{"id":117556,"date":"2019-04-04T23:22:36","date_gmt":"2019-04-04T23:22:36","guid":{"rendered":"https:\/\/www.bnreport.com\/a-major-crop-pest-can-make-tomato-plants-lie-to-their-neighbors\/"},"modified":"2019-04-04T23:22:36","modified_gmt":"2019-04-04T23:22:36","slug":"a-major-crop-pest-can-make-tomato-plants-lie-to-their-neighbors","status":"publish","type":"post","link":"https:\/\/www.bnreport.com\/en\/a-major-crop-pest-can-make-tomato-plants-lie-to-their-neighbors\/","title":{"rendered":"A major crop pest can make tomato plants lie to their neighbors"},"content":{"rendered":"<p>Dont blame the tomato. Tiny pests called silverleaf whiteflies can make a tomato plant spread deceptive scents that leave its neighbors vulnerable to attach.<\/p>\n<p>Sap-sucking <em>Bemisia tabaci<\/em>, an invasive menace to a wide range of crops, are definitely insects. Yet when they attack a tomato plant, prompting a silent shriek of scents, the plant starts smelling as if bacteria or fungi have struck instead. Those <a href=\"https:\/\/www.pnas.org\/content\/early\/2019\/03\/19\/1818599116.abstract\" rel=\"noreferrer noopener\" target=\"_blank\">phony odors prime neighboring tomato plants for an attack, but not from an insect<\/a>, an international research team found.<\/p>\n<p>Those plants prepare to mount a fast and strong resistance against an incoming pathogen. But that high alert suppresses the plants chemistry for resisting insects and \u201cleaves them far more vulnerable to the whiteflies when they arrive,\u201d says Xiao-Ping Yu, an entomologist at China Jiliang University in Hangzhou.<\/p>\n<p>Tomato plants that spent 24 hours in a chamber with just the odor of a major whitefly attack managed to produce only half the surge of an insect-fighter hormone as plants taken by surprise by an insect attack, Yu and colleagues report March 25 in the <em>Proceedings of the National Academy of Sciences<\/em>.<\/p>\n<p>Plant defense chemistry often poses this one-or-the-other dilemma. To put up a good fight against insects, plants typically rev up a system of defenses controlled by the hormone jasmonic acid, or JA. But throwing that system into full gear suppresses the defenses controlled by salicylic acid, SA, which are more useful against pathogens.<\/p>\n<p>The pathogen prep may not be a complete waste of effort for the plants. Whiteflies function like mosquitoes for plants, spreading viruses and other diseases. Even drops of whitefly pee, sometimes called honeydew, attract sooty mold.<\/p>\n<p>\u201cMaybe the plant is more worried about diseases,\u201d says study coauthor Ted Turlings, a chemical ecologist at the University of Neuch\u00e2tel in Switzerland. In the short term, the deceptive signal costs the neighbor plants because whitefly infestations get off to a strong start. But the diseases whiteflies bring may mean the SA defenses could be useful in the end. \u201cWe will try to explore this in follow-up research,\u201d he says.<\/p>\n<p>To help cultivated tomato plants defend against whiteflies, Petra Bleeker of the University of Amsterdam is turning to a wild relative, <em>Solanum habrochaites<\/em>. It makes its own insect repellants, compounds called terpenes, in glands at the tips of abundant hairs. Commercial tomatoes still show vestiges of this hairy chemistry. \u201cIf you put your finger on these hairs, on the green par<a href=\"https:\/\/www.sciencenews.org\/article\/major-crop-pest-can-make-tomato-plants-lie-their-neighbors\" rel=\"noreferrer noopener\" target=\"_blank\"><strong>Read More \u2013 Source<\/strong><\/a><\/p>\n<p>[contf]<br \/>\n[contfnew]<br \/>\n        <img decoding=\"async\" src=\"https:\/\/www.sciencenews.org\/profiles\/sn\/themes\/science_news\/logo.png\"\/><\/p>\n<h5><a href=\"https:\/\/app.newswirenow.co.uk\/www.sciencenews.org\" rel=\"noreferrer noopener\" target=\"_blank\">science news<\/a><\/h5>\n<p>[contfnewc]<br \/>\n[contfnewc]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dont blame the tomato. Tiny pests called silverleaf whiteflies can make a tomato plant spread decept..<\/p>\n","protected":false},"author":1,"featured_media":117557,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-117556","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A major crop pest can make tomato plants lie to their neighbors - Business News Report<\/title>\n<meta name=\"description\" content=\"Dont blame the tomato. 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