Distribution and biogeography of Sanguina snow algae: Fine-scale sequence analyses reveal previously unknown population structure.
Distribution and biogeography of Sanguina snow algae: Fine-scale sequence analyses reveal previously unknown population structure.
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DOI：
10.1002/ece3.6772
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发表时间：
2020-10
影响因子：
2.6
通讯作者：
Tucker AE
中科院分区：
文献类型：
--
作者：
Brown SP;Tucker AE
以往的研究表明，雪藻属(S.nivaloides和S.aurantia)中的雪藻物种没有表现出种群结构，尽管在全球(S.nivaloides)或整个北半球(S.aurantia)都有发现。然而，由于这些雪藻的遗传资源很少，而且没有基因组资源，因此缺乏对全球分布的系统生物地理研究。在这里，使用所有公开可获得的和以前未发表的内部转录间隔区2区的血吸虫序列，我们调查了这种据称在血吸虫物种中缺乏种群结构的说法是否得到了额外证据的支持。利用最小熵分解(MED)方法研究精细尺度的遗传种群结构，我们发现这些雪藻种群在很大程度上是不同的区域，并具有一些有趣的生物地理结构。这与目前被接受的观点相反，即血吸虫物种在其广阔的范围内缺乏任何可观察到的种群结构，并突显了精细(亚OTU)分析工具在描绘地理和遗传种群结构方面的效用。这项工作扩大了已知的橙色海藻的范围，并强调了开发遗传和基因组工具以进一步研究雪藻生物地理学的必要性。以往的研究表明，血吸虫属中的雪藻在发生和种群结构方面都是全球性的。使用所有公开可获得的和以前未发表的内部转录间隔区的血吸虫序列，我们调查了血吸虫在全球人群中普遍存在的说法是否得到了证据的支持。在这里，与目前公认的这些藻类种群的世界性性质直接相反，我们展示了全球种群结构，并强调了精细(亚OTU)分析工具在描绘地理和遗传种群结构方面的效用。
It has been previously suggested that snow algal species within the genus Sanguina (S. nivaloides and S. aurantia) show no population structure despite being found globally (S. nivaloides) or throughout the Northern Hemisphere (S. aurantia). However, systematic biogeographic research into global distributions is lacking due to few genetic and no genomic resources for these snow algae. Here, using all publicly available and previously unpublished Sanguina sequences of the Internal Transcribed Spacer 2 region, we investigated whether this purported lack of population structure within Sanguina species is supported by additional evidence. Using a minimum entropy decomposition (MED) approach to examine fine‐scale genetic population structure, we find that these snow algae populations are largely distinct regionally and have some interesting biogeographic structuring. This is in opposition to the currently accepted idea that Sanguina species lack any observable population structure across their vast ranges and highlights the utility of fine‐scale (sub‐OTU) analytical tools to delineate geographic and genetic population structure. This work extends the known range of S. aurantia and emphasizes the need for development of genetic and genomic tools for additional studies on snow algae biogeography. It has been previously suggested that snow algae within the genus Sanguina are globally cosmopolitan both in terms of occurrence and population structure. Using all publicly available and previously unpublished Sanguina sequences of the Internal Transcribed Spacer regions, we investigate whether this purported global population ubiquity of Sanguina is supported by evidence. Here, in direct opposition to the currently accepted cosmopolitan nature of these algae populations, we demonstrate global population structure and highlight the utility of fine‐scale (sub‐OTU) analytical tools to delineate geographic and genetic population structure.
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影响因子：
4.9
作者：
Buonomo, Roberto;Assis, Jorge;Serrao, Ester A.
通讯作者：
Serrao, Ester A.
影响因子：
1
作者：
KEELEY, SC;JONES, SB
通讯作者：
JONES, SB
DOI：
10.1007/978-3-540-92160-8_9
发表时间：
2010-01-01
期刊：
RELICT SPECIES: PHYLOGEOGRAPHY AND CONSERVATION BIOLOGY
影响因子：
--
作者：
Geml, Jozsef;Tulloss, Rodham E.;Taylor, D. Lee
通讯作者：
Taylor, D. Lee
影响因子：
10.7
作者：
Katoh K;Standley DM
通讯作者：
Standley DM
影响因子：
2.3
作者：
Brown, Shawn P.;Ungerer, Mark C.;Jumpponen, Ari
通讯作者：
Jumpponen, Ari