First Report of Rhizomania of Sugar Beet from Texas

Duffus, J. E.; Liu, H. Y.

doi:10.1094/pd-71-0557b

Cited by 11 publications

(3 citation statements)

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“…Rhizomania also occurs in Denmark [15] and Iran [16]. In the USA, BNYVV was found in Washinton in 1981, California in 1983 [17], Texas in 1985 [18], and the virus is now found in all major sugarbeet growing areas [19].…”

Section: Introductionmentioning

confidence: 99%

Sequence Divergence of Four Soilborne Sugarbeet-Infecting Viruses

Lennefors¹,

Savenkov²,

Mukasa

et al. 2005

Virus Genes

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Soilborne viruses are among the most harmful pathogens of sugarbeet (Beta vulgaris L.ssp. vulgaris) but most of them lack information on genetic variability due to paucity of sequence data. Only one isolate of Beet soil borne virus (BSBV; genus Pomovirus), Beet virus Q (BVQ; genus Pomovirus) and Beet soil borne mosaic virus (BSBMV; genus Benyvirus) has been characterised for the coat protein (CP) gene. In this study, the CP gene sequences of three isolates each of BSBV and Beet necrotic yellow vein virus (BNYVV; genus Benyvirus) (France, Germany and USA), two isolates of BVQ (France and Germany), and one isolate of BSBMV (USA) were determined. Phylogenetic analyses including sequences from databanks indicated that the French BNYVV isolate of this study belongs to so-called P-type, the American isolate to A-type and the German isolate to B-type. The CP genes of the three BSBV isolates characterised in this study and the one available from databank were highly identical (98.4-99.0% at nucleotide level; one variable amino acid). The BSBMV isolate studied here differed from the previously characterised isolate for five nucleotides and four amino acids in the CP region. The two BVQ isolates characterised in this study contained three additional nucleotides resulting in an additional amino acid residue (arginine) at CP position 86, as compared to the only isolate available in databank.

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Section: Introductionmentioning

confidence: 99%

Sequence Divergence of Four Soilborne Sugarbeet-Infecting Viruses

Lennefors¹,

Savenkov²,

Mukasa

et al. 2005

Virus Genes

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“…The cysts of Polymyxa betae remain in the form of cystosory (resting spore) under field conditions (Ertunç 1998). The virus within the resting spores can persist in soil for at least 15 years and it is found that the fungus transmits the virus a very long time after uptaking it (Abe and Tamada 1986, Duffus 1991, Rush and Heidel 1995.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Rhizomania Disease in Sugar Beet Growing Areas of Turkey

Kaya¹

2009

Tarım Bilimleri Dergisi

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Rhizomania is one of the most destructive diseases affecting sugar beet. It leads to a severe loss in terms of root yield and sugar content up to 90 % and up to 70 % respectively, depending on the disease severity. It was reported in some regions of Marmara, Central Black Sea, and Central Anatolia and tends to spread in other regions in Turkey. The disease is caused by Beet Necrotic Yellow Vein Benyvirus (BNYVV) and transmitted by a fungus, Polymyxa betae. The primary source of its spread is through the movement of infested soils or beets. Only cultural control methods are employed to control this disease. At present, the most effective control measure is to use of partially resistant sugar beet cultivars. The other additional measures like planting early into cool soils, minimizing watering, avoiding soil compaction, and employing crop rotations can reduce levels of the virus in the soil. Therefore, it is essential to determine the infested areas and take cultural measures before the disease causes economically important yield losses. Based on a three-year crop rotation, surveys were conducted and sugar beet root samples were collected from the growing areas in 102 regions of 17 sugar factory boundaries and in three periods including 1996-1998, 1999-2001 and 2002-2004. These root samples were tested by means of DAS-ELISA and distribution of BNYVV was determined. Rhizomania was detected in the sugar beet production areas of 4, 9 and 15 sugar factories in 1996-1998 1999-2001, and 2002-2004 at the rates of 19.30% (46200 ha), 31.42% (94140 ha), and 48.66% (203640 ha), respectively.Key Words: BNYVV, rhizomania, beet necrotic yellow vein benyvirus, sugar beet Türkiye'de Şeker Pancarı Ekim Alanlarında Rhizomania Hastalığının Yayılma DurumuÖz: Rhizomania, şeker pancarının en zararlı hastalıklarından biridir. Hastalık, enfeksiyon şiddetine bağlı olarak, şeker pancarında % 90'a varan kök verimi ve % 70'e varan şeker verimi kayıplarına yol açmaktadır. Türkiye'de Marmara, Orta Karadeniz ve İç Anadolu'nun bazı bölgelerinde hastalığın varlığı rapor edilmiş ve hastalık, dünyada olduğu gibi diğer bölgelere giderek yayılmaktadır. Bu hastalığa pancar nekrotik sarı damar virüsü (BNYVV) yol açmakta ve Polymyxa betae fungusu vektörlük etmektedir. Yayılma esas olarak, bulaşık toprak veya şeker pancarının taşınmasıyla olmaktadır. Hastalığın mücadelesi, bulaşık ekim alanlarında yalnızca kültürel tedbirler alınarak yapılmaktadır. Günümüzde, en etkili kontrol tedbiri, kısmen dayanıklı şeker pancarı çeşitlerini kullanmaktır. Soğuk topraklara erken ekim, a şırı sulamanın azaltılması, toprak s ı k ışmasından kaçınılması ve münavebe uygulaması gibi yardımcı tedbirler topraktaki virus seviyesini düşürebilmektedir. Bu nedenle, bulaşık alanların büyük ekonomik kayıplara yol açmadan tespit edilmesi ve kültürel tedbirlerin alınması büyük önem taşımaktadır. Üç y ı llık münavebe uygulamasına göre, 1996-1998, 1999-2001 ve 2002-2004 yıllarında olmak üzere, üçer yıllık üç dönem halinde 17 şeker fabrikasının 102 bölgesinin şeker pancarı e...

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“…) crops in most growing areas of the world (Bouzoubaa 1986, Duffus 1987, Tamada 1973 . Symptoms of the disease are massive lateral proliferation of rootlets and a discoloration of the vascular tissue.…”

Section: Introductionmentioning

confidence: 99%

Reduced titer of BNYVV in transgenic sugar beets expressing the BNYVV coat protein

1996

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Rhizomania is a disease of sugar beet caused by the furovirus beet necrotic yellow vein virus (BNYVV) . Coat protein mediated resistance has been reported for a number of viral diseases . This approach to virus resistance was therefore attempted for control of rhizomania . Two constructs of the coat protein gene of BNYVV were introduced into sugar beet by Agrobacterium-mediated transformation. The mRNA level was estimated to be 0 .01 % of the poly A+ RNA . Expression of the coat protein gene was under the detection limit of our western blotting protocol i .e . below 0 .01 µg /50 pg (0 .02% of the total soluble protein) . One transformation event per construct was tested in a greenhouse assay and in rhizomania infested soil in a field trial . In the greenhouse assay, transgenic plants showed a strong reduction of virus multiplication when compared to non-transgenic plants . This result was confirmed in the field trial, where a significant difference in virus multiplication was shown between plants with and without the coat protein gene .

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First Report of Rhizomania of Sugar Beet from Texas

Cited by 11 publications

References 0 publications

Sequence Divergence of Four Soilborne Sugarbeet-Infecting Viruses

Sequence Divergence of Four Soilborne Sugarbeet-Infecting Viruses

Distribution of Rhizomania Disease in Sugar Beet Growing Areas of Turkey

Reduced titer of BNYVV in transgenic sugar beets expressing the BNYVV coat protein

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