Manejo de epifitias del Virus de la mancha anular de la papaya utilizando barreras de Zea mays L. en Carica papaya L. []. Cabrera, D., Universidad Central. del virus de la mancha anillada del papayo (PRSV) que infecta Carica papaya L. en El virus de la mancha anular de la papaya (Papaya Ringspot Potyvirus. Epiphyte management of Papaya ringspot virus using Zea mays L. barriers in Carica papaya L. Rev. Protección Veg. [online]. , vol, n.2, pp.

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Services on Demand Journal. Variability and genetic structure of the population of watermelon mosaic virus infecting melon in Spain. CP sequences were adjusted to the same length of nucleotides for analysis.

Papaya ringspot virus

The field application of a new antiviral formulation offers a new alternative for efficient PRSV control, which can be included in integrated pest management. The average content of bases in the 21 isolates was A, Las diferencias existentes con el presente trabajo pudieran indicar una menor susceptibilidad de las accesiones a PRSV-P.

These are the plant growth stages of highest infection risk by PRSV. Introduction The papaya Carica papaya L. Subsequently, non-commercial fruits were counted, following MINAG quality control specifications.

Papaya seedlings were planted in east to west double rows spaced at 3.

Efecto de la temperatura en la virulencia del virus de la mancha anular de la papaya PRSV-p. Role of genetic recombination in the molecular architecture of Papaya ringspot virus. Evolution of the Zfx and Zfy genes: La papaya Carica papaya L. This similarities in the different CP regions led to the conclusion that the VR3 isolate black line in Fig. Briefly, 2 m L of each PCR was mixed with 1. Using genetic phylogeny studies, researchers suspect the virus originated in Asia, likely India, about 2, years ago.

The association of a plant virus with seeds provides a convenient means for virus survival and facilitates movement of the virus, including human intervention with harvesting and transporting seeds for subsequent cropping. The methods of pathogen-derived resistance as cross-protection Wang and Yeh, and transgenic resistance Gonsalves, are effective only for isolates that are genetically related Tennant et al.

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The Papaya ringspot virus PRSV is a very challenging virus to combat and prevents achieving a high productive potential in Carica papaya due to papayw lack of resistant genes in commercial papaya cultivars such as red Maradol, which originated in Cuba and extends to all America and the Caribbean.

Inhibidor viral para el control del Virus de la mancha anular (PRSV) en Carica papaya L.

Research Note Viral inhibitors to control the Papaya ringspot virus on Carica papaa. Description of Plant VirusesWarwick, n. Instituto de Viandas Tropicales. In order to implement successful vector control, frequent preventative sprays are required, which is rarely done. Japan aular been resistant to approve GMO papaya since its introduction in The analysis was performed by comparing the nucleotide sequences of the region that encode the coat protein CP of nine PRSV isolates from the Villa del Rosario location and 12 isolates from the Campo Hermoso location.

The main papaay are as follows. PRSV has flexible, x 12 nm filamentous, flexuous rod particles and consists of a monopartite single-stranded positive sense RNA, about 10, nucleotides long, excluding a poly-A tract found at its 3’end. Commun Agric Appl Biol Sci. Characteristics, pathogenicity, sequence variability and control”. There are two major types of this virus that are serologically indistinguishable and are so dr genetically related that they are now considered the same virus species.

A mild strain of PRSV is introduced into the host plant, which then develops resistance to virulent strains of the virus.

The emission of flowers per mo was increased considerably in the treated plants up to d. For this reason, it is necessary to gain knowledge on the nucleotide composition of viral isolates at the local level, which would provide a anulag addressing for the design of control strategies. Many examples of long-distance spread and establishment of plant virus in new regions or countries can be attributed to seed-borne inoculum transported by the seed trade Wilson, This corroborated the idea of using this viral inhibitor as an alternative to paoaya the PRSV effect along with integrated pest management IPM in sustainable agriculture.


Genetic variability of Papaya ringspot virus isolates in Norte de Santander – Colombia

Molecular Plant Pathology, Oxford, v. To reinforce the mechanical inoculation, plants were reinoculated using five aphids Myzus persicae per plant, previously fed on diseased papaya plants Bau et al, ; Cruz, The 1, replicates were performed to estimate the reliability of the branching patterns of the trees.

Automated phylogenetic detection of recombination using a genetic algorithm. Views Read Edit View history.

mmancha The results showed the possibility of using this viral inhibitor against PRSV because its effectiveness was comparable to that of the commercial antiviral QVI.

Recombinations, such as the one found in the VR3 isolate, occur in the majority of RNA viruses, are of great mancua importance and constitute one of the greatest forces that shape the virus genomes of plants Sztuba-Solinska et al. The papaya was first described in 1, by the Spanish chronicler Oviedo, who found it on the coasts of Panama and Colombia Cabrera et al.

Archived from the original on March 6, These results are interesting because they were obtained under field conditions with a new virus inhibitor formulated against the potyvirus PRSV in papaya, representing an important step forward in the improvement of the control management of this disease.

The low proportion of nucleotide substitution between non-synonymous and synonymous sites indicates a selection for the conservation of the amino acid sequence, or negative selection Kryazhimskiy and Plotkin, All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. First report of occurrence of Papaya ringspot virus in Bangladesh. Generation of transgenic papaya with double resistance to Papaya ringspot virus and Papaya leaf-distortion mosaic virus.

It is transmitted between plants by mechanical activities like pruning and by numerous aphid species such as Myzus persicae.