M. Blázquez, I. Pérez-Vargas, I. Garrido-Benavent, M. Villar-dePablo, Y. Turégano, C. Frías-López, A. Sánchez-Gracia, A. de los Ríos, F. Gasulla, S. Pérez-Ortega
{"title":"无穷无尽的形式最令人沮丧:厘清 Ramalina decipiens 群(子囊菌目,子囊菌科)的物种界限,并描述六个新物种和该群的检索表","authors":"M. Blázquez, I. Pérez-Vargas, I. Garrido-Benavent, M. Villar-dePablo, Y. Turégano, C. Frías-López, A. Sánchez-Gracia, A. de los Ríos, F. Gasulla, S. Pérez-Ortega","doi":"10.3767/persoonia.2024.52.03","DOIUrl":null,"url":null,"abstract":"Oceanic islands have been recognized as natural laboratories in which to study a great variety of evolutionary processes. One such process is evolutionary radiations, the diversification of a single ancestor into a number of species that inhabit different environments and differ in\nthe traits that allow them to exploit those environments. The factors that drive evolutionary radiations have been studied for decades in charismatic organisms such as birds or lizards, but are lacking in lichen-forming fungi, despite recent reports of some lineages showing diversification\npatterns congruent with radiation.Here we propose the <i>Ramalina decipiens</i> group as a model system in which to carry out such studies. This group is currently thought to be comprised of five saxicolous species, all of them endemic to the Macaronesian region (the Azores, Madeira, Selvagens,\nCanary, and Cape Verde islands). Three species are single-island endemics (a rare geographic distribution pattern in lichens), whereas two are widespread and show extreme morphological variation. The latter are suspected to harbor unrecognized species-level lineages.In order to use the <i>Ramalina\ndecipiens</i> group as a model system, it is necessary to resolve the group's phylogeny and to clarify its species boundaries. In this study, we attempt to do so following an integrative taxonomy approach. We constructed a phylogenetic tree based on six molecular markers, four of which are\nnewly developed, and generated competing species hypotheses based on molecular (species discovery strategies based on both single locus and multilocus datasets) and phenotypic data (unsupervised clustering algorithms based on morphology, secondary chemistry, and geographic origin).We found\nthat taxonomic diversity in the <i>Ramalina decipiens</i> group has been highly underestimated in previous studies. In consequence, we describe six new species, most of them single-island endemics, and provide a key to the group. Phylogenetic relationships among species have been reconstructed\nwith almost full support which, coupled with the endemic character of the group, makes it an excellent system for the study of island radiations in lichen-forming fungi.","PeriodicalId":20014,"journal":{"name":"Persoonia","volume":"17 1","pages":""},"PeriodicalIF":9.5000,"publicationDate":"2024-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Endless forms most frustrating: disentangling species boundaries in the Ramalina decipiens group (Lecanoromycetes, Ascomycota), with the description of six new species and a key to the group\",\"authors\":\"M. Blázquez, I. Pérez-Vargas, I. Garrido-Benavent, M. Villar-dePablo, Y. Turégano, C. Frías-López, A. Sánchez-Gracia, A. de los Ríos, F. Gasulla, S. Pérez-Ortega\",\"doi\":\"10.3767/persoonia.2024.52.03\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Oceanic islands have been recognized as natural laboratories in which to study a great variety of evolutionary processes. One such process is evolutionary radiations, the diversification of a single ancestor into a number of species that inhabit different environments and differ in\\nthe traits that allow them to exploit those environments. The factors that drive evolutionary radiations have been studied for decades in charismatic organisms such as birds or lizards, but are lacking in lichen-forming fungi, despite recent reports of some lineages showing diversification\\npatterns congruent with radiation.Here we propose the <i>Ramalina decipiens</i> group as a model system in which to carry out such studies. This group is currently thought to be comprised of five saxicolous species, all of them endemic to the Macaronesian region (the Azores, Madeira, Selvagens,\\nCanary, and Cape Verde islands). Three species are single-island endemics (a rare geographic distribution pattern in lichens), whereas two are widespread and show extreme morphological variation. The latter are suspected to harbor unrecognized species-level lineages.In order to use the <i>Ramalina\\ndecipiens</i> group as a model system, it is necessary to resolve the group's phylogeny and to clarify its species boundaries. In this study, we attempt to do so following an integrative taxonomy approach. We constructed a phylogenetic tree based on six molecular markers, four of which are\\nnewly developed, and generated competing species hypotheses based on molecular (species discovery strategies based on both single locus and multilocus datasets) and phenotypic data (unsupervised clustering algorithms based on morphology, secondary chemistry, and geographic origin).We found\\nthat taxonomic diversity in the <i>Ramalina decipiens</i> group has been highly underestimated in previous studies. In consequence, we describe six new species, most of them single-island endemics, and provide a key to the group. Phylogenetic relationships among species have been reconstructed\\nwith almost full support which, coupled with the endemic character of the group, makes it an excellent system for the study of island radiations in lichen-forming fungi.\",\"PeriodicalId\":20014,\"journal\":{\"name\":\"Persoonia\",\"volume\":\"17 1\",\"pages\":\"\"},\"PeriodicalIF\":9.5000,\"publicationDate\":\"2024-06-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Persoonia\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.3767/persoonia.2024.52.03\",\"RegionNum\":1,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MYCOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Persoonia","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.3767/persoonia.2024.52.03","RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MYCOLOGY","Score":null,"Total":0}
Endless forms most frustrating: disentangling species boundaries in the Ramalina decipiens group (Lecanoromycetes, Ascomycota), with the description of six new species and a key to the group
Oceanic islands have been recognized as natural laboratories in which to study a great variety of evolutionary processes. One such process is evolutionary radiations, the diversification of a single ancestor into a number of species that inhabit different environments and differ in
the traits that allow them to exploit those environments. The factors that drive evolutionary radiations have been studied for decades in charismatic organisms such as birds or lizards, but are lacking in lichen-forming fungi, despite recent reports of some lineages showing diversification
patterns congruent with radiation.Here we propose the Ramalina decipiens group as a model system in which to carry out such studies. This group is currently thought to be comprised of five saxicolous species, all of them endemic to the Macaronesian region (the Azores, Madeira, Selvagens,
Canary, and Cape Verde islands). Three species are single-island endemics (a rare geographic distribution pattern in lichens), whereas two are widespread and show extreme morphological variation. The latter are suspected to harbor unrecognized species-level lineages.In order to use the Ramalina
decipiens group as a model system, it is necessary to resolve the group's phylogeny and to clarify its species boundaries. In this study, we attempt to do so following an integrative taxonomy approach. We constructed a phylogenetic tree based on six molecular markers, four of which are
newly developed, and generated competing species hypotheses based on molecular (species discovery strategies based on both single locus and multilocus datasets) and phenotypic data (unsupervised clustering algorithms based on morphology, secondary chemistry, and geographic origin).We found
that taxonomic diversity in the Ramalina decipiens group has been highly underestimated in previous studies. In consequence, we describe six new species, most of them single-island endemics, and provide a key to the group. Phylogenetic relationships among species have been reconstructed
with almost full support which, coupled with the endemic character of the group, makes it an excellent system for the study of island radiations in lichen-forming fungi.
期刊介绍:
Persoonia aspires to publish papers focusing on the molecular systematics and evolution of fungi. Additionally, it seeks to advance fungal taxonomy by employing a polythetic approach to elucidate the genuine phylogeny and relationships within the kingdom Fungi. The journal is dedicated to disseminating high-quality papers that unravel both known and novel fungal taxa at the DNA level. Moreover, it endeavors to provide fresh insights into evolutionary processes and relationships. The scope of papers considered encompasses research articles, along with topical and book reviews.