{"id":6283,"date":"2025-06-19T21:38:02","date_gmt":"2025-06-19T12:38:02","guid":{"rendered":"https:\/\/tuat-chemphys.net\/?p=6283"},"modified":"2025-06-23T14:18:30","modified_gmt":"2025-06-23T05:18:30","slug":"%e6%a4%8d%e7%89%a9%e3%81%ae%e5%81%a5%e5%ba%b7%e3%82%92%e8%a6%8b%e5%ae%88%e3%82%8b%ef%bc%81%e8%b6%85%e9%ab%98%e6%84%9f%e5%ba%a6%e3%82%bb%e3%83%b3%e3%82%b5%e3%83%bc%e3%81%ae%e9%96%8b%e7%99%ba-plant-heal","status":"publish","type":"post","link":"https:\/\/tuat-chemphys.net\/?p=6283","title":{"rendered":"\u690d\u7269\u306e\u5065\u5eb7\u3092\u898b\u5b88\u308b\uff01\u8d85\u9ad8\u611f\u5ea6\u30bb\u30f3\u30b5\u30fc\u306e\u958b\u767a Plant Health Sensor Achieves Ultra-Sensitive Detection"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"revolutionary-plant-health-sensor-achieves-ultra-s\">\u690d\u7269\u306e\u5065\u5eb7\u3092\u898b\u5b88\u308b\uff01\u8d85\u9ad8\u611f\u5ea6\u30bb\u30f3\u30b5\u30fc\u306e\u958b\u767a Plant Health Sensor Achieves Ultra-Sensitive Detection<\/h1>\n\n\n\n<p>English follows Japanese.<\/p>\n\n\n\n<p>\u6e05\u6c34\u6559\u6388\u3089\u306e\u7814\u7a76\u30b0\u30eb\u30fc\u30d7\u306f\u3001\u690d\u7269\u304c\u767a\u3059\u308b\u3054\u304f\u5fae\u91cf\u306a\u300cSOS\u30b5\u30a4\u30f3\u300d\u3092\u30ad\u30e3\u30c3\u30c1\u3067\u304d\u308b\u3001\u30bb\u30f3\u30b5\u30fc\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u6280\u8853\u306f\u3001\u8fb2\u696d\u3084\u74b0\u5883\u4fdd\u5168\u306b\u65b0\u3057\u3044\u53ef\u80fd\u6027\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.35848\/1347-4065\/add77d\">https:\/\/doi.org\/10.35848\/1347-4065\/add77d<\/a><\/p>\n\n\n\n<p><strong>\u690d\u7269\u306eSOS\u30b5\u30a4\u30f3\u3068\u306f\uff1f<\/strong><br>\u690d\u7269\u306f\u3001\u866b\u306b\u98df\u3079\u3089\u308c\u305f\u308a\u75c5\u6c17\u306b\u304b\u304b\u3063\u305f\u308a\u3059\u308b\u3068\u3001\u300c\u30b8\u30e3\u30b9\u30e2\u30f3\u9178\u30e1\u30c1\u30eb\uff08MeJA\uff09\u300d\u3084\u300c\u30b5\u30ea\u30c1\u30eb\u9178\u30e1\u30c1\u30eb\uff08MeSA\uff09\u300d\u3068\u3044\u3046\u7269\u8cea\u3092\u7a7a\u6c17\u4e2d\u306b\u3054\u304f\u308f\u305a\u304b\u653e\u51fa\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u690d\u7269\u30db\u30eb\u30e2\u30f3\u306e\u4ef2\u9593\u3067\u3001\u5468\u308a\u306e\u690d\u7269\u3084\u751f\u304d\u7269\u306b\u300c\u52a9\u3051\u3066\uff01\u300d\u3068\u4f1d\u3048\u308b\u5f79\u5272\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u305d\u306e\u91cf\u306f\u3068\u3066\u3082\u5c11\u306a\u304f\u3001\u5f93\u6765\u306e\u30bb\u30f3\u30b5\u30fc\u3067\u306f\u3001\u4e21\u65b9\u3092\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u3002<\/p>\n\n\n\n<p><strong>\u65b0\u3057\u3044\u30bb\u30f3\u30b5\u30fc\u306e\u3057\u304f\u307f<\/strong><br>\u4eca\u56de\u306e\u7814\u7a76\u3067\u306f\u3001\u6b21\u306e3\u3064\u306e\u5de5\u592b\u3067\u8d85\u9ad8\u611f\u5ea6\u3092\u5b9f\u73fe\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u88fd\u30bb\u30f3\u30b5\u30fc\u30c1\u30c3\u30d7\uff1a\u3053\u308c\u307e\u3067\u3088\u304f\u4f7f\u308f\u308c\u3066\u304d\u305f\u91d1\u3088\u308a\u3082\u5e83\u3044\u6ce2\u9577\u306e\u5149\u3092\u5229\u7528\u3067\u304d\u308b\u305f\u3081\u3001\u611f\u5ea6\u304c\u30a2\u30c3\u30d7\u3002<\/li>\n\n\n\n<li>\u9178\u5316\u30b0\u30e9\u30d5\u30a7\u30f3\u306e\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a\u30bb\u30f3\u30b5\u30fc\u8868\u9762\u306b\u7279\u6b8a\u306a\u70ad\u7d20\u7d20\u6750\uff08\u9178\u5316\u30b0\u30e9\u30d5\u30a7\u30f3\uff09\u3092\u5857\u308b\u3053\u3068\u3067\u3001\u690d\u7269\u30db\u30eb\u30e2\u30f3\u3092\u52b9\u7387\u3088\u304f\u30ad\u30e3\u30c3\u30c1\u3002<\/li>\n\n\n\n<li>\u7d2b\u8272\u306e\u5149\uff08\u30d0\u30a4\u30aa\u30ec\u30c3\u30c8\u30e9\u30a4\u30c8\uff09\uff1a\u5f93\u6765\u306e\u8d64\u5916\u7dda\u3088\u308a\u3082\u77ed\u3044\u6ce2\u9577\u306e\u5149\u3092\u4f7f\u3046\u3053\u3068\u3067\u3001\u3088\u308a\u5c0f\u3055\u306a\u5909\u5316\u3082\u898b\u9003\u3057\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u3069\u308c\u304f\u3089\u3044\u3059\u3054\u3044\uff1f<\/strong><br>\u3053\u306e\u30bb\u30f3\u30b5\u30fc\u306f<mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-red-color\">\u3001<\/mark><mark style=\"background-color:rgba(0, 0, 0, 0);color:#b82d03\" class=\"has-inline-color\">0.7ppbv\uff0810\u5104\u500b\u306e\u5206\u5b50\u306e\u3046\u30610.7\u500b\uff09\u306eMeJA\u30010.28ppbv\u306eMeSA<\/mark>\u3068\u3044\u3046\u8d85\u5fae\u91cf\u3067\u3082\u691c\u51fa\u3067\u304d\u307e\u3057\u305f\u3002\u5f93\u6765\u306e\u6280\u8853\u3088\u308a\u30824\u500d\u4ee5\u4e0a\u9ad8\u3044\u611f\u5ea6\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>\u3069\u3093\u306a\u3053\u3068\u306b\u5f79\u7acb\u3064\uff1f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u75c5\u6c17\u3084\u866b\u5bb3\u306e\u65e9\u671f\u767a\u898b\uff1a\u76ee\u306b\u898b\u3048\u308b\u524d\u306b\u690d\u7269\u306e\u7570\u5909\u3092\u30ad\u30e3\u30c3\u30c1\uff01<\/li>\n\n\n\n<li>\u8fb2\u85ac\u306e\u4f7f\u3044\u3059\u304e\u9632\u6b62\uff1a\u5fc5\u8981\u306a\u3068\u304d\u3060\u3051\u30d4\u30f3\u30dd\u30a4\u30f3\u30c8\u3067\u5bfe\u5fdc\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u74b0\u5883\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\uff1a\u68ee\u3084\u7551\u306e\u5065\u5eb7\u72b6\u614b\u3092\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u3067\u898b\u5b88\u308c\u308b<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" width=\"847\" height=\"258\" data-attachment-id=\"6284\" data-permalink=\"https:\/\/tuat-chemphys.net\/?attachment_id=6284\" data-orig-file=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?fit=1038%2C316&amp;ssl=1\" data-orig-size=\"1038,316\" data-comments-opened=\"0\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"image\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?fit=847%2C258&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?resize=847%2C258&#038;ssl=1\" alt=\"\" class=\"wp-image-6284\" srcset=\"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?resize=1024%2C312&amp;ssl=1 1024w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?resize=300%2C91&amp;ssl=1 300w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?resize=768%2C234&amp;ssl=1 768w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?resize=360%2C110&amp;ssl=1 360w, https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?w=1038&amp;ssl=1 1038w\" sizes=\"auto, (max-width: 847px) 100vw, 847px\" \/><\/figure>\n\n\n\n<p>Shimizu Lab have developed a groundbreaking sensor. This sensor can detect plant stress signals at unprecedented sensitivity levels. It opens new possibilities for precision agriculture and plant health monitoring.<\/p>\n\n\n\n<p><a href=\"https:\/\/doi.org\/10.35848\/1347-4065\/add77d\">https:\/\/doi.org\/10.35848\/1347-4065\/add77d<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>The Challenge: Detecting Plant &#8220;Chemical Messages&#8221;<\/strong><\/h2>\n\n\n\n<p>Plants communicate their health status through chemical signals called volatile organic compounds (VOCs). When plants face threats like insect attacks or disease, they release specific hormone derivatives &#8211; methyl jasmonate (MeJA) when damaged by insects, and methyl salicylate (MeSA) when infected by pathogens.\u00a0These molecules are released in extremely small concentrations, making them difficult to detect with traditional sensors.<\/p>\n\n\n\n<p>Earlier detection methods for these plant hormones required complex equipment. They could only detect concentrations above 120 parts per billion (ppb) for MeJA. This limitation restricted their practical applications in real-world agricultural settings.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>The Innovation: Combining Advanced Materials with Violet Light<\/strong><\/h2>\n\n\n\n<p>The research team, led by Professor Hiromasa Shimizu, created an innovative sensor using three key technological advances:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Aluminum sensor chips<\/strong>: Unlike traditional gold-based sensors, aluminum enables detection across a much wider wavelength range from ultraviolet to near-infrared<\/li>\n\n\n\n<li><strong>Graphene oxide decoration<\/strong>: The sensor surface is enhanced with graphene oxide, which improves molecule adsorption through its hexagonal ring structure<\/li>\n\n\n\n<li><strong>Violet light technology<\/strong>: Using 430nm violet light instead of conventional red\/near-infrared light increases detection sensitivity<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Remarkable Results: Sub-ppb Detection Achieved<\/strong><\/h2>\n\n\n\n<p>The new sensor demonstrated exceptional performance, detecting:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>0.7 ppbv of methyl jasmonate<\/strong>&nbsp;&#8211; representing a 4x improvement over previous methods<\/li>\n\n\n\n<li><strong>0.28 ppbv of methyl salicylate<\/strong>&nbsp;&#8211; achieving sub-ppb sensitivity<\/li>\n<\/ul>\n\n\n\n<p>The graphene oxide enhancement doubled the detection signal for MeJA compared to undecorated sensors, while also improving MeSA detection.&nbsp;The sensor provides rapid, real-time results within 30-40 seconds and operates through reversible adsorption, allowing for continuous monitoring.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Applications and Future Impact<\/strong><\/h2>\n\n\n\n<p>This ultra-sensitive detection capability enables several breakthrough applications:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Early disease detection<\/strong>: Farmers could identify plant infections before visible symptoms appear<\/li>\n\n\n\n<li><strong>Pest monitoring<\/strong>: Real-time detection of insect damage allows for targeted interventions<\/li>\n\n\n\n<li><strong>Crop development<\/strong>: Researchers can develop more resilient plant varieties by monitoring stress responses<\/li>\n\n\n\n<li><strong>Environmental monitoring<\/strong>: The technology supports ecosystem health assessment through plant VOC analysis<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Significance for Agriculture and Beyond<\/strong><\/h2>\n\n\n\n<p>The ability to detect plant stress signals at such low concentrations represents a major advance toward precision agriculture. This non-destructive monitoring approach could help farmers optimize crop health, reduce pesticide use, and improve yields through early intervention strategies.<\/p>\n\n\n\n<p>The research shows that combining advanced materials science with innovative optical techniques can solve real-world problems. This approach could potentially transform how we monitor and protect plant health in agricultural and environmental applications.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u690d\u7269\u304c\u767a\u3059\u308b\u3054\u304f\u5fae\u91cf\u306a\u300cSOS\u30b5\u30a4\u30f3\u300d\u3092\u30ad\u30e3\u30c3\u30c1\u3067\u304d\u308b\u3001\u30bb\u30f3\u30b5\u30fc\u3092\u958b\u767a\u3057\u307e\u3057\u305f\u3002This sensor can detect plant stress signals at unprecedented sensitivity levels. It opens new possibilities for precision agriculture and plant health monitoring.<\/p>\n","protected":false},"author":1,"featured_media":6284,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[9],"tags":[15,16],"class_list":["post-6283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-environmental-technology","tag-measurement-devices"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/06\/image-1.png?fit=1038%2C316&ssl=1","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":6956,"url":"https:\/\/tuat-chemphys.net\/?p=6956","url_meta":{"origin":6283,"position":0},"title":"Surface Plasmon Resonance sensors for highly selective detection of carboxylic acids \u2014 SPR\u30bb\u30f3\u30b5\u30fc\uff1a\u9162\u9178\u306a\u3069\u306e\u30ab\u30eb\u30dc\u30ad\u30b7\u30eb\u57fa\u3092\u6301\u3064\u5206\u5b50\u306e\u9ad8\u9078\u629e\u7684\u691c\u51fa","author":"unet","date":"2025-11","format":false,"excerpt":"\u672c\u7814\u7a76\u306f\u3001\u8868\u9762\u30d7\u30e9\u30ba\u30e2\u30f3\u5171\u9cf4\uff08SPR\uff09\u30bb\u30f3\u30b5\u30fc\u306b\u30dd\u30ea\u30a8\u30c1\u30ec\u30f3\u30a4\u30df\u30f3\uff08PEI\uff09\u3092\u88c5\u98fe\u3059\u308b\u3053\u3068\u3067\u3001\u9162\u9178\u306a\u3069\u306e\u30ab\u30eb\u30dc\u30ad\u30b7\u30eb\u57fa\u3092\u6301\u3064\u5206\u5b50\u3092\u9ad8\u9078\u629e\u7684\u306b\u691c\u51fa\u3067\u304d\u308b\u3053\u3068\u3092\u793a\u3057\u307e\u3057\u305f\u3002This work demonstrates that decorating SPR sensors with PEI enables highly selective detection of carboxylic acid like acetic acid.","rel":"","context":"In &quot;Research Topics&quot;","block_context":{"text":"Research Topics","link":"https:\/\/tuat-chemphys.net\/?cat=9"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/tuat-chemphys.net\/wp-content\/uploads\/2025\/11\/image-4.png?fit=387%2C210&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":3764,"url":"https:\/\/tuat-chemphys.net\/?p=3764","url_meta":{"origin":6283,"position":1},"title":"Stem cutting delivers particles to plants! \u830e\u5207\u65ad\u306b\u3088\u308b\u690d\u7269\u3078\u306e\u5fae\u7c92\u5b50\u8f38\u9001\u3001\u65b0\u305f\u306a\u65b9\u6cd5","author":"wl","date":"2023-12","format":false,"excerpt":"\u30ca\u30ce\u7c92\u5b50\u3060\u3051\u3067\u306a\u304f\u30b5\u30d6\u30df\u30af\u30ed\u30f3\u7c92\u5b50\u3082\u8f38\u9001\u53ef\u80fd \ud83c\udf45 \u30c8\u30de\u30c8\u3060\u3051\u3067\u306a\u304f\u4ed6\u306e\u98df\u7269\u4f5c\u7269\u306b\u3082\u9069\u7528\u53ef\u80fd Stem Cutting: A Novel Route for Delivering Sub- and Micrometer-Scale Particles to Plants= This method 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