{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,22]],"date-time":"2026-08-22T02:17:43Z","timestamp":1787365063984,"version":"build-2736575974"},"reference-count":92,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2025,4,11]],"date-time":"2025-04-11T00:00:00Z","timestamp":1744329600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,4,11]],"date-time":"2025-04-11T00:00:00Z","timestamp":1744329600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100012688","name":"Universit\u00e4t Rostock","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100012688","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["nph.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["New Phytologist"],"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:title>Summary<\/jats:title>\n                  <jats:p>\n                    <jats:list list-type=\"bullet\">\n                      <jats:list-item>\n                        <jats:p>\n                          Photorespiration is a mandatory metabolic repair shunt of carbon fixation by the Calvin\u2013Benson cycle in oxygenic phototrophs. Its extent depends mainly on the CO\n                          <jats:sub>2<\/jats:sub>\n                          \u2009:\u2009O\n                          <jats:sub>2<\/jats:sub>\n                          ratio in chloroplasts, which is regulated via stomatal movements. Despite a comprehensive understanding of the role of photorespiration in mesophyll cells, its role in guard cells (GC) is unknown. Therefore, a key enzyme of photorespiration, glycine decarboxylase (GDC), was specifically manipulated by varying glycine decarboxylase H\u2010protein (GDC\u2010H) expression in Arabidopsis GC.\n                        <\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>Multiple approaches were used to analyze the transgenic lines growth, their gas exchange and Chl fluorescence, alongside metabolomics and microscopic approaches.<\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>\n                          We observed a positive correlation of GC\n                          <jats:italic>GDC\u2010H<\/jats:italic>\n                          expression with growth, photosynthesis and carbohydrate biosynthesis, suggesting photorespiration is involved in stomatal regulation. Gas exchange measurements support this view, as optimized GC photorespiration improved plant acclimation toward conditions requiring a high photorespiratory capacity. Microscopic analysis revealed that altered photorespiratory flux also affected GC starch accumulation patterns, eventually serving as an underlying mechanism for altered stomatal behavior.\n                        <\/jats:p>\n                      <\/jats:list-item>\n                      <jats:list-item>\n                        <jats:p>\n                          Collectively, our data suggest photorespiration is involved in the regulatory circuit that coordinates stomatal movements with CO\n                          <jats:sub>2<\/jats:sub>\n                          availability. Thus, the manipulation of photorespiration in GC has the potential to engineer crops maintaining growth and photosynthesis under future climates.\n                        <\/jats:p>\n                      <\/jats:list-item>\n                    <\/jats:list>\n                  <\/jats:p>","DOI":"10.1111\/nph.70124","type":"journal-article","created":{"date-parts":[[2025,4,12]],"date-time":"2025-04-12T02:33:46Z","timestamp":1744425226000},"page":"2102-2117","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Guard cell\u2010specific glycine decarboxylase manipulation affects Arabidopsis photosynthesis, growth and stomatal behavior"],"prefix":"10.1111","volume":"246","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-2027-5444","authenticated-orcid":false,"given":"Hu","family":"Sun","sequence":"first","affiliation":[{"name":"Plant Physiology Department University of Rostock  Albert\u2010Einstein\u2010Stra\u00dfe 3 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