Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing

Background: Transcriptome data obtained from plant samples often contain significant numbers of reads originating from viral genomes, which are typically co-isolated during the RNA extraction process. This occurs through the simultaneous presence of viral RNA alongside host plant RNA, leading to the...

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Main Authors: Malyaj R. Prajapati, Nitika Gupta, Mailem Yazing Shimray, Jayesh Gehlot, Abhinav Tiwari, Pooja Thapa, Damini Diksha, Somnath Kadappa Holkar, Pallavi Jagannath Mahajan, Sujoy Saha, Virendra Kumar Baranwal, Susheel Kumar Sharma
Format: Article
Language:English
Published: Elsevier 2025-06-01
Series:Journal of Genetic Engineering and Biotechnology
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Online Access:http://www.sciencedirect.com/science/article/pii/S1687157X25000381
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author Malyaj R. Prajapati
Nitika Gupta
Mailem Yazing Shimray
Jayesh Gehlot
Abhinav Tiwari
Pooja Thapa
Damini Diksha
Somnath Kadappa Holkar
Pallavi Jagannath Mahajan
Sujoy Saha
Virendra Kumar Baranwal
Susheel Kumar Sharma
author_facet Malyaj R. Prajapati
Nitika Gupta
Mailem Yazing Shimray
Jayesh Gehlot
Abhinav Tiwari
Pooja Thapa
Damini Diksha
Somnath Kadappa Holkar
Pallavi Jagannath Mahajan
Sujoy Saha
Virendra Kumar Baranwal
Susheel Kumar Sharma
author_sort Malyaj R. Prajapati
collection DOAJ
description Background: Transcriptome data obtained from plant samples often contain significant numbers of reads originating from viral genomes, which are typically co-isolated during the RNA extraction process. This occurs through the simultaneous presence of viral RNA alongside host plant RNA, leading to the inclusion of viral sequences in the transcriptomic data. Methods and results: Here, we identify a novel member of the genus Ampelovirus, grapevine leafroll-associated virus S (GLRaV-S) by employing the high-throughput sequencing (HTS) of RNA of grape leaves showing leafroll symptoms using a bioinformatic pipeline for plant virus detection. The genomic RNA of GLRaV-S, measured 13,102 nucleotides (nts) and encompasses five open reading frames (ORF). Homology analysis of GLRaV-S genome showed sequence identity of 23.0 – 53.3 % with the sequences of known ampeloviruses. Phylogenetic analysis based on genome sequences showed that GLRaV-S clustered in a same clade of ampeloviruses. However, the RdRp and HSP70h of GLRaV-S clustered with subgroup II while the CP sequences clustered with subgroup I of ampeloviruses. Conclusions: Based on the species demarcation criteria, GLRaV-S represents a newly discovered species within the genus Ampelovirus of the Closteroviridae family. This study on identification of novel virus will be useful in developing a robust certification program for the production of healthy plants of grapevine.
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spelling doaj-art-b6fdddcca0dd4f68a1fb3fc4e34d09e02025-08-20T03:14:09ZengElsevierJournal of Genetic Engineering and Biotechnology1687-157X2025-06-0123210049410.1016/j.jgeb.2025.100494Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencingMalyaj R. Prajapati0Nitika Gupta1Mailem Yazing Shimray2Jayesh Gehlot3Abhinav Tiwari4Pooja Thapa5Damini Diksha6Somnath Kadappa Holkar7Pallavi Jagannath Mahajan8Sujoy Saha9Virendra Kumar Baranwal10Susheel Kumar Sharma11Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, IndiaICAR-National Research Centre for Grapes, Manjari Farm, Pune 412307 Maharashtra, IndiaZonal Agricultural Research Station, Ganeshkhind, Pune 411007 Maharashtra, IndiaICAR-National Research Centre for Grapes, Manjari Farm, Pune 412307 Maharashtra, IndiaAdvanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; Corresponding authors.Advanced Centre for Plant Virology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India; Corresponding authors.Background: Transcriptome data obtained from plant samples often contain significant numbers of reads originating from viral genomes, which are typically co-isolated during the RNA extraction process. This occurs through the simultaneous presence of viral RNA alongside host plant RNA, leading to the inclusion of viral sequences in the transcriptomic data. Methods and results: Here, we identify a novel member of the genus Ampelovirus, grapevine leafroll-associated virus S (GLRaV-S) by employing the high-throughput sequencing (HTS) of RNA of grape leaves showing leafroll symptoms using a bioinformatic pipeline for plant virus detection. The genomic RNA of GLRaV-S, measured 13,102 nucleotides (nts) and encompasses five open reading frames (ORF). Homology analysis of GLRaV-S genome showed sequence identity of 23.0 – 53.3 % with the sequences of known ampeloviruses. Phylogenetic analysis based on genome sequences showed that GLRaV-S clustered in a same clade of ampeloviruses. However, the RdRp and HSP70h of GLRaV-S clustered with subgroup II while the CP sequences clustered with subgroup I of ampeloviruses. Conclusions: Based on the species demarcation criteria, GLRaV-S represents a newly discovered species within the genus Ampelovirus of the Closteroviridae family. This study on identification of novel virus will be useful in developing a robust certification program for the production of healthy plants of grapevine.http://www.sciencedirect.com/science/article/pii/S1687157X25000381GrapevineNovel virusHTSGLRaV-SAmpelovirus
spellingShingle Malyaj R. Prajapati
Nitika Gupta
Mailem Yazing Shimray
Jayesh Gehlot
Abhinav Tiwari
Pooja Thapa
Damini Diksha
Somnath Kadappa Holkar
Pallavi Jagannath Mahajan
Sujoy Saha
Virendra Kumar Baranwal
Susheel Kumar Sharma
Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing
Journal of Genetic Engineering and Biotechnology
Grapevine
Novel virus
HTS
GLRaV-S
Ampelovirus
title Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing
title_full Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing
title_fullStr Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing
title_full_unstemmed Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing
title_short Genome characterization of a newly discovered grapevine leafroll-associated virus S, in the genus ampelovirus by high-throughput sequencing
title_sort genome characterization of a newly discovered grapevine leafroll associated virus s in the genus ampelovirus by high throughput sequencing
topic Grapevine
Novel virus
HTS
GLRaV-S
Ampelovirus
url http://www.sciencedirect.com/science/article/pii/S1687157X25000381
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