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Exemplaires(1)
| Cote | Localisation | Disponibilité |
|---|---|---|
| P0177-6 | Brest | Exclu du prêt |
Dépouillements
Ajouter le résultat dans votre panierCharophytes in warm springs on Svalbard (Spitsbergen) : DNA barcoding identifies Chara aspera and Chara canescens with unusual morphological traits / Anders Langangen in Botany letters, vol. 167, n°2 (Année 2020)
Titre : Charophytes in warm springs on Svalbard (Spitsbergen) : DNA barcoding identifies Chara aspera and Chara canescens with unusual morphological traits Type de document : texte imprimé Auteurs : Anders Langangen, Auteur ; Andreas Ballot, Auteur ; Petra Nowak, Auteur ; Suzanne Schneider, Auteur Année de publication : 2020 Article en page(s) : pp. 179-186 Langues : Anglais (eng) Catégories : [ZG] Norvège
[Thèmes] Charophytes / CharacéesMots-clés : MATK (Megakaryocyte-Associated Tyrosine Kinase) Chara aspera Chara canescens morphologie génétique Résumé : "The Troll springs are warm springs on Svalbard (Spitsbergen). Charophytes were collected in the years 1910, 1912, 1958, 1992/1993, and 2018. However, since the Chara samples showed unusual morphological traits, there were doubts with respect to species identity. We here use DNA barcoding to show that there occur two Chara species in the Troll springs: Chara aspera and C. canescens." (source : auteurs) Type de publication : périodique Référence biblio : Langangen A., Ballot A., Nowak P., Schneider S., 2020 - Charophytes in warm springs on Svalbard (Spitsbergen) : DNA barcoding identifies Chara aspera and Chara canescens with unusual morphological traits. Botany letters, 167 (2) : 179-186. ID PMB : 69484 DOI : 10.1080/23818107.2019.1672104 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69484
in Botany letters > vol. 167, n°2 (Année 2020) . - pp. 179-186[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Exclu du prêt
Titre : Genetic and morphological variation in Chara contraria and a taxon morphologically resembling Chara connivens Type de document : texte imprimé Auteurs : Ivana Trbojevic, Auteur ; Aleksandra Markovic, Auteur ; Jelena Blazencic, Auteur ; Gordana Subakov Simic, Auteur ; Petra Nowak, Auteur ; Andreas Ballot, Auteur ; Suzanne Schneider, Auteur Année de publication : 2020 Article en page(s) : pp. 187-200 Langues : Anglais (eng) Catégories : [Thèmes] Charophytes / Characées Mots-clés : génétaique morphologie MATK (Megakaryocyte-Associated Tyrosine Kinase) Chara contraria Chara connivens comparaison d'espèces Résumé : "Charophyte species delineation is regularly based on a set of thallus morphological characteristics, but considering pronounced phenotypic plasticity, difficulties and doubts commonly occur in Chara species determination. DNA barcoding may contribute to solving these challenges. Here we characterize Chara contraria with an unusual set of morphological characteristics, and specimens morphologically resembling Chara connivens collected in Serbia, by describing their morphological traits and analysing matK barcoding results. Our results indicated that dioecious Chara specimens, tentatively determined as Chara “connivens” based on morphological traits, were genetically more closely related to C. globularis. These Chara “connivens” specimens formed a sister group to a monophyletic C. globularis cluster, suggesting that it may be neither C. connivens nor C. globularis. We strongly encourage further barcoding of C. “connivens” samples from freshwater, in order to find out if there are consistent genetic differences between the dioecious freshwater C. “connivens” and monoecious C. globularis. Barcoding of matK placed the monoecious Chara specimens, which based on morphological characteristics initially were determined as C. virgata, into the C. contraria group. This indicates that the microscopic traits which commonly are used for Chara species determination sometimes are misleading. In general, our study challenges the commonly used phenetic species concept in Charophyte taxonomy and illustrates the importance of molecular approaches to evaluate the validity of morphological characteristics of the plant thallus in species delineation." (source : auteurs) Type de publication : périodique Référence biblio : Trbojevic I., Markovic A., Blazencic J., Subakov Simic G., Nowak P., Ballot A., Schneider S., 2020 - Genetic and morphological variation in Chara contraria and a taxon morphologically resembling Chara connivens. Botany letters, 167 (2) : 187-200. ID PMB : 69485 DOI : 10.1080/23818107.2019.1703808 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69485
in Botany letters > vol. 167, n°2 (Année 2020) . - pp. 187-200[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Exclu du prêt
Titre : Salvia hispanica (chia) - from nutritional additive to potential invasive species Type de document : texte imprimé Auteurs : U. Silc, Auteur ; I. Dakskobler, Auteur ; F. Küzmic, Auteur ; B. Vres, Auteur Année de publication : 2020 Article en page(s) : pp. 255-264 Langues : Anglais (eng) Catégories : [ZG] Europe
[Thèmes] Plante comestibleMots-clés : Salvia hispanica potentiel envahissant plante invasive aire de répartition écologie habitat évaluation des risques Résumé : "The article presents the European distribution of Salvia hispanica, or chia, a plant species native to Central America. The species is very popular as a nutritional additive in the diet of the western world. The first reports of species occurrence are from 2013 and it is now reported in eight European countries. We present the ecology, habitat, possible pathways of introduction and limits of potential invasion. We assessed the species invasive potential using three different risk assessment methods." (source : auteurs) Type de publication : périodique Référence biblio : Silc U., Dakskobler I., Küzmic F., Vres B., 2020 - Salvia hispanica (chia) - from nutritional additive to potential invasive species. Botany letters, 167 (2) : 255-264. ID PMB : 69486 DOI : 10.1080/23818107.2019.1700550 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=69486
in Botany letters > vol. 167, n°2 (Année 2020) . - pp. 255-264[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Exclu du prêt
Titre : Is the Mesopotamian region a main source of Western European segetal plants ? Type de document : texte imprimé Auteurs : Sami Youssef, Auteur ; Jocelyne Cambecèdes, Auteur ; Errol Vela, Auteur Année de publication : 2020 Article en page(s) : pp. 290-299 Langues : Anglais (eng) Catégories : [ZG] Europe
[Thèmes] Bassin méditerranéenMots-clés : agroécologie plante messicole origine biogéographique Résumé : "The Mesopotamian Region is often recognised as the origin of the Western European (W European) segetal plants that have been coevolving with winter cereals since the emergence of agriculture. This eastern origin assumption is based on the close association between cereal domestication and arable weed occurrence. However, it has never been properly tested and the debate of their biogeographical origin continues. Here, we conducted a comparative floristic analysis of the complete French segetal plant list to provide a global comprehension vision on their hypothetic Mesopotamian origin. We found a total of 58 of the 102 segetal French taxa that occur both in the fields and in primary natural habitats in the Upper Mesopotamian Region. In contrast, in France, only 39 species are facultative weeds under the Mediterranean bioclimate while they are obligatory weeds under Temperate bioclimate. A significant part of them is endemic to W Europe occurring in primary natural habitats, and thus contributing to enrich the local segetal assemblage. Contrary to the general belief of their eastern origin, these French segetal taxa are originated from various biogeographical regions (Eurasiatic, European, Eury-Mediterranean, Mediterranean, Mediterranean-Touranian and W-Asiatic) and not only from the Upper Mesopotamian Region. Hence, we propose a hypothetical scheme to illustrate the various segetal assemblages as the result of an accumulative local colonization/extinction process alongside the cereal migration routes. Therefore, primary natural source versus secondary field sink habitats have considerably contributed to the segetal assemblage and thus represent crucial new contributions to our knowledge of their various biogeographical origin." (source : auteurs) Type de publication : périodique Référence biblio : Youssef S., Cambecèdes J., Vela E., 2020 - Is the Mesopotamian region a main source of Western European segetal plants ? Botany letters, 167 (2) : 290-299. ID PMB : 70368 DOI : 10.1080/23818107.2020.1737222 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=70368
in Botany letters > vol. 167, n°2 (Année 2020) . - pp. 290-299[article]Exemplaires(1)
Cote Localisation Disponibilité P0177-6 Brest Exclu du prêt
