{"id":501,"date":"2023-11-02T18:04:37","date_gmt":"2023-11-02T18:04:37","guid":{"rendered":"https:\/\/www.lpcv-alumni.fr\/?p=501"},"modified":"2023-11-06T14:19:21","modified_gmt":"2023-11-06T14:19:21","slug":"le-co2-un-acteur-inattendu-dans-la-survie-des-microalgues-2","status":"publish","type":"post","link":"https:\/\/www.lpcv-alumni.fr\/en\/2023\/11\/02\/le-co2-un-acteur-inattendu-dans-la-survie-des-microalgues-2\/","title":{"rendered":"CO2: an unexpected player in the survival of microalgae"},"content":{"rendered":"<p class=\"has-text-align-left wp-block-paragraph\">The Quenching of Energy (qE) and the CO2 Concentrating Mechanism (CCM) are crucial to the survival of microalgae. Mutants deficient in qE cannot survive exposure to intense light, and mutants deficient in CCM cannot grow photoautotrophically (i.e. using light as an energy source and carbon dioxide as a carbon source) unless supplemented with high levels of CO2<sub>2<\/sub>. While the two processes have traditionally been studied separately, LPCV researchers have demonstrated that they are largely co-regulated and share common characteristics&nbsp;<strong>control elements<\/strong>&nbsp;common.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">Until now, the presence of light was considered essential for the activation of qE and CMM. However, this work has unexpectedly shown that the expression of the genes involved in these two processes is largely controlled by the availability of CO2.<sub>2<\/sub>. This discovery suggests that the impact of light on the regulation of gene expression is often indirect and reflects changes in intracellular CO2 levels.<sub>2<\/sub>defined by the balance between CO2<sub>2<\/sub>&nbsp;in chloroplasts and CO2 generation<sub>2<\/sub>&nbsp;by mitochondrial respiration. These observations add a new facet to the role of CO2<sub>2<\/sub>&nbsp;in photosynthetic microalgae. So, as well as being a substrate for photosynthesis, CO2<sub>2<\/sub>&nbsp;est \u00e9galement une mol\u00e9cule de signalisation qui r\u00e9gule l&rsquo;expression des g\u00e8nes en r\u00e9ponse aux changements de lumi\u00e8re et de la disponibilit\u00e9 du CO<sub>2<\/sub>.<\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\">Ces d\u00e9couvertes permettent de mieux comprendre les m\u00e9canismes mol\u00e9culaires qui r\u00e9gissent le m\u00e9tabolisme du CO<sub>2<\/sub>&nbsp;photosynth\u00e9tique et peuvent \u00eatre utilis\u00e9es pour permettre \u00e0 la biosph\u00e8re de r\u00e9agir plus efficacement \u00e0 la r\u00e9gulation de la concentration de CO<sub>2<\/sub>&nbsp;dans l&rsquo;atmosph\u00e8re, mais aussi de progresser vers une \u00e9conomie durable \u00e0 faible teneur en carbone pour exploiter pleinement le potentiel biotechnologique des microalgues.<\/p>","protected":false},"excerpt":{"rendered":"<p>Le Quenching of Energy (qE) et le CO2 Concentrating Mechanism (CCM) sont cruciaux pour la survie des microalgues. Des mutants d\u00e9ficients en qE ne peuvent pas survivre \u00e0 une exposition \u00e0 une lumi\u00e8re intense, et des mutants d\u00e9ficients en CCM ne peuvent pas cro\u00eetre de mani\u00e8re photoautotrophe (c\u2019est-\u00e0-dire en utilisant la lumi\u00e8re comme source d&rsquo;\u00e9nergie&hellip; <a class=\"more-link\" href=\"https:\/\/www.lpcv-alumni.fr\/en\/2023\/11\/02\/le-co2-un-acteur-inattendu-dans-la-survie-des-microalgues-2\/\">Continue reading <span class=\"screen-reader-text\">CO2: an unexpected player in the survival of microalgae<\/span><\/a><\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-501","post","type-post","status-publish","format-standard","hentry","category-blog","entry"],"_links":{"self":[{"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/posts\/501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/comments?post=501"}],"version-history":[{"count":2,"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/posts\/501\/revisions"}],"predecessor-version":[{"id":507,"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/posts\/501\/revisions\/507"}],"wp:attachment":[{"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/media?parent=501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/categories?post=501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lpcv-alumni.fr\/en\/wp-json\/wp\/v2\/tags?post=501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}