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Density and distribution of the flat mite (Brevipalpus yothersi) (Acari: Tenuipalpidae) on four Hibiscus varieties: do leaves tell the full story?
Exp Appl Acarol
December 2024
University of Florida Tropical Research and Education Center, Homestead, FL, USA.
The flat mite, Brevipalpus yothersi (Baker, 1949) is widely distributed in the southern United States. This mite is associated with a citrus leprosis virus ((CiLV-C2) Cilevirus colombiaense strain hibiscus) infecting ornamental hibiscus (Hibiscus rosa-sinensis) in Florida and Hawaii. Because hibiscus is a highly traded ornamental plant, CiLV-C2 has the potential to spread.
View Article and Find Full Text PDFDevelopment of TaqMan-Based Real-Time qPCR Method for Accurate Detection and Quantification of Citrus Psorosis Virus and Cytoplasmic-Type Citrus Leprosis Virus in Saplings.
Plant Pathol J
December 2024
Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Korea.
In 2022, citrus fruits were the second most widely produced fruit globally, highlighting their significant role in the fruit industry. However, due to their clonal propagation, these fruits are highly susceptible to viral infections, posing challenges for growers. In response to the booming nursery market, the Korean plant quarantine station reported over 80 million sapling stocks, with 15% being discarded after rigorous inspection due to contamination or disease.
View Article and Find Full Text PDFFirst report of nectarine virus M in grapefruit ( Macfad.) in association with citrus chlorotic blotch disease in Texas, USA.
Plant Dis
June 2024
Texas A&M AgriLife Weslaco Research and Extension Center, Department of Plant Pathology & Microbiology, Weslaco, Texas, United States;
Article Synopsis
- In November 2019, leaf samples from 'Rio Red' grapefruit trees in Texas showing citrus leprosis-like symptoms were sent for pathogen identification, but initial high-throughput sequencing (HTS) failed to detect any virus-like agents.
- Advanced bioinformatics tools were later used to analyze archived HTS data, revealing significant portions of the nectarine marafivirus M (NeVM) genome and a few contigs related to other virus families, indicating a potential link to the observed symptoms.
- In September 2023, similar chlorotic blotch symptoms were observed in adjacent grapefruit blocks, leading to further testing where a significant percentage (81.25%) of the grapefruit plants tested positive for NeVM, confirming the association between
Development of TaqMan RT-qPCR for the detection of regulated citrus viruses and viroids in Aotearoa New Zealand.
J Virol Methods
June 2024
Plant Health and Environment Laboratory, Ministry for Primary Industries, 231 Morrin Road, St. Johns, Auckland 1072, New Zealand. Electronic address:
The major citrus species include several economically important fruits, such as orange, mandarin, lemon, limes, grapefruit and pomelos. Since the 1980 s, total production and consumption of citrus has grown strongly with the current annual worldwide production at over 105 million tonnes. New Zealand's citrus exports, for instance, had an estimated worth of NZ$ 11.
View Article and Find Full Text PDFBrevipalpus yothersi Baker (Tenuipalpidae) development in sweet orange plants is influenced by previous mite infestation and the presence of shelters.
Exp Appl Acarol
May 2024
Laboratório de Acarologia (AcaroLab), Faculdade de Ciências Agrárias e Veterinárias (FCAV-Unesp), Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane s/nº, Jaboticabal, São Paulo, CEP 14884-900, Brazil.
Article Synopsis
- Citrus leprosis, a serious viral disease in citrus caused mainly by CiLV-C, is spread by the Brevipalpus yothersi mites, which are studied for their colonization behaviors on citrus plants.
- Previous infestations of these mites, whether virulent or not, increase mite populations through enhanced oviposition and adult numbers, showing that the plant's defensive gene expressions (PR1 and PR4) react differently based on the mites' virulence.
- The presence of leprosis lesions and artificial shelters supports mite growth, with the non-viruliferous mites boosting the jasmonic acid (JA) defense pathway, while viruliferous mites activate the salicy
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