{"corpus_id":9086243,"paper_sha":"39b092de26914786a8da1ce9eaed7cfa18ab1b57","doi":"10.1093/jxb/erq132","arxiv_id":null,"pmid":20504875,"pmcid":"2892149","mag_id":2166582130,"dblp_id":null,"acl_id":null,"title":"Blue light dose–responses of leaf photosynthesis, morphology, and chemical composition of Cucumis sativus grown under different combinations of red and blue light","year":2010,"publication_date":"2010-05-26","venue":"Journal of Experimental Botany","journal":{"name":"Journal of Experimental Botany","pages":"3107 - 3117","volume":"61"},"journal_issn":null,"journal_title":null,"publication_types":["JournalArticle"],"pubmed_pub_types":["Journal Article","Research Support, Non-U.S. Gov't"],"s2_fields_of_study":["Biology","Medicine","Environmental Science"],"reference_count":56,"citation_count":848,"influential_citation_count":52,"is_open_access":true,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":[{"d":"Chlorophyll","mj":false,"qs":[{"q":"analysis","mj":true,"ui":"Q000032"},{"q":"metabolism","mj":false,"ui":"Q000378"}],"ui":"D002734"},{"d":"Cucumis sativus","mj":false,"qs":[{"q":"chemistry","mj":true,"ui":"Q000737"},{"q":"growth & development","mj":true,"ui":"Q000254"},{"q":"metabolism","mj":false,"ui":"Q000378"},{"q":"radiation effects","mj":false,"ui":"Q000528"}],"ui":"D018553"},{"d":"Light","mj":false,"ui":"D008027"},{"d":"Nitrogen","mj":false,"qs":[{"q":"analysis","mj":true,"ui":"Q000032"},{"q":"metabolism","mj":false,"ui":"Q000378"}],"ui":"D009584"},{"d":"Photosynthesis","mj":false,"qs":[{"q":"radiation effects","mj":true,"ui":"Q000528"}],"ui":"D010788"},{"d":"Plant Leaves","mj":false,"qs":[{"q":"chemistry","mj":false,"ui":"Q000737"},{"q":"growth & development","mj":false,"ui":"Q000254"},{"q":"metabolism","mj":false,"ui":"Q000378"},{"q":"radiation effects","mj":false,"ui":"Q000528"}],"ui":"D018515"}],"chemicals":[{"n":"Chlorophyll","ui":"D002734","reg":"1406-65-1"},{"n":"Nitrogen","ui":"D009584","reg":"N762921K75"}],"comments_corrections":null,"source_flags":5,"s2_open_access_pdf_url":"https://academic.oup.com/jxb/article-pdf/61/11/3107/1197442/erq132.pdf","s2_open_access_landing_url":"https://www.semanticscholar.org/paper/39b092de26914786a8da1ce9eaed7cfa18ab1b57","s2_open_access_license":"CCBYNC","s2_open_access_status":"HYBRID","pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"The blue part of the light spectrum has been associated with leaf characteristics which also develop under high irradiances. In this study blue light dose–response curves were made for the photosynthetic properties and related developmental characteristics of cucumber leaves that were grown at an equal irradiance under seven different combinations of red and blue light provided by light-emitting diodes. Only the leaves developed under red light alone (0% blue) displayed dysfunctional photosynthetic operation, characterized by a suboptimal and heterogeneously distributed dark-adapted Fv/Fm, a stomatal conductance unresponsive to irradiance, and a relatively low light-limited quantum yield for CO2 fixation. Only 7% blue light was sufficient to prevent any overt dysfunctional photosynthesis, which can be considered a qualitatively blue light effect. The photosynthetic capacity (Amax) was twice as high for leaves grown at 7% blue compared with 0% blue, and continued to increase with increasing blue percentage during growth measured up to 50% blue. At 100% blue, Amax was lower but photosynthetic functioning was normal. The increase in Amax with blue percentage (0–50%) was associated with an increase in leaf mass per unit leaf area (LMA), nitrogen (N) content per area, chlorophyll (Chl) content per area, and stomatal conductance. Above 15% blue, the parameters Amax, LMA, Chl content, photosynthetic N use efficiency, and the Chl:N ratio had a comparable relationship as reported for leaf responses to irradiance intensity. It is concluded that blue light during growth is qualitatively required for normal photosynthetic functioning and quantitatively mediates leaf responses resembling those to irradiance intensity.","claims":[{"public_id":"cl_c9e1eebff25f2ffddd6ceabc2f1bfd49","status":"active","text":"Blue light during growth is qualitatively required for normal photosynthetic functioning and quantitatively mediates leaf responses resembling those to irradiance intensity.","confidence":0.96,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_c9e1eebff25f2ffddd6ceabc2f1bfd49"},{"public_id":"cl_4b54975bdf4a614fd44025c7fafa4f96","status":"active","text":"Increasing blue percentage from 0% to 50% was associated with higher leaf mass per unit leaf area, nitrogen content per area, chlorophyll content per area, and stomatal conductance.","confidence":0.95,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_4b54975bdf4a614fd44025c7fafa4f96"},{"public_id":"cl_f7d74fff5c13fc2a1a73ccce07d11425","status":"active","text":"Leaves grown under red light alone showed dysfunctional photosynthetic operation, including suboptimal and heterogeneously distributed dark-adapted Fv/Fm, stomatal conductance unresponsive to irradiance, and low light-limited quantum yield for CO2 fixation.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_f7d74fff5c13fc2a1a73ccce07d11425"},{"public_id":"cl_3f486f0ef1539f7d57a0c2d10adb40ff","status":"active","text":"Photosynthetic capacity was twice as high at 7% blue light as at 0% blue light and increased further with blue percentage up to 50% blue.","confidence":0.98,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_3f486f0ef1539f7d57a0c2d10adb40ff"},{"public_id":"cl_3929f6c604113c501396b1894d433ca6","status":"active","text":"Seven percent blue light was sufficient to prevent overt dysfunctional photosynthesis.","confidence":0.97,"contributors":[{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["extraction"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_3929f6c604113c501396b1894d433ca6"}],"concepts":[{"public_id":"co_0297807fc3b5358e7d8c477e2e33675d","status":"active","name":"nitrogen content per area","description":"The amount of nitrogen contained per unit leaf area.","types":["chemical composition"],"aliases":["N content per 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