{"id":67331,"date":"2024-06-06T19:02:09","date_gmt":"2024-06-06T19:02:09","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/06\/06\/this-protist-unfolds-its-neck-up-to-30-times-its-body-length-to-scout-prey\/"},"modified":"2024-06-06T19:02:09","modified_gmt":"2024-06-06T19:02:09","slug":"this-protist-unfolds-its-neck-up-to-30-times-its-body-length-to-scout-prey","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/06\/06\/this-protist-unfolds-its-neck-up-to-30-times-its-body-length-to-scout-prey\/","title":{"rendered":"This protist unfolds its \u2018neck\u2019 up to 30 times its body length to scout prey"},"content":{"rendered":"<div style=\"text-align:center\"><img decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2024\/06\/060624_eg_protist_feat.jpg?fit=800%2C450&amp;ssl=1\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"This protist unfolds its \u2018neck\u2019 up to 30 times its body length to scout prey\" title=\"This protist unfolds its \u2018neck\u2019 up to 30 times its body length to scout prey\" \/><\/div> \r\n<br><br><div data-component=\"video-embed\">\n\t\t\t\t\n\n\n\n\n<p>Oddly, origami could be useful for snagging prey.\u00a0<\/p>\n\n\n\n<p>A single-celled protist called <em>Lacrymaria olor<\/em> uses a helix of pleats folded like origami <a href=\"http:\/\/www.science.org\/doi\/10.1126\/science.adk5511\" target=\"_blank\" rel=\"noopener\">to unspool a necklike protrusion up to 30 times the length of its body<\/a>, or 1.2 millimeters, to quickly snap up food, researchers report in the June 7 <em>Science<\/em>. If a roughly 1.7-meter-tall person could do the same, their neck would reach about halfway up the Statue of Liberty.<\/p>\n\n\n\n<p>The finding could help inspire new robotics, such as tools for microsurgery that can extend and contract inside small body cavities.\u00a0<\/p>\n\n\n<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.email-conversion {\n  border: 1px solid #ffcccb;\n  color: white;\n  margin-top: 50px;\n  background-image: url(\"\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg\");\n  padding: 20px;\n  clear: both;\n}\n\n]]><\/style>\n\n\n\n                        <style class=\"is-layout-flow 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none;\n}\n\nform.zephr-form-content {\n    opacity: .9;\n}\n\nlabel.zephr-form-checkbox-label {\n    font-size: 1.2rem;\n    font-weight: bolder;\n}\n\n.zephr-form-custom-text > h4 {\n    color: black !important;\n}\n\nbutton.zephr-form-button {\n    background: #d4441f !important;\n    font-weight: bold !important;\n    text-transform: uppercase !important;\n}\n\nlabel.zephr-payment-form-checkbox-label {\n    color: white;\n    font-size: 1.6rem;\n}\n\n.zephr-form-content {\n    background:#2f537f;\n    \n}\n\n.zephr-payment-form-custom-text {\n    margin-top: .2rem;\n}\n\n.zephr-payment-form-checkbox-label {\n    display: flex;\n    align-items: center;\n    font-family: var(--zephr-typography-body-font), var(--zephr-typography-body-fallbackFont);\n    color: white;\n    font-weight: bold;\n}]]><\/style>\n                        \n                        \n<\/aside>\n\n\n<p>Seeing <em>L. olor<\/em>\u2019s neck in action is an exercise in speed. The organism waves its bulbous dome to-and-fro in rapid, snakelike movements as its neck lengthens and retracts. Such quickness and the organism\u2019s ability to do it over and over again \u201csets <em>Lacrymaria<\/em> apart,\u201d says Eliott Flaum, a biophysicist at Stanford University. Other organisms with similar reach move slowly or are unable to reverse any extensions.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><p>\n<div class=\"youtube-embed\" data-video_id=\"enCTjCyOsDA\"><iframe loading=\"lazy\" title=\"Watch these protists extend their &quot;necks&quot; as they scout for food | Science News\" width=\"696\" height=\"392\" src=\"https:\/\/www.youtube.com\/embed\/enCTjCyOsDA?feature=oembed&#038;enablejsapi=1\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/p><figcaption class=\"wp-element-caption\">Single-celled <em>Lacrymaria olor<\/em> rapidly shoot out long projections in their search for food. A new study shows that this \u201cneck\u201d has an origami-like structure made of curved creases that give the organism enough cellular material to quickly extend and retract.<\/figcaption><\/figure>\n\n\n\n<p><em>L. olor<\/em>\u2019s neck-stretching ability has been known for more than a century, says Vittorio Boscaro, a microbiologist at the University of British Columbia in Vancouver. \u201cMany times, we notice some crazy feature that we cannot explain, and that\u2019s basically where we stop. It\u2019s nice that papers are coming out trying t actually explain how the crazy thing [happens]\u2026. In this case, the answer is really cool.\u201d\u00a0<\/p>\n\n\n\n<p>The big question was how the organism managed to build and retract its neck so quickly. \u201cSometimes you watch a video, and it poses a question that you\u2019re just bound to answer. You must answer it because it just feels paradoxical,\u201d says Manu Prakash, a bioengineer also at Stanford. \u201cWhere does the material [to lengthen the neck] come from? How is that physically possible? Is it defying any laws? It doesn\u2019t make sense.\u201d<\/p>\n\n\n\n<p>With a combination of microscopy and live imaging, Flaum and Prakesh found that the protist\u2019s long proboscis is covered in long polymers called microtubules, which give the single-celled organism its shape. Layers of microtubules are wrapped around the protrusion in a helix.<\/p>\n\n\n\n<p>Seeing the helical structure made the team wonder, \u201cIs that a spring? Is that a coil? What\u2019s happening?\u201d Flaum says.<\/p>\n\n\n\n<p>The answer turned out to be neither. On a trip to Japan, Prakash saw chochin lanterns made of paper folded into pleats. \u201cAnd it just kind of clicked,\u201d he says. <em>L. olor<\/em>\u2019s helical microtubules were folded like origami.<\/p>\n\n\n\n<p>Prakash and Flaum went to an art store and bought paper to test the idea, folding paper mimics that they\u2019ve dubbed \u201cLacrygami.\u201d With paper representation, the team showed that as each curved pleat in <em>L. olor<\/em>\u2019s neck unfolds, the structure rapidly unspools.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><p>\n<div class=\"youtube-embed\" data-video_id=\"iUxWmk_E6BA\"><iframe loading=\"lazy\" title=\"Watch Lacrymaria olor\u2019s neck extend | Science News\" width=\"696\" height=\"392\" src=\"https:\/\/www.youtube.com\/embed\/iUxWmk_E6BA?feature=oembed&#038;enablejsapi=1\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<\/p><figcaption class=\"wp-element-caption\">Curved origami-like pleats make it possible for the single-celled protist <em>Lacrymaria olor<\/em> to extend its neck up to 30 times its body length in less than 30 seconds. Using glass needles, researchers in this video stretch the organism\u2019s neck to about a tenth of its capability. <em>L. olor<\/em>\u2019s body twists as the neck unspools.<\/figcaption><\/figure>\n\n\n\n<p>There\u2019s no known real-world comparison, Prakash says. The origami-like geometry is different than finger trap toys or a slinky. The closest analogy is a fishing rod, which has one spool with fishing line wrapped around it and another that throws the line out into the water, he says. Or if the folds in a bendy straw were twisted.<\/p>\n\n\n\n\n\n<p>How the unfolding gets started is an open question, says C\u00e9cile Sykes, a biophysicist at CNRS and l\u2019Ecole Normale Sup\u00e9rieure in Paris. It\u2019s possible that short, vibrating hairlike structures on the outside of the cell help things get moving.\u00a0<\/p>\n\n\n\n<p>Also unknown is how <em>L. olor<\/em>\u2019s origami neck comes together or how the organism detects prey and feeds on things like algae. \u201cThese mysteries are like onions,\u201d Prakash says. \u201cWe peel onions.\u201d<\/p>\n\n\n\n\t\t\t<\/div>\r\n<br>\r\n<br><a href=\"https:\/\/www.sciencenews.org\/article\/protist-neck-origami-unfold-lacrymaria\">Source link <\/a>","protected":false},"excerpt":{"rendered":"<p>Oddly, origami could be useful for snagging prey.\u00a0 A single-celled protist called Lacrymaria olor uses a helix of pleats folded like origami to unspool a necklike protrusion up to 30 times the length of its body, or 1.2 millimeters, to quickly snap up food, researchers report in the June 7 Science. If a roughly 1.7-meter-tall [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":67332,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","fifu_image_url":"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2024\/06\/060624_eg_protist_feat.jpg?fit=800%2C450&ssl=1","fifu_image_alt":"","footnotes":""},"categories":[606],"tags":[2776,25745,7811,11039,63347,24160,272,63348],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/67331"}],"collection":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/comments?post=67331"}],"version-history":[{"count":1,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/67331\/revisions"}],"predecessor-version":[{"id":67333,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/67331\/revisions\/67333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media\/67332"}],"wp:attachment":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media?parent=67331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/categories?post=67331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/tags?post=67331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}