Pectobacterium carotovorum subsp. brasiliense is a newly identified member of the potato soft rot enterobacteriaceae. The pathogenesis of this pathogen is still poorly understood. In this study, an mCherry-P. carotovorum subsp. brasiliense-tagged strain was generated to study P. carotovorum subsp. brasiliense-potato plant interactions. Prior to use, the tagged strain was evaluated for in vitro ...

Essential oils from four plants, i.e. geranium, rosa, lemon and mint were tested for their activity in vitro and in vivo against Rhizoctonia solani and Fusarium oxysporum f. sp. phaseoli, the cause of root rot and wilt of beans. In vitro, they were found to have an inhibitory effect against the mycelial growth of R. solani and F. oxysporum f. sp. phaseoli. Complete inhibition in fungal growth w...

Antifungal activity of bioactive compound 2H-Furo[2,3-H]-1-benzopyran-2-one isolated from seeds of Psoralea corylifolia L. were tested against eight Fusarium species of maize seeds at 1001000ppm concentration. F. moniliforme, F. oxysporum, F. semitectum and F. solani were completely inhibited at 600ppm concentration. F. equiseti, F. lateritium and F. proliferatum were completely inhibited at 70...

One of the main problems in production cacao Ecuador is disease caused by fungus Moniliophthora roreri (frosty pod rot) which affects pods. Here, we evaluate genetic diversity this Ecuador, and its sensitivity to fungicide azoxystrobin. We evaluated 76 monosporic cultures from Amazon Pacific coast regions. In vitro assays tested several doses azoxystrobin determine percent growth inhibition IC5...

After harvest, numerous plant pathogenic fungi can infect fresh fruits during transit and storage. Although synthetic fungicides are often used to manage postharvest fruit diseases, their application may lead problems such as the development of fungicide resistance residues on fruits. In present study, antifungal potential nine commercial essential oils (EOs) extracted from Eucalyptus radiata s...

Four bacterial strains, Pseudomonas chlororaphis (PA-23), Bacillus amyloliquefaciens (BS6), Pseudomonas sp. (DF41) and B. amyloliquefaciens (E16) which had been found to have biocontrol activity in vitro assays against Sclerotinia sclerotiorum, the causal agent of stem rot of canola, were tested for their efficacy in greenhouse and field conditions. Microscopic studies showed that P. chlororaph...

Apple growers, private consultants, and extension specialists have all noted that bitter rot is increasingly common and is causing sporadic but economically significant losses throughout the northeastern and north central apple growing regions of North America. Forty years ago, bitter rot was considered a “southern disease” and apples with bitter rot were rarely observed in northern production ...

Bacteria belonging to the Pectobacterium genus are the causative agents of the blackleg and soft-rot diseases that affect potato plants and tubers worldwide. In Pectobacterium, the expression of the virulence genes is controlled by quorum-sensing (QS) and N-acylhomoserine lactones (AHLs). In this work, we screened a chemical library of QS-inhibitors (QSIs) and AHL-analogs to find novel QSIs tar...

A major part of Trichoderma antifungal system consists of a number of genes encoding for an astonishing variety of secreted lytic enzymes including; e.g. chitinase, cellulases and β-1,3glucanases. The present work aimed to apply the mutagenesis technique in genetically breeding program of the bioagent Trichoderma viride to enhance three effective hydrolytic enzymes in their biocontrol abilities...

Management of sugar beet damping off and root rot diseases caused by Sclerotium rolfsii is urgently needed. Therefore, antifungal activities 13 materials including 2 bio agents, seaweeds, 3 chemical inducers 6 fungicides were evaluated. Required inoculum potential either fungal mass or sclerotia to reach more than 50% disease incidence was firstly investigated. Fungal inoculation (40-500...