European Journal of Plant Pathology

Abstract The Grapevine fanleaf virus (GFLV) transmitted by the vector nematode Xiphinema index causes severe losses in viticulture. Truly resistant rootstocks that inhibit nematode development and virus transmission to grapevines are not available. Seedlings with genetic background of the accession Vitis shuttleworthii D’Arpa were evaluated using an established screening system to test for nemato…

Abstract This study aims to evaluate the phenotypic and molecular levels of resistance of Triticum aestivum L. (bread wheat) genotypes to leaf rust ( Puccinia triticina ) and stripe rust ( Puccinia striiformis ). Increasing climate pressures and the rapid evolution of pathogens threaten wheat production, underscoring the critical role of understanding genetic resistance mechanisms for sustainable…

Abstract Fusarium oxysporum , the causal agent of root rot and vascular wilt in common bean ( Phaseolus vulgaris ), represents a substantial risk to legume cultivation. The current study offers a comparative examination of the antifungal efficacy of agro-industrial wastes from cumin ( Cuminum cyminum ), anise ( Pimpinella anisum ), and banana peel ( Musa paradisiaca ), and their green-synthesized…

Abstract Common bean ( Phaseolus vulgaris ), a key component of human nutrition, is highly susceptible to infection by Colletotrichum lindemuthianum , a fungus that rapidly develops fungicide resistance. Since this phytopathogen represents a challenge to common bean crops, new fungicides are needed to control it. Thus, curcuminoids have emerged as potential antifungal candidates. In this study, w…

Abstract Olive anthracnose, caused by Colletotrichum spp., remains one of the most destructive diseases affecting olive cultivation, with severe consequences for global olive production. Cultivar susceptibility is influenced by fruit maturation stage and modulated by environmental conditions; however the defense mechanisms underlying these interactions are still poorly understood. To investigate …

Abstract Citrus scab diseases are caused by three species of Elsinoë . These are important diseases affecting citrus production and impacting international trade of fresh fruits, because of quarantine restrictions. Repeated rejections of shipments of Citrus × latifolia (Tahiti lime – TL) fruit imported from Brazil were determined by European quarantine authorities, due to the detection of Elsinoë…

Abstract This study investigated whether the genus Luffa could act as a sporulation inducer for Macrophomina euphorbiicola , with the aim of providing a morphological description and proposing a taxonomic amendment for the species. In a greenhouse, Luffa cylindrica was inoculated with M. euphorbiicola to induce the formation of pycnidia and conidia. Previously, M. euphorbiicola had been described…

Abstract Phytophthora palmivora is an Oomycete pathogen widespread in tropical and subtropical regions, causing severe diseases such as fruit rot, bud rot, blight, cankers, and root rot. Papaya is grown in South Africa by smallholder and commercial farmers in the Limpopo and Mpumalanga provinces. In 2019, widespread symptoms of crown and root rot were observed in South African papaya orchards, le…

Abstract Genetic variability within a pathogen species underlies its ability to infect multiple plant species. Curtobacterium flaccumfaciens is a notable example of a pathogen capable of colonizing plant tissues across different species, including those within the same family or across distinct families. The pathovar flaccumfaciens comprises isolates that induce both systemic and foliar symptoms …

Abstract Monilinia spp., the causal agent of brown rot in stone fruits, relies on melanin biosynthesis for development, survival, and longevity. In this study, we identified for the first time the presence of the L-3,4-dihydroxyphenylalanine (L-DOPA) pathway in Monilinia spp. ( M. laxa , M. fructicola , and M. fructigena ) through BLAST analysis, and detected L-DOPA-derived pigments using UHPLC-M…

Abstract The bacterial strain Lysobacter capsici AZ78 is an effective biocontrol agent against several plant-pathogenic oomycetes. This study demonstrates that heat-inactivated L. capsici AZ78 cells retain strong protective activity against Plasmopara viticola and Peronospora belbahrii , comparable to that of viable L. capsici AZ78 cells, as well as a copper-based fungicide and a plant resistance…

Abstract Soil and stubble-borne diseases pose significant threats to cropping systems, particularly broadacre crops, leading to reduced soil health and substantial yield losses. Current management strategies, such as chemical and cultural control methods, often face limitations due to their pathogen-specific nature and the trade-offs between effectiveness and environmental footprint. These strate…

Abstract Citrus production is a significant agricultural activity in Brazil, the world's largest producer and exporter of orange juice. However, this production faces phytosanitary challenges, including postbloom fruit drop (PFD) caused by fungi of the genus Colletotrichum . The development of this disease is associated with climate conditions, such as temperature and leaf wetness duration (LWD).…

Abstract Soybean is one of the most important commodities in the world and is affected by several phytopathogens, such as the fungus Macrophomina phaseolina , which can occur at all stages of development, causing significant production losses. The use of different cultural, chemical and genetic control strategies has shown low efficiency against this phytopathogen. Thus, the objective of this stu…