{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,3]],"date-time":"2026-11-03T04:48:06Z","timestamp":1793681286925,"version":"4.5.1"},"reference-count":239,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2025,6,4]],"date-time":"2025-06-04T00:00:00Z","timestamp":1748995200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Bioeng. Biotechnol."],"abstract":"<jats:p>The persistence of fossil fuel-based plastics poses significant environmental challenges, prompting increased research into biodegradable polyhydroxyalkanoate (PHA) polymers derived from cost-effective and sustainable resources. Different microorganisms can produce PHA amongst carbon dioxide (CO<jats:sub>2<\/jats:sub>)-assimilating autotrophic organisms, particularly noteworthy in carbon capture and utilization (CCU). Autotrophic bacteria have evolved to utilize either light (photoautotrophy) or inorganic chemicals (chemolithoautotrophy) to capture CO<jats:sub>2<\/jats:sub>, which powers their primary and secondary metabolic activities. This review explores the diversity of PHA-producing autotrophs, the metabolic pathways implicated in autotrophic PHA accumulation, and recent progress in photoautotrophs and chemolithoautotrophs regarding PHA synthesis using CO<jats:sub>2<\/jats:sub>. Additionally, microbial electrosynthesis for converting CO<jats:sub>2<\/jats:sub> to PHA is also discussed. Genetic engineering strategies are also emphasized for the autotrophic synthesis of PHA. This review also addresses the challenges and prospects for sustainable PHA production using CO<jats:sub>2<\/jats:sub>.<\/jats:p>","DOI":"10.3389\/fbioe.2025.1545438","type":"journal-article","created":{"date-parts":[[2025,6,4]],"date-time":"2025-06-04T05:40:25Z","timestamp":1749015625000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":23,"title":["Autotrophic bacterial production of polyhydroxyalkanoates using carbon dioxide as a sustainable carbon source"],"prefix":"10.3389","volume":"13","author":[{"given":"Ganesan","family":"Sathiyanarayanan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sandra","family":"Esteves","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2025,6,4]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"732","DOI":"10.1002\/jctb.2392","article-title":"Production of polyhydroxyalkanoates: the future green materials of choice","volume":"85","author":"Akaraonye","year":"2010","journal-title":"J. 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