{"id":1704,"date":"2018-09-20T17:19:06","date_gmt":"2018-09-20T09:19:06","guid":{"rendered":"https:\/\/www.agrinoon.com\/agriculture\/?p=1704"},"modified":"2018-09-20T17:19:06","modified_gmt":"2018-09-20T09:19:06","slug":"researchers-find-hotspot-regions-wheat-genome-high-zinc-content-new-study-shows","status":"publish","type":"post","link":"https:\/\/www.agrinoon.com\/agriculture\/2018\/09\/20\/researchers-find-hotspot-regions-wheat-genome-high-zinc-content-new-study-shows\/","title":{"rendered":"Researchers find \u201chotspot\u201d regions in the wheat genome for high zinc content, new study shows"},"content":{"rendered":"
An international team of scientists applied genome-wide association analysis for the first time to study the genetics that underlie grain zinc concentrations in wheat, according to\u00a0a report published<\/a>\u00a0in\u00a0Nature Scientific Reports<\/em>\u00a0on September 10.<\/span>\n<\/div>\n
Analyzing zinc concentrations in the grain of 330 bread wheat lines across diverse environments in India and Mexico, the researchers uncovered 39 new molecular markers associated with the trait, as well as two wheat genome segments that carry important genes for zinc uptake, translocation, and storage in wheat.\n<\/div>\n
The findings promise greatly to ease development of wheat varieties with enhanced levels of zinc, a critical micronutrient lacking in the diets of many poor who depend on wheat-based food, according to Velu Govindan, wheat breeder at the International Maize and Wheat Improvement Center (CIMMYT) and first author of the new report.\n<\/div>\n
\u201cA collaboration among research centers in India, Australia, the USA and Mexico, this work will expedite breeding for higher zinc through use of \u2018hotspot\u2019 genome regions and molecular markers,\u201d said Govindan. \u201cIt also advances efforts to make selection for grain zinc a standard feature of CIMMYT wheat breeding. Because varieties derived from CIMMYT breeding are grown on nearly half the world\u2019s wheat lands, \u2018mainstreaming\u2019 high zinc in breeding programs could improve the micronutrient nutrition of millions.\u201d\n<\/div>\n
More than 17 percent of humans, largely across Africa and Asia, lack zinc in their diets, a factor responsible for the deaths of more than 400,000 young children each year.\n<\/div>\n
Often used in human disease research, the genome-wide association approach was applied in this study to zero in on genome segments \u2014 known as quantitative trait loci (QTLs) \u2014 that carry genes of interest for wheat grain zinc content, according to Govindan.\n<\/div>\n
\u201cThe advantages of the genome-wide association method over traditional QTL mapping include better coverage of alleles and the ability to include landraces, elite cultivars, and advanced breeding lines in the analysis,\u201d he explained. \u201cOur study fully opens the door for the expanded use of wheat progenitor species as sources of alleles for high grain zinc, and the outcomes helped us to identify other candidate genes from wheat, barley,\u00a0Brachypodium<\/em>\u00a0grasses and rice.\u201d\n<\/div>\n
Farmers in South Asia are growing six zinc-enhanced wheat varieties developed using CIMMYT breeding lines and released in recent years, according to Ravi Singh, head of the CIMMYT Bread Wheat Improvement Program.<\/div>\n
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Source<\/strong>:\u00a0International Maize and Wheat Improvement Center<\/a><\/span><\/h4>\n<\/div>\n
<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

An international team of scientists applied genome-wide association analysis for the first time to study the genetics that underlie grain zinc concentrations in wheat, according to\u00a0a report published\u00a0in\u00a0Nature Scientific Reports\u00a0on September 10. Analyzing zinc concentrations in the grain of 330 bread wheat lines across diverse environments in India and Mexico, the researchers uncovered 39 new… Continue reading Researchers find \u201chotspot\u201d regions in the wheat genome for high zinc content, new study shows<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-1704","post","type-post","status-publish","format-standard","hentry","category-industry-news","entry"],"yoast_head":"\nResearchers find \u201chotspot\u201d regions in the wheat genome for high zinc content, new study shows - 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\/2018\/09\/20\/researchers-find-hotspot-regions-wheat-genome-high-zinc-content-new-study-shows\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers find \u201chotspot\u201d regions in the wheat genome for high zinc content, new study shows - agrinoon\" \/>\n<meta property=\"og:description\" content=\"An international team of scientists applied genome-wide association analysis for the first time to study the genetics that underlie grain zinc concentrations in wheat, according to\u00a0a report published\u00a0in\u00a0Nature Scientific Reports\u00a0on September 10. 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