{"id":1154,"date":"2018-02-02T17:01:19","date_gmt":"2018-02-02T09:01:19","guid":{"rendered":"https:\/\/www.agrinoon.com\/agriculture\/?p=1154"},"modified":"2018-02-02T17:01:19","modified_gmt":"2018-02-02T09:01:19","slug":"researchers-create-plague-resistant-tomatoes","status":"publish","type":"post","link":"https:\/\/www.agrinoon.com\/agriculture\/2018\/02\/02\/researchers-create-plague-resistant-tomatoes\/","title":{"rendered":"Researchers create plague-resistant tomatoes"},"content":{"rendered":"

Keywords: tomato<\/p>\n

Researchers at the Plant Molecular and Celular Biology Institute (IBMCP), a joint venture of the Universitat Polit\u00e8cnica de Val\u00e8ncia and the Spanish National Research Council (CSIC), has performed a study that shows how genetically modified tomato plants have increased resistance towards Tuta absoluta insect plagues. The project\u2019s results have been published in the BMC Plant Biology magazine.<\/p>\n

Plants are sessile plants \u2013 they are born, grow and die in the same spot. As they don\u2019t have the ability to move when under attack, their evolution has provided them with great genetic variety. That allows the plants to overcome different stress conditions. Nonetheless, an estimated 40% of the worldwide annual production of these crops is lost to plagues and pathogens, and 13% to insects.<\/p>\n

Luis Ca\u00f1as is a researcher of the CSIC at the IBMCP. He explains that \u201cthe miner insect Tuta absoluta has become one of the main plagues that threaten tomato plantations across the world. And without the appropriate management it can cause losses of between 80% and 100% of their production. To face this threat we have to fortify the plant\u2019s defense arsenal, and one of the alternatives being studied is giving the plants, through genetic engineering, defensive genes from phylogenetically distant species such as the protease inhibitors present in barley.\u201d

<\/p>\n

\"\"<\/div>\n


Jos\u00e9 P\u00edo Beltr\u00e1n is a research professor at the CSIC and also at the IBMCP. He explains that \u201cin this project the in vivo effect of a serine proteinase inhibitor (BTI-CMe) and a cysteine proteinase inhibitor (Hv-CPI2) have been investigated, isolated from the barley plant, on the Tuta absoluta insect. In order to do so we have tested both inhibitors separately as well as together in transgenic tomato plants. The Tuta absoluta larvae which were fed the double transgenic plants showed noticeable weight loss. Moreover, only 56% of the larvae reached their adult stage. Those that were reaching their adult phase had wing deformities and fertility reduction.<\/p>\n

The effect on the insect\u2019s digestive enzymes when ingesting proteinase inhibitors has also been studied.\u201d<\/p>\n

\u201cThe results of our work show a decrease in larvae trypsin activity. Proteinase inhibitors in transgenic tomato plants attracted species of the Tuta absoluta predatory insects such as the Nesidiocoris tenuis, but did not have an effect on them. We also studied whether the defensive mechanisms of the plants would activate on transgenic tomatoes. Curiously, the release of barley cystatin benefitted the plant\u2019s defense, including the proteinase 2 inhibitor gene, endogenous to the tomato. It is inducible through wounding. Furthermore, transgenic plants increased their glandular trichome production and their volatile organic compound emission was altered\u201d, Ca\u00f1as adds.<\/p>\n

\u201cTherefore, our work shows that it would be possible to simultaneously conduct integrated control, by combining transgenic crops, as well as biological control of the Tuta absoluta\u201d, Beltr\u00e1n concludes.<\/p>\n

Researchers of the Valencian Institute of Agricultural Research (IVIA) also took part in the project. It is of great interest to the agricultural sector. Because it proves the usefulness of the co-expression of different proteinase inhibitors for the plant\u2019s increased resistance to plagues.<\/p>\n

\n
Source<\/strong>: Universitat Polit\u00e8cnica de Val\u00e8ncia<\/a><\/span><\/div>\n<\/div>\n
<\/div>\n","protected":false},"excerpt":{"rendered":"

Keywords: tomato Researchers at the Plant Molecular and Celular Biology Institute (IBMCP), a joint venture of the Universitat Polit\u00e8cnica de Val\u00e8ncia and the Spanish National Research Council (CSIC), has performed a study that shows how genetically modified tomato plants have increased resistance towards Tuta absoluta insect plagues. The project\u2019s results have been published in the… Continue reading Researchers create plague-resistant tomatoes<\/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-1154","post","type-post","status-publish","format-standard","hentry","category-industry-news","entry"],"yoast_head":"\nResearchers create plague-resistant tomatoes - 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\/02\/02\/researchers-create-plague-resistant-tomatoes\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Researchers create plague-resistant tomatoes - agrinoon\" \/>\n<meta property=\"og:description\" content=\"Keywords: tomato Researchers at the Plant Molecular and Celular Biology Institute (IBMCP), a joint venture of the Universitat Polit\u00e8cnica de Val\u00e8ncia and the Spanish National Research Council (CSIC), has performed a study that shows how genetically modified tomato plants have increased resistance towards Tuta absoluta insect plagues. 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