Transcriptome response of Acetobacter pasteurianus Ab3 to high acetic acid stress during vinegar production

2020 ◽  
Vol 104 (24) ◽  
pp. 10585-10599
Author(s):  
Kai Xia ◽  
Chengcheng Han ◽  
Jun Xu ◽  
Xinle Liang
Keyword(s):  
Acetic Acid ◽  
Acid Stress ◽  
Acetobacter Pasteurianus ◽  
Transcriptome Response

Investigation of lipid profile in Acetobacter pasteurianus Ab3 against acetic acid stress during vinegar production

Extremophiles ◽  
2020 ◽  
Vol 24 (6) ◽  
pp. 909-922
Author(s):  
Chengcheng Han ◽  
Kai Xia ◽  
Jieqiong Yang ◽  
Hong Zhang ◽  
Matthew P. DeLisa ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Lipid Profile ◽  
Acid Stress ◽  
Acetobacter Pasteurianus

scholarly journals Sphingolipid biosynthesis upregulation by TOR complex 2–Ypk1 signaling during yeast adaptive response to acetic acid stress

2016 ◽  
Vol 473 (23) ◽  
pp. 4311-4325 ◽  
Author(s):  
Joana F. Guerreiro ◽  
Alexander Muir ◽  
Subramaniam Ramachandran ◽  
Jeremy Thorner ◽  
Isabel Sá-Correia
Keyword(s):  
Acetic Acid ◽  
Protein Kinase ◽  
Cellular Response ◽  
Molecular Mechanisms ◽  
Acid Stress ◽  
Acid Tolerance ◽  
Industrial Biotechnology ◽  
Acetic Acid Tolerance ◽  
Spoilage Yeasts ◽  
Sphingolipid Biosynthesis

Acetic acid-induced inhibition of yeast growth and metabolism limits the productivity of industrial fermentation processes, especially when lignocellulosic hydrolysates are used as feedstock in industrial biotechnology. Tolerance to acetic acid of food spoilage yeasts is also a problem in the preservation of acidic foods and beverages. Thus understanding the molecular mechanisms underlying adaptation and tolerance to acetic acid stress is increasingly important in industrial biotechnology and the food industry. Prior genetic screens for Saccharomyces cerevisiae mutants with increased sensitivity to acetic acid identified loss-of-function mutations in the YPK1 gene, which encodes a protein kinase activated by the target of rapamycin (TOR) complex 2 (TORC2). We show in the present study by several independent criteria that TORC2–Ypk1 signaling is stimulated in response to acetic acid stress. Moreover, we demonstrate that TORC2-mediated Ypk1 phosphorylation and activation is necessary for acetic acid tolerance, and occurs independently of Hrk1, a protein kinase previously implicated in the cellular response to acetic acid. In addition, we show that TORC2–Ypk1-mediated activation of l-serine:palmitoyl-CoA acyltransferase, the enzyme complex that catalyzes the first committed step of sphingolipid biosynthesis, is required for acetic acid tolerance. Furthermore, analysis of the sphingolipid pathway using inhibitors and mutants indicates that it is production of certain complex sphingolipids that contributes to conferring acetic acid tolerance. Consistent with that conclusion, promoting sphingolipid synthesis by adding exogenous long-chain base precursor phytosphingosine to the growth medium enhanced acetic acid tolerance. Thus appropriate modulation of the TORC2–Ypk1–sphingolipid axis in industrial yeast strains may have utility in improving fermentations of acetic acid-containing feedstocks.

Different response to acetic acid stress inSaccharomyces cerevisiaewild-type andl-ascorbic acid-producing strains

Yeast ◽  
2013 ◽  
Vol 30 (9) ◽  
pp. 365-378 ◽  
Author(s):  
Francesca Martani ◽  
Tiziana Fossati ◽  
Riccardo Posteri ◽  
Lorenzo Signori ◽  
Danilo Porro ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Acetic Acid ◽  
Acid Stress ◽  
Different Response

scholarly journals Endogenous lycopene improves ethanol production under acetic acid stress in Saccharomyces cerevisiae

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Shuo Pan ◽  
Bin Jia ◽  
Hong Liu ◽  
Zhen Wang ◽  
Meng-Zhe Chai ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Acetic Acid ◽  
Ethanol Production ◽  
Acid Stress

Waste valorization: Identification of an ethanol tolerant bacterium Acetobacter pasteurianus SKYAA25 for acetic acid production from apple pomace

2019 ◽  
Vol 690 ◽  
pp. 956-964 ◽  
Author(s):  
Alokika Vashisht ◽  
Karnika Thakur ◽  
Baljinder S. Kauldhar ◽  
Vinod Kumar ◽  
Sudesh Kumar Yadav
Keyword(s):  
Acetic Acid ◽  
Acid Production ◽  
Apple Pomace ◽  
Waste Valorization ◽  
Acetic Acid Production ◽  
Acetobacter Pasteurianus
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