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... Leaf spots and stem lesions causing widespread mortality of Caspian Sea karelinia (Karelinia caspia) were observed in desert regions of Xinjiang Uyghur Autonomous Region, China. Fifteen samples were collected from five widely distributed counties of Tarim and Junggar Basins in 2016. The pathogen was identified using morphological observations and phylogenetic analyses based on combined partial seq ...
... Alternaria spp. are pathogens of several diseases that pose significant threats to apple production. Several putative Alternaria sp. isolates were obtained from lesions of a disease commonly referred to as black dot on apple fruit in Shaanxi Province, China. Pathogenicity tests using mycelial plugs and conidial suspensions indicated that this isolate could cause leaf blotch, as well as moldy core ...
... Four Melodinus species with antifungal activity were found in survey of the floral resources, in Shiwan Mountain Natural Reserve, Guangxi Province, China. Crude methanolic extracts of the twigs and leaves of Melodinus suaveolens exhibited potent antifungal activities against the plant pathogenic fungi Colletotrichum musae, Colletotrichum graminicola, Colletotrichum gloeosporioides and Alternaria m ...
... BACKGROUND: Sweet potato [Ipomoea batatas (L.) Lam.] plays an important role in ensuring food security and incomes for local communities. It is particularly grown in southern region of Benin, and its production over the last few years has declined due to disease and severe pest infestation. Therefore, it was imperative to carry out this study to identify the main constraints related to the recent ...
... Antagonistic bacteria are common soil inhabitants with potential to control several soil-borne diseases of various crops. In this study, two methomyl degrading Bacillus sp. were screened for their antagonistic potential against soil borne pathogen identified as Alternaria sp. which causes leaf spot and blight disease in lentil. Both the strains produced non-volatile and volatile organic compounds, ...
Amanda da Silva Ribeiro; Julio Cesar Polonio; Alessandra Tenório Costa; Caroline Menicoze dos Santos; Sandro Augusto Rhoden; João Lúcio Azevedo; João Alencar Pamphile
... Endophytes are fungi and bacteria that inhabit plant tissues without causing disease. Endophytes have characteristics that are important for the health of the plant and have been isolated from several plants of economic and medicinal interest but rarely from ornamental plants. The current study isolates and identifies endophytic fungi from the leaves of Pachystachys lutea and evaluates the antagon ...
... Herein, we report chicken egg white (CEW) and L-cysteine (L-Cys) as cooperative ligands for effective encapsulation of Zn-doped silver nanoclusters (Zn-doped Ag NCs) for enhancing optical properties in sensing of Hg²⁺ ion and bioimaging of fungal cells (Alternaria sp.). The emission peak at 657 nm was remarkably enhanced by doping of Zn-atom into Ag NCs, suggesting the proteins of CEW and L-Cys pr ...
... The inactivation of four micromycete species by action of non-thermal plasma was followed. Two sources of plasma were compared, namely, positive corona discharge and dielectric barrier discharge. The corona discharge appeared as suitable for fungal spore inactivation in water suspension, whereas the barrier discharge inactivated spores on the surface of cultivation agar. Cladosporium sphaerospermu ...
... KEY MESSAGE: Four QTLs and an epistatic interaction were associated with disease severity in response to inoculation with Fusarium oxysporum f. sp. melonis race 1 in a recombinant inbred line population of melon. The USDA Cucumis melo inbred line, MR-1, harbors a wealth of alleles associated with resistance to several major diseases of melon, including powdery mildew, downy mildew, Alternaria leaf ...
... Ambrosia beetles Anisandrus dispar Fabricius and Xylosandrus germanus Blandford (Coleoptera: Curculionidae: Scolytinae) are important pests of hazelnut in Turkey. The beetles can harm the trees by carrying plant diseases in addition to direct damage, by tunneling the trees and farming symbiotic fungi there. In this study, fungal flora (symbiotic, entomopathogenic, plant pathogenic and other fungi) ...
... The genus and species composition of the micromycete complex in the root zone (rhizoplane, rhizosphere and edaphosphere) of sunflower at the beginning of flowering and full maturity stages during its cultivation on leached chernozem was studied. It was established that representatives of the genera Aspergillus, Botrytis, Gliocladium, Fusarium, Paecilomyces, Penicillium, Rhizopus and Trichoderma fo ...
... The in situ effect of microencapsulated 2(3)-tert-butyl-4 hydroxyanisole (BHA) on stored peanuts (Arachis hipogaea) intended for human consumption was evaluated. Peanut were stored unshelled in flexible containers called “big bags” that were made of polypropylene raffia. 100 kg of peanuts were used in each big bag and stored in refrigerated cells (<18 °C) for about 5 months in two different peanut ...
... BACKGROUND: Aromatic plants may be contaminated with a wide range of microorganisms, making them a potential health hazard when infused or added to ready‐to‐eat meals. To ensure safety, the effect of gaseous ozone treatment on the population of aerobic plate counts (APC), hygienic indicators (Escherichia coli, Enterococcus spp. and Enterobacteriaceae) and fungi was investigated for five dried arom ...
Alternaria; blight; conidia; cultivars; disease incidence; disease severity; greenhouses; growth chambers; industry; inoculum; plant growth; sweet potatoes; temperature; South Africa
Abstract:
... Alternaria blight (AB) of sweet potato caused by Alternaria bataticola, is a limiting factor for sweet potato industries in various countries. The disease has been recently reported in South Africa. A thorough literature search indicates that factors influencing the development of AB have not been studied adequately. In the current study wetness duration, inoculum concentration and temperature/wet ...
... Plant endophytes are a group of microorganisms that reside asymptomatically within the healthy living tissue. The diversity and molecular and biochemical characterization of industrial hemp-associated endophytes have not been previously studied. This study explored the abundance and diversity of culturable endophytes residing in petioles, leaves, and seeds of three industrial hemp cultivars, and e ...
... The bio-preservation of fruits using bacteriocinogenic lactic acid bacteria (BLAB) isolated directly from cow dung and curd was an innovative approach. The objectives of this study were to isolate and identify Bacteriocin producing LAB from various curd and cow dung samples, evaluate their antimicrobial effects of BLAB against selected fruits spoiling and pathogenic microorganisms in vitro. LAB wa ...
... Apple leaf blotch has been observed in Nelson and Hawke’s Bay regions of New Zealand over recent years. Fungi from the genus Alternaria were consistently obtained from symptomatic leaf material, and morphological and molecular analysis determined that these isolates belong to the Alternaria arborescens complex. Pathogenicity tests were carried out to determine if these fungi were the causal agents ...
... A simple and rapid method of fluorescence polarization immunoassay (FPIA) for detection of Alternaria mycotoxin tenuazonic acid (TeA) was described. In this study, the tracers TeAH-FITC and TeAH-DTAF were synthesized from hapten 5-(sec-butyl)-3-(1-hydrazonoethyl)-4-hydroxy-1H-pyrrol-2(5H)-one (TeAH) and different fluoresceins isothiocyanate isomer I (FITC) or 5-([4,6-dichlorotriazin-2-yl]amino)flu ...
... In recent years, due to the negative impact of toxigenic mycobiota and of the accumulation of their secondary metabolites in malting barley grains, monitoring the evolution of fungal communities in a certain cultivation area as well as detecting the different mycotoxins present in the raw material prior to malting and brewing processes have become increasingly important. In this study, a survey wa ...
... Housefly (Musca domestica L.) contaminates food by transferring microbes. Fungi carried by houseflies cause postharvest losses by food spoilage produce mycotoxins and spread various infectious diseases in human beings and animals. This study was planned to determine the diversity and frequency of fungal species carried by houseflies and their relation with stored grains. Houseflies in the vicinity ...