Agostina B. Sassone

Agostina B. Sassone
Leibniz Institute of Plant Genetics and Crop Plant Research · Working Group Experimental Taxonomy

Doctor in Biology
Postdoc researcher

About

31
Publications
14,080
Reads
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149
Citations
Citations since 2016
22 Research Items
138 Citations
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2016201720182019202020212022010203040
2016201720182019202020212022010203040
Introduction
Dr. Agostina B. Sassone has currently a Georg Forster Research Fellowship (Alexander von Humboldt Foundation). She is interested in elucidating the evolutionary history among South American garlics (AMARYLLIDACEAE-ALLIOIDEAE). https://agostinasassone.wixsite.com/mysite
Additional affiliations
June 2017 - November 2017
August 2016 - March 2017
CAECE University
Position
  • Teacher in charge of assignments.
Description
  • Subject: Vascular Plant Biology.
May 2016 - August 2016
Freie Universität Berlin
Position
  • Fellow
Education
May 2012 - March 2017
Universidad de Buenos Aires
Field of study
  • Biology

Publications

Publications (31)
Article
Atacamallium, a new genus in Amaryllidaceae‐Allioideae‐Leucocoryneae, is introduced with a description of its type Atacamallium minutiflorum, endemic to the coastal Atacama Desert of northern Chile. Phylogenetic analyses of DNA sequences, along with morphological characters and its distribution pattern, support the new genus and place it as a putat...
Article
Full-text available
The cultivation and domestication of plants are human-driven processes that change the biology and attributes of a plant. Ipheion uniflorum is a bulbous geophyte known as Spring Starflower whose cultivation dates back to the first half of the 19th century. At least seven cultivars have been developed from natural stands. However, comparative analys...
Poster
Full-text available
Elgénero Zephyranthes Herb. (Amaryllidaceae) cuenta con aproximadamente 170 especies, actualmente circunscriptas a 7 subgéneros. Dentro de la flora nativa en el área en cuestión nos ocuparemos de cuatro especies, tres del subg. Zephyranthes: Z.minima Herb., Z.tubispatha (L'Hér.) Herb. y Z. barrosiana (Hunz.&DiFulvio) S.C.Arroyo, y una del subg. Hab...
Poster
Full-text available
Zephyranthes bifida (Herb.) Nic. García & Meerow (Amaryllidaceae), es una especie con inflorescencias multifloras, con flores vistosas, infundibuliformes, generalmente rosadas o rojas. Su distribución abarca desde el noreste de Argentina, zonas limítrofes de Paraguay, Uruguay y el sur de Brasil. Recientemente ha sido reubicada en el género Zephyran...
Article
Full-text available
Speciation proceeds through mechanisms that promote reproductive isolation and shape the extent of genetic variation in natural populations, and thus, its study is essential to understand the evolutionary processes leading to increased biodiversity. Chromosomal rearrangements are known to facilitate reproductive isolation by hybrid sterility and fa...
Article
Full-text available
The establishment of species boundaries has been a difficult task for biologists since the beginning of classifications. Within South American Allioideae (= Alliaceae), the delimitation of genera and species has long been a major challenge. Consequently, species-level nomenclature in these groups has been difficult to elucidate. Ipheion and Tristag...
Book
Full-text available
The urge to organise the world around us is an essential part of human nature. Naming and categorising enable us to store and access information ef ciently. The need to name and categorise extends to the natural world and, in particular, to living organisms. The science underpinning this area of knowledge is called Taxonomy, and is as old as humani...
Article
Full-text available
Rúgolo de Agrasar recognized two varieties of Deyeuxia velutina (D. velutina var. velutina and D. velutina var. nardifolia) based on leaf sheath indumentum, lemma length, and leaf blade direction. However, taxonomic delimitation has been difficult due to occasional overlapping characters. To assess the infraspecific delimitation of D. velutina, we...
Article
Full-text available
Within grasses, the tribe Stipeae is highly specialized by the presence of only one fruit per spikelet and characterized by the diversity in the ornamentation of the floret. Our aim was to analyze similarities and differences based on multi-and univariate analyses among closely related species in American Stipeae: Jarava species with plumose-like a...
Article
Full-text available
Botanists, a section of the broad universe of researchers in Biology, are intensive users of herbaria. Presumably, all botanists use herbaria, with greater or lesser frequency and intensity, in the development of their research. In this article, we will try to prove this statement. For this purpose, an institutional history of Botany and herbaria i...
Article
Full-text available
A new species from the Andean region of northwestern Argentina is described and illustrated: Sisyrinchium humahuacense. This species can be distinguish from its closest related species by three main characters: the presence of a conspicuous horizontal rhizome, the colour of the flowers and the presence of rudimentary leaves not splitting in fibers....
Article
Full-text available
The Global Strategy for Plant Conservation (GSPC) was established by the Conference of Parties in 2002 to decrease the loss of plant diversity, reduce poverty and contribute to sustainable development. To achieve this overarching goal, the GSPC has established a series of targets, one of which is to ensure that plant diversity is well understood, s...
Article
Full-text available
Tristagma Poepp. (Amaryllidaceae, Allioideae) is morphologically characterized by the unique combination of a spathe composed by two bracts connate at the base, floral tube always covering the ovary and staminal filaments disposed in two series. Genus and species circumscriptions within Tristagma have been a source of confusion because of the diffi...
Article
At present the subfamily Allioideae is included within the Amaryllidaceae, which is an economic important bulb crop subfamily that includes onion, garlic, and ornamental species worldwide. The Allioideae includes four tribes geographically disjunct namely: Allieae, widespread in the northern hemisphere, tribe Tulbaghieae distributed in South Africa...
Article
Full-text available
As part of a revision of Oxalis for the Flora Argentina, the types of all the relevant names for the country were assessed. Seven names were inadvertently lectotypified before 2001, but require second-step lectotypifications. As a whole, eleven lectotypes (first and second step) are designated here.
Article
Full-text available
The tribe Leucocoryneae is taxonomically and cytogenetically complex, mainly due to its extraordinary morphological and karyological variation. Robertsonian translocations had long been recognized as a central factor contributing to karyotype diversity within the Leucocoryneae, but so far no major tendency prevailing on the observed complexity of k...
Article
Full-text available
The type of the generic name Ipheion Rafinesque is Milla uniflora Graham but the same specific epithet had been used in Triteleia by Lindley a few years earlier for the same species with a different type. Confusion ensued concerning the correct author citation for the species under Ipheion. A taxonomic history of the name Ipheion uniflorum (Graham)...
Thesis
The circumscription of genus Tristagma Poepp. has been controversial since its description, so Tristagma species have been considered under different genera of subfamily Allioideae. The aim of this thesis is to present a multidisciplinary study of Tristagma, in order to define the number of species, contributing to a better knowledge of the subfami...
Article
Full-text available
Tristagma is a South American genus distributed in Argentina and Chile. Species circumscription in Tristagma has been a source of confusion for various reasons; e.g., generic concepts, nomenclatural inconsistencies, and doubtful species. As a first step towards a revision of Tristagma, the nomenclatural history is reviewed. Following an extensive r...
Article
Full-text available
The monotypic genus Latace has been formerly treated under its related genera Leucocoryne or Nothoscordum. The genus Zoellnerallium, on the other hand, was established to include the atypical Nothoscordum andinum (= Ornithogalum andinum) and, later another similar species, namely Nothoscordum serenense, was also placed in this genus. In this contri...
Poster
Full-text available
Oxalis secc. Alpinae incluye aproximadamente 17 especies que se distribuyen a lo largo de la Cordillera de los Andes, desde el sur de Perú hasta el centro de Argentina y Chile. Esta sección constituye un grupo monofilético según datos moleculares y se encuentra en revisión taxonómica. En el presente trabajo se analiza la variación morfológica de fo...
Conference Paper
Full-text available
El género Tristagma se incluye en la familia Amaryllidaceae, subfamilia Allioideae, los tratamientos taxonómicos son parciales y no reflejan con certidumbre cuáles son los límites genéricos, ni el número preciso de las especies que lo conforman. Tristagma posee dos centros de diversidad específica, uno restringido a la región patagónica argentina,...
Article
Full-text available
Based on morphological, anatomical, and phylogenetic studies within subfamily Allioideae, a new circumscription of tribe Leucocoryneae is presented including six American genera: Beauverdia, Ipheion, Leucocoryne, Nothoscordum, Tristagma and Zoellnerallium. A synopsis of tribe Leucocoryneae, comprising its description (as amended), a key to tribes,...
Article
Full-text available
Based on morphological evidence, we resurrect the genus Beauverdia to include species of Ipheion section Hirtellum. All species now included in Beauverdia were also treated as part of Ipheion, Nothoscordum, or Tristagma. As here circumscribed, Beauverdia (Amaryllidaceae, Allioideae, Gilliesieae) is a South American genus that is found in Argentina,...
Article
Full-text available
Ipheion, as recognized by Guaglianone (Darwiniana 17:159–242, 1972), is a small genus of the family Amaryllidaceae, subfamily Allioideae, tribe Gilliesieae endemic to South America. Since 1800, the species of Ipheion were treated under Beauverdia, Brodiaea, Milla, Nothoscordum, Tristagma or Triteleia. Nowadays, some species of Ipheion are treated a...
Thesis
Full-text available
Ipheion es un género que cuenta con 8 especies caracterizadas por inflorescencia uniflora, espata formada por dos brácteas fusionadas (total o parcialmente) y frutos humifusos. La circunscripción de Ipheion es controversial, sus especies fueron consideradas en diversos géneros, dentro de los cuales se encuentran Tristagma y Nothoscordum. El objetiv...

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Projects (2)
Project
The Tribe Leucocoryneae is composed of 6 genera (Beauverdia, Ipheion, Latace, Leucocoryne, Nothoscordum and Tristagma) and it is distributed principally in South America, including several endemic taxa. This project aims to resolve the systematic of tribe Leucocoryneae. We are performing molecular phylogenetic, taxonomic and morphometric studies to elucidate relationships among genera and species, selecting diagnostic characters in order to circumscribe the different taxa included in the tribe.
Project
Mi propósito es promover el trabajo conjunto entre estudiantes que actualmente se encuentran bajo mi dirección o codirección, e investigadores con los que trabajo en colaboración. El presente proyecto propone realizar estudios sistemáticos y filogenéticos en géneros de Monocotiledóneas, en particular de las familias: Amaryllidaceae y Hyacinthaceae (Asparagales), y Cyperaceae y Poaceae (Poales). Los géneros seleccionados en el presente proyecto constituyen endemismos para Argentina y para América austral. Los estudios que proyectamos sobre diversidad genética, morfológica y geográfica se enfocan en la identificación y caracterización de endemismos en regiones geográficas delimitadas con el fin de promover su conservación y uso sostenible. En particular se profundizarán los resultados obtenidos en Poa, un género modelo, donde se estudian las relaciones evolutivas entre las especies, la caracterización morfológica, molecular y ecológica de endemismos, la evolución del sistema reproductivo con énfasis en la aparición de la dioecia, y las interacciones simbióticas con endófitos que generalmente le confieren mayor vigor, resistencia a la herbivoría, o una mayor capacidad para adaptarse a ambientes extremos. Dentro del grupo de las gramíneas se realizarán estudios poblacionales y filogeográficos en Festuca y Jarava. Por otro lado, se inician estudios en una familia de gran interés económico para la alimentación humana, con valor medicinal y como plantas ornamentales; tal es el caso de las Amaryllidaceae. Actualmente dirijo una tesis de doctorado en géneros de Allioideae (la subfamilia del Ajo y la Cebolla): Ipheion, Nothoscordum, Tristagma y Zoellnerallium; y comenzaré los estudios sistemáticos y filogenéticos en particular para Nothoscordum, un complejo género de aproximadamente 80 especies. Se propone un estudio filogenético de un género endémico de la familia Hyacinthaceae, el género Oziroe; y, a través de una estudiante de postdoctorado, se realizan estudios filogenéticos en Bulbostylis (Cyperaceae). Las diversas herramientas moleculares (secuenciación de ADN, AFLP, microsatélites, etc.) aportan nuevos caminos para el estudio de la variabilidad en grupos taxonómicos de niveles jerárquicos altos como a nivel específico y poblacional, permitiendo evaluar la diversidad morfológica y geográfica con una nueva visión taxonómica.