JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA
Vol. 26 No. 2 (2026): SEPTEMBER, JURNAL HAMA DAN PENYAKIT TUMBUHAN TROPIKA: JOURNAL OF TROPICAL PLAN

Metatranscriptomic analysis reveals two new viruses and highly expressed endogenous elements in pepper in Iraq

Shurooq Zagier (Department of Plant Protection, Faculty of Agriculture, University of Kufa, Najaf, Iraq 54003)
Osamah Alisawi (Department of Plant Protection, Faculty of Agriculture, University of Kufa, Najaf, Iraq 54003)
Wisam Aljuaifari (Department of Plant Protection, Faculty of Agriculture, University of Kufa, Najaf, Iraq 54003)
Fadhal Al Fadhal (Department of Plant Protection, Faculty of Agriculture, University of Kufa, Najaf, Iraq 54003)



Article Info

Publish Date
21 Jul 2026

Abstract

Pepper plants exhibiting severe leaf curling and deformation in open fields in Iraq were investigated to characterize their associated virome using metatranscriptomic sequencing. High-throughput sequencing (HTS) revealed the presence of bell pepper alphaendornavirus (BPEV) and pepper cryptic virus 2 (PCV-2), together with fragmented sequences related to tobacco vein clearing virus (TVCV). A nearly complete genome of the Iraqi BPEV isolate (14,700 bp) and both genomic segments of PCV-2 (1,623 bp and 1,513 bp) were assembled and deposited in GenBank. Phylogenetic analysis showed that the BPEV isolate clustered closely with isolates from South Korea, Jamaica, and the Dominican Republic, whereas both PCV-2 genomic segments were most closely related to Turkish isolates, indicating high genetic conservation among geographically distant populations. In addition, transcriptome mapping revealed abundant expression of ten endogenous pararetroviral elements integrated within the pepper genome, with most transcripts corresponding to reverse transcriptase (RT-LTR) and RNase H domains. This study represents the first comprehensive metatranscriptomic characterization of the pepper virome in Iraq, documenting the first detection of BPEV and PCV-2 in the country while revealing extensive expression of endogenous viral elements. These findings expand current knowledge of pepper-associated viruses in the Middle East and demonstrate the value of metatranscriptomic sequencing for detecting both exogenous viruses and endogenous viral components.

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Journal Info

Abbrev

JHPT TROPIKA

Publisher

Subject

Agriculture, Biological Sciences & Forestry

Description

Jurnal Hama dan Penyakit Tropika (JHPT Tropika) publishes articles in plant pests, plant pathogens, plant damage caused by those pests and pathogens and or their management in tropical areas. In addition to basic and applied research papers, JHPT Tropika publishes short communication that have not ...