{"created":"2025-10-28T01:26:45.717057+00:00","id":2001050,"links":{},"metadata":{"_buckets":{"deposit":"34e05eed-b0ff-43a0-9a65-a679fe15e0af"},"_deposit":{"created_by":74,"id":"2001050","owners":[74],"pid":{"revision_id":0,"type":"depid","value":"2001050"},"status":"published"},"_oai":{"id":"oai:jircas.repo.nii.ac.jp:02001050","sets":["1718256554766:1718256617194"]},"author_link":[],"control_number":"2001050","item_30002_access_rights4":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_30002_bibliographic_information29":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2025-10-14","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"52","bibliographicVolumeNumber":"163","bibliographic_titles":[{"bibliographic_title":"Photosynthesis research","bibliographic_titleLang":"en"}]}]},"item_30002_creator2":{"attribute_name":"作成者","attribute_type":"creator","attribute_value_mlt":[{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"0000000121078171","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"https://isni.org/isni/0000000121078171"}],"affiliationNames":[{"affiliationName":"Japan International Research Center for Agricultural Sciences","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"Takaragawa, Hiroo","creatorNameLang":"en","creatorNameType":"Personal"}],"creatorType":"Author","nameIdentifiers":[{"nameIdentifier":"0000-0002-6238-1078","nameIdentifierScheme":"ORCID","nameIdentifierURI":"https://orcid.org/0000-0002-6238-1078"}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"0000000106855104","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"https://isni.org/isni/0000000106855104"}],"affiliationNames":[{"affiliationName":"University of the Ryukyus","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"Asahi, Tomoki","creatorNameLang":"en","creatorNameType":"Personal"}],"creatorType":"Author"},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"0000000106855104","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"https://isni.org/isni/0000000106855104"}],"affiliationNames":[{"affiliationName":"University of the Ryukyus","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"Mitsuoka, Muneshi","creatorNameLang":"en","creatorNameType":"Personal"}],"creatorType":"Author"},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"0000000106855104","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"https://isni.org/isni/0000000106855104"}],"affiliationNames":[{"affiliationName":"University of the Ryukyus","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"Taira, Eizo","creatorNameLang":"en","creatorNameType":"Personal"}],"creatorType":"Author","nameIdentifiers":[{"nameIdentifier":"0000-0002-6766-128X","nameIdentifierScheme":"ORCID","nameIdentifierURI":"https://orcid.org/0000-0002-6766-128X"}]},{"creatorAffiliations":[{"affiliationNameIdentifiers":[{"affiliationNameIdentifier":"0000000106855104","affiliationNameIdentifierScheme":"ISNI","affiliationNameIdentifierURI":"https://isni.org/isni/0000000106855104"}],"affiliationNames":[{"affiliationName":"University of the Ryukyus","affiliationNameLang":"en"}]}],"creatorNames":[{"creatorName":"Kawamitsu, Yoshinobu","creatorNameLang":"en","creatorNameType":"Personal"}],"creatorType":"Author"}]},"item_30002_date11":{"attribute_name":"日付","attribute_value_mlt":[{"subitem_date_issued_datetime":"2025-09-05","subitem_date_issued_type":"Accepted"}]},"item_30002_description9":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"Leaf photosynthetic rate serves as a growth indicator in plant science; however, the high cost (exceeding USD 70,000) of traditional measurement system is the main concern when making photosynthesis measurements of interest to a wide range of users. Recently, the availability of inexpensive environmental sensors and single-board microcomputers has increased substantially. In this study, we selected CO₂ sensors based on a comparative analysis of four cost-effective sensors. The economical K30 sensor demonstrated a superior response to CO₂ fluctuations, compared to the other tested low-cost sensors, and exhibited noise-free stability relative to the values recorded by the high-precision system (LI-850). A closed-chamber system was constructed, incorporating the K30 sensor into a self-made chamber controlled by a single-board microcomputer. The materials for the demo device incurred an approximate cost of USD 200, resulting in a low overall expense. Leaf photosynthesis measurements for sugarcane germplasm from the demo device were compared with those from a standard open system (LI-6400), revealing a significant correlation (p < 0.001). The root mean square error (RMSE) and relative RMSE were 1.4 and 7.6% under artificial light conditions (n = 50) and 3.6 and 13.3% under natural field light conditions (n = 45), respectively. The constructed low-cost photosynthesis measurement system, utilizing the K30 CO₂ sensor and a single-board microcomputer, demonstrated high responsiveness and accuracy comparable to commercial standard systems, thereby making it accessible and practical for a broader range of users. Future work will involve selecting an inexpensive humidity sensor and establishing a system for measuring water-use efficiency.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_30002_file35":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","date":[{"dateType":"Available","dateValue":"2025-10-28"}],"displaytype":"detail","fileDate":[{"fileDateType":"Issued","fileDateValue":"2025-10-14"}],"filename":"2001050.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_5","mimetype":"application/pdf","url":{"label":"2001050","objectType":"fulltext","url":"https://jircas.repo.nii.ac.jp/record/2001050/files/2001050.pdf"},"version_id":"b98214ca-0d81-40b0-be9c-68201dd35247"}]},"item_30002_funding_reference21":{"attribute_name":"助成情報","attribute_value_mlt":[{"subitem_award_numbers":{"subitem_award_number":"05a1C4","subitem_award_uri":"https://www.jircas.go.jp/en/program/proc/c4"},"subitem_award_titles":[{"subitem_award_title":"Advancement of tropical crop genetic resources utilization through the development of database, technologies and research networking","subitem_award_title_language":"en"}],"subitem_funder_identifiers":{"subitem_funder_identifier":"https://doi.org/10.13039/501100009472","subitem_funder_identifier_type":"Crossref Funder"},"subitem_funder_names":[{"subitem_funder_name":"Japan International Research Center for Agricultural Sciences (JIRCAS)","subitem_funder_name_language":"en"}]}]},"item_30002_language12":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_30002_publisher10":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"Springer","subitem_publisher_language":"en"}]},"item_30002_relation18":{"attribute_name":"関連情報","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"en"}],"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.1007/s11120-025-01170-5","subitem_relation_type_select":"DOI"}}]},"item_30002_resource_type13":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_30002_rights6":{"attribute_name":"権利情報","attribute_value_mlt":[{"subitem_rights":"© The Author(s) 2025","subitem_rights_language":"en"},{"subitem_rights":"This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by-nc-nd/4.0/.","subitem_rights_language":"en","subitem_rights_resource":"https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en"},{"subitem_rights":"The version of record of this article, first published in Photosynthesis Research is available online at Publisher’s website: https://doi.org/10.1007/s11120-025-01170-5","subitem_rights_language":"en"},{"subitem_rights":"https://creativecommons.org/licenses/by-nc-nd/4.0/","subitem_rights_language":"en"}]},"item_30002_source_identifier22":{"attribute_name":"収録物識別子","attribute_value_mlt":[{"subitem_source_identifier":"0166-8595","subitem_source_identifier_type":"PISSN"},{"subitem_source_identifier":"1573-5079","subitem_source_identifier_type":"EISSN"},{"subitem_source_identifier":"AA00362200","subitem_source_identifier_type":"NCID"}]},"item_30002_subject8":{"attribute_name":"主題","attribute_value_mlt":[{"subitem_subject":"Closed system","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"CO₂ assimilation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Gas exchange","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Low-cost phenotyping","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"M5 stack","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Open system","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_30002_title0":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Establishment of a low-cost photosynthesis measurement system based on a single-board microcomputer and CO₂ sensors","subitem_title_language":"en"}]},"item_30002_version_type15":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_title":"Establishment of a low-cost photosynthesis measurement system based on a single-board microcomputer and CO₂ sensors","item_type_id":"40039","owner":"74","path":["1718256617194"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2025-10-28"},"publish_date":"2025-10-28","publish_status":"0","recid":"2001050","relation_version_is_last":true,"title":["Establishment of a low-cost photosynthesis measurement system based on a single-board microcomputer and CO₂ sensors"],"weko_creator_id":"74","weko_shared_id":-1},"updated":"2025-10-31T06:50:08.549957+00:00"}