{"id":43839,"date":"2024-11-14T09:40:04","date_gmt":"2024-11-14T08:40:04","guid":{"rendered":"http:\/\/eb826090-9145-407b-a05e-0ab7ac554e8c"},"modified":"2024-11-14T10:27:32","modified_gmt":"2024-11-14T09:27:32","slug":"why-a-us-horror-fiction-writer-just-spent-three-nights-with-an-elephant-sized-piece-of-flesh-that-smells-like-death","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/rss_feed\/why-a-us-horror-fiction-writer-just-spent-three-nights-with-an-elephant-sized-piece-of-flesh-that-smells-like-death\/","title":{"rendered":"Why a US horror fiction writer just spent three nights with an elephant-sized piece of flesh that smells like death"},"content":{"rendered":"<p class=\"rssexcerpt\">Professor G. Eric Schaller, a horror fiction writer and molecular biologist, was one of a team of scientists on a mission to find out more about the putrid scent of titan arum \u2013 the corpse flower. <\/p><p class=\"rssauthor\">By Daniel Graham\n      <\/p><p class=\"rssbyline\">Published: Thursday, 14 November 2024 at 08:40 AM<\/p><hr class=\"no-tts wp-block-separator\"\/><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html> <head\/> <body> <p><strong>The unusual scent of titan arum (<em>Amorphophallus titanum<\/em>), more commonly known as the corpse flower for its strikingly putrid smell, has fascinated scientists for a very long time. <\/strong><\/p> <p>They&#8217;ve also been intrigued by the plant\u2019s peculiar ability to warm itself up just before flowering (itself another curiosity, for it blooms only very rarely), using a process called thermogenesis \u2013 an unusual trait among plants, which remains poorly understood.<\/p> <p>In a recent <a href=\"https:\/\/academic.oup.com\/pnasnexus\/advance-article\/doi\/10.1093\/pnasnexus\/pgae492\/7874716\">study<\/a> led by New Hampshire&#8217;s Dartmouth College, researchers have delved into the flower\u2019s inner workings to uncover the genetic pathways and biological processes that drive both heat production and odour release during its bloom.<\/p> <p>Published in\u00a0<em>PNAS Nexus<\/em>, the paper, led by Professor G. Eric Schaller (a molecular biologist and horror fiction writer), reveals a new and significant ingredient of titan arum\u2019s pungent scent \u2013 an organic compound known as putrescine.<\/p> <figure class=\"wp-block-video\"> <video controls=\"\" poster=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/11\/Corpse-flower-scaled.jpg\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/11\/Corpse-flower.mp4\"\/> <figcaption class=\"wp-element-caption\"> Watch: a titan arum \u2013 or corpse flower \u2013 draws the crowds at St. Louis, Missouri, USA on 13 July 2022\/Getty <\/figcaption> <\/figure> <h2 class=\"wp-block-heading\">A warm, putrid scent<\/h2> <p>Schaller and his team seized the opportunity of several blooms by &#8216;Morphy&#8217;, a 21-year-old titan arum\u00a0housed at Dartmouth\u2019s <a href=\"https:\/\/www.dartmouth.edu\/greenhouse\/\">Life Sciences Greenhouse<\/a> in New Hampshire, USA, to collect tissue samples for genetic and chemical analysis.<\/p> <p>Interestingly, the titan arum isn\u2019t a single flower, say the researchers, it\u2019s a cluster of many small flowers hidden within a colossal central structure called the spadix, which can reach up to three metres (12 feet) in height \u2013 that&#8217;s as tall as a large <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/mammals\/asian-elephants-guide\">Asian elephant<\/a>.<\/p> <p>This spadix is a key visual feature of the plant and, when it finally blooms after a typical wait of five to seven years, it does so overnight. \u201cThe blooms are rare and short-lived, so we only have a small window to study these phenomena,\u201d Schaller explains.<\/p> <p>At the base of the spadix, a ruffled petal-like layer called the spathe unfurls, forming a cup around the stalk with a deep-red or maroon interior. Shortly after, the spadix begins to heat up, rising up to 20 degrees Fahrenheit above the surrounding air temperature. This warmth is followed by the plant\u2019s signature foul scent \u2013 a blend of sulphur-based compounds that attract flies and carrion beetles to aid in pollination.<\/p> <figure class=\"wp-block-image size-large\">  <figcaption class=\"wp-element-caption\"> The titan arum flower can grown up to 3m tall \u2013 the same height as a large Asian elephant\/Getty <\/figcaption> <\/figure> <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.discoverwildlife.com\/plant-facts\/weirdest-plants\">Weirdest plants in the world<\/a><\/li> <li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/which-animal-has-the-best-sense-of-smell\">Which animal has the best sense of smell?<\/a><\/li> <li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/insects-invertebrates\/smelly-insects\">What are the smelliest insects?<\/a><storefront-html class=\"description\" ng-version=\"18.0.5\" style=\"box-sizing: border-box; position: relative; display: flex; -webkit-user-select: none; -webkit-user-drag: none; font-size: 20px; line-height: 28px; margin-bottom: 20px; caret-color: rgb(15, 44, 59); color: rgb(15, 44, 59); font-family: open-sans;\"\/><\/li> <\/ul> <h2 class=\"wp-block-heading\">Into the flower<\/h2> <p>When Morphy bloomed in 2016, the research team gathered nine tissue samples over three nights, including sections from the lip and base of the spathe and the spadix&#8217;s towering spike, known as the appendix. Two additional leaf samples were later added to the collection.<\/p> <p>Alveena Zulfiqar, an exchange research scholar in Schaller\u2019s lab, developed a technique to extract high-quality RNA (a molecule found in most living organisms) from the tissue samples. This enabled the team to analyse RNA sequences and reveal the roles specific genes play in producing both heat and the characteristic odour.<\/p> <p>\u201cThis helps us identify which genes are active, especially those involved in heating the appendix and emitting scent,\u201d explains Schaller, whose work as a molecular biologist explores how plant hormones regulate growth and environmental response. Schaller, also a writer of horror fiction, says, \u201cthe corpse flower fits well in both these worlds.\u201d<\/p> <p>Thermogenesis \u2013 the ability to produce heat \u2013 is common in animals but rare among plants. Schaller explains that in animal cells, proteins known as uncoupling proteins disrupt the storage of chemical energy, releasing it instead as heat.<\/p> <p>The team\u2019s RNA analysis showed that genes linked to plant analogues of these proteins, called alternative oxidases, exhibited higher expression during flowering, especially in the appendix. Genes involved in sulphur transport and metabolism were also particularly active at this stage.<\/p> <figure class=\"wp-block-video\"> <video controls=\"\" poster=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/11\/Titan-arum-in-flower-at-Kew-Garden-scaled.jpg\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/11\/Titan-arum-in-flower-at-Kew-Garden.mp4\"\/> <figcaption class=\"wp-element-caption\"> Watch: a titan arum in flower at Kew, London\/Getty <\/figcaption> <\/figure> <p>To further investigate the biochemical processes at work, researchers isolated tissues from Morphy during a later bloom, collaborating with the University of Missouri to measure amino acid levels. The analysis revealed high concentrations of methionine, a sulphur-containing amino acid that can easily vaporise upon heating, contributing to the plant\u2019s strong odour. Methionine levels dropped noticeably in tissues sampled a few hours later.<\/p> <p>A surprise finding was the elevated levels of another amino acid in the spathe, serving as a precursor to putrescine \u2013 a compound found in decaying animals.<\/p> <figure class=\"wp-block-image size-large\"> <img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"682\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/11\/June-18-2024-shows-the-flowering-of-the-Titan-Arum-aka-Titan-Phallus-or-Amorphophallus-titanium-at-the-Princess-of-Wales-Conservatory-at-Kew-Gardens-in-London.jpg\" alt=\"Titan arum flowering at the Princess of Wales Conservatory at Kew Gardens, in London\" class=\"wp-image-115243\"\/> <figcaption class=\"wp-element-caption\"> A titan arum specimen flowering in the Princess of Wales Conservatory at Kew, London\/Getty <\/figcaption> <\/figure> <h2 class=\"wp-block-heading\">What&#8217;s next?<\/h2> <p>This study marks the first time researchers have decoded the titan arum\u2019s scent at a molecular level, identifying the processes through which it regulates temperature and how its different parts contribute to the odour that attracts <a href=\"https:\/\/www.discoverwildlife.com\/plant-facts\/pollination-guide\">pollinators<\/a>.<\/p> <p>Morphy holds yet more secrets, Schaller says, as his team now aims to uncover the signals that predict blooming and whether plants housed together might synchronise their blooms to increase the odour and draw more pollinators.<\/p> <figure class=\"wp-block-image size-large\"> <img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/11\/Botanical-Garden-in-Villers-les-Nancy.jpeg\" alt=\"Titan arum\" class=\"wp-image-115250\"\/> <figcaption class=\"wp-element-caption\"> A titan arum blossoms for the first time at the Botanical Garden in Villers-les-Nancy, France on 11 July 2023\/Getty <\/figcaption> <\/figure> <p><em>Main image: a close-up shot of the spathe on a titan arum at Arnold Arboretum, Boston, USA\/Jessica Rinaldi, Getty<\/em><\/p> <p><strong>More wildlife stories from around the world<\/strong><\/p> <ul class=\"wp-block-list\"> <li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/spiders-orford-ness-england\">When arachnologists visited an old atomic bomb research site in England, they couldn&#8217;t believe what they found<\/a><\/li> <li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/marine-animals\/black-eyed-squid-chile\">Deep-sea scientists just filmed something enormous swimming over the seafloor in Chile<\/a><\/li> <li><a href=\"https:\/\/www.discoverwildlife.com\/environment\/yellowstone-national-park-lake-sediments\">Something critical has just been found at the bottom of a lake in Yellowstone National Park<\/a><\/li> <li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/marine-animals\/robots-whale-vocalisation\">Harvard scientists sent two flying robots on a mission \u2013 and they&#8217;ve just detected something<\/a><\/li> <\/ul> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p>Professor G. 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