Paper · 2026 · International Journal of Molecular Sciences

Library Preparation Biases Plant Virome Detection: Poly(A) mRNA Enrichment vs. rRNA Depletion in Pepper and Garlic

Hoseong Choi; Dong Woo Kang; Yeonhwa Jo; et al.

10
claims
16
verbatim quotes
0
citations
3
research areas
✓
Open access · cc-by

Abstract

High-throughput RNA sequencing reveals plant viromes, but library preparation methods may bias viral detection. Here, we compared rRNA-depleted total RNA-seq and poly(A)-selected mRNA-seq using field-collected pepper leaves (Anseong and Jincheon) and garlic cloves (Hoengseong) from Korean commercial fields. rRNA-depleted total RNA-seq consistently recovered more viruses, longer contigs, and complete multipartite DNA virus genomes (e.g., milk vetch dwarf virus components, tomato spotted wilt virus segments), while mRNA-seq was dominated by highly expressed polyadenylated viruses like broad bean wilt virus 2. In Jincheon pepper, mRNA-seq missed hot pepper endornavirus, pepper cryptic virus 2, and multiple milk vetch dwarf virus segments revealed by total RNA-seq. Garlic libraries showed similar patterns, with total RNA-seq additionally detecting low-titer RNA viruses likely representing contamination. rRNA-depleted total RNA-seq provides a more complete, less biased view of plant viromes and is recommended for comprehensive virus discovery and genome reconstruction, while mRNA-seq remains useful for polyadenylated virus quantification and host gene expression analysis alongside virome profiling.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 10

Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

rRNA depleted sequencing recovered more viruses than mRNA sequencing.

Taxon
peppere1
Outcome
virusese0
Direction
moree0
Comparator
poly(A)-selected mRNA-seqe1
Setting
Anseong and Jincheone1

Verbatim

e0

“rRNA-depleted total RNA-seq consistently recovered more viruses, longer contigs, and complete multipartite DNA virus genomes”

✓ located verbatim in the source · abstract, characters 309–433 · show in text ↑
e1

“compared rRNA-depleted total RNA-seq and poly(A)-selected mRNA-seq using field-collected pepper leaves (Anseong and Jincheon) and garlic cloves (Hoengseong)”

✓ located verbatim in the source · abstract, characters 121–277 · show in text ↑
Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

rRNA depleted sequencing recovered longer viral contigs.

Taxon
peppere1
Outcome
contigse0
Direction
longere0

Not reportedComparatorValue

Verbatim

e0

“rRNA-depleted total RNA-seq consistently recovered more viruses, longer contigs, and complete multipartite DNA virus genomes”

✓ located verbatim in the source · abstract, characters 309–433 · show in text ↑
e1

“pepper leaves (Anseong and Jincheon) and garlic cloves (Hoengseong)”

✓ located verbatim in the source · abstract, characters 210–277 · show in text ↑
Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

rRNA depleted sequencing recovered complete multipartite DNA virus genomes.

Taxon
peppere1
Outcome
complete multipartite DNA virus genomese0

Not reportedComparatorValue

Verbatim

e0

“rRNA-depleted total RNA-seq consistently recovered more viruses, longer contigs, and complete multipartite DNA virus genomes (e.g., milk vetch dwarf virus components, tomato spotted wilt virus segments)”

✓ located verbatim in the source · abstract, characters 309–511 · show in text ↑
e1

“pepper leaves (Anseong and Jincheon) and garlic cloves (Hoengseong)”

✓ located verbatim in the source · abstract, characters 210–277 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

mRNA sequencing was dominated by highly expressed polyadenylated viruses.

Taxon
peppere1
Interactor
broad bean wilt virus 2Broad bean wilt virus 2e0pathogen
Outcome
highly expressed polyadenylated virusese0

Not reportedComparatorValue

Verbatim

e0

“mRNA-seq was dominated by highly expressed polyadenylated viruses like broad bean wilt virus 2”

✓ located verbatim in the source · abstract, characters 519–613 · show in text ↑
e1

“pepper leaves (Anseong and Jincheon) and garlic cloves (Hoengseong)”

✓ located verbatim in the source · abstract, characters 210–277 · show in text ↑
Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

In Jincheon pepper, mRNA sequencing missed hot pepper endornavirus.

Taxon
peppere0
Interactor
hot pepper endornavirusHot pepper alphaendornaviruse0pathogen
Outcome
hot pepper endornaviruse0
Comparator
total RNA-seqe0
Setting
Jincheone0

Verbatim

e0

“In Jincheon pepper, mRNA-seq missed hot pepper endornavirus, pepper cryptic virus 2, and multiple milk vetch dwarf virus segments revealed by total RNA-seq”

✓ located verbatim in the source · abstract, characters 615–770 · show in text ↑
Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

In Jincheon pepper, mRNA sequencing missed pepper cryptic virus 2.

Taxon
peppere0
Interactor
pepper cryptic virus 2Pepper cryptic virus 2e0pathogen
Outcome
pepper cryptic virus 2e0
Comparator
total RNA-seqe0
Setting
Jincheone0

Verbatim

e0

“In Jincheon pepper, mRNA-seq missed hot pepper endornavirus, pepper cryptic virus 2, and multiple milk vetch dwarf virus segments revealed by total RNA-seq”

✓ located verbatim in the source · abstract, characters 615–770 · show in text ↑
Method / resourceobservedoriginal resultnegativemeasured

Claim · model-written summary

In Jincheon pepper, mRNA sequencing missed several milk vetch dwarf virus segments.

Taxon
peppere0
Interactor
milk vetch dwarf virusMilk vetch dwarf viruse0pathogen
Outcome
multiple milk vetch dwarf virus segmentse0
Comparator
total RNA-seqe0
Setting
Jincheone0

Verbatim

e0

“In Jincheon pepper, mRNA-seq missed hot pepper endornavirus, pepper cryptic virus 2, and multiple milk vetch dwarf virus segments revealed by total RNA-seq”

✓ located verbatim in the source · abstract, characters 615–770 · show in text ↑
Method / resourceobservedoriginal resultmeasured

Claim · model-written summary

Total RNA sequencing also detected low titer RNA viruses in garlic libraries, possibly contamination.

Taxon
GarlicAllium sativume0
Outcome
low-titer RNA virusese0
Qualifier
likely representing contaminatione0

Not reportedComparatorValue

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Allium sativum
Allium sativum · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Garlic libraries showed similar patterns, with total RNA-seq additionally detecting low-titer RNA viruses likely representing contamination”

✓ located verbatim in the source · abstract, characters 772–911 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend rRNA depleted total RNA sequencing for comprehensive virus discovery and genome reconstruction.

Taxon
Pepper and Garlict0
Outcome
recommended for comprehensive virus discovery and genome reconstructione0

Verbatim

e0

“rRNA-depleted total RNA-seq provides a more complete, less biased view of plant viromes and is recommended for comprehensive virus discovery and genome reconstruction”

✓ located verbatim in the source · abstract, characters 913–1079 · show in text ↑
t0

“Pepper and Garlic”

✓ located verbatim in the source · title, characters 97–114 · show in text ↑
Method / resourceobservedoriginal resultpositivemeasured

Claim · model-written summary

mRNA sequencing remains useful for polyadenylated virus quantification and host gene expression analysis.

Taxon
Pepper and Garlict0
Outcome
polyadenylated virus quantification and host gene expression analysise0

Not reportedComparatorValue

Verbatim

e0

“mRNA-seq remains useful for polyadenylated virus quantification and host gene expression analysis alongside virome profiling”

✓ located verbatim in the source · abstract, characters 1087–1211 · show in text ↑
t0

“Pepper and Garlic”

✓ located verbatim in the source · title, characters 97–114 · show in text ↑