Erysiphe deutziicola sp. nov. (Erysiphaceae, Ascomycota), a powdery mildew species found on Deutzia parviflora (Hydrangeaceae) with unusual appendages

Abstract

A powdery mildew (Erysiphales) has recently been collected on leaves of an ornamental shrub Deutziaparviflora in Baihua Mountain, Beijing, China. Microscopic examination of the chasmothecia suggested a species belonging to Erysiphesect.Erysiphe, above all due to mycelioid chasmothecial appendages, although circinate apices of the appendages were rather in favour of Erysiphesect.Uncinula, which is a fairly rare combination of appendage characteristics in Erysiphe. Phylogenetic analyses of ITS and 28S rDNA sequences demonstrated that the two examined powdery mildew collections on D.parviflora clustered together as an independent lineage within Erysiphe with 100% bootstrap support, representing a species of its own, which is phylogenetically allied to, but clearly distinct from Erysiphedeutziae and, in addition, morphologically quite different from all known Erysiphe species on hosts belonging to the Hydrangeaceae. The new species on D.parviflora is described as Erysiphedeutziicola.

Effect of pepper and cabbage planting on loess of Guyuan region of China on microbial diversity

“…Ascomycota is one of most diverse phyla of eukaryotes with at least 83,000 described species that represent more than half of all described species of fungi and known for their phenotypic diversity, including their extremotolerance and ability to grow on various carbon sources (Moustafa, et al 2011;Stenroos, et al 2019). Numerous studies have documented the fungal species belonging to Ascomycota are important saprobic or parasitical organisms that live on a wide range of organic substrates which infect plant tissue/organ to result in the happening of powdery mildew (Qiu, et al 2019), anthracnose (Johnny, et al 2011), disease etc. (Charron, et al 2018).…”

Alteraciones anatómicas e histoquímicas ocasionadas por la oidiosis en hojas de Hydrangea macrophylla (Hydrangeaceae)

“…(Windham et al, 2011), Alternaria alternata Fr., Colletotrichum gloeosporioides Penz, Phoma exigua Desm, Myrothecium roridum Tode (Mmbaga et al, 2012). La principal enfermedad foliar ocasionada por micopatógenos en esta planta, se conoce comúnmente como Oidiosis o ceniza (Li et al, 2018;Qiu, Braun, Li, & Li, 2019). En H. macrophylla se ha reportado que esta enfermedad puede ser ocasionada por micopatógenos del orden Erisiphales, y las especies que se reportan como agentes causantes de la Oidiosis son: (Li et al, 2009a(Li et al, , 2009bSchmidt & Scholler, 2011;Windham et al, 2011;Braun & Cook, 2012;Park, Cho, Park, Lee & Shin, 2012;Li et al, 2018;Qiu et al, 2019).…”