Plectosphaerella species associated with root and collar rots of horticultural crops in southern Italy

2012/03/27 by A. Carlucci, M.L. Raimondo, Maria Luisa Raimondo +3 · 176 citations
Agricultural and Biological Sciences · Biochemistry, Genetics and Molecular Biology · #Acremonium #Biology #Botany #Collar rot #Cucumis #Fungus #Gene #Genetics #Horticulture #Melon #Pepper #Phylogenetic tree #Plant Disease Resistance and Genetics #Plant Pathogens and Fungal Diseases #Plant Pathogens and Resistance #Ribosomal RNA

paper · open access · doi:10.3767/003158512x638251

published in Persoonia - Molecular Phylogeny and Evolution of Fungi 28(1), 34-48 (National Herbarium of the Netherlands)

openalex publication_date 2012/03/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/03

Abstract

Plectosphaerella cucumerina, most frequently encountered in its Plectosporium state, is well known as a pathogen of several plant species causing fruit, root and collar rot, and collapse. It is considered to pose a serious threat to melon (Cucumis melo) production in Italy. In the present study, an intensive sampling of diseased cucurbits as well as tomato and bell pepper was done and the fungal pathogens present on them were isolated. Phylogenetic relationships of the isolates were determined through a study of ribosomal RNA gene sequences (ITS cluster and D1/D2 domain of the 28S rRNA gene). Combining morphological, culture and molecular data, six species were distinguished. One of these (Pa. cucumerina) is already known. Four new species are described as Plectosphaerella citrullae, Pa. pauciseptata, Pa. plurivora and Pa. ramiseptata. Acremonium cucurbitacearum is shown to be a synonym of Nodulisporium melonis and is transferred to Plectosphaerella as Plectosphaerella melonis comb. nov. A further three known species of Plectosporium are recombined in Plectosphaerella.

Citations

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