{"id":16098,"date":"2025-04-29T12:40:01","date_gmt":"2025-04-29T12:40:01","guid":{"rendered":"https:\/\/exam.pscnotes.com\/current-affairs\/?p=16098"},"modified":"2025-04-29T12:42:58","modified_gmt":"2025-04-29T12:42:58","slug":"rna-antiviral-for-crops","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/current-affairs\/rna-antiviral-for-crops\/","title":{"rendered":"RNA Antiviral for Crops"},"content":{"rendered":"<ul>\n<li>\n<p><strong>Agricultural Losses:<\/strong> Plant viruses cause over $30 billion in annual global losses, with pests and diseases destroying nearly 40% of annual crops.<\/p>\n<\/li>\n<li>\n<p><strong>Cucumber Mosaic Virus (CMV):<\/strong> CMV infects over 1,200 plant species, causing significant yield losses (e.g., 25-30% in Indian banana plantations, up to 70% in pumpkin\/cucumber\/melon crops). Spread by aphids.<\/p>\n<\/li>\n<li>\n<p><strong>RNA Silencing:<\/strong> Plants naturally use RNA silencing (dsRNA triggers DCL enzymes to produce siRNAs, destroying viral RNA) as a defense against viruses.<\/p>\n<\/li>\n<li>\n<p><strong>HIGS vs. SIGS:<\/strong> Host-Induced Gene Silencing (HIGS) involves genetically modifying plants for continuous dsRNA production but faces regulatory and cost hurdles. Spray-Induced Gene Silencing (SIGS) uses RNA sprays, but traditional dsRNA mixes are inefficient.<\/p>\n<\/li>\n<li>\n<p><strong>New &#8220;Effective dsRNA&#8221; Approach:<\/strong> Researchers developed a new approach that enhanced the effectiveness of RNA silencing against CMV.<\/p>\n<\/li>\n<li>\n<p><strong>Engineered dsRNA:<\/strong> Genetically engineered dsRNA enriched with highly functional siRNA.<\/p>\n<\/li>\n<li>\n<p><strong>Key Advantages:<\/strong> The new approach: (i) precision, directing the plant\u2019s immune system toward the viral particles\u2019 most vulnerable genetic regions, boosting its ability to fight infection. (ii) a stronger defense because the more-effective dsRNA targets multiple regions of the viral genome simultaneously, making it harder for the virus to mutate and escape. (iii) effective dsRNA can be redesigned in about a month to target new viral strains.<\/p>\n<\/li>\n<li>\n<p><strong>Promising Results:<\/strong> Demonstrated up to 80% viral load reduction in lab settings using <em>Nicotiana benthamiana<\/em>. Effective against multiple CMV strains.<\/p>\n<\/li>\n<li>\n<p><strong>Future Steps:<\/strong> Developing spray-based solutions and field trials are underway to test effectiveness in natural conditions.<\/p>\n<\/li>\n<li>\n<p><strong>Broader Applications:<\/strong> The technology could be adapted for other plant viruses, fungal and bacterial diseases, and insect pests.<\/p>\n<\/li>\n<li>\n<p><strong>Challenges:<\/strong> RNA stability in outdoor conditions (sunlight, rain), cost and scalability of production, and regulatory approvals.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Agricultural Losses: Plant viruses cause over $30 billion in annual global losses, with pests and diseases destroying nearly 40% of annual crops. Cucumber Mosaic Virus (CMV): CMV infects over 1,200 plant species, causing significant yield losses (e.g., 25-30% in Indian banana plantations, up to 70% in pumpkin\/cucumber\/melon crops). Spread by aphids. RNA Silencing: Plants naturally &#8230; <a title=\"RNA Antiviral for Crops\" class=\"read-more\" href=\"https:\/\/exam.pscnotes.com\/current-affairs\/rna-antiviral-for-crops\/\" aria-label=\"Read more about RNA Antiviral for Crops\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":16099,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[595],"tags":[1287],"class_list":["post-16098","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-current-affairs","tag-28-04-25"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>RNA Antiviral for Crops - Current Affairs Exam<\/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:\/\/exam.pscnotes.com\/current-affairs\/rna-antiviral-for-crops\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"RNA Antiviral for Crops\" \/>\n<meta property=\"og:description\" content=\"Agricultural Losses: Plant viruses cause over $30 billion in annual global losses, with pests and diseases destroying nearly 40% of annual crops. Cucumber Mosaic Virus (CMV): CMV infects over 1,200 plant species, causing significant yield losses (e.g., 25-30% in Indian banana plantations, up to 70% in pumpkin\/cucumber\/melon crops). Spread by aphids. RNA Silencing: Plants naturally ... 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Cucumber Mosaic Virus (CMV): CMV infects over 1,200 plant species, causing significant yield losses (e.g., 25-30% in Indian banana plantations, up to 70% in pumpkin\/cucumber\/melon crops). Spread by aphids. RNA Silencing: Plants naturally ... 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