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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Soil-borne wheat mosaic virus ： ウィキペディア英語版 Soil-borne wheat mosaic virus Soil-borne wheat mosaic virus (SBWMV) is a rod-shaped plant pathogen that can cause severe stunting and mosaic in susceptible wheat, barley and rye cultivars. The disease has often been misdiagnosed as a nutritional problem, but this has actually allowed in part for the fortuitous visual selection by breeding programs of resistant genotypes. Soil-borne wheat mosaic virus is part of the ''Furovirus'' genus. Members of this genus are characterized by rigid rod-shaped particles and positive sense RNA genomes consisting of two molecules that are packaged into separate particles that code for either replication, mobility, structure or defense against the host. The virus is spread by a fungal-like protist, ''Polymyxa graminis'', whose asexual secondary and sexual primary cycles help the virus spread. The disease produces secondary symptoms from the root cell infection. The disease is a serious contributor to loss in crop yield. ==Hosts and Symptoms== The primary host for soil-borne wheat mosaic virus is the wheat plant, ''Triticum aestivum'', although the virus can also affect rye, barley, and triticale.〔https://ars.usda.gov/SP2UserFiles/ad_hoc/66452500Publications/Cowger/CowgerWeisz05.pdf〕 Symptoms of the disease are primarily found on the leaves. These symptoms include chlorotic leaf mottling or leaf mosaic, rosetting, stunting, streaking, and blotching of leaves.〔 The mosaic and mottling symptoms may range from mild green to yellow, and leaves may sometimes also have dashes, parallel streaks, reddish streaking, and necrosis at the tips.〔 Symptoms usually occur around the same time each year. This time is usually early spring, although in warmer climates it is possible that symptoms can emerge in late fall or early winter.〔 Diseased fields are often uneven in appearance of symptoms especially in low wet areas.〔http://extension.udel.edu/kentagextension/tag/sbwmv〕 This is because the drainage pattern of water on the field is used by the virus to infect plants. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Soil-borne wheat mosaic virus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.