{"title":"死胡同的新开端:多倍体、-SSE 模型和死胡同假说。","authors":"Eric R Hagen, Jeremy M Beaulieu","doi":"10.1093/aob/mcae143","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Since the mid-twentieth century, it has been argued by some that the transition from diploidy to polyploidy is an \"evolutionary dead end\" in plants. While this point has been debated ever since, multiple definitions of \"dead end\" have been used in the polyploidy literature without sufficient differentiation between alternative uses.</p><p><strong>Scope: </strong>Here, we focus on the two most common conceptions of the dead-end hypothesis currently discussed: the \"lowering diversification\" hypothesis and the \"rarely successful\" hypothesis. We discuss the evidence for both hypotheses, and we employ a recently developed method of inferring tip diversification rates to demonstrate tests for the effect of ploidy on diversification in Solanaceae.</p><p><strong>Conclusions: </strong>We find that diversification rates in the family are not strongly correlated with ploidy or with the closely related trait of breeding system. We also outline recent work in the field that moves beyond the relatively simple question of whether polyploidy increases, decreases, or does not significantly affect diversification rates in plants.</p>","PeriodicalId":8023,"journal":{"name":"Annals of botany","volume":" ","pages":""},"PeriodicalIF":3.6000,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"New beginnings for dead ends: polyploidy, -SSE models, and the dead-end hypothesis.\",\"authors\":\"Eric R Hagen, Jeremy M Beaulieu\",\"doi\":\"10.1093/aob/mcae143\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Background: </strong>Since the mid-twentieth century, it has been argued by some that the transition from diploidy to polyploidy is an \\\"evolutionary dead end\\\" in plants. While this point has been debated ever since, multiple definitions of \\\"dead end\\\" have been used in the polyploidy literature without sufficient differentiation between alternative uses.</p><p><strong>Scope: </strong>Here, we focus on the two most common conceptions of the dead-end hypothesis currently discussed: the \\\"lowering diversification\\\" hypothesis and the \\\"rarely successful\\\" hypothesis. We discuss the evidence for both hypotheses, and we employ a recently developed method of inferring tip diversification rates to demonstrate tests for the effect of ploidy on diversification in Solanaceae.</p><p><strong>Conclusions: </strong>We find that diversification rates in the family are not strongly correlated with ploidy or with the closely related trait of breeding system. We also outline recent work in the field that moves beyond the relatively simple question of whether polyploidy increases, decreases, or does not significantly affect diversification rates in plants.</p>\",\"PeriodicalId\":8023,\"journal\":{\"name\":\"Annals of botany\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2024-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Annals of botany\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1093/aob/mcae143\",\"RegionNum\":2,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of botany","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1093/aob/mcae143","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PLANT SCIENCES","Score":null,"Total":0}
New beginnings for dead ends: polyploidy, -SSE models, and the dead-end hypothesis.
Background: Since the mid-twentieth century, it has been argued by some that the transition from diploidy to polyploidy is an "evolutionary dead end" in plants. While this point has been debated ever since, multiple definitions of "dead end" have been used in the polyploidy literature without sufficient differentiation between alternative uses.
Scope: Here, we focus on the two most common conceptions of the dead-end hypothesis currently discussed: the "lowering diversification" hypothesis and the "rarely successful" hypothesis. We discuss the evidence for both hypotheses, and we employ a recently developed method of inferring tip diversification rates to demonstrate tests for the effect of ploidy on diversification in Solanaceae.
Conclusions: We find that diversification rates in the family are not strongly correlated with ploidy or with the closely related trait of breeding system. We also outline recent work in the field that moves beyond the relatively simple question of whether polyploidy increases, decreases, or does not significantly affect diversification rates in plants.
期刊介绍:
Annals of Botany is an international plant science journal publishing novel and rigorous research in all areas of plant science. It is published monthly in both electronic and printed forms with at least two extra issues each year that focus on a particular theme in plant biology. The Journal is managed by the Annals of Botany Company, a not-for-profit educational charity established to promote plant science worldwide.
The Journal publishes original research papers, invited and submitted review articles, ''Research in Context'' expanding on original work, ''Botanical Briefings'' as short overviews of important topics, and ''Viewpoints'' giving opinions. All papers in each issue are summarized briefly in Content Snapshots , there are topical news items in the Plant Cuttings section and Book Reviews . A rigorous review process ensures that readers are exposed to genuine and novel advances across a wide spectrum of botanical knowledge. All papers aim to advance knowledge and make a difference to our understanding of plant science.