A new species of Casearia Jacq. (Salicaceae) from Central Panama and insights into its phylogenetic position within the genus DOI Creative Commons
Astrid de Mestier, Ernesto Campos-Pineda, Marco Cedeño‐Fonseca

и другие.

PhytoKeys, Год журнала: 2023, Номер 236, С. 97 - 112

Опубликована: Дек. 6, 2023

We describe here a new species of Casearia from Panama based on both morphological and molecular data. Caseariaisthmicasp. nov. is restricted to the mid-elevation cloud forests Central presents similarities with two more widespread species, C.sanchezii high elevation areas El Salvador Mexico C.tremula Caribbean, America, Northern South America. Caseariaisthmica differs in presenting pedunculated congested inflorescences up 20 flowers, as well flowers 12 stamens pubescent style. Phylogenetic analysis selected plastid (petD, trnK-matK, rpl16 rps4-trnLF) nuclear (GBSSI ITS) markers shows that belongs subclade B3 Casearia, lineage encompasses Caribbean. Results were congruent allowed broader understanding this taxon, especially regarding its relationships other Casearia.

Язык: Английский

Geographic And Taxonomic Occurrence R‐based Scrubbing (gatoRs): An R package and workflow for processing biodiversity data DOI Creative Commons
Natalie N. Patten, Michelle L. Gaynor, Douglas E. Soltis

и другие.

Applications in Plant Sciences, Год журнала: 2024, Номер 12(2)

Опубликована: Март 1, 2024

Abstract Premise Digitized biodiversity data offer extensive information; however, obtaining and processing can be daunting. Complexities arise during cleaning, such as identifying removing problematic records. To address these issues, we created the R package Geographic And Taxonomic Occurrence R‐based Scrubbing (gatoRs). Methods Results The gatoRs workflow includes functions that streamline downloading records from Global Biodiversity Information Facility (GBIF) Integrated Biocollections (iDigBio). We also to clean downloaded specimen Unlike previous packages, accounts for differences in download structure between GBIF iDigBio allows user control via interactive cleaning steps. Conclusions Our pipeline enables scientific community process efficiently is accessible coding novice. anticipate will useful both established beginning users. Furthermore, expect our facilitate introduction of biodiversity‐related concepts into classroom use herbarium specimens.

Язык: Английский

Процитировано

5

Complete Chloroplast Genome Analysis of Casearia kurzii: Gene Loss at the IR Boundary and Monophyletic Evolution Within Casearia DOI Creative Commons
Kan Yan, Wandi Li, Chao Sun

и другие.

Plants, Год журнала: 2025, Номер 14(9), С. 1356 - 1356

Опубликована: Апрель 30, 2025

Genomic analysis is crucial for understanding the evolutionary history, phylogenetic relationships, and effective conservation of plant species. Casearia kurzii an important medicinal genus Casearia, but its complete chloroplast genome has not previously been reported, limiting genetic studies efforts. In this study, we assembled annotated C. using Illumina sequencing technology conducted a comparative genomics with 14 closely related species to clarify position within Casearia. The was 157,998 bp, showing typical quadripartite structure. Key findings included: (1) loss rpl22 gene at IR boundary; (2) identification 60 simple sequence repeats (SSRs) (3) discovery five candidate molecular markers species-level identification. Phylogenetic revealed that formed strongly supported monophyletic clade (100% bootstrap support) velutina, decandra, glomerata, originated approximately 15.8 million years ago. This study provides tools accurate species, laying foundation exploring adaptive evolution advancing research.

Язык: Английский

Процитировано

0

Nested singletons in molecular trees: Utility of adding morphological and geographical data from digitized herbarium specimens to test taxon concepts at species level in the case of Casearia (Salicaceae) DOI Creative Commons
Astrid de Mestier, Robert Lücking, Jorge Gutiérrez

и другие.

Ecology and Evolution, Год журнала: 2023, Номер 13(1)

Опубликована: Янв. 1, 2023

Abstract Using the genus Casearia , we assessed status of nested singletons: individual specimens corresponding to accepted species but in molecular trees appearing within clades closely related species. Normally, such cases would be left undecided, while on other hand, timely taxonomic decisions are required. We argue that morphological, chorological, and ecological data can informative illuminate patterns speciation. Their use provide a first step testing taxon concepts at level. focused five singletons . employed PCA cluster analysis assess phenotypic differentiation. geocoordinates, calculated niche space differentiation based 19 bioclim variables, by means equivalency similarity tests generated dot maps. found were morphologically distinctive two ( selloana C. manausensis ), relatively zizyphoides mariquitensis partially overlapping last case grandiflora ). For was broadly overlapping, it one narrowly no observed. Niche overlap, showed patterns. Given these data, interpret as presumably well‐distinguished taxa, their narrow distribution ranges suggesting recently emerging lineages. The three not clearcut. Morphological suggest particularly conspecific with arborea differences intriguing. Our approach reject notion potential synonymy phylogenetic placement for least cases. also shows complete lack which support synonymy.

Язык: Английский

Процитировано

6

Patterns in the genetic structure of 49 lowland rain forest tree species co‐distributed on opposite sides of the northern Andes DOI Creative Commons
Jordan B. Bemmels, Álvaro J. Pérez, Renato Valencia

и другие.

Biotropica, Год журнала: 2024, Номер 56(2)

Опубликована: Фев. 22, 2024

Abstract The Andes are a major dispersal barrier for lowland rain forest plants and animals, yet hundreds of tree species distributed on both sides the northern Andes, raising questions about how influenced their biogeographic histories population genetic structure. To explore these questions, we generated standardized datasets thousands SNPs from paired populations 49 co‐distributed in communities located Panama Amazonian Ecuador calculated diversity ( π ) absolute divergence d XY within between populations, respectively. We predicted (1) higher ancestral source region (east or west Andes) each taxon (2) correlation statistics with attributes, including elevational range life‐history strategy. found that was putative regions, possibly reflecting founder events during colonization. little support relationship attributes except limits exhibited , implying older times. One possible explanation this pattern is through mountain passes declined importance relative to via alternative routes as experienced uplift. no difference mean Central America Amazon. Overall, our results suggest across has left enduring signatures structure widespread trees. outline additional hypotheses be tested species‐specific case studies.

Язык: Английский

Процитировано

2

Extended phylogenetic analysis and morphology of the Iresine cassiniiformis – I. hartmanii alliance (Amaranthaceae) reveals two further geographically distinct species DOI Creative Commons
Thomas Borsch, Hilda Flores‐Olvera

Botanical Sciences, Год журнала: 2024, Номер 103(1)

Опубликована: Дек. 19, 2024

Background: Shrubs recognized as I. hartmanii were known from the northern Mexican deserts, whereas cassiniiformis is considered to occur throughout highlands. Morphologically similar individuals reported under both names also south beyond Isthmus of Tehuantepec Guatemala. Question: Are and distinct species, or do they represent widespread taxa exhibiting clinal variation due adaptation along a gradient spanning desert evergreen tropical forest? Taxon: Amaranthaceae, Iresine. Study site: Mexico Central America. Method: Field herbarium work, molecular phylogenetics, morphology, palynology, distribution mapping. Results: Plastid nuclear phylogenetic trees suggest complex speciation scenario in Iresine, revealing new lineages mountains Chiapas, Oaxaca Guatemala that differ by morphological characters. Iresine appears monophyletic occurs Trans-Mexican Volcanic Belt comprises core clade confined deserts. Specimens morphologically intermediate cassiniiformis, part species nrITS, directly zone, either representing ancestral types introgression cassiniiformis. Conclusion: Our results underscore importance an integrative taxonomy approach including phylogenetics morphology with dense sampling putative geographical range order arrive at explicit hypotheses on limits. Here this supports description naming two species.

Язык: Английский

Процитировано

0

A new species of Casearia Jacq. (Salicaceae) from Central Panama and insights into its phylogenetic position within the genus DOI Creative Commons
Astrid de Mestier, Ernesto Campos-Pineda, Marco Cedeño‐Fonseca

и другие.

PhytoKeys, Год журнала: 2023, Номер 236, С. 97 - 112

Опубликована: Дек. 6, 2023

We describe here a new species of Casearia from Panama based on both morphological and molecular data. Caseariaisthmicasp. nov. is restricted to the mid-elevation cloud forests Central presents similarities with two more widespread species, C.sanchezii high elevation areas El Salvador Mexico C.tremula Caribbean, America, Northern South America. Caseariaisthmica differs in presenting pedunculated congested inflorescences up 20 flowers, as well flowers 12 stamens pubescent style. Phylogenetic analysis selected plastid (petD, trnK-matK, rpl16 rps4-trnLF) nuclear (GBSSI ITS) markers shows that belongs subclade B3 Casearia, lineage encompasses Caribbean. Results were congruent allowed broader understanding this taxon, especially regarding its relationships other Casearia.

Язык: Английский

Процитировано

0