Plastid DNA sequences and oospore characters of some European taxa of Tolypella section Tolypella (Characeae) identify five clusters, including one new cryptic Tolypella taxon from Sardinia, but they do not coincide with current morphological descriptions

Holzhausen, Anja; Nowak, Petra; Ballot, Andreas; Becker, Ralf; Gebert, Jasmina; Gregor, Thomas; Karol, Kenneth G.; Lambert, Elisabeth; Pérez, William; Raabe, Uwe; Schneider, Susanne C.; Stewart, Nick; Weyer, Klaus van de; Wilde, Volker; Schubert, Hendrik

doi:10.3389/fpls.2023.1096181

Cited by 5 publications

(2 citation statements)

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“…Morphological traits of oospores studied with SEM were considered. They are in good agreement with species variability [40,52,77,96]. The images of gyrogonites and the surface of the oospore of C. neglecta were taken for the first time.…”

Section: Discussionsupporting

confidence: 70%

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The Charophytes (Charophyceae, Characeae) from Dagestan Aquatic Habitats, North Caucasus: Biogeographical and Barcoding Perspectives

Romanov,

Mallaliev,

Barinova

et al. 2023

Environments

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The charophytes in many regions of the world are still poorly understood. This hampers the synthesis of distributional and ecological datasets at worldwide and continental scales, as well as complicates the generalization of species concepts for widely distributed and local taxa. To fill in the blanks for charophytes in the Caucasus and to improve our knowledge of species distribution areas in Eurasia, a field survey and study of available specimens from Dagestan (North Caucasus, Russia) was conducted based on morphological observation using light and scanning electron microscopy and molecular genetic analyses allowing for the precise identification and testing of the presence of cryptic and undescribed taxa. Nineteen new localities for seven Chara species and one Tolypella species, seven new species, and one new genus were identified in the studied region, and one new species in the Caspian Sea region was found. Some species records changed the outline or filled in the gaps in species distribution data. The presence of species distributed mainly in central Eurasia (C. globata, C. neglecta) with mainly Mediterranean–Middle Eastern species (C. gymnophylla) is notable for this region, as well as for other studied regions of the Caucasus characterized by a mixture combination of species with different distribution patterns. Chara gymnophylla was frequent in Dagestan, similar to the Mediterranean and Middle Eastern regions. Small brackish waterbodies on the coast of the Caspian Sea, freshwater mountain rivers, small associated waterbodies, and water reservoirs are the main habitats of charophytes in the studied region. Based on habitat preference and distribution in the Caucasus, recommendations for the protection of some species were suggested. The lack of endemic species among charophytes from Dagestan and Caucasus contrasts with the flora of terrestrial magnoliophytes that is rich in species endemism.

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Section: Discussionsupporting

confidence: 70%

“…variability [40,52,77,96]. The images of gyrogonites and the surface of the oospore of C. neglecta were taken for the first time.…”

Section: Discussionmentioning

confidence: 99%