Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 336 No. 2: 30 January 2018
Type: Article
Published: 2018-01-30
DOI: 10.11646/phytotaxa.336.2.3
Page range: 159–170
Abstract views: 86
PDF downloaded: 80

Phylogeny and morphology reveal two new species of Diaporthe from Traditional Chinese Medicine in Northeast China

The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
The Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing 100083, China
Diaporthaceae dieback molecular phylogeny taxonomy Fungi

Abstract

Diaporthe sambucusii sp. nov and D. schisandrae sp. nov., collected from diseased branches of Traditional Chinese Medicine in Northeast China, Sambucus williamsii Hance and Schisandra chinensis (Turcz.) Baill, are herein described and illustrated. Recognition of the two new species are supported by both holomorphic morphology and phylogenetic analysis. Morphologically, D. sambucusii is distinguished by hyaline, aseptate, smooth, ovoid to subfusiform, biguttulate alpha conidia (7.0–9.5 × 2.0−2.5 μm) and beta conidia hyaline, aseptate, straight to hamate, 18.5–23.5 × 0.9–1.1 μm, similar to most species of Diaporthe. Diaporthe schisandrae is characterized by hyaline, aseptate, ellipsoidal to fusoid, somewhat tubercular at one end and obtuse at other, 1–3-guttulate alpha conidia (8.5–11.5 × 2.7−3.3 μm). Phylogenetic analysis using CAL, HIS, ITS, TEF1-α, and TUB molecular data shows that the isolates of the new species form two distinct clade within Diaporthe (MP/ML/BI=100/100/1).