Bibliografie tematiche / Beet mild yellowing virus (BMYV)

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Letteratura scientifica selezionata sul tema "Beet mild yellowing virus (BMYV)"

Autore: Grafiati

Pubblicato: 21 dicembre 2024

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Articoli di riviste sul tema "Beet mild yellowing virus (BMYV)"

Hauser, Sébastien, Mark Stevens, Christophe Mougel, Helen G. Smith, Christiane Fritsch, Etienne Herrbach e Olivier Lemaire. "Biological, Serological, and Molecular Variability Suggest Three Distinct Polerovirus Species Infecting Beet or Rape". Phytopathology® 90, n. 5 (maggio 2000): 460–66. http://dx.doi.org/10.1094/phyto.2000.90.5.460.

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Yellowing diseases of sugar beet can be caused by a range of strains classified as Beet mild yellowing virus (BMYV) or Beet western yellows virus (BWYV), both belonging to the genus Polerovirus of the family Luteoviridae. Host range, genomic, and serological studies have shown that isolates of these viruses can be grouped into three distinct species. Within these species, the coat protein amino acid sequences are highly conserved (more than 90% homology), whereas the P0 sequences (open reading frame, ORF 0) are variable (about 30% homology). Based on these results, we propose a new classification of BMYV and BWYV into three distinct species. Two of these species are presented for the first time and are not yet recognized by the International Committee on Taxonomy of Viruses. The first species, BMYV, infects sugar beet and Capsella bursa-pastoris. The second species, Brassica yellowing virus, does not infect beet, but infects a large number of plants belonging to the genus Brassica within the family Brassicaceae. The third species, Beet chlorosis virus, infects beet and Chenopodium capitatum, but not Capsella bursa-pastoris.

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Stephan, Dirk, e Edgar Maiss. "Biological properties of Beet mild yellowing virus derived from a full-length cDNA clone". Journal of General Virology 87, n. 2 (1 febbraio 2006): 445–49. http://dx.doi.org/10.1099/vir.0.81565-0.

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A German isolate of Beet mild yellowing virus (BMYV-IPP) was used for RT-PCR-based construction of the first infectious full-length cDNA clone of the virus (BMYVfl). The complete genomic sequence was determined and displayed high similarity to the French isolate BMYV-2ITB. The host range of BMYVfl was examined by agroinoculation and aphid transmission. Both methods lead to systemic infections in Beta vulgaris, Nicotiana benthamiana, N. clevelandii, N. hesperis, Capsella bursa-pastoris and Lamium purpureum. Immunological investigation by tissue-print immunoassay (TPIA) of agroinoculated plant tissues revealed only local infections restricted to the agroinoculated mesophyll tissues in some plant species. In Nicotiana glutinosa and N. edwardsonii, BMYV was not found in either the agroinoculated tissue or distant tissues by TPIA. So far, BMYVfl agroinoculation did not extend or confine the BMYV host range known from aphid transmission experiments but it did describe new local hosts for BMYV.

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Williams, I. S., A. M. Dewar e A. F. G. Dixon. "The effect of host plant-induced stomach precipitate on the ability of Myzus persicae (Hemiptera: Aphididae) to transmit sugarbeet yellowing viruses". Bulletin of Entomological Research 87, n. 6 (dicembre 1997): 643–47. http://dx.doi.org/10.1017/s0007485300038748.

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AbstractWhen Myzus persicae (Sulzer) feeds on healthy sugarbeet it develops a white precipitate inside its stomach which causes the stomach to enlarge. Infection of sugarbeet plants with beet yellows virus (BYV), but not beet mild yellowing virus (BMYV) results in further increases in stomach size. The influence of the white precipitate on the transmission of BYV and BMYV was investigated by rearing M. persicae on sugarbeet Beta vulgaris, Tetragonia expansa and Capsella bursa-pastoris, which are hosts for both BYV and BMYV, BYV and BMYV respectively, but the latter two hosts do not stimulate the formation of white precipitate in the aphid's stomach. Aphids reared on BYV-infected T. expansa were significantly better vectors of BYV than those reared on BYV-infected sugarbeet, but aphids reared on BMYV-infected C. bursa-pastoris did not transmit BMYV more efficiently than those reared on BMYV-infected sugarbeet. The consequences of these results for the spread of beet yellowing viruses are discussed.

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Beuve, Monique, Mark Stevens, Hsing-Yeh Liu, William M. Wintermantel, Sébastien Hauser e Olivier Lemaire. "Biological and Molecular Characterization of an American Sugar Beet-Infecting Beet western yellows virus Isolate". Plant Disease 92, n. 1 (gennaio 2008): 51–60. http://dx.doi.org/10.1094/pdis-92-1-0051.

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Abstract (sommario):

Three aphid-transmitted viruses belonging to the Polerovirus genus, Beet mild yellowing virus (BMYV), Beet chlorosis virus (BChV), and Beet western yellows virus (BWYV), have been described as pathogens of sugar beet. We present the complete biological, serological, and molecular characterization of an American isolate of Beet western yellows virus (BWYV-USA), collected from yellow beet leaves. The biological data suggested that BWYV-USA displayed a host range similar to that of BMYV, but distinct from those of BChV and the lettuce and rape isolates of Turnip yellows virus. The complete genomic RNA sequence of BWYV-USA showed a genetic organization and expression typical of other Polerovirus members. Comparisons of deduced amino acid sequences showed that P0 and the putative replicase complex (P1-P2) of BWYV-USA are more closely related to Cucurbit aphid-borne yellows virus (CABYV) than to BMYV, whereas alignments of P3, P4, and P5 showed the highest homology with BMYV. Intraspecific and interspecific phylogenetic analyses have suggested that the BWYV-USA genome may be the result of recombination events between a CABYV-like ancestor contributing open reading frame (ORF) 0, ORF 1, and ORF 2, and a beet Polerovirus progenitor providing the 3′ ORFs, with a similar mechanism of speciation occurring for BMYV in Europe. Results demonstrate that BWYV-USA is a distinct species in the Polerovirus genus, clarifying the nomenclature of this important group of viruses.

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Bunwaree, Heemee Devi, Elodie Klein, Guillaume Saubeau, Bruno Desprez, Véronique Ziegler-Graff e David Gilmer. "Rapid and Visual Screening of Virus Infection in Sugar Beets Through Polerovirus-Induced Gene Silencing". Viruses 16, n. 12 (23 novembre 2024): 1823. http://dx.doi.org/10.3390/v16121823.

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Abstract (sommario):

Since the ban of neonicotinoid insecticides in the European Union, sugar beet production is threatened by outbreaks of virus yellows (VY) disease, caused by several aphid-transmitted viruses, including the polerovirus beet mild yellowing virus (BMYV). As the symptoms induced may vary depending on multiple infections and other stresses, there is an urgent need for fast screening tests to evaluate resistance/tolerance traits in sugar beet accessions. To address this issue, we exploited the virus-induced gene silencing (VIGS) system, by introducing a fragment of a Beta vulgaris gene involved in chlorophyll synthesis in the BMYV genome. This recombinant virus was able to generate early clear vein chlorosis symptoms in infected sugar beets, allowing easy and rapid visual discernment of infected plants across five sugar beet lines. The recombinant virus displayed similar infectivity as the wild-type, and the insert remained stable within the viral progeny. We demonstrated that the percentage of VIGS-symptomatic plants was representative of the infection rate of each evaluated line, and depending on the susceptibility of the line to BMYV infection, VIGS symptoms may last over months. Our work provides a polerovirus-based VIGS system adapted to sugar beet crop allowing visual and rapid large-scale screens for resistance or functional genomic studies.

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Kozlowska-Makulska, Anna, Beata Hasiow-Jaroszewska, Marek S. Szyndel, Etienne Herrbach, Salah Bouzoubaa, Olivier Lemaire e Monique Beuve. "Phylogenetic relationships and the occurrence of interspecific recombination between beet chlorosis virus (BChV) and Beet mild yellowing virus (BMYV)". Archives of Virology 160, n. 2 (5 ottobre 2014): 429–33. http://dx.doi.org/10.1007/s00705-014-2245-6.

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Reinbold, C., S. Lacombe, V. Ziegler-Graff, D. Scheidecker, L. Wiss, M. Beuve, C. Caranta e V. Brault. "Closely Related Poleroviruses Depend on Distinct Translation Initiation Factors to Infect Arabidopsis thaliana". Molecular Plant-Microbe Interactions® 26, n. 2 (febbraio 2013): 257–65. http://dx.doi.org/10.1094/mpmi-07-12-0174-r.

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Abstract (sommario):

In addition to being essential for translation of eukaryotic mRNA, translation initiation factors are also key components of plant–virus interactions. In order to address the involvement of these factors in the infectious cycle of poleroviruses (aphid-transmitted, phloem-limited viruses), the accumulation of three poleroviruses was followed in Arabidopsis thaliana mutant lines impaired in the synthesis of translation initiation factors in the eIF4E and eIF4G families. We found that efficient accumulation of Turnip yellows virus (TuYV) in A. thaliana relies on the presence of eIF (iso)4G1, whereas Beet mild yellowing virus (BMYV) and Beet western yellows virus-USA (BWYV-USA) rely, instead, on eIF4E1. A role for these factors in the infectious processes of TuYV and BMYV was confirmed by direct interaction in yeast between these specific factors and the 5′ viral genome-linked protein of the related virus. Although the underlying molecular mechanism is still unknown, this study reveals a totally unforeseen situation in which closely related viruses belonging to the same genus use different translation initiation factors for efficient infection of A. thaliana.

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Mahillon, Mathieu, Raphaël Groux, Floriane Bussereau, Justine Brodard, Christophe Debonneville, Sonia Demal, Isabelle Kellenberger, Madlaina Peter, Thomas Steinger e Olivier Schumpp. "Virus Yellows and Syndrome “Basses Richesses” in Western Switzerland: A Dramatic 2020 Season Calls for Urgent Control Measures". Pathogens 11, n. 8 (6 agosto 2022): 885. http://dx.doi.org/10.3390/pathogens11080885.

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Abstract (sommario):

Massive outbreaks of virus yellows (VY) and syndrome “basses richesses” (SBR) are thought to be responsible for the major loss of sugar beet yields in 2020 in western cantons of Switzerland. Typical yellowing symptoms were visible during field inspections, and control measures were reportedly ineffective or even absent. Both diseases induce yellowing but have distinct etiologies; while VY is caused by aphid-transmitted RNA viruses, SBR is caused by the cixiid-transmitted γ-proteobacterium Candidatus Arsenophonus phytopathogenicus. To clarify the situation, samples from diseased plants across the country were screened for the causal agents of VY and SBR at the end of the season. Beet yellows virus (BYV) and Beet chlorosis virus (BChV) showed high incidence nationwide, and were frequently found together in SBR-infected fields in the West. Beet mild yellowing virus (BMYV) was detected in two sites in the West, while there was no detection of Beet western yellows virus or Beet mosaic virus. The nucleotide diversity of the detected viruses was then investigated using classic and high-throughput sequencing. For both diseases, outbreaks were analyzed in light of monitoring of the respective vectors, and symptoms were reproduced in greenhouse conditions by means of insect-mediated inoculations. Novel quantification tools were designed for BYV, BChV and Ca. A. phytopathogenicus, leading to the identification of specific tissues tropism for these pathogens.

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Kozlowska-Makulska, A., M. S. Szyndel, J. Syller, S. Bouzoubaa, M. Beuve, O. Lemaire e E. Herrbach. "First Report on the Natural Occurrence of Beet chlorosis virus in Poland". Plant Disease 91, n. 3 (marzo 2007): 326. http://dx.doi.org/10.1094/pdis-91-3-0326c.

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Abstract (sommario):

Yellowing symptoms on sugar beet (Beta vulgaris L.) are caused by several viruses, especially those belonging to the genus Polerovirus of the family Luteoviridae, including Beet mild yellowing virus (BMYV) and Beet western yellows virus (BWYV), and recently, a new species, Beet chlorosis virus (BChV), was reported (2). To identify Polerovirus species occurring in beet crops in Poland and determine their molecular variability, field surveys were performed in the summer and autumn of 2005. Leaves from symptomatic beet plants were collected at 26 localities in the main commercial sugar-beet-growing areas in Poland that included the Bydgoszcz, Kutno, Lublin, Poznań, Olsztyn, and Warszawa regions. Enzyme-linked immunosorbent assay (ELISA) tests (Loewe Biochemica GmbH, Sauerlach, Germany) detected poleroviruses in 23 of 160 samples (approximately 20 samples from each field). Multiplex reverse-transcription polymerase chain reaction (RT-PCR) (1) (GE Healthcare S.A.-Amersham Velizy, France) confirmed the presence of poleroviruses in 13 of 23 samples. Nine of twenty sugar beet plants gave positive reactions with BChV-specific primers and three with primers specific to the BMYV P0 protein. Two isolates reacted only with primer sets CP+/CP, sequences that are highly conserved for all beet poleroviruses. Leaf samples collected from three plants infected with BChV were used as inoculum sources for Myzus persicae in transmission tests to suitable indicator plants including sugar beet, red beet (Beta vulgaris L. var. conditiva Alef.), and Chenopodium capitatum. All C. capitatum and beet plants were successfully infected with BChV after a 48-h acquisition access period and an inoculation access period of 3 days. Transmission was confirmed by the presence of characteristic symptoms and by ELISA. Amino acid sequences obtained from each of four purified (QIAquick PCR Purification kit, Qiagen S.A., Courtaboeuf, France) RT-PCR products (550 and 750 bp for CP and P0, respectively) were 100% identical with the CP region (GenBank Accession No. AAF89621) and 98% identical with the P0 region (GenBank Accession No. NP114360) of the French isolate of BChV. To our knowledge, this is the first report of BChV in Poland. References: (1) S. Hauser et al. J. Virol. Methods 89:11, 2000. (2) M. Stevens et al. Mol. Plant Pathol. 6:1, 2005.

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JAGGARD, K. W., M. F. ALLISON, C. J. A. CLARK, A. D. TODD e H. G. SMITH. "The effect of nitrogen supply and virus yellows infection on the growth, yield and processing quality of sugarbeet (Beta vulgaris)". Journal of Agricultural Science 139, n. 2 (settembre 2002): 129–38. http://dx.doi.org/10.1017/s002185960200254x.

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Abstract (sommario):

The effects of supplying the fertilizer nitrogen (N) as a recommended quantity of ammonium nitrate or as a commonly used dose of poultry manure on yield of sugarbeet infected with Beet mild yellowing virus (BMYV) or Beet yellows virus (BYV) were studied in field experiments at IACR-Broom's Barn in 1990, 1991 and 1992. Three N fertilizer treatments comprising Zero (N0), standard rate of 110 kg N/ha (N1) and poultry manure equivalent to c. 300 kg/ha of available N (N2) were applied to plots which were uninoculated or were subsequently inoculated with either BMYV or BYV. Averaged over virus treatments, N1 increased sugar yields by 23% relative to N0: there was no further increase when N2 was applied. When averaged over N treatments, early virus yellows infection reduced the sugar yields by 23%. Generally there was no significant interaction between N supply and virus infection. There was no evidence that the large N supply could reduce the yield effect of virus yellows infection, as had previously been thought. Crops infected from late July produced similar yields to uninoculated controls. The main effect of virus yellows was to reduce the efficiency of radiation conversion even when account was taken of the light intercepted by yellow foliage. Whilst the N2 treatment helped to maintain a green leaf cover throughout the season on virus yellows infected crops, it had no effect on virus replication. Beet processing quality was impaired by increasing the N supply and by virus infection, but again there were generally no significant interactions between infection and N rate.

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Più fonti

Tesi sul tema "Beet mild yellowing virus (BMYV)"

Stephan, Dirk. "Molekulare Charakterisierung von beet mild yellowing virus (BMYV) und beet chlorosis virus (BChV) sowie Selektion von BMYV Amplicon-transgenen Nicotiana benthamiana". [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974988146.

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Bunwaree, Heemee Devi. "Implementation of a genetic screen for the identification of resistances to beet virus yellows". Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAJ042.

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Depuis l'interdiction des néonicotinoïdes dans l'Union Européenne, la production de betteraves sucrières est fortement menacée par des épidémies de jaunisses virales. Ces maladies sont causées par un complexe de plusieurs virus transmis par les pucerons. Parmi eux, les polérovirus, responsables de jaunisses modérées, tels que le beet mild yellowing virus (BMYV) et le beet chlorosis virus (BChV), sont particulièrement répandus. Afin d’améliorer le criblage des variétés de betteraves sucrières résistantes ou tolérantes aux jaunisses virales, nous avons mis au point un virus recombinant provoquant des symptômes visibles permettant de distinguer facilement et sans autre technologie les plantes infectées des plantes saines. Il s’agit d’un clone de BMYV capable d'induire l'extinction d'un gène endogène via le phénomène de virus induced gene silencing (VIGS) dont l’infection se manifeste par l'apparition accélérée de jaunisses au niveau des nervures des feuilles des betteraves, dès dix jours après l'agroinoculation. Les analyses moléculaires ont révélé que le virus recombinant présente un pouvoir infectieux comparable à celui du virus sauvage, et que l'insertion génétique est stable dans la descendance virale pendant au moins cinq mois après infiltration. Nos résultats ont également montré que le pourcentage de plantes présentant des symptômes de VIGS est représentatif du taux d'infection pour chaque lignée de betteraves testée. L'utilisation de cet outil nous a permis d'identifier visuellement au sein de quarante-deux lignées de betteraves sucrières, une lignée potentiellement résistante au BMYV ainsi que trois lignées partiellement résistantes. De telles lignées représentent des candidats potentiels intéressants pour les programmes de sélection. Ainsi, ce travail valide l'utilisation d'un polérovirus comme vecteur de VIGS, adapté à la betterave sucrière, permettant des criblages visuels et robustes à grande échelle pour l'identification de gènes de résistance ou pour des études fonctionnelles
Since the ban on neonicotinoids in the European Union, sugar beet production has been severely threatened by virus yellows (VY) epidemics. VY are caused by a complex of several aphid-transmitted viruses, among which the poleroviruses beet mild yellowing virus (BMYV) and beet chlorosis virus (BChV) are highly represented. In order to improve the screening of sugar beet varieties resistant or tolerant to viral yellows, we produced a recombinant virus, allowing easy and rapid visual discrimination between infected and healthy plants, without the need of additional equipment. It is a clone of BMYV capable of inducing the silencing of an endogenous gene via the phenomenon of virus induced gene silencing (VIGS), with infection manifesting as accelerated vein clearing of leaves, starting as early as ten days after agroinoculation. Molecular analyses revealed that the recombinant virus displays the same infectivity as the wild-type virus and that the insert is stable within the viral progeny, till at least five months post-infiltration. Our results also indicated that the percentage of VIGS-symptomatic plants is representative of the infection rate for each evaluated line. The use of this tool allowed us to visually identify one BMYV resistant and three partial resistant lines from forty-two sugar beet lines. Such lines represent interesting potential candidates for breeding programs. Thus, this work validates the use of a polerovirus as a VIGS vector, adapted to sugar beet, allowing large-scale, robust visual screenings for the identification of resistance genes or for functional studies

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Smith, H. G. "Comparative epidemiology and host : Virus interactions of beet yellow virus and beet mild yellowing virus in sugar beet". Thesis, University of East Anglia, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.374298.

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Freeman, B. D. C. "Pathogen-derived resistance to beet mild yellowing virus in the model host Arabidopsis thaliana". Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599213.

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Abstract (sommario):

This study shows that 11 Arabidopsis thaliana ecotypes are susceptible to infection by two agronomically significant viruses of the genus Polerovirus. All ecotypes tested were, to varying degrees, susceptible to Beet mild yellowing virus (BMYV) and Turnip yellows virus (TuYV) though a closely related species, Beet chlorosis virus (BChV), was unable to establish detectable infection. Agrobacterium tumefaciens was used to transform A. thaliana with one of four constructs containing sequences corresponding to either the BMYV major capsid protein (CP) or putative movement protein (MP) genes in either full-length or 3’-truncated form. BMYV-derived sequences were under the constitutive Cauliflower mosaic virus 35S promoter and linked to the hpt (hygromycin resistance) gene. T₁ plants were identified by selection on hygromycin and the presence of the viral gene sequences confirmed by PCR. Plants carrying full-length gene constructs were recovered with low frequency and exhibited abnormal phenotypic effects. Transgenic plants harbouring truncated CP and MP gene sequences arose with greater frequency; 16 and 12 independent lines were respectively identified. Primary transformants were grown to maturity under glasshouse conditions and allowed to self-pollinate. Analysis of T₂generation plants revealed four lines that displayed resistance; three harbouring the truncated CP construct and one carrying the truncated MP construct. Resistance was manifest as an amelioration of BMYV-induced symptoms and decreased susceptibility to disease correlated with decreased BMYV accumulation, as demonstrated by ELISA. A. thaliana has been established as a valuable model system with which to assess virus-derived transgenes for functionality. With respect to advances in transgenic design, which may afford protected plants effective viral immunity, a future strategy for engineering BMYV resistance is proposed. The prospects for commercial exploitation of pathogen-derived resistance technology by the sugar beet industry are also discussed.

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Stephan, Dirk [Verfasser]. "Molekulare Charakterisierung von beet mild yellowing virus (BMYV) und beet chlorosis virus (BChV) sowie Selektion von BMYV Amplicon-transgenen Nicotiana benthamiana / von Dirk Stephan". 2005. http://d-nb.info/974988146/34.

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Libri sul tema "Beet mild yellowing virus (BMYV)"

Smith, Helen G. Comparative epidemiology and host:virus interactions of beet yellows virus and beet mild yellowing virus in sugar beet. Norwich: University of East Anglia, 1986.

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Capitoli di libri sul tema "Beet mild yellowing virus (BMYV)"

Schmidt, H. E., E. Briest e I. Kalinina. "Das Milde Rübenvergilbungs-Virus (beet mild yellowing virus) als Ursache von Vergilbungskrankheiten bei Freilandgemüse in der Deutschen Demokratischen Republik". In 1985, 247–57. De Gruyter, 1985. http://dx.doi.org/10.1515/9783112476208-002.

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