A Review of Sooty Blotch and Flyspeck Disease in German Organic Apple Production

Weber, Roland W.S.; Späth, Sybille; Buchleither, S.; Mayr, Ulrich

doi:10.1007/s10341-016-0266-x

Cited by 1 publication

(1 citation statement)

References 42 publications

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“…Antiscab fungicides represent the largest fraction of apple disease management treatments (Didelot et al, 2016) and the introduction of scabresistant apple cultivars can considerably reduce fungicide applications (Ellis et al, 1998;Simon et al, 2011;Didelot et al, 2016). However, the fungicides applied to control apple scab can have side effects on secondary pathogens, such as Diplodia seriata (Brown-Rytlewski and McManus, 2000;Beer et al, 2015;Arrigoni et al, 2019) or the sooty blotch and flyspeck disease complex (Weber et al, 2016). Therefore, the introduction of scabresistant apple cultivars, with the consequent reduction in the use of fungicide sprays under low-input disease management, may cause the outbreak of secondary diseases (Warner, 1991;Ellis et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Tissue age, orchard location and disease management influence the composition of fungal and bacterial communities present on the bark of apple trees

Arrigoni

Albanese

Longa

et al. 2020

Environmental Microbiology

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Plants host microbial communities that can be affected by environmental conditions and agronomic practices. Despite the role of bark as a reservoir of plant pathogens and beneficial microorganisms, no information is available on the effects of disease management on the taxonomic composition of the barkassociated communities of apple trees. We assessed the impact of disease management strategies on fungal and bacterial communities on the bark of a scabresistant apple cultivar in two orchard locations and for two consecutive seasons. The amplicon sequencing revealed that bark age and orchard location strongly affected fungal and bacterial diversity. Microbiota dissimilarity between orchards evolved during the growing season and showed specific temporal series for fungal and bacterial populations in old and young bark. Disease management did not induce global changes in the microbial populations across locations and seasons, but specifically affected the abundance of some taxa according to bark age, orchard location and sampling time. Therefore, the disease management applied to scab-resistant cultivars, which is based on a limited use of fungicides, partially changed the taxonomic composition of bark-associated fungal and bacterial communities, suggesting the need for a more accurate risk assessment regarding possible pathogen outbreaks.

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