The International Compositae Alliance最新文献

The lure and intrigue of Yunquea tenzii Skottsb. (Cardueae: Centaureinae) 云雀的诡计和诡计。(Cardueae: Centaureinae)

The International Compositae Alliance Pub Date : 2023-09-01 DOI: 10.53875/capitulum.03.1.03

Tod F. Stuessy

{"title":"The lure and intrigue of Yunquea tenzii Skottsb. (Cardueae: Centaureinae)","authors":"Tod F. Stuessy","doi":"10.53875/capitulum.03.1.03","DOIUrl":"https://doi.org/10.53875/capitulum.03.1.03","url":null,"abstract":"We discuss the history of the monospecific genus Yunquea , which is endemic to the highly inaccessible peak El Yunque on Robinson Crusoe Island, Juan Fernández Archipelago. The allure of the genus rests largely on the difficulty of reaching the one known population; we trace the history of the few persons who succeeded in climbing to the summit where the genus occurs. The genus remains of interest to botanists because of the lack of flowering material, having been described only from leaves! During the near century since its description, Yunquea tenzii remains a mysterious species. Molecular phylogenetic studies identify the Juan Fernández endemic Centaurodendron and the continental genus Plectocephalus as closest relatives. However, resolution of relationships among the four genera has not been achieved, leaving biogeographic relationships unknown. Whether Yunquea tenzii evolved anagenetically from continental colonists or cladogenetically from a common ancestor with Centaurodendron remains a mystery. Viable seeds have been collected from the natural population, suggesting sporadic sexual reproduction, but lack of mature floral tissue precludes insights into the floral evolution and reproductive biology of Yunquea .","PeriodicalId":332884,"journal":{"name":"The International Compositae Alliance","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129102635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genomes & islands & evolution: Oh my! 基因组、岛屿和进化:天哪!

The International Compositae Alliance Pub Date : 2023-09-01 DOI: 10.53875/capitulum.03.1.04

M. R. Bellinger

{"title":"Genomes & islands & evolution: Oh my!","authors":"M. R. Bellinger","doi":"10.53875/capitulum.03.1.04","DOIUrl":"https://doi.org/10.53875/capitulum.03.1.04","url":null,"abstract":"A central question in evolutionary biology is how lineages quickly diversify to occupy different ecological niches, along with determining genomic factors that facilitate evolutionary change. Isolated, oceanic archipelagos are famous for adaptive radiations characterized by endemic, species-rich clades with substantial ecological variation, yet genome resources key to determining eco-evo processes are generally lacking. Here I present a comparison of the number of genome reference assemblies available (as of May 31, 2023) for three major eukaryotic lineages, briefly describe genome sequencing and benchmarking strategies, and highlight as a case study a genome assembly project for Bidens hawaiensis (Koʻokoʻolau, Asteraceae or Compositae; Coreopsidae), a member of a hexaploid Hawaiian plant adaptive radiation. The total number of plant genome references (1,394) was found to substantially lag the total number of genome references for animal (6,003) and fungi (4,400). Improvements to the quality of de novo assembled genomes are fueled by second-and third-generation long-read sequencing advancements, among other sequencing approaches. In conjunction, strategies to improve genome contiguity include optical maps, Hi-C chromatin capture, or trio binning. Continual improvements to genome sequencing and assembly algorithms have brought within reach telomere-to-telomere genome assemblies, albeit this level of sequencing has to date only been achieved in a few cases. With improvements in sequencing techniques and per-base pair costs that continue to trend downward, the number of high-quality genomes is anticipated to continue to increase, leading to the filling in of taxonomic gaps and sampling of groups of taxa from under sampled geographic areas. Increasing the number of plant genome resources available for the study of island endemism could help to shed light on genome-phenome relationships and genome characteristics that have produced the stunning biological diversity that we now observe across the globe.","PeriodicalId":332884,"journal":{"name":"The International Compositae Alliance","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132061645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hesperomannia A. Gray (Vernonieae): Extreme rarity and conservation status of an endemic Hawaiian genus 灰狐猴属(狐猴科):夏威夷特有属的极度稀有和保护状况

The International Compositae Alliance Pub Date : 2023-09-01 DOI: 10.53875/capitulum.03.1.02

Susan Ching Harbin

引用次数: 0

Napoleón’s exile on St. Helena: Everlasting love, and Australian paper daisies Napoleón在圣赫勒拿岛的流放:永恒的爱，和澳大利亚纸雏菊

The International Compositae Alliance Pub Date : 2023-09-01 DOI: 10.53875/capitulum.03.1.05

T. L. Collins, A. Schmidt‐Lebuhn, J. Bruhl, I. Telford, Rose L. Andrew

引用次数: 0

Beyond the comfort zone: Lagenophora Cass. (Astereae) in the Malvinas/Falkland Archipelago 在舒适区之外:紫菜。(菊科)在马尔维纳斯群岛/福克兰群岛

The International Compositae Alliance Pub Date : 2023-09-01 DOI: 10.53875/capitulum.03.1.06

Gabriela Sancho, Vanesa Lencinas, Martín Ramírez

引用次数: 0

Invasive Senecio madagascariensis Poir. and the Senecio pinnatifolius A.Rich. complex (Senecioneae): Evolutionary relationships and their implications for biological control research 入侵的马达加斯加小蠹。和海神。a。里奇。复合体(飞蛾科):进化关系及其对生物防治研究的意义

The International Compositae Alliance Pub Date : 2022-08-30 DOI: 10.53875/capitulum.02.1.02

A. Schmidt‐Lebuhn, D. Egli, Ben Gooden

引用次数: 2

The Compositae collection of LP Herbarium: past and present LP植物标本室的合成科收藏:过去与现在

The International Compositae Alliance Pub Date : 2022-08-30 DOI: 10.53875/capitulum.02.1.05

G. Sancho, L. Iharlegui

引用次数: 0

The people you kill are doing quite well: The rediscovery of an “extinct” species described from the outskirts of Madrid (Spain), Carduncellus matritensis Pau (Cardueae) 你杀死的人做得很好:重新发现了一种“灭绝”的物种，来自马德里(西班牙)郊区，Carduncellus matritensis Pau (Cardueae)

The International Compositae Alliance Pub Date : 2022-08-30 DOI: 10.53875/capitulum.02.1.04

Enrique Luengo, J. M. Martínez Labarga, Rubén de Pablo, Alfonso Susana, R. Vilatersana

引用次数: 2

Jorge Víctor Crisci: Latin American champion of synantherology, phenetics, cladistics and biogeography Jorge Víctor Crisci:拉丁美洲语词学、物候学、分类学和生物地理学的冠军

The International Compositae Alliance Pub Date : 2022-08-30 DOI: 10.53875/capitulum.02.1.01

M. Bonifacino

引用次数: 0

Phylogeny of marigolds (Tagetes L., Tageteae) based on ITS sequences 基于ITS序列的万寿菊(Tagetes L.， Tageteae)系统发育

The International Compositae Alliance Pub Date : 2022-08-30 DOI: 10.53875/capitulum.02.1.03

Oscar Hinojosa-Espinosa, D. J. Schiavinato

引用次数: 1