Einfluß von Epicoccum nigrum, Alternaria alternata, Mucor racemosus und Ulocladium chartarum auf die Protozoenpopulation im Pansen des Rindes (in vitro)

2000 ◽  
Vol 16 (S2) ◽  
pp. 179-182
Author(s):  
A Höhling ◽  
M Höltershinken ◽  
P Hoffmann ◽  
D Brunklaus ◽  
H Scholz
Keyword(s):  
Alternaria Alternata ◽  
Mucor Racemosus ◽  
Epicoccum Nigrum

scholarly journals Antimicrobial and Antibiofilm Activities of the Fungal Metabolites Isolated from the Marine Endophytes Epicoccum nigrum M13 and Alternaria alternata 13A

Marine Drugs ◽  
2021 ◽  
Vol 19 (4) ◽  
pp. 232
Author(s):  
M. Mallique Qader ◽  
Ahmed A. Hamed ◽  
Sylvia Soldatou ◽  
Mohamed Abdelraof ◽  
Mohamed E. Elawady ◽  
...  
Keyword(s):  
Alternaria Alternata ◽  
Antibacterial Effect ◽  
Saline Lake ◽  
2D Nmr ◽  
Fungal Metabolites ◽  
Gram Positive ◽  
Gram Negative ◽  
Epicoccum Nigrum ◽  
Wadi El Natrun ◽  
New Compounds

Epicotripeptin (1), a new cyclic tripeptide along with four known cyclic dipeptides (2–5) and one acetamide derivative (6) were isolated from seagrass-associated endophytic fungus Epicoccum nigrum M13 recovered from the Red Sea. Additionally, two new compounds, cyclodidepsipeptide phragamide A (7) and trioxobutanamide derivative phragamide B (8), together with eight known compounds (9–16), were isolated from plant-derived endophyte Alternaria alternata 13A collected from a saline lake of Wadi El Natrun depression in the Sahara Desert. The structures of the isolated compounds were determined based on the 1D and 2D NMR spectroscopic data, HRESIMS data, and a comparison with the reported literature. The absolute configurations of 1 and 7 were established by advanced Marfey’s and Mosher’s ester analyses. The antimicrobial screening indicated that seven of the tested compounds exhibited considerable (MIC range of 2.5–5 µg/mL) to moderate (10–20 µg/mL) antibacterial effect against the tested Gram-positive strains and moderate to weak (10–30 µg/mL) antibacterial effect against Gram-negative strains. Most of the compounds exhibited weak or no activity against the tested Gram-negative strains. On the other hand, four of the tested compounds showed considerable antibiofilm effects against biofilm forming Gram-positive and Gram-negative strains.

Effect of Copper Oxide and Silver Nanoparticles on the Development of Tolerance to Alternaria alternata in Poplar in Vitro Clones

2021 ◽  
Vol 16 (2) ◽  
pp. 231-238
Author(s):  
T. A. Grodetskaia ◽  
O. A. Fedorova ◽  
P. M. Evlakov ◽  
O. Yu. Baranov ◽  
O. V. Zakharova ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Copper Oxide ◽  
Alternaria Alternata ◽  
Effect Of Copper ◽  
Development Of Tolerance

scholarly journals Microbial Transformations of Isophorone by Alternaria alternata and Neurospora crassa

2013 ◽  
Vol 8 (1) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Ismail Kiran ◽  
Özge Özşen ◽  
Turgay Çelik ◽  
Semra İlhan ◽  
Bükay Yenice Gürsu ◽  
...  
Keyword(s):  
Neurospora Crassa ◽  
Alternaria Alternata ◽  
Antimicrobial Agents ◽  
Antimicrobial Activities ◽  
Anti Oxidant ◽  
Agar Dilution ◽  
Important Field ◽  
Pharmacology And Toxicology ◽  
Derivatives Of

Isophorone (3,5,5-trimethyl-2-cyclohexen-1-one), a monoterpene, and the structurally related 1,8-cineole and camphor, have demonstrated a protective effect against cancer, biological activity against a variety of microorganisms, and anti-oxidant properties. The derivatization of isophorone is, therefore, an important field of xenobiochemistry, pharmacology and toxicology. The aim of this study was to obtain derivatives of isophorone through microbial biotransformation and evaluate the biotransformation metabolites as potential antimicrobial agents. Incubation of isophorone with the fungi Alternaria alternata and Neurospora crassa afforded 4α-hydroxy- and 7-hydroxy-isophorone as transformation metabolites. The antimicrobial activities of isophorone and the metabolites were evaluated in vitro both by using agar dilution and microdilution methods. However, no significant antibacterial activity was observed when compared with those of standard substances.

scholarly journals Alternaria leaf spot of broccoli caused by Alternaria alternata in Bangladesh

2021 ◽  
Author(s):  
Sayma T. Nira ◽  
Md. Farhad Hossain ◽  
Nur Uddin Mahmud ◽  
Oliul Hassan ◽  
Md. Tofazzal Islam ◽  
...  
Keyword(s):  
Alternaria Alternata ◽  
Leaf Spot ◽  
Maximum Growth ◽  
Pathogenicity Test ◽  
Culture Studies ◽  
Alternaria Leaf Spot ◽  
Cultural Methods ◽  
Molecular Phylogenetic ◽  
Alternaria Sp

  This study aimed to isolate and characterise the pathogen associated with Alternaria leaf spot on broccoli and to evaluate the inhibitory effects of fungicides against it. We isolated and identified the fungal pathogen as Alternaria sp. using morphological and cultural methods. Based on the aligned sequences of the internal transcribed spacer (ITS) and molecular phylogenetic analysis by the neighbour-joining method, the isolates (Ab1 and Ab2) were confirmed as Alternaria alternata. The conidia of the isolates were dark brown, cylindrical, obclavate to muriform. The conidiophores were olivaceous brown, septate, and branched. The conidial morphology of the isolates ranged from 52.4–92.4 × 10–20 μm with 2–6 transverse and 0–3 longitudinal septa. Both isolates yielded positive results in the pathogenicity test on broccoli leaves by developing brown and circular spots with concentric rings on the leaves surrounded by yellow halos. The culture studies revealed that the maximum growth of the pathogen was obtained at 30 °C and pH 6.0. Tilt 250 WC showed the highest potential in suppressing the mycelial growth of the A. alternata in vitro at a concentration as low as 50 µg/mL. The results from this study contributed to the positive identification of the pathogen and characterised A. alternata as a destructive pathogen of broccoli which may be successfully controlled by the fungicide Tilt.  

Antifungal Activities of Some Indole Derivatives

2010 ◽  
Vol 65 (7-8) ◽  
pp. 437-439 ◽  
Author(s):  
Hui Xu ◽  
Qin Wang ◽  
Wen-Bin Yang
Keyword(s):  
Fusarium Oxysporum ◽  
Fusarium Graminearum ◽  
Broad Spectrum ◽  
Alternaria Alternata ◽  
Phytopathogenic Fungi ◽  
Pyricularia Oryzae ◽  
Indole Derivatives ◽  
Alternaria Brassicae ◽  
Antifungal Activities

Nine indole derivatives were evaluated in vitro against Fusarium graminearum, Alternaria alternata, Helminthosporium sorokinianum, Pyricularia oryzae, Fusarium oxysporum f. sp. vasinfectum, Fusarium oxysporum f. sp. cucumarinum, and Alternaria brassicae. Most of the compounds were found to possess antifungal activities. Especially compounds 2, 5, 8, and 9 exhibited broad-spectrum antifungal activities against the above-mentioned seven phytopathogenic fungi, and showed more potent activities than hymexazole, a commercial agricultural fungicide.

Over-expression of GbRac1 gene in transgenic tobacco enhances disease resistance to Alternaria alternata in vitro

2005 ◽  
Vol 2 (2) ◽  
pp. 73-77 ◽  
Author(s):  
Li Wei-Min ◽  
Wang Zhi-Xing ◽  
Jia Shi-Rong
Keyword(s):  
Disease Resistance ◽  
Transgenic Plants ◽  
Alternaria Alternata ◽  
Northern Blot Analysis ◽  
Challenge Test ◽  
Constitutive Expression ◽  
Degenerate Primers ◽  
Over Expression ◽  
Detached Leaves

AbstractGbRac1 gene was cloned from Gossypium barbadense with degenerate primers and 3′-RACE. Northern blot analysis indicated that GbRac1 mRNA was expressed abundantly in G. barbadense seedlings inoculated with Verticillium dehliae compared with mock-inoculated plants. A plant constitutive expression vector pRac harbouring GbRac1 gene was constructed and leaf discs of tobacco (Nicotiana tabacum L. cv. NC89) were transformed with pRac by Agrobacterium-mediated transformation. Disease challenge test of detached leaves of the transgenic plants by inoculation with Alternaria alternata showed that resistance was enhanced dramatically compared with the non-transgenic plants. Results suggest that GbRac1 gene might have potential application in the genetic engineering of plants with enhanced disease resistance.

Double-blind, placebo-controlled Alternaria alternata immunotherapy: in vivo and in vitro parameters

2007 ◽  
Vol 0 (0) ◽  
pp. 070727052443003-??? ◽  
Author(s):  
María Teresa Lizaso ◽  
Ana Isabel Tabar ◽  
Blanca Esther García ◽  
Belen Gómez ◽  
Jaime Algorta ◽  
...  
Keyword(s):  
Alternaria Alternata ◽  
Double Blind ◽  
Double Blind Placebo

In vitro and in vivo control of Alternaria alternata in cherry tomato by essential oil from Laurus nobilis of Chinese origin

2013 ◽  
Vol 94 (7) ◽  
pp. 1403-1408 ◽  
Author(s):  
Shixiang Xu ◽  
Fujie Yan ◽  
Zhendan Ni ◽  
Qianru Chen ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Essential Oil ◽  
Alternaria Alternata ◽  
Cherry Tomato ◽  
Laurus Nobilis ◽  
Chinese Origin
Sign in / Sign up

Export Citation Format

Share Document