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Complete Mitochondrial Genomes Reveal Population-Level Patterns in the Widespread Red Alga Gelidiella fanii (Gelidiales, Rhodophyta)
Frontiers in Marine Science ( IF 2.8 ) Pub Date : 2020-10-08 , DOI: 10.3389/fmars.2020.583957
Ga Hun Boo , Mayalen Zubia , Jeffery R. Hughey , Alison R. Sherwood , Mutue T. Fujii , Sung Min Boo , Kathy Ann Miller

Although complete mitogenomic data have been widely applied in human and other animal population studies, they are extremely limited for florideophycean red algal populations. Gelidiella fanii is a recently described rhodophyta, previously misidentified as G. acerosa, a cosmopolitan agar-yielding species from tropical to subtropical waters. To decipher patterns in genetic diversity and geographic distribution for G. fanii, we obtained 10 complete mitogenomes including two outgroups, G. acerosa and G. flabella. The mitogenomes ranged in size from 25,223 to 25,281 bp and had 48 genes, which are similar in general structure, gene order and content, and presence of a group II intron. Phylogenomic analysis revealed that G. fanii was monophyletic and clearly separate from G. acerosa. The range of G. fanii was extended from Southeast Asia and northern Australia to Eritrea, Juan de Nova Island, and Kenya in the west, and to Hawai‘i and Tetiaroa Atoll to the east. Haplotype network analysis of cox1 revealed seven geographically structured groups: Southeast Asia, Kenya/Juan de Nova Island, Indonesia, northern Australia, the Philippines, Tetiaroa Atoll, and Hawai‘i. This regional structure has likely resulted from the separation and isolation of an ancient widespread population during the Pleistocene. This study demonstrates that mitogenome sequencing is a powerful genotyping tool for studies of genetic diversity, biogeography, and conservation of economically valuable marine algal species.

中文翻译:

完整的线粒体基因组揭示了广泛分布的红藻 Gelidiella fanii(Gelidiales、Rhodophyta)的种群水平模式

尽管完整的有丝分裂基因组数据已广泛应用于人类和其他动物种群研究,但它们对于 florideophycean 红藻种群极为有限。Gelidiella fanii 是最近描述的一种红藻,以前被误认为是 G. acerosa,一种从热带到亚热带水域的世界性琼脂生产物种。为了破译 G. fanii 的遗传多样性和地理分布模式,我们获得了 10 个完整的有丝分裂基因组,包括两个外群,G. acerosa 和 G. flabella。有丝分裂基因组的大小从 25,223 到 25,281 bp 不等,有 48 个基因,它们在一般结构、基因顺序和内容以及 II 组内含子的存在方面相似。系统发育分析表明 G. fanii 是单系的,与 G. acerosa 明显分开。G 的范围。fanii 从东南亚和澳大利亚北部延伸至厄立特里亚、胡安德诺瓦岛和肯尼亚西部,东至夏威夷和特蒂亚罗阿环礁。cox1 的单倍型网络分析揭示了七个地理结构组:东南亚、肯尼亚/胡安德诺瓦岛、印度尼西亚、澳大利亚北部、菲律宾、特蒂亚罗阿环礁和夏威夷。这种区域结构很可能是由于更新世古代广泛分布的人口的分离和隔离造成的。这项研究表明,有丝分裂基因组测序是一种强大的基因分型工具,可用于研究遗传多样性、生物地理学和具有经济价值的海藻物种的保护。cox1 的单倍型网络分析揭示了七个地理结构组:东南亚、肯尼亚/胡安德诺瓦岛、印度尼西亚、澳大利亚北部、菲律宾、特蒂亚罗阿环礁和夏威夷。这种区域结构很可能是由于更新世古代广泛分布的人口的分离和隔离造成的。这项研究表明,有丝分裂基因组测序是一种强大的基因分型工具,可用于研究遗传多样性、生物地理学和具有经济价值的海藻物种的保护。cox1 的单倍型网络分析揭示了七个地理结构组:东南亚、肯尼亚/胡安德诺瓦岛、印度尼西亚、澳大利亚北部、菲律宾、特蒂亚罗阿环礁和夏威夷。这种区域结构很可能是由于更新世古代广泛分布的人口的分离和隔离造成的。这项研究表明,有丝分裂基因组测序是一种强大的基因分型工具,可用于研究遗传多样性、生物地理学和具有经济价值的海藻物种的保护。
更新日期:2020-10-08
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