost phylogeny using independent gene sequence and chromosomal rearrangement phylogenomic approaches. These analyses converged to a single scenario that unambiguously places the Elopomorpha and Osteoglossomorpha (arapaima, elephantnose fish) in a monophyletic sister group to all other teleosts, i.e., the Clupeocephala lineage (zebrafish, medaka). This finding resolves more than 50 years of controversy on the evolutionary relationships of these lineages and highlights the power of combining different levels of genome-wide information to solve complex phylogenies.
DOI: abq4257
Source: https://www.science.org/doi/10.1126/science.abq4257