Detecting no natural hybridization and predicting range overlap in Saccharina angustata and Saccharina japonica
Detecting no natural hybridization and predicting range overlap in Saccharina angustata and Saccharina japonica
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检测甜椒和粳稻的无自然杂交并预测范围重叠
DOI：
10.1007/s10811-020-02300-3
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发表时间：
2020-10
影响因子：
3.3
通讯作者：
Delin Duan
中科院分区：
文献类型：
--
作者：
Jie Zhang;Norishige Yotsukura;Alex;er Jueterbock;Zi-Min Hu;Jorge Assis;Chikako Nagasato;Jianting Yao;Delin Duan
自然杂交在褐藻的进化过程中起着重要的作用，影响褐藻的适应性多样化和物种形成。然而，这种现象在糖藻中尚不为人所知。在北海道太平洋沿岸，食糖属（Saccharina angustata）与日本食糖属（Saccharina japonica var. japonica）和日本食糖属（S. japonica var. japonica）两个变种在分布上部分重叠，为研究食糖属种间杂交和基因渗透提供了良好的模式系统。基于13个高度可变的核微卫星和一个线粒体标记，我们首次评估了古鳗的遗传多样性水平，发现北海道太平洋海岸西部的Muroran - Shiranuka种群的遗传多样性最高。粳稻品种的遗传多样性高于杂交稻品种。在这两个标记的基础上，粳稻和鳗鲡之间存在显著的遗传分化（fst > 0.25, p < 0.05）。此外，这些近缘种间的遗传连通性较差，种间杂交有限。生态位模型预测了在未来气候情景下，日本沙蚕和古古沙蚕均向北扩张，两种沙蚕在堪察加半岛鄂霍次克海沿岸的分布范围重叠。这些海带的种间杂交和遗传多样性为海带的选择和培育以及未来野生种群的保护策略提供了依据。
Natural hybridization can play a significant role in evolutionary processes and influence the adaptive diversification and speciation of brown seaweeds. However, this phenomenon is as yet unknown in Saccharina kelps. Saccharina angustata and two varieties of Saccharina japonica ( S. japonica var. japonica and S. japonica var. diabolica ) partly overlap in distribution along the Pacific coast of Hokkaido, which makes them a good model system to study hybridization and introgression among species of the genus Saccharina . Based on 13 highly variable nuclear microsatellites and a mitochondrial marker, we assessed the genetic diversity levels of S. angustata for the first time and populations from Muroran to Shiranuka (western part of the Pacific coast in Hokkaido) exhibited highest genetic diversity. Genetic diversity of S. japonica was higher in S. japonica var. japonica as compared with S. japonica var. diabolica . There was significant genetic differentiation ( F ST > 0.25, p < 0.05) between S. japonica and S. angustata based on both markers. Moreover, there was poor genetic connectivity and limited interspecific hybridization among these closely related Saccharina species. Ecological niche models projected a northward expansion of both S. japonica and S. angustata under future climate scenarios and a range overlap between two species along the coast of Okhotsk Sea in Kamchatka Peninsula. The interspecific hybridization and genetic diversity among these kelps provide insights for kelp selection and cultivation as well as future conservation strategies of wild stocks.
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影响因子：
4.6
作者：
Assis J;Berecibar E;Claro B;Alberto F;Reed D;Raimondi P;Serrão EA
通讯作者：
Serrão EA
影响因子：
3.3
作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
通讯作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
影响因子：
3.7
作者：
Ardehed A;Johansson D;Sundqvist L;Schagerström E;Zagrodzka Z;Kovaltchouk NA;Bergström L;Kautsky L;Rafajlovic M;Pereyra RT;Johannesson K
通讯作者：
Johannesson K
洋流驱动了西北太平洋褐藻马尾藻种群的遗传连通性
影响因子：
3.9
作者：
Li Jing-Jing;Hu Zi-Min;Gao Xu;Sun Zhong-Min;Choi Han-Gil;Duan De-Lin;Endo Hikaru
通讯作者：
Endo Hikaru
影响因子：
5.3
作者：
Balakirev ES;Krupnova TN;Ayala FJ
通讯作者：
Ayala FJ