Jukuri

Tervetuloa käyttämään Jukuria, Luonnonvarakeskuksen (Luke) avointa julkaisuarkistoa. Jukurissa on tiedot Luken julkaisutuotannosta. Osa julkaisuista on vapaasti ladattavissa. Luken muodostaneiden tutkimuslaitosten aikaisemmasta julkaisutuotannosta osan tiedot ovat järjestelmässä jo nyt ja kattavuus paranee jatkuvasti.

Kokoelmat

Näytetään 1 - 2 / 2

Viimeksi tallennetut

The 2030 Declaration on Scientific Plant and Fungal Collecting

Antonelli, Alexandre; Teisher, Jordan K.; Smith, Rhian J.; Ainsworth, A. Martyn; Furci, Giuliana; Gaya, Ester; Gonçalves, Susana C.; Hawksworth, David L.; Larridon, Isabel; Sessa, Emily B.; Simões, Ana Rita G.; Suz, Laura M.; Acedo, Carmen; Aghayeva, Dilzara N.; Agorini, Alessandro A.; Harthy, Laila S. Al; Bacon, Karen L.; Chávez-Hernández, María Guadalupe; Colli-Silva, Matheus; Crosier, Joette; Davey, Alexandra H.; Dhanjal-Adams, Kiran; Eguia, Paul Y.; Eiserhardt, Wolf L.; Forest, Félix; Gallagher, Rachael V.; Gigot, Guillaume; Gomes-da-Silva, Janaína; Govaerts, Rafaël H. A.; Grace, Olwen M.; Gudžinskas, Zigmantas; Hailemikael, Tilahun G.; Ibadullayeva, Sayyara J.; Idohou, Rodrigue; Márquez-Corro, José I.; Müller, Sandro P.; Negrão, Raquel; Ondo, Ian; Paton, Alan J.; Pellegrini, Marco O.O.; Penneys, Darin S.; Pironon, Samuel; Rafidimanana, Daniel V.; Ramnath-Budhram, Ramone; Rasaminirina, Fitiavana; Reiske, Julie A.; Sage, Rowan; Salino, Alexandre; Silvestro, Daniele; Simmonds, Monique S.J.; Gomez, Marybel Soto; Souza, Juliana L.; Taura, Laurynas; Taylor, Amanda; Vasco-Palacios, Aida M.; Vasques, Diego T.; Weigelt, Patrick; Wieczorkowski, Jakub D.; Williams, China
Plants, people, planet : 1 (John Wiley & Sons, 2025)

Almost all life depends on plants and fungi, making knowledge of their diversity and distribution—primarily derived from biological collections—fundamental to national and international conservation, restoration and sustainable use commitments. However, it is estimated that some 15% of all plant species and over 90% of all fungal species have not yet been scientifically described, hampering our ability to assess and demonstrate the impact of efforts to halt biodiversity loss. In addition, organisations and researchers around the world lack a concerted strategy for increasing complementarity and avoiding overlap in botanical and mycological research, particularly in relation to the collection of specimens. We here present the 2030 Declaration on Scientific Plant and Fungal Collecting, summarising a commitment towards such a necessary strategy. Its components were identified from discussions during and after a series of four workshops and plenary discussions at the 2023 State of the World's Plants and Fungi symposium convened by the Royal Botanic Gardens, Kew, and were then consolidated into the present form by the authors. The Declaration was subsequently opened up for endorsement by signatories. Collectively, we agree on a set of five commitments for cataloguing the world's flora and funga, designed to maximise efficiency, facilitate knowledge exchange and promote equitable collaborations: (1) use evidence-based collection strategies; (2) strengthen local capacity; (3) collaborate across taxa and disciplines; (4) collect for the future; and (5) share the benefits. This Declaration is a first step towards increased global and regional coordination of scientific collecting efforts.

Effects of tannin-geopolymer impregnation on wood: leachability, biodegradation resistance and mechanical properties

Lopez-Gomez, Yeray Manuel; Barbero-Lopez, Aitor; Suvanto, Sari; Venäläinen, Martti; Haapala, Antti
European journal of wood and wood products : 1 (Springer Nature, 2025)

Geopolymers have elicited significant attention in the field of construction and building materials due to their enhanced durability, physical load-bearing ability and chemical resistance. This study investigates the effects of geopolymer impregnation on wood, together with commercial tannin-rich bark extract Colatan GT10, which, by itself, preserves wood against decay but leaches out once the wood is exposed to water. The efficacy of the treatments is evaluated through attenuated total reflectance Fourier transform infrared (ATR FTIR) spectroscopy, mechanical testing, decay resistance assessment (EN 113) and leachability analysis (EN 84). The results showed that the two-step tannin-geopolymer impregnation improved the durability of wood against wood decay fungi. The mechanical properties of the treated wood specimen were not different from that of the untreated controls, and the performance of the treated wood specimen was retained after the leaching test. The FTIR revealed that the absorbance of tannin at 10 and 5% treatments was reduced after leaching, indicating the leachability of tannin. The combination of tannin at 5% with subsequent geopolymer at 4% treatment yielded the best performance, showing no significant change in absorbance before and after the leaching test. Overall, this study highlights the potential of combining tannin and geopolymer impregnation treatments to enhance the performance of wood in terms of fixation, leachability and wood decay resistance. These findings contribute to the development of a durable wood material for various applications, such as outdoor construction, where resistance to decay is a critical factor.

Genomes of the Bacterial Endosymbionts of Carrot Psyllid Trioza apicalis Suggest Complementary Biosynthetic Capabilities

Thompson, Sarah E.; Wang, Jinhui; Schott, Thomas; Nissinen, Riitta; Haapalainen, Minna Liisa
Current microbiology : 4 (Springer Nature, 2025)

Carrot psyllid Trioza apicalis is a serious pest of cultivated carrot and also a vector of the plant pathogen ‘Candidatus Liberibacter solanacearum’ (Lso). To find out whether T. apicalis harbours other species of bacteria that might affect the Lso infection rate, the bacterial communities and metagenome in T. apicalis were studied. Lso haplotype C was detected in a third of the psyllids sampled, at different relative amounts. Surprisingly, T. apicalis was found to harbour only one secondary endosymbiont, a previously unknown species of gamma proteobacterium endosymbiont (Gpe), beside the primary endosymbiont ‘Candidatus Carsonella ruddii’ (CCr). The relative abundancies of these two endosymbionts were approximately equal. The genomes of CCr, Gpe and Lso were assembled from a T. apicalis metagenome sample. Based on the 16S rRNA gene, the closest relative of Gpe of T. apicalis could be a secondary endosymbiont of Trioza magnoliae. The 253.171 kb Gpe genome contains all the tRNA and rRNA genes and most of the protein-coding genes required for DNA replication, transcription and translation, but it lacks most of the genes for amino acid biosynthesis. Gpe has no genes encoding cell wall peptidoglycan synthesis, suggesting it has no cell wall, and could thus live as an intracellular endosymbiont. Like the CCr of other psyllids, CCr of T. apicalis retains a broad amino acid biosynthetic capacity, whilst lacking many genes required for DNA replication and repair and for transcription and translation. These findings suggest that these two endosymbionts of T. apicalis are complementary in their biosynthetic capabilities.

Economic viability of urban greening as a climate change adaptation measure in cool-climate cities

Suomi, Juuso; Hyyrynen, Matti; Käyhkö, Janina; Käyhkö, Jukka; Juhola, Sirkku
Regional environmental change : 3 (Springer Nature, 2025)

This study explores whether urban greening through tree planting is an economically viable climate change adaptation measure in Northern Europe’s climate. The analysis was conducted by modelling how increased tree canopy cover affects the urban heat island (UHI) effect and, in turn, reduces heatwave-related mortality among vulnerable populations. Using modelling data from 2022 to 2100 for three Finnish cities—Helsinki, Turku, and Oulu—the results suggest that, in some cases, tree planting can be an economically viable adaptation measure to reduce heat-related deaths. This requires that greening is applied in the most densely populated areas of the city. Among the three cities, greening proves most economically viable in Helsinki, which has the highest population density of the three study cities. Conversely, it is not an economically viable adaptation option in Oulu, the study’s northernmost and least densely populated city. The effectiveness of greening in economic terms varies depending on the city, the specific climate change scenario, and the intensity of the greening effort. As a result, the net present value (NPV) of tree planting may be either positive or negative. Therefore, any greening initiative should be carefully evaluated within its local context.

Genomiset työkalut vauhdittavat pian mansikan jalostusta

Rehman, Attiq ur; Haikonen, Tuuli
Puutarha & kauppa : 1 (Puutarhaliitto, 2026)