{"id":762,"date":"2017-09-25T16:56:11","date_gmt":"2017-09-25T08:56:11","guid":{"rendered":"https:\/\/www.agrinoon.com\/agriculture\/?p=762"},"modified":"2017-09-25T16:56:11","modified_gmt":"2017-09-25T08:56:11","slug":"scientists-unravel-mysteries-dna-replication-corn","status":"publish","type":"post","link":"https:\/\/www.agrinoon.com\/agriculture\/2017\/09\/25\/scientists-unravel-mysteries-dna-replication-corn\/","title":{"rendered":"Scientists unravel mysteries of DNA replication in corn"},"content":{"rendered":"
Keywords:\u00a0Corn , DNA replication , North Carolina State University<\/div>\n
DNA replication is among life\u2019s most important processes. It provids a way for an organism\u2019s genetic material to be reproduced so it can be passed from cell to cell. For the first time, scientists have characterized that process for an entire plant genome.<\/p>\n<\/div>\n
William Thompson is the NC State University plant biologist. He and his colleagues published their findings<\/a> in the Augu<\/span>st issue of The Plant Cell. <\/em>\u00a0It described the process that corn uses to unravel and replicate small segments of its chromosomes at different times.<\/div>\n
<\/div>\n
DNA replication has been well characterized in animal cells. But little has been known about the replication timing programs in plant cells, said Thompson. He is a distinguished University Professor of Plant and Microbial Biology.<\/p>\n<\/div>\n
The research has important implications for developing healthier, higher-yielding corn. Not only that, it also helps explain how a large mass of tightly compacted DNA in a cell\u2019s tiny nucleus can orchestrate plant growth and reproduction.<\/p>\n<\/div>\n
A single nucleus from a single cell of a corn plant typically contains two sets of chromosomes. Each of them contains over 2 billion base pairs, or \u201cletters,\u201d of DNA and over 30,000 genes.<\/p>\n<\/div>\n
\u201cIf DNA from a single set of chromosomes could be unraveled and placed end to end, it would be more than 2 feet long. To fit in the tiny nucleus of a cell \u2014 many times smaller than the tip of a human hair \u2014 all this DNA is compacted in various ways,\u201d Thompson said.<\/p>\n<\/div>\n
Because DNA can\u2019t be replicated in its compact state, higher organisms have evolved sophisticated programs. It is called replication timing programs. That is to unravel and replicate small segments of their chromosomes at different times, he said. The researchers found that the replication program in corn differs in several important ways from those of animals and yeast.<\/p>\n<\/div>\n
Plans for future research include taking a more detailed look, he said. \u201cat the molecular machinery that defines maize replication and integrating laboratory experiments with computer modeling to understand the complex network of factors at work in the nucleus of plant cells.\u201d<\/p>\n<\/div>\n
Thompson and Linda Hanley-Bowdoin served as principal investigators for the project. Emily Wear from NC State\u2019s Department of Plant and Microbial Biology was lead author of the paper. Other participants were from NC State\u2019s departments of Plant and Microbial Biology and Horticultural Science; the Texas Advanced Computing Center at the University of Texas, Austin; and Cold Spring Harbor Laboratory in New York. The work was funded by the National Science Foundation\u2019s plant genome research program under grant number IOS-1025830.<\/p>\n<\/div>\n
Source:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b>North Carolina State University<\/div>\n","protected":false},"excerpt":{"rendered":"

Keywords:\u00a0Corn , DNA replication , North Carolina State University DNA replication is among life\u2019s most important processes. It provids a way for an organism\u2019s genetic material to be reproduced so it can be passed from cell to cell. For the first time, scientists have characterized that process for an entire plant genome. William Thompson is… Continue reading Scientists unravel mysteries of DNA replication in corn<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"two_page_speed":[],"footnotes":""},"categories":[17],"tags":[],"class_list":["post-762","post","type-post","status-publish","format-standard","hentry","category-industry-news","entry"],"yoast_head":"\nScientists unravel mysteries of DNA replication in corn - Agrinoon<\/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:\/\/www.agrinoon.com\/agriculture\/2017\/09\/25\/scientists-unravel-mysteries-dna-replication-corn\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Scientists unravel mysteries of DNA replication in corn - Agrinoon\" \/>\n<meta property=\"og:description\" content=\"Keywords:\u00a0Corn , DNA replication , North Carolina State University DNA replication is among life\u2019s most important processes. 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