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Herbaceous Ludwigia spp. plants in summer 2018: a) L. grandiflora subsp. hexapetala, in the Ebre River, at Amposta; and b) L. peploides subsp. montevidensis, in the Ter River, near Colomers.
Source publication
Noves contribucions a les espècies aŀlòctones de Ludwigia (Onagraceae) a Catalunya
Butlletí de la Institució Catalana d’Història Natural
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Multiple invaders usually co-occur in an ecosystem and threaten the ecological safety of ecosystems. Invasive species from the same origin could facilitate each other’s establishment, while some species could suppress invasion from others with similar traits. For the successful management of aquatic ecosystems invaded by multiple invasive species,...
Background:
While polyploids are common in plants, the evolutionary history and natural dynamics of most polyploid groups are still unclear. Owing to plentiful earlier systematic studies, Ludwigia sect. Isnardia (comprising 22 wetland taxa) is an ideal allopolyploid complex to investigate polyploid evolution and natural dynamics within and among t...
Ludwigia decurrens Walter, belonging to the Onagraceae family, is native to southeastern and southcentral USA and has spread quickly, colonizing wetlands in South and Central America, East and South Asia and Africa. Ludwigia decurrens also infests rice paddy fields and causes serious damage to rice production. The phenomenon of allelopathy is often...
Citations
... 698, 195 m, herbassars al marge del torrent i la carretera de la Mútua (Fig. 3a) Hidròfit d'origen americà introduït amb finalitats ornamentals a diversos països europeus i que té un fort comportament invasor. Recentment, s'han publicat dos treballs que revisen la situació de les espècies del gènere Ludwigia allòctones a Catalunya (Bou & Font, 2016. Bou et al., 2019. De Ludwigia peploides subsp. montevidensis indiquen diverses poblacions (en hàbitats naturals o en hàbitats artificials) a les comarques gironines, una al delta de l'Ebre i una altra riu Llobregat, al Prat de Llobregat. La nova localitat que indiquem a les llacunes de can Duran correspon a la segona localitat per a les comarques barcel ...
Resum: En aquest treball aportem dades de plantes aŀlòctones a les serralades Litoral i Prelitoral catalanes. Entre elles destaquen Alternanthe-ra philoxeroides, Lamium galeobdolon subsp. argentatum, Lasthenia glabrata, Nemophila maculata, Pascalia glauca, Phacelia parryi, Sphagneticola trilobata i Watsonia borbonica ja que s'indiquen les primeres observacions fetes a Catalunya.
Abstract: We provide new data about alien plants in the Catalan Litoral and Prelitoral Range. Alternanthera philoxeroides, Lamium galeobdolon subsp. argentatum, Lasthenia glabrata, Nemophila maculata, Pascalia glauca, Phacelia parryi, Sphagneticola trilobata and Watsonia borbonica are first reported in Catalonia.
Biological invasions have been identified as the fifth cause of biodiversity loss, and their subsequent dispersal represents a major ecological challenge. The aquatic invasive species Ludwigia grandiflora subsp. hexapetala (Lgh) and Ludwigia peploides subsp. montevidensis (Lpm) are largely distributed in aquatic environments in North America and in Europe. However, they also present worrying terrestrial forms that are able to colonize wet meadows. To comprehend the mechanisms of the terrestrial adaptation of Lgh and Lpm, it is necessary to develop their genomic resources, which are currently poorly documented. We performed de novo assembly of the mitogenomes of Lgh and Lpm through hybrid assemblies, combining short reads (SR) and/or long reads (LR) before annotating both mitogenomes. We successfully assembled the mitogenomes of Lgh and Lpm into two circular molecules each, resulting in a combined total length of 711,578 bp and 722,518 bp, respectively. Notably, both the Lgh and Lpm molecules contained plastome-origin sequences, comprising 7.8% of the mitochondrial genome length. Additionally, we identified recombinations that were mediated by large repeats, suggesting the presence of multiple alternative conformations. In conclusion, our study presents the first high-quality mitogenomes of Lpm and Lgh, which are the only ones in the Myrtales order found as two circular molecules.
Presentamos datos de interés corológico sobre algunas especies de flora vascular no conocidas o que cuentan con pocos registros en los humedales de Galicia. Se incluyen dos novedades para la flora gallega: Ludwigia peploides subsp. montevidensis y Sicyos angulatus, y otras novedades provinciales como Myosotis debilis y Potamogeton pectinatus; las demás especies que se incluyen o son muy escasas, o no hay referencias bibliográficas de su presencia en el territorio en el último medio siglo.
