Isolation, identification and selection of antagonistic yeast against Alternaria alternata infection and tenuazonic acid production in wine grapes from Argentina

2018 ◽  
Vol 266 ◽  
pp. 14-20 ◽  
Author(s):  
Luciana P. Prendes ◽  
María G. Merín ◽  
Ariel R. Fontana ◽  
Rubén A. Bottini ◽  
María L. Ramirez ◽  
...  
Keyword(s):  
Alternaria Alternata ◽  
Acid Production ◽  
Tenuazonic Acid ◽  
Wine Grapes ◽  
Antagonistic Yeast ◽  
Selection Of

Characterization and Selection of LAB Isolated from Inner Mongolia Traditional Meat Sausages

2012 ◽  
Vol 554-556 ◽  
pp. 1400-1405
Author(s):  
Yan Duan ◽  
Wen Rui Guo ◽  
Lin Su ◽  
Yue Ying Guo ◽  
Ye Jin
Keyword(s):  
Biogenic Amine ◽  
Inner Mongolia ◽  
Acid Production ◽  
Starter Culture ◽  
Technological Properties ◽  
Lactobacillus Curvatus ◽  
Biochemical Tests ◽  
Gram Positive ◽  
Hydrolysis Of ◽  
Selection Of

A total of 69 gram-positive, catalase-negative strains isolated from Inner Mongolia traditional meat sausages were characterized in respect to their technological properties, including acid production, salt and nitrite tolerance, gas, slime and H2S production, hydrolysis of arginine and biogenic amine production. All of the isolated strains decrease the pH below 5.0 after 24h of cultivation. All isolates are able to grow with 6.5% NaCl or with 150mg L-1NaNO2and 51 isolates are able to grow with 10% NaCl. All isolates don’t produce gas and slime. 54 isolates don’t produce H2S. 23 isolated strains don’t produce NH3 from arginine, and 40 isolates don’t produce biogenic amine. Consolidation of these results, 8 strains show the best technological properties to be used as starter culture for sausage production. The bacterial selected are then subjected to biochemical tests using the API 50 CH and they are identified as 6 Lactobacillus planarum and 2 Lactobacillus curvatus.

scholarly journals Tenuazonic acid: a promising antitubercular principle from Alternaria alternate

2011 ◽  
Vol 2 (1) ◽  
pp. 17 ◽  
Author(s):  
Visalakchi Sonaimuthu ◽  
Swati Parihar ◽  
Jay Prakash Thakur ◽  
Suaib Luqman ◽  
Dharmendra Saikia ◽  
...  
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Alternaria Alternata ◽  
Active Metabolite ◽  
Antitubercular Activity ◽  
Model System ◽  
Human Erythrocytes ◽  
Tenuazonic Acid ◽  
Fungal Metabolite ◽  
Osmotic Hemolysis ◽  
Alternaria Alternate

Bioactivity guided isolation of dichloromethane extract of <em>Alternaria alternata</em> identified tenuazonic acid (1) as potentially active against <em>Mycobacterium tuberculosis</em> H37Rv, MIC at 250 μg/mL concentration. This active metabolite 1, was also evaluated for osmotic hemolysis using the erythrocyte as a model system. It was observed that this fungal metabolite showing antitubercular activity exhibited concentration dependent toxicity to human erythrocytes.

scholarly journals Alternaria Late Blight (Alternaria alternata) Resistance in Pistachio (Pistacia vera) and Selection of Resistant Genotypes

2001 ◽  
Vol 126 (4) ◽  
pp. 481-485 ◽  
Author(s):  
Chih-Cheng T. Chao ◽  
Dan E. Parfitt ◽  
Themis J. Michailides
Keyword(s):  
Late Blight ◽  
Alternaria Alternata ◽  
Pistacia Vera ◽  
Narrow Sense ◽  
Cultivar Selection ◽  
Resistant Genotypes ◽  
Selection Of

Pistachio (Pistacia vera L.) progeny were evaluated at two locations in California for resistance to alternaria late blight caused by Alternaria alternata (Fries) Keissler in 1995 and 1997. Large differences in alternaria late blight infection among seedlings were observed. Narrow sense heritabilities based on half-sib analysis of 20 open pollinated families were 0.48 and 0.11 at Kearney Agricultural Center in 1995 and 1997, respectively, and 0.56 and 0.54 at the Wolfskill Experimental Orchard near Davis in 1995 and 1997, respectively. Differences among families to alternaria late blight infection were highly significant and associated with the female parents. Fifty-eight highly resistant seedlings were identified for future cultivar selection efforts.

scholarly journals Selection of oleaginous yeasts for fatty acid production

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Dennis Lamers ◽  
Nick van Biezen ◽  
Dirk Martens ◽  
Linda Peters ◽  
Eric van de Zilver ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Acid Production ◽  
Oleaginous Yeasts ◽  
Fatty Acid Production ◽  
Selection Of

scholarly journals Mycovirus-Induced Tenuazonic Acid Production in a Rice Blast Fungus Magnaporthe oryzae

2020 ◽  
Vol 11 ◽  
Author(s):  
Akihiro Ninomiya ◽  
Syun-ichi Urayama ◽  
Rei Suo ◽  
Shiro Itoi ◽  
Shin-ichi Fuji ◽  
...  
Keyword(s):  
Magnaporthe Oryzae ◽  
Acid Production ◽  
Rice Blast ◽  
Rice Blast Fungus ◽  
Tenuazonic Acid ◽  
Blast Fungus

Incidence of Mycotoxigenic Alternaria alternata and Aspergillus flavus in Barley

1993 ◽  
Vol 56 (3) ◽  
pp. 246-248 ◽  
Author(s):  
V. SANCHIS ◽  
A. SANCLEMENTE ◽  
J. USALL ◽  
I. VIÑAS
Keyword(s):  
Aspergillus Flavus ◽  
Alternaria Alternata ◽  
Monomethyl Ether ◽  
Fungal Species ◽  
Tenuazonic Acid ◽  
Alternariol Monomethyl Ether ◽  
Penicillium Spp

The predominant fungal species present in 60 samples of barley collected in Spain were Alternaria alternata, Penicillium spp. and Aspergillus flavus. Of the 176 Alternaria isolates examined, 88.6% produced tenuazonic acid, 15.3% produced alternariol, and 9% produced alternariol monomethyl ether. Only 6% of the 190 isolates of A. flavus produced aflatoxin.

Alternaria toxins in weather-damaged wheat and sorghum in the 1995-1996 Australian harvest

1997 ◽  
Vol 48 (8) ◽  
pp. 1249 ◽  
Author(s):  
D. J. Webley ◽  
K. L. Jackson ◽  
J. D. Mullins ◽  
A. D. Hocking ◽  
J. I. Pitt
Keyword(s):  
Alternaria Alternata ◽  
Primary Infection ◽  
New South ◽  
Geographical Location ◽  
Monomethyl Ether ◽  
The Other ◽  
Tenuazonic Acid ◽  
Alternariol Monomethyl Ether ◽  
South Wales ◽  
Low Levels

Weather-damaged wheat from northern New South Wales in 1995-96 was heavily infected with the fungus Alternaria alternata. The mycotoxins tenuazonic acid, alternariol, and alternariol monomethyl ether were detected at low levels which corresponded with the degree of A. alternata infection and the geographical location. Sorghum and undamaged wheat from the same region also showed moderate levels of A. alternata infection and low levels of tenuazonic acid but none of the other toxins. These mycotoxins were not found in weather-damaged wheat from other areas of Australia where the primary infection was by A. infectoria rather than A. alternata.

Tenuazonic acid production is dispensable for virulence, but its biosynthetic gene expression pattern is associated with the infection of Pyricularia oryzae

2021 ◽  
Author(s):  
Takeshi Kashiwa ◽  
Takayuki Motoyama ◽  
Kazuko Yoshida ◽  
Choong-Soo Yun ◽  
Hiroyuki Osada
Keyword(s):  
Gene Expression ◽  
Expression Pattern ◽  
Acid Production ◽  
Rice Blast ◽  
Gene Expression Pattern ◽  
Rice Blast Fungus ◽  
Pyricularia Oryzae ◽  
Biosynthetic Gene ◽  
Tenuazonic Acid ◽  
Biosynthetic Gene Expression

Abstract Tenuazonic acid (TeA) is a toxin produced by the rice blast fungus Pyricularia oryzae. Although knockout of the TeA biosynthetic gene TAS1 did not affect the virulence of P. oryzae, constitutive TAS1 expression suppressed its infection. TAS1 expression was induced alongside transition of P. oryzae infection behavior. The results suggested that controlling TeA biosynthesis is important for P. oryzae infection.

Sign in / Sign up

Export Citation Format

Share Document