Toxicity of mycotoxins produced by four Alternaria species toArtemia salina larvae

1991 ◽  
Vol 7 (1) ◽  
pp. 11-15 ◽  
Author(s):  
P Zajkowski ◽  
J Grabarkiewicz-Szcesna ◽  
R Schmidt
Keyword(s):  
Alternaria Species

scholarly journals Characterization of Alternaria Species Associated with Heart Rot of Pomegranate Fruit

2021 ◽  
Vol 7 (3) ◽  
pp. 172
Author(s):  
Francesco Aloi ◽  
Mario Riolo ◽  
Simona Marianna Sanzani ◽  
Annamaria Mincuzzi ◽  
Antonio Ippolito ◽  
...  
Keyword(s):  
Elongation Factor ◽  
Monomethyl Ether ◽  
Alternariol Monomethyl Ether ◽  
Translation Elongation ◽  
Microscopic Features ◽  
Alternaria Species ◽  
Rot Disease ◽  
Multigene Phylogenetic Analysis ◽  
Pomegranate Fruit

This study was aimed at identifying Alternaria species associated with heart rot disease of pomegranate fruit in southern Italy and characterizing their mycotoxigenic profile. A total of 42 Alternaria isolates were characterized. They were obtained from pomegranate fruits with symptoms of heart rot sampled in Apulia and Sicily and grouped into six distinct morphotypes based on macro- and microscopic features. According to multigene phylogenetic analysis, including internal transcribed spacer (ITS), translation elongation factor 1-α (EF-1α), glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and a SCAR marker (OPA10-2), 38 isolates of morphotypes 1 to 5 were identified as Alternaria alternata, while isolates of morphotype 6, all from Sicily, clustered within the Alternaria arborescens species complex. In particular, isolates of morphotype 1, the most numerous, clustered with the ex-type isolate of A. alternata, proving to belong to A. alternata. No difference in pathogenicity on pomegranate fruits was found between isolates of A. alternata and A. arborescens and among A. alternata isolates of different morphotypes. The toxigenic profile of isolates varied greatly: in vitro, all 42 isolates produced tenuazonic acid and most of them other mycotoxins, including alternariol, alternariol monomethyl ether, altenuene and tentoxin.

scholarly journals Antimycotoxigenic Activity of Beetroot Extracts against Altenaria alternata Mycotoxins on Potato Crop

2021 ◽  
Vol 11 (9) ◽  
pp. 4239
Author(s):  
Nesrine H. Youssef ◽  
Sameer H. Qari ◽  
Said I. Behiry ◽  
Eldessoky S. Dessoky ◽  
Ehab I. El-Hallous ◽  
...  
Keyword(s):  
Potato Crop ◽  
Reduction Rate ◽  
Acid Methyl Ester ◽  
Ethanol Extract ◽  
Monomethyl Ether ◽  
Morphological Identification ◽  
Hexadecanoic Acid ◽  
Alternariol Monomethyl Ether ◽  
Alternaria Species ◽  
Main Components

Alternaria species, mainly air-borne fungi, affect potato plants, causing black spots symptoms. Morphological identification, pathogenicity assessment, and internal transcribed spacer (ITS) molecular identification confirmed that all isolates were Alternaria alternata. The annotated sequences were deposited in GenBank under accession numbers MN592771–MN592777. HPLC analysis revealed that the fungal isolates KH3 (133,200 ng/g) and NO3 (212,000 ng/g) produced higher levels of tenuazonic acid (TeA) and alternariol monomethyl ether (AME), respectively. Beet ethanol extract (BEE) and beet methanol extract (BME) at different concentrations were used as antimycotoxins. BME decreased the production of mycotoxins by 66.99–99.79%. The highest TeA reduction rate (99.39%) was reported in the KH3 isolate with 150 µg/mL BME treatment. In comparison, the most effective AME reduction rate (99.79%) was shown in the NO3 isolate with 150 µg/mL BME treatment. In the same way, BEE application resulted in 95.60–99.91% mycotoxin reduction. The highest TeA reduction rate (99.91%) was reported in the KH3 isolate with 150 µg/mL BEE treatment, while the greatest AME reduction rate (99.68%) was shown in the Alam1 isolate with 75 µg/mL BEE treatment. GC-MS analysis showed that the main constituent in BME was the antioxidant compound 1-dodecanamine, n,n-dimethyl with a peak area of 43.75%. In contrast, oxirane, methyl- (23.22%); hexadecanoic acid, methyl ester (10.72%); and n-hexadecanoic acid (7.32%) were the main components in BEE found by GC-MS. They are probably antimicrobial molecules and have an effect on the mycotoxin in general. To our knowledge, this is the first study describing the antimycotoxigenic activity of beet extracts against A. alternata mycotoxins-contaminated potato crops in Egypt, aimed to manage and save the environment.

Alternaria species associated with cladode brown spot in cactus prickly pear (Nopalea cochenillifera)

2021 ◽  
Vol 160 (1) ◽  
pp. 215-226
Author(s):  
Nayana Bruschi Infante ◽  
Gilberlan Costa Santos da Silva ◽  
Frederico Monteiro Feijó ◽  
Sarah Jacqueline Cavalcanti da Silva ◽  
Iraildes Pereira Assunção ◽  
...  
Keyword(s):  
Prickly Pear ◽  
Brown Spot ◽  
Alternaria Species ◽  
Nopalea Cochenillifera

scholarly journals Ionic liquids as potentially new antifungal agents against Alternaria species

RSC Advances ◽  
2020 ◽  
Vol 10 (38) ◽  
pp. 22318-22323
Author(s):  
Maja Karaman ◽  
Milan Vraneš ◽  
Aleksandar Tot ◽  
Snežana Papović ◽  
Dragana Miljaković ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Antifungal Agents ◽  
Antifungal Activities ◽  
Alternaria Species

The objective of this study was to examine the in vitro antifungal activities of 18 newly synthesized ionic liquids (ILs) against three Alternaria strains: A. padwickii, A. dauci and A. linicola.

Phaeohyphomycosis due to Alternaria species in transplant recipients

2009 ◽  
Vol 12 (3) ◽  
pp. 242-250 ◽  
Author(s):  
R.D. Boyce ◽  
P.J. Deziel ◽  
C.C. Otley ◽  
M.P. Wilhelm ◽  
A.J. Eid ◽  
...  
Keyword(s):  
Transplant Recipients ◽  
Alternaria Species

scholarly journals Distribution frequency and incidence of seed-borne pathogens of some cereals and industrial crops in Serbia

2012 ◽  
Vol 27 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Jelena Levic ◽  
Slavica Stankоvic ◽  
Vesna Krnjaja ◽  
Aleksandra Bocarov-Stancic ◽  
Dragica Ivanovic
Keyword(s):  
Plant Species ◽  
Negative Correlation ◽  
Fusarium Species ◽  
Significant Negative Correlation ◽  
Soybean Seeds ◽  
Sunflower Seeds ◽  
Maize Seeds ◽  
Alternaria Species ◽  
Penicillium Spp ◽  
Distribution Frequency

A total of 41 species of fungi were isolated from seed samples of barley, maize, soybean, and sunflower collected at different locations in Serbia. The majority of detected species occurred on barley (35 of 41 species or 87.8%) comparing to soybean (17 of 41 species or 41.5%), sunflower (16 of 41 species or 39.0%) and maize (15 of 41 species or 36.9%). Species belonging to genera Alternaria, Chaetomium, Epicoccum, Fusarium, Penicillium and Rhizopus were present on seeds of all four plant species. Alternaria species were dominant on soybean, barley and sunflower seeds (85.7%, 84.7% and 76.9%). F. verticillioides and Penicillium spp. were mainly isolated from maize seeds (100 and 92.3% respectively), while other species were isolated up to 38.5% (Chaetomium spp. and Rhizopus spp.). F. graminearum, F. proliferatum, F. poae and F. sporotrichioides were the most common Fusarium species isolated from barley (51.1-93.3%), while on the soybean seeds F. oxysporum (71.4%), F. semitectum (57.1%) and F. sporotrichioides (57.1%) were prevalent. Frequency of Fusarium species on sunflower seeds varied from 7% (F. equiseti, F. graminearum, F. proliferatum and F. subglutinans) to 15.4% (F. verticillioides). Statistically significant negative correlation (r = -0.678

scholarly journals The Biological Activity of Alternaria Species

2018 ◽  
Vol 80 (4) ◽  
pp. 78-87 ◽  
Author(s):  
K.S. Tsyganenko ◽  
◽  
Ya.I. Savchuk ◽  
L.T. Nakonechna ◽  
I.M. Kurchenko ◽  
...  
Keyword(s):  
Biological Activity ◽  
Alternaria Species

Keratomycosis Due to an Alternaria Species

1975 ◽  
Vol 79 (5) ◽  
pp. 881-883 ◽  
Author(s):  
Paul Azar ◽  
James V. Aquavella ◽  
Richard S. Smith
Keyword(s):  
Alternaria Species
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