Soren R. Schipper, Jade Shivak, Katherine R. Hind, K. Miller, Jeffery R. Hughey, P. Gabrielson, P. Martone
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引用次数: 0
摘要
摘要:为了确定红铃虫是红铃虫属(Corallina chilensis)的一个独立种还是一个变种(即C. officinalis var. chilensis),我们使用psbA、COI-5P、rbcL或这些基因区域的某些组合对来自世界各地的75个红铃虫标本进行了分子系统发育分析。通过将这些DNA序列与从模式标本中获得的序列进行比较,其中包括达尔文(C. Darwin 2151)从智利瓦尔帕莱索收集的chilensis同种型中获得的263 bp rbcL序列。来自chilensis同种型的DNA序列与来自加拿大不列颠哥伦比亚省的未命名珊瑚的DNA序列以及先前发表的来自东北和东南太平洋的DNA序列相匹配。在系统发育分析中,含有同型辣椒的枝与officinalis标本有明显的区别。尽管在形态上存在差异,但来自不列颠哥伦比亚省种群的chilensis叶片与k tzing对chilensis的原始描述相匹配。这些数据支持了辣椒是一个独特的物种,而不是officinalis的变种,并且分布在两个半球的结论。虽然本研究有力地支持了珊瑚是一个独特的物种,但由于个体基因树不一致,珊瑚种之间的系统发育关系仍然难以捉摸。
Reinstatement of Corallina chilensis (Corallinaceae, Rhodophyta) based on DNA sequencing of the type material collected by Darwin
ABSTRACT To determine whether Corallina chilensis is a distinct species or a variety (i.e. C. officinalis var. chilensis) of the generitype of Corallina, molecular phylogenetic analyses were performed using psbA, COI-5P, rbcL, or some combination of these gene regions from 75 voucher specimens representing Corallina collections from around the world. Names were applied by comparing these DNA sequences with sequences obtained from type specimens, including a 263 bp rbcL sequence from an isotype of C. chilensis collected by Darwin (C. Darwin 2151) from Valparaiso, Chile. DNA sequences from the C. chilensis isotype matched unnamed coralline DNA sequences from British Columbia, Canada, and previously published DNA sequences from the northeast and southeast Pacific. The clade containing the isotype of C. chilensis was distinct from C. officinalis specimens in phylogenetic analyses. Although morphologically variable, fronds of C. chilensis from British Columbia populations matched Kützing’s original description of C. officinalis var. chilensis. These data support the conclusion that C. chilensis is a distinct species, not a variety of C. officinalis, and is distributed in both hemispheres. While this study strongly supported C. chilensis as a distinct species, phylogenetic relationships among Corallina species remain elusive because individual gene trees are not congruent.
期刊介绍:
Phycologia is published bimonthly by the International Phycological Society and serves as a publishing medium for information about any aspect of phycology. Membership in the Society is not necessary for publication. Submitted manuscripts cannot be previously published or submitted elsewhere. Copyright ownership of all accepted papers is held by the International Phycological Society.