Bibliographies thématiques / C. cladosporoide

Littérature scientifique sur le sujet « C. cladosporoide »

Auteur : Grafiati
Publié le 10 mars 2023

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Articles de revues sur le sujet "C. cladosporoide"

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Tirumale, Sharmila, et Nazir Wani. « BIOLOGICAL CONTROL OF PHYTOPATHOGENIC FUNGI USING DIFFERENT EXTRACTS OF CHAETOMIUM CUPREUM ». Asian Journal of Pharmaceutical and Clinical Research 11, no 9 (7 septembre 2018) : 328. http://dx.doi.org/10.22159/ajpcr.2018.v11i9.26836.

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Objective: This study evaluated the Chaetomium cupreum extracts as biocontrol agents against four plant pathogenic fungi (Cladosporium cladosporioides, Fusarium oxysporum, Phomopsis azadirachtae, and Rhizoctonia solani).Method: The antifungal activity of n-butanol and ethyl acetate extracts of C. cupreum was evaluated against plant pathogenic fungi using food poison method.Result: In n-butanol extract, the percentage inhibition of mycelial growth against C. cladosporoides was 88.3±0.1, F. oxysporum was 59.4±0.2, R. solani was 56.2±0.9, and P. azadirachtae was 52.0±0.1at 0.25 mg/ml, respectively. In ethyl acetate extract, the percentage inhibition of mycelial growth against C. cladosporoides was 86.0±0.5, F. oxysporum was 66.4±0.1, P. azadirachtae was 55.2±0.9, and R. solani was 52.0±0.1 at 0.25 mg/ml, respectively.Conclusion: It was found that n-butanol extract is more effective than ethyl acetate extract of C. cupreum. Future studies will focus on the purification and characterization of compounds of C. cupreum and their biocontrol capacity with the mechanism for plant pathological applications.
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Miljakovic, Dragana, Dragana Milosevic, Maja Ignjatov, Jelena Marinkovic, Gordana Tamindzic, Branislava Tintor et Zorica Nikolic. « Screening of Bacillus spp. as potential biocontrol agents against sunflower pathogens ». Zbornik Matice srpske za prirodne nauke, no 143 (2022) : 65–72. http://dx.doi.org/10.2298/zmspn2243065m.

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Bacillus spp. are well known to protect plants from seed or soil-borne pathogens by the synthesis of various metabolites with antimicrobial activity, such as hy?drolytic enzymes and antibiotics. This study aimed to select the most effective Bacillus spp. from a group of ten antagonistic strains by antifungal activity assay. Bacillus strains were primarily isolated from the soil and identified as B. safensis, B. pumilus and B. subtilis by 16S rDNA sequencing. The four analyzed fungi: Macrophomina phaseolina, Alternaria alternata, Cladosporium cladosporoides, and Sclerotinia sclerotiorum, were obtained from sunflower seeds and identified using PCR analysis and primers specific for ITS region. The antifungal activity of bacterial strains was examined in a dual plate assay. Bacillus spp. demonstrated the highest antagonism against S. sclerotiorum, followed by C. cladosporoides, M. phaseolina, and A. alternata, with an average percentage of growth inhibition (PGI) of 77%, 70%, 64% and 59%, respectively. Overall, Bacillus spp. included in this study demonstrated a rather strong biocontrol potential, although the effect of particular strain varied depending on the tested fungi. The highest antagonistic effect toward M. phaseolina and A. alternata was exhibited by B. safensis B2 and B. pumilus B3. B. pumilus B11 and B. subtilis B32 were the most efficient against C. cladosporoides, whereas B. pumilus B3 and B. subtilis B7 had the highest antifungal activity against S. sclerotiorum. Findings point to the fact that the most effective Bacillus spp. could be used as potential biocontrol agents for improving plant health and productivity.
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Hong, Soon Gyu, et Barry M. Pryor. « Development of selective media for the isolation and enumeration of Alternaria species from soil and plant debris ». Canadian Journal of Microbiology 50, no 7 (1 juillet 2004) : 461–68. http://dx.doi.org/10.1139/w04-036.

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A new semi-selective medium, acidified weak potato-dextrose agar (AWPDA) with Mertect (active ingredient: thiabendazole), was developed for the isolation and enumeration of Alternaria species from samples of soil and plant debris. The medium was selected based on growth inhibition tests against Alternaria and several other commonly encountered saprobic fungi utilizing three antifungal agents, Botran (active ingredient: dichloran), Bayleton (active ingredient: triadimefon), and Mertect, and two basal media, acidified potato-dextrose agar (APDA) and AWPDA. Botran inhibited growth of Rhizopus stolonifer moderately, but had little effect on Cladosporium cladosporoides, Fusarium oxysporum, Penicillium chrysogenum, or Trichoderma harzianum. Bayleton inhibited growth of R. stolonifer and C. cladosporoides severely, and inhibited growth of F. oxysporum, P. chrysogenum, and T. harzianum moderately. Mertect inhibited growth of C. cladosporoides, F. oxysporum, P. chrysogenum, and T. harzianum completely, but had little or moderate effect on R. stolonifer. All three antifungal agents inhibited growth of Alternaria species slightly or moderately. The combination of Bayleton and Mertect inhibited growth of all fungi severely. A comparison of recovery rates of Alternaria from soil and plant debris samples on AWPDA with Mertect and weak potato-dextrose agar (WPDA) revealed that Alternaria spp. accounted for 63.6%–81.0% of recovered fungal isolates on AWPDA with Mertect as compared to 0.6%–2.7% of recovered isolates on WPDA. The AWPDA medium with Mertect exhibited superior selective growth of Alternaria species from samples of soil and plant debris, and will be useful in studies where the recovery and enumeration of Alternaria species is necessary.Key words: Alternaria, AWPDA, selective media, sporulation, Mertect.
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Yeasmin, Fatema, et Shamim Shamsi. « Phylloplane mycoflora of Gerbera spp. and their Pathogenic potentiality ». Journal of Bangladesh Academy of Sciences 37, no 2 (5 janvier 2014) : 211–17. http://dx.doi.org/10.3329/jbas.v37i2.17562.

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Two types of symptoms, blight and anthracnose, were recorded on two species of Gerbera viz. Gerbera aurantiaca L. and Gerbera viridifolia L. The most common fungal species isolated from Gerbera spp. were Alternaria citrii, A. tennuisssima, Aspergillus flavus, A. fumigatus, A. niger, A. terreus, Bipolaris hawaiiensis, Chaetomella raphigera, Cladosporium cladosporoides, Colletotrichum capsici, C. coffeanum, C. dematium, C. gleosporioides, C. lindemuthianum, C. musae, C. orbiculare, Colletorichum sp.1, Colletotrichum sp.2, Colletotrichum sp.3, Colletotrichum sp.4, Curvularia clavata, C. lunata, Fusarium nivale, F. semitectum, Phomopsis sp., Penicillium sp., Pestalotia sp., Rhizopus stolonifer, Trichoderma viride, one cleistothecial ascomycetes and one sterile fungus. The frequency percentage of association of Colletotrichum spp. with Gerbera spp. was higher than any other fungi. Bipolaris hawaiiensis is a new record for Bangladesh. Among the isolated fungi Alternaria citrii, A. tennuissima, Colletotrichum capcisi, C. dematium, C. coffeanum and Curvularia clavata were found to be pathogenic to Gerbera plant. DOI: http://dx.doi.org/10.3329/jbas.v37i2.17562 Journal of Bangladesh Academy of Sciences, Vol. 37, No. 2, 211-217, 2013
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Celia, Murciano. « Pathogen identification and control of sooty spot caused by Cladosporium ramotenellum, appearing on fresh easy peeler mandarins from Perú ». Journal of Plant Science and Phytopathology 5, no 2 (2021) : 044–52. http://dx.doi.org/10.29328/journal.jpsp.1001059.

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During the 2018 season, superficial dry and firm black spots, where sometimes an aerial mycelium developed, appeared on the rind of easy peeler mandarins causing high economic losses in fresh citrus exports from Perú. In this work, we have identified the causal agent, a species of Cladosporium not previously reported as a citrus pathogen. The pathogen was isolated from rind lesions of affected fruit and was identified by sequencing as Cladosporium ramotenellum; and fulfilment of Koch postulates was proven. This species was present on the surface of immature fruit in the groves, indicating that the infection is likely initiated before harvest. Cladosporium ramotenellum is resistant to the postharvest fungicides imazalil, pyrimethanil, and thiabendazole, but sensitive to propiconazole, prochloraz, and ortho-phenylphenol. We designed a postharvest industrial treatment to decrease the Cladosporium sp. load on the fruit surface that limited the incidence of infection and reduced the postharvest losses caused by the fungus. Although this species is quite ubiquitous, this is the first description of C. ramotenellum causing decay of citrus fruit, being the symptoms of this disease similar to the ones described previously and caused by Cladosporium cladosporoides in cv. Satsuma mandarins from Japan.
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Jabeen, Khajista, Zara Naeem, Sumera Iqbal et Muhammad Khalid Saeed. « PHYTOCHMICAL ANALYSIS AND ANTIFUNGAL POTENTIAL OF SORGHUM HELEPENSE L. FOR THE MANAGEMENT OF OCHRATOXIGENIC FUNGI ». JOURNAL OF WEED SCIENCE RESEARCH 27, no 4 (31 décembre 2021) : 505–12. http://dx.doi.org/10.28941/pjwsr.v27i4.1008.

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Ochratoxigenic fungal species are a major cause of various infections in plants and posed a serious threat to their consumers,including humans and animals. In the current study the objective was to examine the in vitro efficacy of different concentrations of leaves methanolic extract of S. helepense L. (Pers.) against target pathogenic ochratoxin producing fungal species (Trichoderma viride Pers., Trichoderma harzianum Rifai. and Cladosporium cladosporioides (Fresen.) G.A. de Vries).For this purpose, different concentrations viz. 2%, 4%, 6%, 8% and 10% of leaf methanolic extract were prepared and tested for antifungal potential in a completely randomized design (CRD). Results revealed that all the applied concentrations of S. helepense inhibited the growth of all the tested fungal strain. Maximum growth inhibition was observed in 2% of concentration of methanolic extract of S. helepense in case of C. cladosporoides i.e. 84%. On the other hand minimum reduction was observed in 4% of concentration of methanolic extract of S. helepense against T. viride as compared to control. The phytochemical analysis was also conducted to evaluate that which chemical entities were present that account for antifungal potency of methanolic extract of S. helepense. Results of phytochemical analysis revealed the occurrence of saponins, alkaloids, coumarins, flavonoids and tannins while the plant is devoid of terpenoids, phlobatanins and glycosides respectively. Hence it can be concluded that the methanolic leaf extract of the tested plant proved to be beneficial for inhibiting the growth of test ochratoxigenic fungi.
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Kalode, S. N., et L. P. Dalal. « ISOLATION AND IDENTIFICATION OF VEGETABLE MARKET AEROMYCOFLORA FROM THE ENVIRONMENT OF WARDHA CITY ». INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH, 1 septembre 2021, 66–68. http://dx.doi.org/10.36106/ijsr/3835006.

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Airborne fungi behaves as an indicators of the levels of atmospheric biopollutants. The study was carried out during the period of March 2017- February 2018. The fungi were isolated from the area of vegetable market of Wardha city. The exposed petriplate method were used for the isolation of fungi from morning and evening hours and humidity and temperatures were recorded regularly. Total 835 and 800 fungal colonies were recorded during one-year study period and they were belonging to 95 fungal species. The fungus Cladosporium cladosporoides, C. herbarum, A.niger ,A. flavus, A. nidulans, A.fumigatus was the prevalent isolated types from vegetable market area of Wardha city from morning and evening hours. Maximum percentage contribution of fungal colonies was observed at morning and evening hours during rainy (41.43%), (40.05%) and winter season (39.64%), (41.16%) followed by summer season (18.92%), (18.03) respectively
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Thèses sur le sujet "C. cladosporoide"

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VIZZUSO, CELESTE. « Interazioni antagonistiche in vitro fra Phomopsis quercina e funghi endofitici di specie quercine ». Doctoral thesis, 2007. http://hdl.handle.net/2158/572497.

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