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Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses / Kévin Billet in Ecology and evolution, 8 (5) (2018) 

Public Citation [article]  inEcology and evolution > 8 (5) (2018) . - 2568-2579 Titre : Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses Type de document : Imprimé Auteurs : Kévin Billet ; Julien Genitoni ; Michel Bozec ; David Renaud ; Dominique Barloy Année de publication : 2018 Article en page(s) : 2568-2579 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Ludwigia grandiflora (Michx.) Greuter & Burdet, 1987 Résumé : In the context of expansion of invasive species, survival of invasive plants is conditioned by their ability to adapt. In France, the water primrose Ludwigia grandiflora, an aquatic invasive species, invades yet wet meadows, leading to a depreciation of their fodder value. Understanding its potential adaption is necessary to its management, strong differences between both morphotypes were expected. So morphological and metabolic responses to terrestrial environment were analyzed for aquatic and terrestrial morphotypes. All morphological and biomass variables were greater in the terrestrial morphotype than the aquatic morphotype, independent of conditions. In terrestrial condition, both morphotypes showed a high production of sugars in root tissues, especially in the terrestrial morphotype and both morphotypes produced a low level of amino acids in shoot tissues. All results demonstrate that the terrestrial condition seems a stressful situation for both morphotypes, which activates glycolysis and fermentation pathways to improve their survival under hypoxic stress. But, only the terrestrial morphotype has been able to adjust its metabolism and maintain efficient growth. In the future, a differential transcriptomic analysis will be carried out to confirm this result. Lien pérenne : DOI : 10.1002/ece3.3848 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=147651 Billet, Kévin, Genitoni, Julien, Bozec, Michel, Renaud, David, Barloy, Dominique 2018 Aquatic and terrestrial morphotypes of the aquatic invasive plant, Ludwigia grandiflora, show distinct morphological and metabolomic responses. Ecology and evolution, 8(5): 2568-2579.

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Consultable Article (2018) URL

Importance or Ludwigia grandiflora as invasive weed on meadows and pastures in Western France / Jacques Haury (2011) 

Public Citation est un extrait de 3rd International Symposium Environmental Weeds and Invasive Plants. Abstracts (2011) Titre : Importance or Ludwigia grandiflora as invasive weed on meadows and pastures in Western France Type de document : Extrait d'ouvrage Auteurs : Jacques Haury ; Florian Noël ; Michel Bozec ; Julie Coudreuse ; Jérémy Guil ; Gaulthier Marrel ; Jean-Luc Maisonne ; Jean Patrice Damien Année de publication : 2011 Importance : 5 p. Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Plantes subspontanées, naturalisées, envahissantes Mots-clés : Ludwigia grandiflora (Michaux) Greuter & Burdet Résumé : In flooded meadows, Large Water Primrose (Ludwigia grandiflora ssp. hexapetala) has become an invasive weed since years in many Western marshes. Settlement occurs both by cuttings and seedlings. Our purpose was (i) to assess progressive colonization in three sites and (ii) to show adaptive traits of Ludwigia “terrestrial forms” using another site with a strong moisture gradient, and (iii) to get recommendations for managers. (i) In the Natural Regional Park of Brière, colonization occurred through dykes. The first appearance was probably due to a dirty dredging engine. In Mazerolles polder, it was due to flooding and was increased by pumping in colonized dykes with much fragmentation. In Apigné meadow bad drainage led to colonization by Ludwigia. Field maps assess progressive colonization on many areas. (ii) Adaptation to land conditions led to reduced biomass of the whole plant and increased ratio between roots and stems. Cumulative stem length was only 21 cm in dry conditions, while it reached 2064 cm in aquatic forms. After settlement, plants are able to survive for years provided there is some remaining moisture in the soil. (iii) As a consequence for managers, barriers limiting dispersion of cuttings should be established in dykes but also along the hydraulic network leaving reed strips. Flooding events should lead to careful field survey to pick up the cuttings. The main problem is when fertile seeds are dispersed all over the area as in Mazerolles. No prevention exists, thus attempts of destroying Ludwigia mats are experimented. Lien pérenne : HAL : hal-00842412 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=85759 Haury, Jacques, Noël, Florian, Bozec, Michel, Coudreuse, Julie, Guil, Jérémy, Marrel, Gaulthier, Maisonne, Jean-Luc, Damien, Jean Patrice 2011 Importance or Ludwigia grandiflora as invasive weed on meadows and pastures in Western France. In: 3rd International Symposium Environmental Weeds and Invasive Plants. Abstracts. : 5 p..

Documents numériques

Consultable Communication (2011) URL