2篇
您的检索式：作者名="Claudia Paetzold"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The odd one out or a hidden generalist:Hawaiian Melicope (Rutaceae)do not share traits associated with successful island colonization显示文摘Oceanic islands are unique in their species composition,which is defined by arrival of colonizers via long distance dispersal followed by establishment of species followed in some cases by adaptive radiation.Evolutionary biologists identified traits facilitating successful colonization of islands as including polyploidy,self-compatibility, herbaceousness and ability for long-distance dispersal.Successful establishment and evolutionary diversification of lineages on islands often involves shifts to woodiness and shifts in methods of outcrossing as well as changes in dispersal ability.The genus Meflicope colonized numerous archipelagos throughout the Pacific including the Hawaiian Islands,where the lineage comprises currently 54endemic species and represents the largest radiation of woody plants on the islands.The wide distributional range of the genus illustrates its high dispersibility,most likely, due to adaption to bird dispersal.Here we investigate ploidy in the genus using flow cytometry and chromosome counting.We find the genus to be paleopolyploid with 2n =4x =36,a ploidy level characterizing the entire subfamily Amyridoideae and dating back to at least the Palaeocene.Therefore Hawaiian MeHcope have not undergone recent polyploidization prior to colonization of the islands.Thus Nlelicope retained colonization success while exhibiting a combination of traits that typically characterize well established island specialists while lacking some traits associated to successful colonizers. | Claudia Paetzold Michael Kiehn Kenneth R.Wood Warren L.Wagner Marc S.Appelhans | 2018 | Journal of Systematics and Evolution2018，56，6： | 2 |
| 2 | RADseq resolves the phylogeny of Hawaiian Myrsine(Primulaceae)and provides evidence for hybridization显示文摘The Hawaiian radiation of Myrsine(primrose family,Primulaceae)is the only one among the ten most species-rich Hawaiian plant lineages that has never been included in a phylogenetic analysis.Our study is based on a RADseq dataset of nearly all Hawaiian Myrsine species and a Sanger sequencing dataset based on a worldwide sampling of Myrsine and related genera.Myrsine as a whole might be paraphyletic with respect to the monotypic Macaronesian genera Heberdenia and Pleiomeris,whereas Hawaiian Myrsine is resolved as monophyletic.The Sanger sequencing proved to be insufficient to resolve the Hawaiian lineage,whereas RADseq fully resolved the relationships with high support.Hawaiian Myrsine consists of three main lineages,of which one contains the majority of species and is mainly confined to Kauaʻi,and the other two lineages primarily consist of few widespread species.Although phylogenetic reconstructions delivered fully resolved and supported tree topologies,Quartet Sampling and HyDe analyses reveal phylogenetic incongruence throughout the phylogeny and provide the first molecular evidence of extensive hybridization in the lineage. | Marc S.Appelhans Claudia Paetzold Kenneth R.Wood Warren L.Wagner | 2020 | Journal of Systematics and Evolution2020，58，6： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员