<i>Papaya yellow leaf curl virus</i>
            : A newly identified begomovirus infecting
            <i>Carica papaya</i>
            L. from the Indian Subcontinent

Nehra, Chitra; Marwal, Avinash; Verma, Rakesh Kumar; Mishra, Megha; Sharma, Pradeep; Gaur, Rajarshi Kumar

doi:10.1080/14620316.2019.1570827

Cited by 17 publications

(5 citation statements)

References 25 publications

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“…Other research in China shows the symptoms of curling and yellowing of the leaf bones in papaya plants caused by Ageratum yellow vein virus (AYVV) associated with a new betasatelit that infects papaya, which is then proposed as Papaya leaf curl China beta satellite virus (Shen et al, 2014). A new Begomovirus Papaya leaf curl virus and its associated betasatellite infecting papaya in India, this virus considered as a new species of Begomovirus with propose the name Papaya yellow leaf curl virus according to ICTV guidelines for new Begomovirus species (Nehra et al, 2019). Symptoms on papaya leaves such as yellowing and yellowing with brown spot had not been reported as typical symptoms of papaya's yellowing disease in Indonesia.…”

Section: Resultsmentioning

confidence: 99%

FIRST REPORT OF Begomovirus INFECTION ON PAPAYA IN BENGKULU, INDONESIA

Sutrawati¹,

Parwito²,

Priyatiningsih³

et al. 2021

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

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First report of Begomovirus infection on papaya in Bengkulu, Indonesia. A field survey was conducted during 2019, wefound a severe systemic yellow mosaic, striped green mosaic on leaves petiole, green spots on the fruit of papaya, leafmalformation, and stunting symptoms on three papaya cultivation area in Rejang Lebong, Kepahiang, Bengkulu Tengah, andSeluma, Bengkulu Province, Indonesia. A begomo-like virus was inferred to be the possible cause of the virus-disease-likesymptoms. The study aimed to identify the causal of those typical symptoms on papaya. PCR using universal primer fortranscriptional activator protein (TrAp) and replication-associated protein (Rep) gene of Begomovirus successfully amplifiedthe DNA fragments of 900 bp in all 10 detected samples, except for samples with leaf malformation and stunting symptoms. Itis indicating that those typical symptoms on papaya is associated with Begomovirus infection, while the causal of leafmalformation and stunting is unknown yet. This work is the first report of Begomovirus infected papaya in Indonesia. Severedisease incidence caused by this pathogen was observed on papaya plants in Bengkulu Province that was in the range of 42–100%. This finding is a precious information to be used for identification, and characterization the species of the virus,determining control strategies against the disease.

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Section: Resultsmentioning

confidence: 99%

FIRST REPORT OF Begomovirus INFECTION ON PAPAYA IN BENGKULU, INDONESIA

Sutrawati¹,

Parwito²,

Priyatiningsih³

et al. 2021

JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA

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“…Begomoviruses one of the principal genus of the family Geminiviridae encompass more than 320 diverse species prevailing in the tropical and subtropical vicinity of the old and new world, infects crops, ornamentals and weed plants; they are chiefly transmitted by the vector white-fly (Bemisia tabaci) (de Barro et al, 2011;Krishna Reddy et al, 2010;Marwal et al, 2017;Prajapat et al, 2014). In India, the first study of papaya leaf curl disease caused by the begomovirus Papaya leaf curl virus (PaLCV) was reported in 1998 (Malathi et al, 2017;Saxena et al, 1998) (Nehra et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Increase in Yield and Immunity in Bam OTM Treated Papaya Plants in India

Kharat¹,

Pottathil²

2023

ASD

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Background: Carica papaya L. (family Caricaceae) is one of the popular fruits in world. As with many tropical and subtropical crops, papaya is host to various pests and pathogens. More than 700 papaya plants were infected by unknown virus. The incidence of plants infected with leaf curl disease was 50-75%, but the infection was very severe. A typical curling and thickening were observed. The infection spread by air and rainwater to nearby papaya farms. Methods: This study reports the effect of BamO formulation on the biotic stress of the Papaya plant. BamO was sprayed on the plants and its effect was observed. After six days of Bam O treatment, new healthy leaves were observed on the plants. Result: The yellow and old leaves were dropped from the plants. After 2 months of the treatment BamO, the fruits were elongated and having similar shapes without uneven bumps. The green fruits without any dark or light spots were observed in BamO treated plants. Priming effect was observed by GCMS analysis, the 3 methylsalicylic acid increased quantity was observed in 7th day and 30th day samples of BamO treated plants. The BamO treatment not only increased the immunity of the plant but found effective in increasing yield of the papaya plants. In BamO treated papaya plants, the total yield obtained was 92.10 tonnes per 444 plants.

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“…Papaya leaf curl virus (PaLCuV) is a monopartite begomovirus ~2.7–2.8 Kb in size ( Figure 1 ) that causes PaLCD. PaLCuV genome consists of six open reading frames (ORFs) systematised in two transcriptional directions and are divided by an intergenic region (IR) ( Nehra et al, 2019 ). They have been named according to their functions, and encode proteins (AV2, AV1, AC3, AC2, AC1, and AC4) that assist in viral particles movement (intra- and inter-cellular) within the host.…”

Section: Introductionmentioning

confidence: 99%

Evolutionary Dynamics of Begomoviruses and Its Satellites Infecting Papaya in India

et al. 2022

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The genus Begomovirus represents a group of multipartite viruses that significantly damage many agricultural crops, including papaya, and influence overall production. Papaya leaf curl disease (PaLCD) caused by the complex begomovirus species has several important implications and substantial losses in papaya production in many developing countries, including India. The increase in the number of begomovirus species poses a continuous threat to the overall production of papaya. Here, we attempted to map the genomic variation, mutation, evolution rate, and recombination to know the disease complexity and successful adaptation of PaLCD in India. For this, we retrieved 44 DNA-A and 26 betasatellite sequences from GenBank reported from India. An uneven distribution of evolutionary divergence has been observed using the maximum-likelihood algorithm across the branch length. Although there were phylogenetic differences, we found high rates of nucleotide substitution mutation in both viral and sub-viral genome datasets. We demonstrated frequent recombination of begomovirus species, with a maximum in intra-species recombinants. Furthermore, our results showed a high degree of genetic variability, demographic selection, and mean substitution rate acting on the population, supporting the emergence of a diverse and purifying selection of viruses and associated betasatellites. Moreover, variation in the genetic composition of all begomovirus datasets revealed a predominance of nucleotide diversity principally driven by mutation, which might further accelerate the advent of new strains and species and their adaption to various hosts with unique pathogenicity. Therefore, the finding of genetic variation and selection emphases on factors that contribute to the universal spread and evolution of Begomovirus and this unanticipated diversity may also provide guidelines toward future evolutionary trend analyses and the development of wide-ranging disease control strategies for begomoviruses associated with PaLCD.

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Papaya yellow leaf curl virus : A newly identified begomovirus infecting Carica papaya L. from the Indian Subcontinent

Cited by 17 publications

References 25 publications

FIRST REPORT OF Begomovirus INFECTION ON PAPAYA IN BENGKULU, INDONESIA

FIRST REPORT OF Begomovirus INFECTION ON PAPAYA IN BENGKULU, INDONESIA

Increase in Yield and Immunity in Bam OTM Treated Papaya Plants in India

Evolutionary Dynamics of Begomoviruses and Its Satellites Infecting Papaya in India

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