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首页> 外文期刊>Genetic Resources and Crop Evolution >New data and phylogenetic placement of the enigmatic Old World lupin: Lupinus mariae-josephi H. Pascual
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New data and phylogenetic placement of the enigmatic Old World lupin: Lupinus mariae-josephi H. Pascual

机译：神秘的旧世界羽扇豆的新数据和系统发生的位置：羽扇豆mariae-josephi H. Pascual

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摘要

Lupinus mariae-josephi H. Pascual is an intriguing lupin species recently discovered in the Mediterranean region. New data from seed coat micromorphology, cytology, and DNA sequences were generated in order to extend our knowledge on this species and to examine its evolutionary relationships within Lupinus. This species shows morphological similarities with the Mediterranean smooth seeded species of sections Micranthi and Lutei. It shares the same chromosome number 2n = 52 with the latter Old World taxa, but also with unifoliolate lupins from Florida. Besides, L. mariae-josephi exhibited a seed coat micromorphology “intermediate” between the rough and the smooth seed coat types. Phylogenetic analyses using ITS and ETS nrDNA spacers, and the LEGCYC1A locus supported L. mariae-josephi as a distinct Old World line, placed out of the Scabrispermae, but without clear placement amongst the Mediterranean smooth-seeded lineages. Unexpectedly, LEGCYC1A data revealed phylogenetic affinities between L. mariae-josephi and L. villosus, a unifoliolate North American lupin that might have experienced a reticulated evolutionary process. All together, the data underline the phylogenetic interest of L. mariae-josephi in Lupinus and the need of additional investigations in order to definitely elucidate its enigmatic status. Moreover, as L. mariae-josephi is one of the rare Old World lupins strictly restricted to poor basic soils, it opens new perspectives of ecological and agronomic interests in the wide areas of poor calcareous soils in the Mediterranean region.
机译：羽扇豆（Lupinus mariae-josephi H. Pascual）是最近在地中海地区发现的一种有趣的羽扇豆种。从种皮的微观形态，细胞学和DNA序列中获得了新的数据，以便扩展我们对该物种的了解并检查其在羽扇豆属植物中的进化关系。该物种与Micranthi和Lutei部分的地中海平滑种子物种在形态上相似。它与后者的旧世界类群具有相同的染色体编号2n = 52，但与佛罗里达州的单叶羽扇豆也具有相同的染色体数。此外，玛丽亚·何塞菲（L. mariae-josephi）在粗糙和光滑种皮类型之间表现出“中间”的种皮微观形态。使用ITS和ETS nrDNA间隔子以及LEGCYC1A基因座进行的系统发育分析支持玛丽亚乳杆菌作为旧世界的独特品系，放置在Sc皮之外，但在地中海种苗中却没有明确的位置。出乎意料的是，LEGCYC1A数据显示了玛丽亚·约瑟夫乳杆菌和绒毛乳杆菌之间的系统发育亲缘关系，后者是北美单叶羽扇豆羽扇豆，可能经历了网状的进化过程。总之，这些数据强调了羽扇豆属在羽扇豆属中的系统发育意义，并需要进行进一步研究以明确阐明其神秘地位。此外，由于玛丽亚·约瑟夫乳杆菌是严格限制贫瘠的基础土壤的罕见的旧世界羽扇豆之一，因此为地中海地区贫瘠的钙质土壤的广大地区开辟了生态学和农艺学利益的新视野。

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