دورية أكاديمية
Ochratoxin A Contamination of California Pistachios and Identification of Causal Agents.
| العنوان: | Ochratoxin A Contamination of California Pistachios and Identification of Causal Agents. |
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| المؤلفون: | Singh P; Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648., Jaime R; Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648., Puckett RD; University of California Agricultural and Natural Resources, Kearney Agricultural Research and Extension Center, Parlier, CA 93648., Lake J; Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648., Papagelis A; Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648., Gabri VM; Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648., Michailides TJ; Department of Plant Pathology, University of California Davis/Kearney Agricultural Research and Extension Center, Parlier, CA 93648. |
| المصدر: | Plant disease [Plant Dis] 2024 Jun; Vol. 108 (6), pp. 1591-1601. Date of Electronic Publication: 2024 May 16. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Phytopathological Society Country of Publication: United States NLM ID: 9882809 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0191-2917 (Print) Linking ISSN: 01912917 NLM ISO Abbreviation: Plant Dis Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: St. Paul, Minn. : American Phytopathological Society, [1980]- |
| مواضيع طبية MeSH: | Ochratoxins*/analysis , Pistacia*/microbiology , Pistacia*/chemistry , Penicillium*/genetics , Penicillium*/isolation & purification, California ; Phylogeny ; Aspergillus/genetics ; Aspergillus/isolation & purification ; Aspergillus/metabolism ; Food Contamination/analysis ; Plant Diseases/microbiology |
| مستخلص: | Ochratoxin A (OTA) is a potent mycotoxin produced by Aspergillus and Penicillium spp., which contaminates many crops, including pistachios. Pistachios contaminated with OTA may be subjected to border rejections resulting in significant economic losses to the United States agricultural revenues. The current study examined prevalence of OTA in California-grown pistachios and identified its causal agents. OTA was detected in 20% of samples from 2018 to 2021 ( n = 809), with 18% of samples exceeding the European Union regulatory limit of 5 μg/kg. Fungi potentially responsible for OTA contamination were isolated from leaves, nuts, and soil collected from 14 pistachio orchards across California. A total of 1,882 isolates of Aspergillus section Nigri and 85 isolates of section Circumdati were recovered. Within section Nigri , 216 (11.5%) isolates were identified as potential OTA producers using a boscalid-resistance assay. Phylogenetic analyses of partial gene sequences for β-tubulin and calmodulin genes resolved section Circumdati into four species: A. ochraceus (33%), A. melleus (28%), A. bridgeri (21%), and A. westerdijkiae (19%). A. westerdijkiae produced the highest levels of OTA in inoculated pistachios (47 μg/g), followed by A. ochraceus (9.6 μg/g) and A. melleus (3.3 μg/g). A. bridgeri did not produce OTA. OTA production by section Circumdati was optimal from 20 to 30°C. All 216 boscalid-resistant isolates from section Nigri were identified as A. tubingensis , and representative isolates ( n = 130) produced 3.8 μg/kg OTA in inoculated pistachios. This is the first detailed report on OTA contamination and causal fungi in California pistachios and will be helpful in devising effective management strategies. Competing Interests: The author(s) declare no conflict of interest. |
| فهرسة مساهمة: | Keywords: Aspergillus section Circumdati; Aspergillus section Nigri; ochratoxin A; pistachio |
| المشرفين على المادة: | 0 (Ochratoxins) 1779SX6LUY (ochratoxin A) |
| تواريخ الأحداث: | Date Created: 20231220 Date Completed: 20240621 Latest Revision: 20240621 |
| رمز التحديث: | 20240621 |
| DOI: | 10.1094/PDIS-06-23-1233-RE |
| PMID: | 38115568 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 0191-2917 |
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| DOI: | 10.1094/PDIS-06-23-1233-RE |