Paper · 2026 · Journal of the Saudi Society of Agricultural Sciences

Molecular and pathogenic profiles of postharvest fungal pathogens in imported fruits and vegetables in Oman

Ratiba Al-Maaini; Rethinasamy Velazhahan; Hamed H. Al-Nadabi; et al.

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verbatim quotes
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citations
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Open access · cc-by

Abstract

Abstract Postharvest fungal decay threatens fruit and vegetable quality and safety, and the movement of produce across borders facilitates the spread of cosmopolitan pathogens. Comprehensive molecular data from such cross-border supply chains remain limited. A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market. Fungi were isolated on PDA (Rose Bengal dye) and characterized through sequencing of the ITS rDNA region, followed by phylogenetic placement against type and epitype sequences. Pathogenicity was assessed on corresponding healthy hosts using wounded and non-wounded inoculations. Lesion diameters were analyzed non-parametrically: Kruskal–Wallis (10,000-permutation p) with Dunn–Benjamini–Hochberg, and exact Wilcoxon with Cliff’s δ (95% CI) for wounded vs non-wounded within isolates. Twenty-seven isolates were resolved into 19 species across nine genera. Penicillium (9 isolates), Aspergillus (5), Fusarium (4), and Talaromyces (4) dominated. Some taxa infected intact tissues, including Mucor irregularis on zucchini and Fusarium inflexum on banana. Others, such as Penicillium expansum (apple), Talaromyces aculeatus and Fusarium falciforme (lemon), required wounds. On tomato, Penicillium oxalicum produced the largest lesions regardless of wounding. Significant effects were host‑ and isolate‑specific; a wounding effect was detected for grape (GL88). Fruits and vegetables act as vehicles for fungal pathogens that cross borders and establish themselves in new environments. Molecular characterization revealed a diverse set of cosmopolitan taxa with distinct host and wound dependencies. Effective biosecurity measures and careful handling are critical to limit the transboundary risks of postharvest fungal decay.

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Claims 13

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Mucor irregularis infected intact zucchini tissue.

Interactor
Mucor irregularisMucor irregularise1pathogen
Outcome
infected intact tissuese1

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

Cucurbita pepo subsp. pepo
Cucurbita pepo subsp. pepo · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Some taxa infected intact tissues, including Mucor irregularis on zucchini and Fusarium inflexum on banana”

✓ located verbatim in the source · abstract, characters 1089–1195 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Fusarium inflexum infected intact banana tissue.

Taxon
bananae1
Interactor
Fusarium inflexumFusarium inflexume1pathogen
Outcome
infected intact tissuese1

Verbatim

e1

“Some taxa infected intact tissues, including Mucor irregularis on zucchini and Fusarium inflexum on banana”

✓ located verbatim in the source · abstract, characters 1089–1195 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Penicillium expansum required wounds to infect apple.

Treatment
woundse1
Interactor
Penicillium expansumPenicillium expansume1pathogen
Outcome
required woundse1
Comparator
non-wounded inoculationse2

Not reportedDirection

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗
Penicillium expansum
Penicillium expansum · InteractorH.J. Larsen, Bugwood.org · CC BY 3.0 us · Wikimedia Commons ↗

Verbatim

e1

“Others, such as Penicillium expansum (apple), Talaromyces aculeatus and Fusarium falciforme (lemon), required wounds”

✓ located verbatim in the source · abstract, characters 1197–1313 · show in text ↑
e2

“Pathogenicity was assessed on corresponding healthy hosts using wounded and non-wounded inoculations”

✓ located verbatim in the source · abstract, characters 621–721 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Talaromyces aculeatus and Fusarium falciforme required wounds to infect lemon.

Treatment
woundse1
Interactor
Talaromyces aculeatusTalaromyces aculeatuse1pathogen
Second interactor
Fusarium falciformeFusarium falciformee1pathogen
Outcome
required woundse1
Comparator
non-wounded inoculationse2

Not reportedDirection

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

Citrus x limon
Citrus ×limon · TaxonElena Chochkova · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“Others, such as Penicillium expansum (apple), Talaromyces aculeatus and Fusarium falciforme (lemon), required wounds”

✓ located verbatim in the source · abstract, characters 1197–1313 · show in text ↑
e2

“Pathogenicity was assessed on corresponding healthy hosts using wounded and non-wounded inoculations”

✓ located verbatim in the source · abstract, characters 621–721 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

On tomato, Penicillium oxalicum produced the largest lesions regardless of wounding.

Interactor
Penicillium oxalicumPenicillium oxalicume1pathogen
Outcome
largest lesionse1
Qualifier
regardless of woundinge1

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

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗
Penicillium oxalicum
Penicillium oxalicum · InteractorJie-Hao Ou · CC BY 4.0 · iNaturalist ↗

Verbatim

e1

“On tomato, Penicillium oxalicum produced the largest lesions regardless of wounding”

✓ located verbatim in the source · abstract, characters 1315–1398 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

A wounding effect was detected on grape for isolate GL88.

Taxon
grapee1
Treatment
woundinge1
Interactor
GL88e1pathogen
Outcome
wounding effecte1
Comparator
non-wounded inoculationse2

Not reportedDirection

Verbatim

e1

“a wounding effect was detected for grape (GL88)”

✓ located verbatim in the source · abstract, characters 1453–1500 · show in text ↑
e2

“Pathogenicity was assessed on corresponding healthy hosts using wounded and non-wounded inoculations”

✓ located verbatim in the source · abstract, characters 621–721 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Twenty-seven isolates were resolved into 19 species across nine genera.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Outcome
resolved into 19 speciese1
Value
19 speciese1

Verbatim

e1

“Twenty-seven isolates were resolved into 19 species across nine genera”

✓ located verbatim in the source · abstract, characters 929–999 · show in text ↑
e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Penicillium (9 isolates) dominated the isolates.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Interactor
PenicilliumPenicilliume3pathogen
Outcome
dominatede3
Value
9 isolatese3

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

Penicillium
Penicillium · Interactor · picture from its Wikimedia Commons categoryMilo Manica · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
e3

“Penicillium (9 isolates), Aspergillus (5), Fusarium (4), and Talaromyces (4) dominated”

✓ located verbatim in the source · abstract, characters 1001–1087 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Aspergillus (5 isolates) dominated the isolates.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Interactor
AspergillusAspergilluse3pathogen
Outcome
dominatede3
Value
5e3

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

Aspergillus
Aspergillus · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
e3

“Penicillium (9 isolates), Aspergillus (5), Fusarium (4), and Talaromyces (4) dominated”

✓ located verbatim in the source · abstract, characters 1001–1087 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fusarium (4 isolates) dominated the isolates.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Interactor
FusariumFusariume3pathogen
Outcome
dominatede3
Value
4e3

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

Fusarium
Fusarium · Interactor · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
e3

“Penicillium (9 isolates), Aspergillus (5), Fusarium (4), and Talaromyces (4) dominated”

✓ located verbatim in the source · abstract, characters 1001–1087 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Talaromyces (4 isolates) dominated the isolates.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Interactor
TalaromycesTalaromycese3pathogen
Outcome
dominatede3
Value
4e3

Verbatim

e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
e3

“Penicillium (9 isolates), Aspergillus (5), Fusarium (4), and Talaromyces (4) dominated”

✓ located verbatim in the source · abstract, characters 1001–1087 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Effective biosecurity measures and careful handling are critical to limit transboundary risks of postharvest fungal decay.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Outcome
biosecurity measurese4

Verbatim

e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
e4

“Effective biosecurity measures and careful handling are critical to limit the transboundary risks of postharvest fungal decay”

✓ located verbatim in the source · abstract, characters 1740–1865 · show in text ↑

schema checkedfield values found in the cited quotesPermalinkReport an issue

Observationauthor interpretationoriginal resultmeasured

Claim · model-written summary

Fruits and vegetables act as vehicles for fungal pathogens that cross borders.

Taxon
tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and bananae2
Outcome
act as vehicles for fungal pathogense5

Verbatim

e2

“A total of 78 symptomatic and asymptomatic samples of tomato, capsicum, grape, strawberry, zucchini, lemon, apple, pear, and banana were collected from an international produce market”

✓ located verbatim in the source · abstract, characters 259–442 · show in text ↑
e5

“Fruits and vegetables act as vehicles for fungal pathogens that cross borders and establish themselves in new environments”

✓ located verbatim in the source · abstract, characters 1502–1624 · show in text ↑