Cucurbitaria staphula on Populus and Its Association with Macrophoma tumefaciens

Arnold, Ruth Horner; Russell, Robert C.

doi:10.2307/3755965

Cited by 2 publications

(1 citation statement)

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“…Russell from Populus balsamifera , P. trichocarpa and P. tremuloides in North America. Cucurbitaria staphula differs from Neocucurbitaria populi by larger, biseriately arranged ascospores of different shape (lower end extended and often pointed), a different asexual morph ( Macrophoma tumefaciens ) and by occurrence on galls ( Arnold and Russell, 1960 , Arnold, 1974 ). The phylogenetically closely related N. juglandicola differs from N. populi in smaller ascospores having only 1–2 longitudinal septa, and by 33 and 31 nucleotide substitutions in tef1 and rpb2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

A preliminary account of the Cucurbitariaceae

Jaklitsch¹,

Checa²,

Blanco³

et al. 2018

Studies in Mycology

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Fresh collections, type studies and molecular phylogenetic analyses of a multigene matrix of partial nuSSU-ITS-LSU rDNA, rpb2, tef1 and tub2 sequences were used to evaluate the boundaries of Cucurbitaria in a strict sense and of several related genera of the Cucurbitariaceae. Two species are recognised in Cucurbitaria and 19 in Neocucurbitaria. The monotypic genera Astragalicola, Cucitella, Parafenestella, Protofenestella, and Seltsamia are described as new. Fenestella is here included as its generic type F. fenestrata (= F. princeps), which is lecto- and epitypified. Fenestella mackenzei and F. ostryae are combined in Parafenestella. Asexual morphs of Cucurbitariaceae, where known, are all pyrenochaeta- or phoma-like. Comparison of the phylogenetic analyses of the ITS-LSU and combined matrices demonstrate that at least rpb2 sequences should be added whenever possible to improve phylogenetic resolution of the tree backbone; in addition, the tef1 introns should be added as well to improve delimitation of closely related species.

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Section: Resultsmentioning

confidence: 99%