fiG 2 - uploaded by Craig Schneider
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-Pleonosporium novae-angliae G.W.Saunders & C.W.Schneider, sp. nov., holotype specimen (GWS005733): A, habit of type specimen; B, origins of rhizoids (arrowheads) that will eventually loosely envelop proximal axial cells (CWS 78-16-3); C, apices of axes and branches with distichous, triangular patterns (CWS 1310); D, tetrasporangium (CWS 78-16-3); E, octosporangium (CWS 78-16-3); F, adaxial tetrasporangium (arrowhead) and octosporangium (double arrowheads) developing singly and in a series on upper lateral branches (CWS 78-16-3). Scale bars: A, 2 cm; B, C, 250 µm; D-F, 50 µm.
Source publication
During a genetic analysis of western Atlantic Wrangeliaceae J.Agardh, specimens closely related to the generitype of Lophothamnion J.Agardh fell into a clade including the generitype of the earlier described Pleonosporium Nägeli, causing us to subsume the former genus. Two new species are described, P. novae-angliae G.W.Saunders & C.W.Schneider, sp...
Citations
Narragansett Bay is an estuarine system in the western North Atlantic Ocean that harbors a diverse marine flora, providing structure, habitat, and food for native biodiversity. This area has been the center of numerous environmental, biological, ecological, and oceanographic studies; however, marine macroalgae have not been extensively examined using modern molecular methods. Here, we document the biodiversity of the red algal order Ceramiales based on DNA sequence comparisons of the 3′ end of the RuBisCo large subunit (rbcL-3P) and the universal plastid amplicon (UPA). Thirty-seven distinct species of this order were identified and validated with molecular data, including five new species reports and at least one new report of an introduced species, Antithamnionella spirographidis, in the vicinity of Narraganset Bay. Novel sequence data were generated for numerous species, and it was discovered that the UPA marker, which has been less frequently used in red algal floristics, revealed an identical inventory of ceramialean algae as the rbcL-3P marker. Thus, the shorter length of the UPA marker holds promise for DNA metabarcoding studies that seek to elucidate biodiversity across algal phyla.
