Your browser doesn't support javascript.
loading
Didymium pseudonivicola: A new myxomycete from the austral Andes emerges from broad-scale morphological and molecular analyses of D. nivicola collections.
Janik, Paulina; Szczepaniak, Magdalena; Lado, Carlos; Ronikier, Anna.
Affiliation
  • Janik P; W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
  • Szczepaniak M; W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
  • Lado C; Real Jardín Botánico, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, 28014, Spain.
  • Ronikier A; W. Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, 31-512 Kraków, Poland.
Mycologia ; 113(6): 1327-1342, 2021.
Article in En | MEDLINE | ID: mdl-34533412
ABSTRACT
A new nivicolous myxomycete is described as a result of a comprehensive study of Didymium nivicola collections from the entire range of its occurrence. Statistical analysis of 12 morphological characters, phylogenetic analyses of nuc 18S rDNA and elongation factor 1-alpha gene (EF1A), and a delimitation method (automatic barcode gap diversity) have been applied to corroborate the identity of the new species. A preliminary morphological analysis of D. nivicola revealed high variability of South American populations where four types of spore ornamentation were noted. However, results of molecular study and statistical analysis of morphological characters did not support recognition of these four forms but the distinction of two morphotypes. Consequently, two species have been recognized D. nivicola and the newly proposed D. pseudonivicola. The new species can be distinguished from D. nivicola by distinctly larger and mostly plasmodiocarpic sporophores, which are scattered to gregarious, paler spores, and by the paler, more delicate and more elastic capillitium. Spore ornamentation of D. pseudonivicola is uniform and can be described as distinctly spiny (pilate under scanning electron microscope [SEM]), whereas those of D. nivicola is more variable, where spines (pilae under SEM) are delicate, distinct, or conspicuous. Additionally, whereas D. nivicola is a species distributed worldwide, D. pseudonivicola occurs only in the austral Andes of Argentina and Chile.
Subject(s)
Key words

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Myxomycetes / Physarida Country/Region as subject: America do sul / Argentina Language: En Journal: Mycologia Year: 2021 Document type: Article Affiliation country: Poland

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Myxomycetes / Physarida Country/Region as subject: America do sul / Argentina Language: En Journal: Mycologia Year: 2021 Document type: Article Affiliation country: Poland
...