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The hybrid Centaurium erythraea × pulchellum (Gentianaceae), newly recorded in the Netherlands and Belgium Meise Botanic Garden

Filip Verloove, Sipke Gonggrijp, Ward Vercruysse, Ben Zonneveld, Frederik Leliaert
In the summer of 2023, and again in 2024, a large population of an unidentified Centaurium was discovered at a recently excavated site along the River Meuse near Grevenbicht (Koeweide / Trierveld), the Netherlands. In 2024, morphologically identical plants were also found on the Belgian side of the river in Stokkem (Kerkeweerd), and in 2025 between Maasband and Meers, again on Dutch territory. The plants were morphologically highly uniform, ...

A predictive framework for identifying source populations of non-native marine macroalgae: Chondria tumulosa in the Pacific Ocean Meise Botanic Garden

James T. Fumo, Patrick K. Nichols, Taylor Ely, Peter B. Marko, Amy L. Moran, Brian S. Powell, Taylor M. Williams, Randall K. Kosaki, Celia M. Smith, Keolohilani H. Lopes, Jr., et al.
The cryptogenic marine red alga Chondria tumulosa was first observed in 2016 in subtidal habitats at Manawai (Pearl and Hermes Atoll) in the Papahānaumokuākea Marine National Monument (PMNM), Hawai‘i. Without molecular or morphological matches to any known species, it was described in 2020 and declared cryptogenic. This alga has substantially increased in benthic cover and has been discovered on two additional atolls in PMNM: Kuaihelani (Midway) ...

Rhizoclonium volgense sp. nov., a new species of Cladophoraceae (Ulvophyceae, Chlorophyta) from the Volga River Meise Botanic Garden

Vasily S. Vishnyakov, Frederik Leliaert
Unusually large masses of green filamentous algae were recently discovered in the Volga River, European Russia. Macroscopically, their thick, slightly curled, bright-green filaments are distinct from the commonly occurring Cladophora glomerata. Microscopic examination showed that the filaments were entirely unbranched and composed of relatively large cells containing up to 170 nuclei, features characteristic of Chaetomorpha. However, molecular ...

The “Key” to Bringing DNA Collections to the Next Level: A DiSSCo Flanders Working Group Product Research Institute for Agriculture, Fisheries and Food

Emily Veltjen, Pieter Asselman, Wim Baert, Steve Baeyen, Lise Beirinckx, Liselot Breyne, Dimitri Brosens, Tim Claerhout, Sari Cogneau, Karen Cox, et al.
The DiSSCo (Distributed System of Scientific Collections) Flanders consortium, with one of the set goals being "maturing" (i.e., optimizing the management of) and unlocking (i.e., publishing) their DNA collections, identified 1) the need for actively sharing best practices on the management of DNA collections; and 2) a need for guidance on how to bring theory into practice.During the DiSSCo Flanders project, a DNA collection working group was ...

The key to bringing DNA collections to the next level Research Institute for Nature and Forest Research Institute for Agriculture, Fisheries and Food

Emily Veltjen, Pieter Asselman, Wim Baert, Steve Baeyen, Lise Beirinckx, Liselot Breyne, Dimitri Brosens, Tim Claerhout, Sari Cogneau, Karen Cox, et al.
DNA collections are a valuable type of Natural Science collection, enabling the validation of past research, serving as a source for new genomic studies and supporting ex situ conservation. The DiSSCo Flanders DNA collection working group, aiming to advance and "unlock" their DNA collections, identified the need for: 1) actively sharing best practices regarding the management of DNA collections; and 2) providing guidance on how to bring theory ...

Niche conservatism prevails in repeated long-distance colonization of Madagascar mountains by the genus Helichrysum (Compositae) Meise Botanic Garden

Carme Blanco-Gavaldà, Cristina Roquet, Genís Puig-Surroca, Santiago Andrés-Sánchez, Sylvain G. Razafimandimbison, Rokiman Letsara, Nicola G. Bergh, Glynis V. Cron, Lucía D. Moreyra, Juan Antonio Calleja, et al.
Madagascar is a world’s biodiversity hotspot, showing exceptionally high levels of species rich- ness and endemism. Despite the island’s pro- longed geographic isolation (150 to 160 Ma from Africa, 84 to 90 Mya from India), most of its extant endemic plant species are the result of recent long-distance dispersals, mainly from continen- tal Africa. The genus Helichrysum is a relevant study-case to explore the evolutionary and bio- geographic ...

Ulva-microbial interactions linked to the environment : variation and acclimation Ghent University

Luna van der Loos
Zeewieren leven samen in symbiose met talloze micro-organismen, waaronder bacteriën, schimmels en virussen. Deze micro-organismen zijn essentieel voor het leven en functioneren van zeewieren. In dit proefschrift onderzochten we hoe het zeewier Zeesla (Ulva) en geassocieerde microben reageren op veranderingen in het milieu. We richtten ons met name op de zoutgehalte als een belangrijke omgevingsparameter in het Oostzeegebied, waar meer dan 15 ...