A new species of Podosphaera sect. Sphaerotheca subsect. Magnicellulatae from India and a key to all species reported on Fabaceae

SANJAY YADAV; SANJEET KUMAR VERMA; RAGHVENDRA SINGH; VINAY KUMAR SINGH; PRAKASH KUSHWAHA

doi:10.11646/phytotaxa.453.2.2

Issue: Vol. 453 No. 2: 22 July 2020

Type: Article

Published: 2020-07-22

DOI: 10.11646/phytotaxa.453.2.2

Page range: 108–120

Abstract views: 56

PDF downloaded: 2

A new species of Podosphaera sect. Sphaerotheca subsect. Magnicellulatae from India and a key to all species reported on Fabaceae

SANJAY YADAV⁺⁻
SANJEET KUMAR VERMA⁺⁻
RAGHVENDRA SINGH⁺⁻
VINAY KUMAR SINGH⁺⁻
PRAKASH KUSHWAHA⁺⁻

Centre of Advanced Study in Botany, Institute of Science, Banaras Hindu University, Varanasi, U.P., India 221005

Department of Botany, Madhav Rao Sapre Government College, Pathariya, Damoh, M.P., India 470666

Fungi Ascomycota Erysiphaceae phylogeny taxonomic novelty

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Abstract

Podosphaera thermopsidicola, a new sexual morph form of powdery mildew was discovered on living leaves of Thermopsis barbata Benth. (Fabaceae). It is described, illustrated and compared with other Podosphaera species reported on Fabaceae. The phylogeny of this species has been inferred from partial nuclear ribosomal 28S large subunit (LSU) and internal transcribed spacer (ITS) rDNA sequence data. On the basis of LSU, P. thermopsidicola represents characteristic feature of Podosphaera s. str. Phylogenetically, P. thermopsidicola is closer to P. erigerontis-canadensis but differs in having larger chasmothecia, longer appendages, thick-walled asci, smaller oculi and smaller ascospores.

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