Related Experiment Video
Updated: Apr 26, 2026

Double-Staining Method to Detect Pectin in Plant-Fungus Interaction
Published on: February 4, 2022
Foliicolous fungi from Arctostaphylos pungens in Mexico
Onésimo Moreno-Rico1, Johannes Z Groenewald2, Pedro W Crous3
1Centro de Ciencias Básicas, Departamento de Microbiología, Universidad Autónoma de Aguascalientes, Av. Universidad No. 940, Colonia Cd. Universitaria, C.P. 20131, Aguascalientes, Ags., Mexico.
Abstract:
Arctostaphylos pungens "Manzanita" is an important shrub in the southwestern USA, and northern and central Mexico. Manzanita bears apple-like fruit that is utilised for a range of edible products. Over the past two years, several foliar disease problems were noted on this host in the San José de Gracia region of Mexico. The aim of the present study was to elucidate their identity through the analysis of morphological characters and DNA phylogeny (based on the large subunit nuclear ribosomal RNA gene and the ITS spacers and the intervening 5.8S rRNA gene of the nrDNA operon) of the fungi associated with these disease symptoms. Three species are newly described: Phaeococcomyces mexicanus sp. nov., a presumed epiphyte, and two species associated with leaf spots and defoliation, namely Coccomyces arctostaphyloides sp. nov. and Passalora arctostaphyli sp. nov. A fourth species is also associated with leaf spots and tip dieback is Harknessia arctostaphyli, for which an epitype is designated. All species can co-occur on the same shrub, which adds to the stress experienced by the plant, leading to further defoliation and dieback.
More Related Videos
10:33Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure
Published on: May 27, 2022
06:58Author Spotlight: Evaluation of Entomopathogenic Fungi in Wild Monochamus alternatus Populations for Biocontrol Applications in Forest Wood Borers
Published on: September 29, 2023
Related Concept Videos
Fungal Phylum Basidiomycota
Fungal Group Zygomycota
Fungal Phylum Ascomycota
Fungal Phylum Microsporidia
Bacterial Phylum Planctomycetes
Antifungal Agents