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您的检索式：作者名="Jaume Pellicer"
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| 1 | Polyploidy does not control all: Lineage‐specific average chromosome length constrains genome size evolution in ferns显示文摘Recent studies investigating the evolution of genome size diversity in ferns have shown that they have a distinctive genome profile compared with other land plants. Ferns are typically characterized by possessing medium‐sized genomes, although a few lineages have evolved very large genomes. Ferns are different from other vascular plant lineages as they are the only group to show evidence for a correlation between genome size and chromosome number. In this study, we aim to explore whether the evolution of fern genome sizes is not only shaped by chromosome number changes arising from polyploidy but also by constraints on the average amount of DNA per chromosome. We selected the genus Asplenium L. as a model genus to study the question because of the unique combination of a highly conserved base chromosome number and a high frequency of polyploidy. New genome size data for Asplenium taxa were combined with existing data and analyzed within a phylogenetic framework. Genome size varied substantially between diploid species, resulting in overlapping genome sizes among diploid and tetraploid spleenworts. The observed additive pattern indicates the absence of genome downsizing following polyploidy. The genome size of diploids varied non‐randomly and we found evidence for clade‐specific trends towards larger or smaller genomes. The 578‐fold range of fern genome sizes have arisen not only from repeated cycles of polyploidy but also through clade‐specific constraints governing accumulation and/or elimination of DNA. | Hong‐Mei Liu Libor Ekrt Petr Koutecky Jaume Pellicer Oriane Hidalgo Jeannine Marquardt Fatima Pustahija Atsushi Ebihara Sonja Siljak‐Yakovlev Mary Gibby Ilia Leitch Harald Schneider | 2019 | Journal of Systematics and Evolution2019，57，4： | 1 |
| 2 | Phylogeographic insights of the lowland species Cheirolophus sempervirens in the southwestern Iberian Peninsula显示文摘西南的伊比利亚人半岛是一个重要 biogeographic 区域,显示出高生物多样性层次并且招待为欧洲植物群的几通常认为的冰川的 refugia。这里,我们学习地中海的基因差异和结构,越过它在 SW 伊伯利亚半岛的整个分发范围的 thermophilous 植物 Cheirolophus sempervirens (Asteraceae ) ,解开一些塑造这个南部的 refugia 热点的一般 biogeographic 模式的一个工具。空基因差异在定序屏蔽的 cpDNA 被观察。尽管如此, AFLP 数据揭示了在人口之中的高水平基因区别相关到他们的地理地点。我们的结果在更温暖的阶段由于殖民向北在冰川的时期和随后的创始人效果期间在南部的伊比利亚人 refugia 建议更长的种类坚持(即,南部的丰富到北纯净模式) 。另外,我们的 phylogeographic 分析在 Ch 以内显示二个分开的基因系的存在。sempervirens,在 refugia 以内与 refugia 一致为 SW 伊伯利亚半岛支持多重次要的 refugia 的假设模型。 | Daniel Vitales Alfredo Garcia-Fernandez Teresa Garnatje Jaume Pellicer Joan Valles | 2016 | Journal of Systematics and Evolution2016，54，1： | 0 |
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