{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T23:22:44Z","timestamp":1787872964929,"version":"build-2784847793"},"reference-count":44,"publisher":"American Society for Microbiology","issue":"5","license":[{"start":{"date-parts":[[2008,3,1]],"date-time":"2008-03-01T00:00:00Z","timestamp":1204329600000},"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":["J Bacteriol"],"published-print":{"date-parts":[[2008,3]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n          <jats:p>\n            Unlike\n            <jats:italic>Escherichia coli<\/jats:italic>\n            , the cyanobacterium\n            <jats:italic>Synechocystis<\/jats:italic>\n            sp. strain PCC 6803 is insensitive to chill (5\u00b0C) in the dark but rapidly losses viability when exposed to chill in the light (100 \u03bcmol photons m\n            <jats:sup>\u22122<\/jats:sup>\n            s\n            <jats:sup>\u22121<\/jats:sup>\n            ). Preconditioning at a low temperature (15\u00b0C) greatly enhances the chill-light tolerance of\n            <jats:italic>Synechocystis<\/jats:italic>\n            sp. strain PCC 6803. This phenomenon is called acquired chill-light tolerance (ACLT). Preconditioned wild-type cells maintained a substantially higher level of \u03b1-tocopherol after exposure to chill-light stress. Mutants unable to synthesize \u03b1-tocopherol, such as slr1736, slr1737, slr0089, and slr0090 mutants, almost completely lost ACLT. When exposed to chill without light, these mutants showed no or a slight difference from the wild type. When complemented, the slr0089 mutant regained its ACLT. Copper-regulated expression of slr0090 from P\n            <jats:sub>\n              <jats:italic>petE<\/jats:italic>\n            <\/jats:sub>\n            controlled the level of \u03b1-tocopherol and ACLT. We conclude that \u03b1-tocopherol is essential for ACLT of\n            <jats:italic>Synechocystis<\/jats:italic>\n            sp. strain PCC 6803. The role of \u03b1-tocopherol in ACLT may be based largely on a nonantioxidant activity that is not possessed by other tocopherols or pathway intermediates.\n          <\/jats:p>","DOI":"10.1128\/jb.01577-07","type":"journal-article","created":{"date-parts":[[2007,12,29]],"date-time":"2007-12-29T01:41:24Z","timestamp":1198892484000},"page":"1554-1560","update-policy":"https:\/\/doi.org\/10.1128\/asmj-crossmark-policy-page","source":"Crossref","is-referenced-by-count":36,"title":["\u03b1-Tocopherol Is Essential for Acquired Chill-Light Tolerance in the Cyanobacterium\n            <i>Synechocystis<\/i>\n            sp. Strain PCC 6803"],"prefix":"10.1128","volume":"190","author":[{"given":"Yang","family":"Yang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuntao","family":"Yin","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weizhi","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xudong","family":"Xu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"235","reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"crossref","first-page":"758","DOI":"10.1016\/j.jplph.2005.04.006","volume":"162","year":"2005","unstructured":"Backasch, N., R. 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