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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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. With the aim of making a statistical validation of the possible recombination event observed from the groupings in the phylogenetic trees, especially for isolate VR3, we analyzed the aligned sequences in a FASTA format with three different methodologies.

Efecto de la temperatura en la virulencia del virus de la mancha anular de la papaya PRSV-p. Multiple alignment of the nucleotide and mahcha amino acid sequences from two clones of each isolate were carried out using the MegAlign program.

Evaluation of methods for detecting recombination from DNA sequences: The symptoms on papaya are somewhat similar to those on cucurbits. However, the virus has switched back and forth between pathotypes many times in jancha evolution.

Analyzing the mosaic structure dde genes. There are two major types of this virus that are serologically indistinguishable and are so closely genetically related that they are now considered the same virus species.

PRSV strains are divided into two biotypes: The papaya Carica papaya L. It is difficult to suppress the spread of PRSV through roguing because it is spread very quickly and effectively by aphids.

The Plant Health Instructor. Instituto de Viandas Tropicales. Control untreated against the virus ; II.

PRSV encodes a single large protein which is subsequently cleaved into smaller proteins with several functions Gonsalves et al. Isolates of PRSV-W do infect cucurbits such as watermelon, cucumber, and squash and papay originally known as Watermelon mosaic virus 1. Las diferencias existentes con el presente trabajo pudieran indicar una menor susceptibilidad de las anulsr a PRSV-P.


Los resultados observados en este trabajo muestran que todas las accesiones evaluadas resultaron sensibles a la enfermedad bajo condiciones de campo, aunque con diferencias entre ellas.

Dimitrov Todrov and I. En este momento, las accesiones de Tallo morado de Nava y Amarilla de Nava mostraron los mayores de 0. Norte de Santander is potentially anu,ar agricultural department due to its geographical conditions, presenting a diversity of crops.

An exact nonparametric method for inferring mosaic structure in sequence triplets.

Assessment of Cuban papaya (Carica papaya L.) accessions against ringspot

These are the plant growth stages of highest infection risk by PRSV. Introduction Papaya Carica papaya L. Practices and perspectives of control of Papaya ringspot virus by cross protection. Articles papwya ‘species’ microformats. Phylogenetic analysis The differences in the nucleotide similarity between the PRSV isolates from each location in Norte de Santander are reflected in the phylogenetic tree that groups the isolates into two different clades Fig.

Papaya ringspot virus

Variability and genetic structure of plant virus populations. The differences in the nucleotide similarity between the PRSV isolates from each location in Norte de Santander appaya reflected in the phylogenetic tree that groups the isolates into two different clades Fig.

APS Press,p.

Molecular Plant Pathology, Oxford, v. Las accesiones evaluadas fueron: The presence of recombinations in PRSV provides an understanding of its molecular evolution and help in the study of the characteristics such as the specificity of the host, geographical distribution and emergence as new dr Mangrauthia et al.

Services on Demand Journal. In squash, watermelon and other cucurbits, PRSV-W causes mottling and distortion of leaves and fruit. This type infects papaya and several members of the melon family Cucurbitaceae. Severity of Papaya ringspot virus The applications of both antiviral products were able to attenuate the severity produced by the PRSV up to d Figure 1. Desarrollo de la fruticultura en el Norte de Santander.


The bioinformatic analysis suggested that the PRSV isolates from the locations in Norte de Santander were different from each other, grouping anilar different phylogenetic groups. 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. These results were acceptable in relation to those reported previously Qinfu et al.

Inter- and intralineage recombinants are common in natural populations of Turnip mosaic virus. The SimPlot program Lole et al. Exposure to foreign strains of the virus is a serious risk, ,ancha Rainbow papayas have been shown to be susceptible to PRSV from Guam, Taiwan and Thailand. PRSV’s coat protein gene was inserted into highly embryogenic plant tissue by using the newly invented gene gunwhich led to the development of the transgenic linewhich was proven to be effective at controlling Hawaiian strains of PRSV.

Archived from the original on March 6, Maradol roja en Cuba. Hawaiian papaya production has been severely affected twice by PRSV.

A phylogenetic analysis was conducted initially with 21 new CP sequences of PRSV from Norte de Santander, including 54 isolates reported in 11 different countries obtained from the GenBank database.

English pdf Article in xml format Anjlar references How to cite this article Automatic translation Send this article by e-mail. Undoubtedly, a reduction of the symptoms caused by this virus, allowed chloroplasts to function better, reducing losses in yield and chlorophyll content, according to some potyvirus information Cabrera et al. Methods of threating viral infections of selected trees and field crop using ribavirin.