Nucleic acid transfer between plants is a phenomenon which is likely to occur in many ways in nature. We report here the active transmission of Apple scar skin viroid (ASSVd) naked ssRNA species by the whitefly Trialeurodes vaporariorum (Tv). Not only the viroid RNA, its DNA form was also identified from the insect. The viroid transfer efficiency was enhanced with the help of Cucumis sativus Phloem protein 2 (CsPP2), a plant protein known to translocate viroid RNAs. This PP2/ASSVd complex is stably present in the viroid infected cucumber plants, as was identified with the help of immunological reaction. As viroid-like secondary structures are found in some plant RNAs, and PP2 is known to bind and translocate several RNAs, the results have huge implications in transfer of these RNA species between plants visited by the whitefly.
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http://dx.doi.org/10.1080/15476286.2015.1086863 | DOI Listing |
BMC Genomics
November 2024
Advanced Centre for Plant Virology, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India.
Background: The choice of de novo assembler for high-throughput sequencing (HTS) data remains a pivotal factor in the HTS-based discovery of viral pathogens. This study assessed de novo assemblers, namely Trinity, SPAdes, and MEGAHIT for HTS datasets generated on the Illumina platform from 23 apple samples, representing 15 exotic and indigenous apple varieties and a rootstock. The assemblers were compared based on assembly quality metrics, including the largest contig, total assembly length, genome coverage, and N50.
View Article and Find Full Text PDFPlant Dis
October 2024
State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China.
A novel disease affecting small immature fruits has surfaced in 'Saiwaihong' apples (), a recently developed variety extensively cultivated across more than 20,000 ha in China. In an effort to pinpoint the causal agent(s) responsible for this ailment, RNA sequencing analysis was conducted on four symptomatic and four asymptomatic apple samples. The results revealed a diverse range of viruses and viroids, indicating mixed viral infection in diseased samples.
View Article and Find Full Text PDFTheor Appl Genet
January 2024
Plant Virology and Molecular Plant Pathology Laboratory, Division of Plant Pathology, SKUAST-Kashmir, Shalimar, Srinagar, 190025, India.
Mapping and fine mapping of bean anthracnose resistance genes is a continuous process. We report fine mapping of anthracnose resistance gene Co-18 which is the first anthracnose gene mapped to Pv10. The discovery of resistance gene is a major gain in the bean anthracnose pathosystem research.
View Article and Find Full Text PDFVavilovskii Zhurnal Genet Selektsii
October 2023
Vavilov Institute of General Genetics Russian Academy of Sciences, Moscow, Russia.
Apple clonal rootstocks are the basis of modern intensive horticulture, providing a rapid increase in yield and convenience of fruit trees cultivation. Production of clonal rootstocks under high humidity often causes powdery mildew infection caused by the pathogenic fungus Podosphaera leucotricha Salm., which significantly reduces the productivity of stoolbed.
View Article and Find Full Text PDFViruses
October 2023
Plant Virology Laboratory, Division of Biotechnology, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, Himachal Pradesh, India.
commonly known as the greenhouse whitefly, severely infests important crops and serves as a vector for apple scar skin viroid (ASSVd). This vector-mediated transmission may cause the spread of infection to other herbaceous crops. For effective management of ASSVd, it is important to explore the whitefly's proteins, which interact with ASSVd RNA and are thereby involved in its transmission.
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