{"id":1077,"date":"2025-05-16T17:02:07","date_gmt":"2025-05-16T08:02:07","guid":{"rendered":"https:\/\/shibainugeeks.com\/?p=1077"},"modified":"2025-06-02T15:46:27","modified_gmt":"2025-06-02T06:46:27","slug":"%e4%b8%ad%e6%88%bf%e6%b8%a9%e6%b3%89%e3%81%b8%e3%83%90%e3%82%af%e3%83%86%e3%83%aa%e3%82%a2%e3%82%bb%e3%83%ab%e3%83%ad%e3%83%bc%e3%82%b9%e3%81%ae%e8%aa%bf%e6%9f%bb%e3%81%ab%e8%a1%8c%e3%81%a3%e3%81%a6","status":"publish","type":"post","link":"https:\/\/shibainugeeks.com\/?p=1077","title":{"rendered":"\u4e2d\u623f\u6e29\u6cc9\u3078\u30d0\u30af\u30c6\u30ea\u30a2\u30bb\u30eb\u30ed\u30fc\u30b9\u306e\u8abf\u67fb\u306b\u884c\u3063\u3066\u304d\u307e\u3057\u305f\u30fcA field trip to Nakabusa Onsen for bacterial cellulose research!"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><br>GW\u306f\u9577\u91ce\u30fb\u4e2d\u623f\u6e29\u6cc9\u30672\u6cca3\u65e5\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u30ef\u30fc\u30af\u3067\u3057\u305f\u2668<br>\u4eca\u56de\u306f\u3001\u597d\u71b1\u6027\u306e\u5316\u5b66\u5408\u6210\u7d30\u83cc\u304c\u3064\u304f\u308b\u30bb\u30eb\u30ed\u30fc\u30b9\u306e\u89b3\u5bdf\u304c\u76ee\u7684\u3002\u6628\u5e74\u306b\u7d9a\u304d\u30012\u56de\u76ee\u306e\u8abf\u67fb\u3068\u306a\u308a\u307e\u3057\u305f\ud83d\udc69\u200d\ud83d\udd2c<br>I spent my Golden Week on a three-day, two-night field trip to Nakabusa Onsen in Nagano .<br>The purpose of this trip was to observe cellulose produced by thermophilic chemoautotrophic bacteria.<br>It was my second survey following last year\u2019s! <\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"602\" src=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250505_032412184.jpg\" alt=\"\" class=\"wp-image-1084\" style=\"width:345px;height:auto\" srcset=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250505_032412184.jpg 800w, https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250505_032412184-300x226.jpg 300w, https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250505_032412184-768x578.jpg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">1\u65e5\u3042\u305f\u308a7\u6642\u9593\u3001\u3058\u3063\u304f\u308a\u3068\u86cd\u5149\u9855\u5fae\u93e1\u3068\u5411\u304d\u5408\u3046\u65e5\u3005\u3002\u6e29\u6cc9\u6c34\u306f\u4e0a\u6d41\u304b\u3089\u4e0b\u6d41\u306b\u304b\u3051\u306685\u2103\u304b\u308965\u2103\u3078\u3068\u5f90\u3005\u306b\u6e29\u5ea6\u304c\u4e0b\u304c\u3063\u3066\u3044\u304d\u307e\u3059\u304c\u3001\u305d\u306e\u6e29\u5ea6\u5e2f\u306b\u3088\u3063\u3066\u3001\u89b3\u5bdf\u3055\u308c\u308b\u30b9\u30c8\u30ea\u30fc\u30de\uff08\u30d0\u30a4\u30aa\u30d5\u30a3\u30eb\u30e0\u306e\u4e00\u7a2e\uff09\u306e\u8272\u304c\u7570\u306a\u308b\u306e\u304c\u5370\u8c61\u7684\u3067\u3059\u3002\u9ed2\u3001\u767d\u3001\u7dd1\u2026\u2026\u305d\u308c\u305e\u308c\u7570\u306a\u308b\u5fae\u751f\u7269\u7fa4\u304c\u5b58\u5728\u3057\u3066\u3044\u307e\u3059\uff08\u90e8\u5206\u7684\u306b\u306f\u540c\u3058\uff09\u3002<br>I spent about seven hours a day carefully observing samples under a fluorescence microscope.<br>The hot spring water gradually cools from 85\u00b0C upstream to around 65\u00b0C downstream, and it was fascinating to see how the color of the streamers (a type of biofilm) changed with temperature.<br>Black, white, green\u2026 each color indicates the presence of different microbial communities \u2014 though in some areas, there is overlap.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"800\" src=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_235448118.MP-1-1.jpg\" alt=\"\" class=\"wp-image-1081\" style=\"width:259px;height:auto\" srcset=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_235448118.MP-1-1.jpg 602w, https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_235448118.MP-1-1-226x300.jpg 226w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><figcaption class=\"wp-element-caption\">\u30d6\u30e9\u30c3\u30af\u30b9\u30c8\u30ea\u30fc\u30de Black Strem<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"800\" src=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_010450547-1.jpg\" alt=\"\" class=\"wp-image-1082\" style=\"width:258px;height:auto\" srcset=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_010450547-1.jpg 602w, https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_010450547-1-226x300.jpg 226w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><figcaption class=\"wp-element-caption\">\u30db\u30ef\u30a4\u30c8\u30b9\u30c8\u30ea\u30fc\u30de White Stream<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"800\" src=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_235715731.jpg\" alt=\"\" class=\"wp-image-1083\" style=\"width:260px;height:auto\" srcset=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_235715731.jpg 602w, https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_235715731-226x300.jpg 226w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><figcaption class=\"wp-element-caption\">\u30b0\u30ea\u30fc\u30f3\u30b9\u30c8\u30ea\u30fc\u30de Green Stream<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u3069\u306e\u6e29\u5ea6\u5e2f\u306e\u30b9\u30c8\u30ea\u30fc\u30de\u30fc\u306b\u3082\u3001\u30bb\u30eb\u30ed\u30fc\u30b9\u3068\u601d\u308f\u308c\u308b\u7e4a\u7dad\u69cb\u9020\u304c\u898b\u3089\u308c\u307e\u3059\u3002\u63a1\u53d6\u3057\u305f\u30b9\u30c8\u30ea\u30fc\u30de\u30fc\u306f\u305d\u306e\u5834\u3067\u30b9\u30c3\u3068\u3059\u304f\u3044\u4e0a\u3052\u3001\u3059\u3050\u306b\u89b3\u5bdf\u3002\u306a\u305c\u300c\u305d\u306e\u5834\u89b3\u5bdf\u300d\u304c\u5fc5\u8981\u306a\u306e\u304b\u3068\u3044\u3046\u3068\u3001\u69cb\u9020\u304c\u3068\u3066\u3082\u58ca\u308c\u3084\u3059\u3044\u304b\u3089\u3067\u3059\u3002<br>In streamers across all temperature ranges, we observed fibrous structures that appear to be cellulose.<br>The streamers were carefully scooped up and immediately observed on-site.<br>This immediate observation is crucial because the structures are extremely fragile and can easily collapse.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"602\" height=\"800\" src=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_234714417.jpg\" alt=\"\" class=\"wp-image-1078\" style=\"width:301px;height:auto\" srcset=\"https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_234714417.jpg 602w, https:\/\/shibainugeeks.com\/wordpress_idayu\/wp-content\/uploads\/2025\/05\/PXL_20250504_234714417-226x300.jpg 226w\" sizes=\"auto, (max-width: 602px) 100vw, 602px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u4eca\u5f8c\u3001\u8a73\u3057\u3044\u5206\u6790\u304c\u5f85\u3063\u3066\u3044\u307e\u3059\ud83d\udd0e<br>\u30bb\u30eb\u30ed\u30fc\u30b9\u306e\u7d50\u6676\u6027\u304c\u3042\u308b\u306e\u304b\u3001\u307e\u305f\u4f55\u578b\u306e\u7d50\u6676\u69cb\u9020\u306a\u306e\u304b\u2026\u2026\u975e\u5e38\u306b\u8208\u5473\u6df1\u3044\u30dd\u30a4\u30f3\u30c8\u3067\u3059\ud83d\udc40<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3061\u306a\u307f\u306b\u3001\u9ed2\u3084\u767d\u306e\u30b9\u30c8\u30ea\u30fc\u30de\u30fc\u306b\u751f\u606f\u3059\u308b\u5fae\u751f\u7269\u306f\u3001\u7dd1\u8272\u306e\u30b9\u30c8\u30ea\u30fc\u30de\u30fc\uff08\u4e3b\u306b\u30b7\u30a2\u30ce\u30d0\u30af\u30c6\u30ea\u30a2\uff09\u3088\u308a\u3082\u7cfb\u7d71\u7684\u306b\u53e4\u3044\u3068\u3055\u308c\u308b\u7d30\u83cc\u7fa4\u3002\u597d\u71b1\u6027\u306e\u5316\u5b66\u5408\u6210\u7d30\u83cc\uff01<br><br>\u3064\u307e\u308a\u3001\u30bb\u30eb\u30ed\u30fc\u30b9\u5408\u6210\u80fd\u529b\u306e\u9032\u5316\u306b\u8feb\u308b\u91cd\u8981\u306a\u624b\u304c\u304b\u308a\u306b\u306a\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8a73\u3057\u3044\u7814\u7a76\u6210\u679c\u306f\u30017\u6708\u306e\u30bb\u30eb\u30ed\u30fc\u30b9\u5b66\u4f1a\u306b\u3066\u3001\u5171\u540c\u7814\u7a76\u8005\u306e\u677e\u6d66\u5148\u751f\u304c\u767a\u8868\u4e88\u5b9a\u3067\u3059\uff08\u304a\u305d\u3089\u304f\u30dd\u30b9\u30bf\u30fc\u3067\u306e\u767a\u8868\u306b\u306a\u308a\u307e\u3059\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Detailed analyses are coming up soon \ud83d\udd0e<br>One of the key questions is whether the cellulose has crystallinity and, if so, what type of crystal structure it exhibits \u2014 a very intriguing point! <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Interestingly, the microbes inhabiting the black and white streamers are considered to be phylogenetically older than those found in the green streamers, which are mainly composed of cyanobacteria.<br>These are thermophilic chemoautotrophic bacteria!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This research could provide important insights into the evolutionary origins of cellulose biosynthesis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The detailed results will be presented at the Cellulose Society meeting in July, where our collaborator, Professor Matsuura, is scheduled to give a presentation \u2014 most likely in poster format.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GW\u306f\u9577\u91ce\u30fb\u4e2d\u623f\u6e29\u6cc9\u30672\u6cca3\u65e5\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u30ef\u30fc\u30af\u3067\u3057\u305f\u2668\u4eca\u56de\u306f\u3001\u597d\u71b1\u6027\u306e\u5316\u5b66\u5408\u6210\u7d30\u83cc\u304c\u3064\u304f\u308b\u30bb\u30eb\u30ed\u30fc\u30b9\u306e\u89b3\u5bdf\u304c\u76ee\u7684\u3002\u6628\u5e74\u306b\u7d9a\u304d\u30012\u56de\u76ee\u306e\u8abf\u67fb\u3068\u306a\u308a\u307e\u3057\u305f\ud83d\udc69\u200d\ud83d\udd2cI spent my Golden Week on a thr [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1085,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[12,5,8],"tags":[],"class_list":["post-1077","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-12","category-5","category-8"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"GW\u306f\u9577\u91ce\u30fb\u4e2d\u623f\u6e29\u6cc9\u30672\u6cca3\u65e5\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u30ef\u30fc\u30af\u3067\u3057\u305f\u2668\u4eca\u56de\u306f\u3001\u597d\u71b1\u6027\u306e\u5316\u5b66\u5408\u6210\u7d30\u83cc\u304c\u3064\u304f\u308b\u30bb\u30eb\u30ed\u30fc\u30b9\u306e\u89b3\u5bdf\u304c\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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