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  • Evolution  (3)
  • Course of study: MSc Biological Oceanography
  • geoethics
  • 2020-2024  (3)
  • 2020-2023  (1)
  • 2010-2014
  • 2022  (4)
  • 2022  (4)
Document type
Keywords
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Years
  • 2020-2024  (3)
  • 2020-2023  (1)
  • 2010-2014
Year
  • 1
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    Disentangling a complex genus: systematics, biogeography and bioactivity of the genus Phyllanthus L. and related genera of tribe Phyllantheae (Phyllanthaceae) (2022)
    Details
    Publication Date: 2024-01-12
    Description: The largest genus within the Phyllanthaceae family is a group called Phyllanthus L. Recent studies have shown, that Phyllanthus is paraphyletic with the genera Glochidion, Breynia and Synostemon nested within it. In this thesis, I study the evolution and systematics of Phyllanthus and how to solve the apparent paraphyly. First we explore past morphological subgroups to come to a subdivision, which was tested using molecular phylogenetics. Several species of Phyllanthus are also used in traditional medicine and by utilizing the living collections of the Hortus botanicus Leiden, we tested for antibacterial and antifungal bioactivity. The phylogeny resulting from this study is used to study the historical biogeography and diversification of the tribe and to propose a new classification where Phyllanthus is separated into several smaller genera.
    Keywords: Taxonomy ; Systematics ; Botany ; Evolution ; Biogeography ; Phyllanthus ; Phyllanthaceae
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/doctoralThesis
    Format: application/pdf
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  • 2
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    Eight new Halophytophthora species from marine and brackish-water ecosystems in Portugal and an updated phylogeny for the genus (2022)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 48, pp. 54-90
    Details
    Publication Date: 2024-03-24
    Description: During an oomycete survey in December 2015, 10 previously unknown Halophytophthora taxa were isolated from marine and brackish water of tidal ponds and channels in saltmarshes, lagoon ecosystems and river estuaries at seven sites along the Algarve coast in the South of Portugal. Phylogenetic analyses of LSU and ITS datasets, comprising all described Halophytophthora species, the 10 new Halophytophthora taxa and all relevant and distinctive sequences available from GenBank, provided an updated phylogeny of the genus Halophytophthora s.str. showing for the first time a structure of 10 clades designated as Clades 1–10. Nine of the 10 new Halophytophthora taxa resided in Clade 6 together with H. polymorphica and H. vesicula. Based on differences in morphology and temperature-growth relations and a multigene (LSU, ITS, Btub, hsp90, rpl10, tigA, cox1, nadh1, rps10) phylogeny, eight new Halophytophthora taxa from Portugal are described here as H. brevisporangia, H. celeris, H. frigida, H. lateralis, H. lusitanica, H. macrosporangia, H. sinuata and H. thermoambigua. Three species, H. frigida, H. macrosporangia and H. sinuata, have a homothallic breeding system while the remaining five species are sterile. Pathogenicity and litter decomposition tests are underway to clarify their pathological and ecological role in the marine and brackish-water ecosystems. More oomycete surveys in yet undersurveyed regions of the world and population genetic or phylogenomic analyses of global populations are needed to clarify the origin of the new Halophytophthora species.
    Keywords: Ecology ; Evolution ; Behavior and Systematics ; breeding system ; ecological role ; evolution ; lifestyle ; oomycetes ; Peronosporaceae ; Phytophthora
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
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    Geoetica: un'etica per la relazione tra gli esseri umani e la Terra (2022)
    Fondazione Umberto Veronesi
    Details
    Publication Date: 2022-02-07
    Description: Gli esseri umani vivono in una società globalizzata, smaterializzata nella sua spazialità e temporalità, tecnologizzata, sempre più omogeneizzata nelle forme culturali e nelle strutture economiche, con accresciute disuguaglianze nel riconoscimento dei diritti umani e nelle possibilità di autodeterminazione e di accesso alle risorse naturali. La pandemia da SARS-CoV-2 ha evidenziato criticità e potenzialità della società globalizzata. I cambiamenti ambientali antropogenici, che modificano le caratteristiche fisico-chimico-biologiche del sistema Terra, costituiscono una minaccia analoga se non più grave per l'abitabilità del pianeta da parte dell'umanità e di molte altre specie viventi. Affrontare urgentemente tali cambiamenti richiede una forte cooperazione internazionale tra gli Stati. Allo stesso tempo è necessario che le comunità umane condividano principi e valori su cui fondare nuove forme di relazione tra esseri umani e natura. In tale prospettiva, la geoetica si propone come etica globale di un mondo complesso, fondata sui principi di dignità, libertà e responsabilità. Human beings live in a globalized society, dematerialized in its spatiality and temporality, technologized, increasingly homogenized in cultural forms and economic structures, with increased inequalities in the recognition of human rights and in the possibilities of self-determination and access to natural resources. The SARS-CoV-2 pandemic has highlighted the criticality and potential of the globalized society. Anthropogenic environmental changes, which modify the physical-chemical-biological characteristics of the Earth system, pose a similar if not more serious threat to the habitability of the planet by humanity and many other living species. Addressing such changes urgently requires strong international cooperation among States. At the same time, it needs that human communities share principles and values on which to base new forms of relationship between human beings and nature. In this perspective, geoethics is proposed as global ethics for a complex world, founded on the principles of dignity, freedom and responsibility.
    Description: Published
    Description: 42-53
    Description: 1TM. Formazione
    Description: 2TM. Divulgazione Scientifica
    Description: 3TM. Comunicazione
    Description: N/A or not JCR
    Keywords: geoetica ; pandemia SARS-CoV-2 ; riscaldamento globale ; cambiamenti antropogenici ; società globalizzata ; sviluppo sostenibile ; geoethics ; SARS-CoV-2 pandemic ; global warming ; anthropogenic changes ; globalized society ; sustainable development ; 05.03. Educational, History of Science, Public Issues ; 05.09. Miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Diversity of Sporocadaceae (pestalotioid fungi) from Rosa in China (2022)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 49 no. 1, pp. 201-260
    Details
    Publication Date: 2024-03-20
    Description: Rosa (Rosaceae) is an important ornamental and medicinal plant genus worldwide, with several species being cultivated in China. Members of Sporocadaceae (pestalotioid fungi) are globally distributed and include endophytes, saprobes but also plant pathogens, infecting a broad range of host plants on which they can cause important plant diseases. Although several Sporocadaceae species were recorded to inhabit Rosa spp., the taxa occurring on Rosa remain largely unresolved. In this study, a total of 295 diseased samples were collected from branches, fruits, leaves and spines of eight Rosa species (R. chinensis, R. helenae, R. laevigata, R. multiflora, R. omeiensis, R. rugosa, R. spinosissima and R. xanthina) in Gansu, Henan, Hunan, Qinghai, Shaanxi Provinces and the Ningxia Autonomous Region of China. Subsequently 126 strains were obtained and identified based on comparisons of DNA sequence data. Based on these results 15 species residing in six genera of Sporocadaceae were delineated, including four known species (Pestalotiopsis chamaeropis, Pes. rhodomyrtus, Sporocadus sorbi and Spo. trimorphus) and 11 new species described here as Monochaetia rosarum, Neopestalotiopsis concentrica, N. subepidermalis, Pestalotiopsis tumida, Seimatosporium centrale, Seim. gracile, Seim. nonappendiculatum, Seim. parvum, Seiridium rosae, Sporocadus brevis, and Spo. spiniger. This study also represents the first report of Pes. chamaeropis, Pes. rhodomyrtus and Spo. sorbi on Rosa. The overall data revealed that Pestalotiopsis was the most prevalent genus, followed by Seimatosporium, while Pes. chamaeropis and Pes. rhodomyrtus were the two most prevalent species. Analysis of Sporocadaceae abundance on Rosa species and plant organs revealed that spines of R. chinensis had the highest species diversity.
    Keywords: Ecology ; Evolution ; Behavior and Systematics ; Amphisphaeriales ; Ascomycota ; new taxa ; phylogeny ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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