{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T15:45:23Z","timestamp":1760888723730},"reference-count":37,"publisher":"American Society for Microbiology","issue":"17","license":[{"start":{"date-parts":[[2012,9,1]],"date-time":"2012-09-01T00:00:00Z","timestamp":1346457600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.asm.org\/non-commercial-tdm-license"}],"content-domain":{"domain":["journals.asm.org"],"crossmark-restriction":true},"short-container-title":["Appl Environ Microbiol"],"published-print":{"date-parts":[[2012,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Intracellular pH (pH\n            <jats:sub>in<\/jats:sub>\n            ) is a tightly regulated physiological parameter, which controls cell performance in all living systems. The purpose of this work was to evaluate if and how H\n            <jats:sup>+<\/jats:sup>\n            homeostasis is accomplished by an industrial wine strain of\n            <jats:named-content content-type=\"genus-species\">Saccharomyces cerevisiae<\/jats:named-content>\n            while fermenting real must under the harsh winery conditions prevalent in the late stages of the fermentation process, in particular low pH and high ethanol concentrations and temperature. Cells grown at 15, 25, and 30\u00b0C were harvested in exponential and early and late stationary phases. Intracellular pH remained in the range of 6.0 to 6.4, decreasing significantly only by the end of glucose fermentation, in particular at lower temperatures (pH\n            <jats:sub>in<\/jats:sub>\n            5.2 at 15\u00b0C), although the cells remained viable and metabolically active. The cell capability of extruding H\n            <jats:sup>+<\/jats:sup>\n            via H\n            <jats:sup>+<\/jats:sup>\n            -ATPase and of keeping H\n            <jats:sup>+<\/jats:sup>\n            out by means of an impermeable membrane were evaluated as potential mechanisms of H\n            <jats:sup>+<\/jats:sup>\n            homeostasis. At 30\u00b0C, H\n            <jats:sup>+<\/jats:sup>\n            efflux was higher in all stages. The most striking observation was that cells in late stationary phase became almost impermeable to H\n            <jats:sup>+<\/jats:sup>\n            . Even when these cells were challenged with high ethanol concentrations (up to 20%) added in the assay, their permeability to H\n            <jats:sup>+<\/jats:sup>\n            remained very low, being almost undetectable at 15\u00b0C. Comparatively, ethanol significantly increased the H\n            <jats:sup>+<\/jats:sup>\n            permeability of cells in exponential phase. Understanding the molecular and physiological events underlying yeast H\n            <jats:sup>+<\/jats:sup>\n            homeostasis at late stages of fermentations may contribute to the development of more robust strains suitable to efficiently produce a high-quality wine.\n          <\/jats:p>","DOI":"10.1128\/aem.01355-12","type":"journal-article","created":{"date-parts":[[2012,6,30]],"date-time":"2012-06-30T03:07:40Z","timestamp":1341025660000},"page":"6302-6308","update-policy":"http:\/\/dx.doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":17,"title":["Peculiar H\n            <sup>+<\/sup>\n            Homeostasis of Saccharomyces cerevisiae during the Late Stages of Wine Fermentation"],"prefix":"10.1128","volume":"78","author":[{"given":"Tiago","family":"Viana","sequence":"first","affiliation":[{"name":"Centro de Bot\u00e2nica Aplicada \u00e0 Agricultura, Instituto Superior de Agronomia, Universidade T\u00e9cnica de Lisboa, Lisbon, Portugal"}]},{"given":"Maria C.","family":"Loureiro-Dias","sequence":"additional","affiliation":[{"name":"Centro de Bot\u00e2nica Aplicada \u00e0 Agricultura, Instituto Superior de Agronomia, Universidade T\u00e9cnica de Lisboa, Lisbon, Portugal"}]},{"given":"Virg\u00edlio","family":"Loureiro","sequence":"additional","affiliation":[{"name":"Centro de Bot\u00e2nica Aplicada \u00e0 Agricultura, Instituto Superior de Agronomia, Universidade T\u00e9cnica de Lisboa, Lisbon, Portugal"}]},{"given":"Catarina","family":"Prista","sequence":"additional","affiliation":[{"name":"Centro de Bot\u00e2nica Aplicada \u00e0 Agricultura, Instituto Superior de Agronomia, Universidade T\u00e9cnica de Lisboa, Lisbon, Portugal"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijfoodmicro.2006.02.002"},{"key":"e_1_3_2_3_2","doi-asserted-by":"publisher","DOI":"10.3109\/07388558909036740"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp803092z"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00253-009-2223-1"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1111\/j.1567-1364.2006.00040.x"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1128\/AEM.64.2.530-534.1998"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1021\/jp808041z"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1093\/jb\/mvj089"},{"key":"e_1_3_2_10_2","doi-asserted-by":"publisher","DOI":"10.1016\/S1369-5274(02)00377-6"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1128\/AEM.00694-11"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1002\/bit.260271113"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.febslet.2007.05.048"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/0005-2736(84)90272-4"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1002\/bit.260241124"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiotec.2007.07.937"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.nbt.2009.06.984"},{"key":"e_1_3_2_18_2","doi-asserted-by":"publisher","DOI":"10.1002\/bit.260280919"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00249010"},{"key":"e_1_3_2_20_2","doi-asserted-by":"crossref","unstructured":"MaM\nLiuLZ. 2010. 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