scholarly journals Genomic signatures of adaptation to wine biological ageing conditions in biofilm-forming flor yeasts

2017 ◽  
Vol 26 (7) ◽  
pp. 2150-2166 ◽  
Author(s):  
A. L. Coi ◽  
F. Bigey ◽  
S. Mallet ◽  
S. Marsit ◽  
G. Zara ◽  
...  
Keyword(s):  
Biological Ageing ◽  
Genomic Signatures ◽  
Flor Yeasts

scholarly journals The veil of flor's structure, composition and interactions in biological ageing wines

2019 ◽  
Vol 15 ◽  
pp. 02018
Author(s):  
M. Ruiz-Muñoz ◽  
G. Cordero-Bueso ◽  
S. Martínez ◽  
F. Pérez ◽  
D. Hughes-Herrera ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Yeast Metabolism ◽  
Biological Ageing ◽  
Grape Must ◽  
Yeast Strains ◽  
Flor Yeast ◽  
Flor Yeasts ◽  
Biochemical Profiles ◽  
The Veil

Biological ageing occurs after fermentation of the grape must and it is due to the appearance of a biofilm on the surface of the wine called “veil of flor”. Yeast involved in veil formation are mainly Saccharomyces cerevisiae and they have traditionally been divided into four races according to their ability to metabolize different sugars. The growth of flor yeasts depends on different factors, such as the aerobic assimilation of the wine ethanol, since the medium is deficient in both sugars and nitrogen. Actually, flor yeast metabolism is different from wine S. cerevisiaeyeast, but it hasn't been analysed yet. Thus, the aim of this work is to study the diversity of flor yeast strains and to analyse the composition and the structure of the veil of flor in Jerez-Xérés-Sherry D.O. The results of this work revealed 14 different genotypes of S. cerevisiaestrains using multiplex-microsatellite PCR and these strains showed 8 different biochemical profiles using a similar procedure than traditionally. In addition, mannose and glucose were found in veil of flor complex using UHPLC-MS.

A computer simulation for biological ageing

1994 ◽  
Vol 4 (10) ◽  
pp. 1563-1570 ◽  
Author(s):  
Subinay Dasgupta
Keyword(s):  
Computer Simulation ◽  
Biological Ageing

scholarly journals Genomic signatures of local adaptation to the degree of environmental predictability in rotifers

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Lluis Franch-Gras ◽  
Christoph Hahn ◽  
Eduardo M. García-Roger ◽  
María José Carmona ◽  
Manuel Serra ◽  
...  
Keyword(s):  
Local Adaptation ◽  
Genomic Signatures ◽  
Environmental Predictability

scholarly journals Genomic signatures of clonality in the deep water kelpLaminaria rodriguezii

2021 ◽  
Vol 30 (8) ◽  
pp. 1806-1822
Author(s):  
Lauric Reynes ◽  
Thierry Thibaut ◽  
Stéphane Mauger ◽  
Aurélie Blanfuné ◽  
Florian Holon ◽  
...  
Keyword(s):  
Deep Water ◽  
Genomic Signatures

scholarly journals Comparative insights into genome signatures of ferric iron oxide- and anode-stimulated Desulfuromonas spp. strains

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yong Guo ◽  
Tomo Aoyagi ◽  
Tomoyuki Hori
Keyword(s):  
Iron Oxide ◽  
Genome Rearrangement ◽  
Ferric Iron ◽  
Electron Acceptors ◽  
Extracellular Electron Transfer ◽  
Redox Potentials ◽  
Bacterial Strains ◽  
Biosynthesis Gene Cluster ◽  
Genomic Signatures ◽  
Flagellar Biosynthesis

Abstract Background Halotolerant Fe (III) oxide reducers affiliated in the family Desulfuromonadaceae are ubiquitous and drive the carbon, nitrogen, sulfur and metal cycles in marine subsurface sediment. Due to their possible application in bioremediation and bioelectrochemical engineering, some of phylogenetically close Desulfuromonas spp. strains have been isolated through enrichment with crystalline Fe (III) oxide and anode. The strains isolated using electron acceptors with distinct redox potentials may have different abilities, for instance, of extracellular electron transport, surface recognition and colonization. The objective of this study was to identify the different genomic signatures between the crystalline Fe (III) oxide-stimulated strain AOP6 and the anode-stimulated strains WTL and DDH964 by comparative genome analysis. Results The AOP6 genome possessed the flagellar biosynthesis gene cluster, as well as diverse and abundant genes involved in chemotaxis sensory systems and c-type cytochromes capable of reduction of electron acceptors with low redox potentials. The WTL and DDH964 genomes lacked the flagellar biosynthesis cluster and exhibited a massive expansion of transposable gene elements that might mediate genome rearrangement, while they were deficient in some of the chemotaxis and cytochrome genes and included the genes for oxygen resistance. Conclusions Our results revealed the genomic signatures distinctive for the ferric iron oxide- and anode-stimulated Desulfuromonas spp. strains. These findings highlighted the different metabolic abilities, such as extracellular electron transfer and environmental stress resistance, of these phylogenetically close bacterial strains, casting light on genome evolution of the subsurface Fe (III) oxide reducers.

scholarly journals Capturing genomic signatures of DNA sequence variation using a standard anonymous microarray platform

2006 ◽  
Vol 34 (18) ◽  
pp. e121-e121 ◽  
Author(s):  
C. H. Cannon ◽  
C. S. Kua ◽  
E. K. Lobenhofer ◽  
P. Hurban
Keyword(s):  
Dna Sequence ◽  
Sequence Variation ◽  
Microarray Platform ◽  
Genomic Signatures ◽  
Dna Sequence Variation
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