Bidirectional natural hybridization between sympatric Ligularia vellerea and L. subspicata.
Bidirectional natural hybridization between sympatric Ligularia vellerea and L. subspicata.
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同域橐吾和L. subspicata之间的双向自然杂交
DOI：
10.1016/j.pld.2017.07.001
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发表时间：
2017-08
期刊：
影响因子：
4.8
通讯作者：
Gong X
中科院分区：
文献类型：
--
作者：
Ning H;Yu J;Gong X
自然杂交被认为是物种形成的重要途径，为生物多样性的进化提供了原材料。标题橐吾属卡斯的种间自然杂交。是横断山区橐吾属植物多样性的重要驱动因素。虽然以前曾报道过绒毡毛忍冬与穗花忍冬的自然杂交，但由于取样的限制，杂交方向并不确定。因此，本研究在前期研究的基础上，进一步取样更多的个体，并增加两个叶绿体DNA片段，以进一步验证绒毡毛忍冬与穗花忍冬的自然杂交，确定杂交方向。根据DNA序列（atpB-rbcL、trnL-rp 132、trnQ-5 'rps 16和核核糖体内转录间隔区）的数据，我们认为推测的杂种是绒蒿与穗花蒿杂交的初级产物，杂交是双向的。此外，同域分布的L. tongolensis显然没有参与杂交。但在部分野生野生种中，形态学特征与DNA数据的一致性较低，这可能表明绒蒿与野生种之间存在基因渐渗现象。
Natural hybridization has been regarded as a crucial pathway of speciation and provides the raw materials for the evolution of biodiversity. The interspecific natural hybridization of the genus Ligularia Cass. is universal and has been considered to be an important factor driving the high diversity of Ligularia species in the Hengduan Mountains, China. Although the natural hybridization between L. vellerea and L. subspicata was reported previously, the direction of hybridization was uncertain due to the limitation of sampling. Thus, in this study, we sampled more individuals and increased two fragments of chloroplast DNA on the basis of the previous study to further verify the natural hybridization between L. vellerea and L. subspicata and confirm the direction of hybridization. Based on DNA sequences (atpB-rbcL, trnL-rpl32, trnQ-5'rps16, and nuclear ribosomal internal transcribed spacer region) data, we concluded that putative hybrids were primary products of hybridization between L. vellerea and L. subspicata and the hybridization was bidirectional. Moreover, sympatric L. tongolensis was not apparently involved in the hybridization. Surprisingly, some pure L. subspicata individuals showed the disaccordance between morphology and DNA data, which might indicate that introgression occurs between L. vellerea and L. subspicata.
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影响因子：
3.3
作者：
Comes, HP;Abbott, RJ
通讯作者：
Abbott, RJ
影响因子：
4.9
作者：
Desplanque, B;Viard, F;van Dijk, H
通讯作者：
van Dijk, H
影响因子：
3.8
作者：
Buerkle, CA;Morris, RJ;Rieseberg, LH
通讯作者：
Rieseberg, LH
影响因子：
3.3
作者：
HEISER, CB
通讯作者：
HEISER, CB
DOI：
10.7677/ynzwyj201515082
发表时间：
2015-11-25
期刊：
Plant Diversity and Resources
影响因子：
--
作者：
He Wei-ying;Pan Yue-zhi
通讯作者：
Pan Yue-zhi