{"id":3328,"date":"2026-06-26T21:35:28","date_gmt":"2026-06-26T21:35:28","guid":{"rendered":"https:\/\/durhammovinghub.com\/?p=3328"},"modified":"2026-06-26T21:35:28","modified_gmt":"2026-06-26T21:35:28","slug":"mary-dell-chilton-nc-biochemist-who-revolutionized-agriculture-dies-at-87","status":"publish","type":"post","link":"https:\/\/durhammovinghub.com\/?p=3328","title":{"rendered":"Mary-Dell Chilton, NC biochemist who revolutionized agriculture, dies at 87"},"content":{"rendered":"

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Read our AI Policy.<\/a><\/p>\n

Mary-Dell Chilton was determined to challenge a prevailing scientific theory: that a bacterium could alter the genes of trees.<\/p>\n

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But as she set out to prove the theory wrong, she instead discovered its truth \u2014 and in the process, helped turn science fiction into reality. Chilton, who died at 87 on Wednesday, June 24, at her home in Carrboro, led the team that created the first genetically modified plants, a breakthrough that would eventually lead to crops with increased yields<\/a> and drought resistance.<\/p>\n

Born in 1939 in Indianapolis, Chilton grew up in Southern Pines with her grandmother, Henrietta Dell Hayes. Mark Chilton, Mary-Dell Chilton\u2019s son, calls Hayes \u201cprobably the single biggest influence\u201d of his mother\u2019s life.<\/p>\n

Hayes was a successful businesswoman in the 1940s and 50s, selling high-end ladies\u2019 clothing to women drawn to the prominent local golfing scene.<\/p>\n

Hayes\u2019 example inspired Chilton to dream bigger, even as science was still largely inaccessible to women.<\/p>\n

\u201c<\/b>My mother always said that (Hayes) showed her by her actions that women do things,\u201d Mark Chilton said.<\/p>\n

After earning her B.S. in chemistry<\/a> from the University of Illinois, Urbana-Champaign, Chilton completed her PhD in chemistry at the same university in 1967.<\/p>\n

By the early 1970s, while a professor at the University of Washington, she was determined to disprove a theory that a bacterium, Agrobacterium tumefaciens<\/i>, causes a disease in trees by modifying their DNA.<\/p>\n

\u201cShe thought that this was obviously wrong and would be easy to disprove,\u201d Mark Chilton said. \u201cShe thought it was wrong, because well, it\u2019s kind of hard to believe the implications \u2026 and yet here we are. It changed agriculture forever.\u201d<\/p>\n

Mary-Dell Chilton showed that the bacterium actually does insert its DNA into the trees. Then in 1979<\/a>, she developed a way to remove the harmful DNA the bacterium inserts and replace it with desirable DNA, such as genes that promote drought resistance.<\/p>\n

This led Chilton and a team of researchers to design the first genetically modified plants in 1982 after she became a professor at Washington University in St. Louis.<\/p>\n

Bayer scientist Cami Ryan, whose work relies on Mary-Dell Chilton\u2019s advancements, highlighted their importance.<\/p>\n

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\u201cMary-Dell Chilton didn\u2019t just advance plant science; she rewrote the playbook,\u201d Ryan said. \u201cShe turned a plant tumor bacterium into a workhorse for traits that help keep harvests coming. Her legacy lives in every field that grows a little stronger because she refused to accept \u2018that\u2019s impossible\u2019 as an answer.\u201d<\/p>\n

That persistence in overcoming \u201cthe impossible\u201d was evident throughout her life.<\/p>\n

\u201cYou can\u2019t stop me,\u201d Chilton said when she was inducted into the National Inventors Hall of Fame<\/a> in 2015. \u201cWhen I\u2019m after something, I work on it endlessly until I get it.\u201d<\/p>\n

For instance, she was an avid canoer and made her last trip through Stillwater Canyon on the Green River in Utah at age 76, entirely under her own power, according to Mark Chilton.<\/p>\n

\u201cShe did wind up in the hospital, but she made it all the way,\u201d Mark Chilton said. \u201cI tried and tried to get her to stop paddling and let me just paddle the canoe, but she would not. But \u2026 that\u2019s a part of who she is, too, you know. She wasn\u2019t about to be chauffeured, even if she was 76.\u201d<\/p>\n

After her breakthroughs in the 1980s, she moved to the private sector at Syngenta Biotechnology in Research Triangle Park, eventually becoming vice president of agricultural biotechnology and principal scientist.<\/p>\n

In 2013, she was named the Tar Heel of the Year<\/a> by The News & Observer, recognizing her as one of the most significant contributors to North Carolina and the Triangle.<\/p>\n

Mark Chilton, reflecting on his mother\u2019s love for intellectual challenge, described her passion for unraveling mysteries \u2014 both scientific and personal.<\/p>\n

\u201cMy mother really loved all kinds of puzzles, and she would do many of the News & Observer\u2019s daily puzzles every day, keeping big notebooks full of them,\u201d he said. \u201cI think the mysteries of DNA were just like that to her \u2026 it was a puzzle, and she wanted to figure it out.\u201d<\/p>\n

Chilton received the National Medal of Technology and Innovation<\/a> from President Joe Biden; the Golden Goose Award<\/a> from the American Association for the Advancement of Science; and the World Food Prize<\/a>, which recognizes the individual who has most improved the quantity or quality of food worldwide.<\/p>\n

Chilton is survived by her sons, Mark and Andrew, and two grandchildren. Throughout it all, her relationship with her grandmother never faltered.<\/p>\n

\u201cI\u2019ve got stacks of handwritten letters back and forth between the two of them through college and up through my grandmother\u2019s death,\u201d Mark Chilton said. \u201cIf you want to know who my mother really was \u2026 she was the teenager who watched her grandmother do what no other women in town were doing, and learned \u2026 that there was no reason she couldn\u2019t be a PhD in chemistry.\u201d<\/p>\n

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The late Mary-Dell Chilton, a North Carolina biochemist, led creation of the first genetically modified plants, transforming agriculture.<\/p>\n","protected":false},"author":1,"featured_media":3327,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3328","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-read-todays-edition"],"yoast_head":"\nMary-Dell Chilton, NC biochemist who revolutionized agriculture, dies at 87 - Durham Moving Hub<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/durhammovinghub.com\/?p=3328\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mary-Dell Chilton, NC biochemist who revolutionized agriculture, dies at 87 - Durham Moving Hub\" \/>\n<meta property=\"og:description\" content=\"The late Mary-Dell Chilton, a North Carolina biochemist, led creation of the first genetically modified plants, transforming agriculture.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/durhammovinghub.com\/?p=3328\" \/>\n<meta property=\"og:site_name\" content=\"Durham Moving Hub\" \/>\n<meta property=\"article:published_time\" content=\"2026-06-26T21:35:28+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/#\\\/schema\\\/person\\\/bf1f081e7f06a3ab66052e5f6015fd85\"},\"headline\":\"Mary-Dell Chilton, NC biochemist who revolutionized agriculture, dies at 87\",\"datePublished\":\"2026-06-26T21:35:28+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328\"},\"wordCount\":878,\"commentCount\":0,\"image\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/durhammovinghub.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/d0331328eeb69c147cfb4d64999c3ec3.jpg\",\"articleSection\":[\"Read today's Edition\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328\",\"url\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328\",\"name\":\"Mary-Dell Chilton, NC biochemist who revolutionized agriculture, dies at 87 - Durham Moving Hub\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/durhammovinghub.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/d0331328eeb69c147cfb4d64999c3ec3.jpg\",\"datePublished\":\"2026-06-26T21:35:28+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/#\\\/schema\\\/person\\\/bf1f081e7f06a3ab66052e5f6015fd85\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/durhammovinghub.com\\\/?p=3328#primaryimage\",\"url\":\"https:\\\/\\\/durhammovinghub.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/d0331328eeb69c147cfb4d64999c3ec3.jpg\",\"contentUrl\":\"https:\\\/\\\/durhammovinghub.com\\\/wp-content\\\/uploads\\\/2026\\\/06\\\/d0331328eeb69c147cfb4d64999c3ec3.jpg\",\"width\":1200,\"height\":674,\"caption\":\"Mary-Dell Chilton, Tar Heel of the Year, works on e. coli growing in a petri dish at her lab on the Syngenta Biotechnology, Inc. campus in RTP. 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