Occurrence and Damage by Thrips on Greenhouse-Cultivated Fig

Kim, Dong Hwan; Cho, Michael; Yang, Chang Yeol; Tai-ho, Kang; Kim, Hyeong-Hwan; Jeon, Sung-Wook

doi:10.5656/ksae.2014.11.0.048

Cited by 8 publications

(10 citation statements)

References 6 publications

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“…It is also known as 'San Piero' (Condit, 1955), and it is grown worldwide under names such as 'Seoungjeongdoupin' in Korea (Lim et al, 2018), 'Brown Turkey' in the USA (Ferguson et al, 1990), and 'Roxo de Valinhos' in Brazil (Aksoy and Flaishman, 2022). The severity of thrips damage to this cultivar has been reported not only in Japan, but also in Korea (Kim et al, 2014). Of all cultivars surveyed here, 'Masui Dauphine' showed the worst thrips damage.…”

Section: Seasonal Prevalence Of Thrips and Damage To Various Fig Cult...mentioning

confidence: 49%

Thrips (Thysanoptera) Resistance of Fig Cultivars and Relationship with the Ostiole Morphology of Young Fruits

Hosomi

2024

Hortic J

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This study investigated how fruit morphology and development, especially ostiole openness of young fruit, affect the thrips (Thysanoptera) resistance of various fig (Ficus carica L.) cultivars. The rate of fruits with thrips (TFR) and the damage (DFR) varied among the 24 cultivars surveyed. TFR and DFR were highest in 'Masui Dauphine' (syn. 'San Piero'), a popular cultivar in Japan, and moderate in 'Brunswick', 'Archipel', and 'Saint Jean', but relatively low to almost zero in many other cultivars. Cultivar differences in DFR were correlated with the difference in the rate of ostiole hole (a hole larger than 0.1 mm in diameter towards the internal pulp) presence. However, thrips were also detected from fruits in which no ostiole hole was observed throughout the growing stages, so they are likely to be able to pass through narrower gaps. Of two predicted morphologies determining ostiole openness, i.e., scale loosening around the ostiole surface and obstruction of the ostiole interior by flowers, only the former was correlated with DFR, so that scale loosening in longitudinal and radial directions relative to the ostiole was actually observed. A general linear model (GLM) for likelihood of thrips detection for individual fruits, with cultivar, scale looseness in longitudinal and radial directions, and interactions between both looseness as explanatory variables, had the best fit at 15 days after fruit set. The results showed that fig cultivars with less loosening of several surface scales at around 15 days after fruit set tended to be less susceptible to thrips invasion.

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Section: Seasonal Prevalence Of Thrips and Damage To Various Fig Cult...mentioning

confidence: 49%

Thrips (Thysanoptera) Resistance of Fig Cultivars and Relationship with the Ostiole Morphology of Young Fruits

Hosomi

2024

Hortic J

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“…Colonies of two flower thrips species, F. occidentalis and F. intonsa , were previously established by Kim et al . [35] and reared under a constant temperature of 26±1 °C, photoperiod of 16 : 8 h (L:D), and relative humidity at 70±5 %. All four stages (egg, larva, pupa, and adult) were reared in a circular breeding container (100×40 mm, SPL, Pyeongtaek, Korea) with sprouted red kidney beans ( Phaseolus vulgaris ) as diets for both immature and adult stages.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, it transmits TSWV to the plant, which consequently suffers from hypotrophied development that results in worthless fruits [11,12]. Kim et al [13] report that F. occidentalis is the most dominant thrips species in greenhouse grown hot pepper plants. The other dominant thrips is a congener species, F. intonsa, which also transmits TSWV [14].…”

Section: Introductionmentioning

confidence: 99%

Virus-vectoring thrips regulate the excessive multiplication of tomato spotted wilt virus using their antiviral immune responses

Mandal,

Khan,

Kil

et al. 2024

Journal of General Virology

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The tomato spotted wilt virus (TSWV) is a member of the Tospoviridae family and has an negative/ambisense single-stranded RNA genome. Frankliniella occidentalis and F. intonsa are known to be dominant pests in Capsicum annuum (hot pepper) and can cause damage to the plant either directly by feeding, or indirectly by transmitting TSWV in a persistent and propagative manner, resulting in serious economic damage. This study compared the immune responses of two different thrips species against TSWV infection by transcriptome analysis, which then allowed the assessment of antiviral responses using RNA interference (RNAi). Both adult thrips shared about 90 % of the transcripts in non-viruliferous conditions. Most signal components of the immune pathways were shared by these two thrips species, and their expression levels fluctuated differentially in response to TSWV infection at early immature stages. The functional assays using RNAi treatments indicated that the Toll and JAK/STAT pathways were associated with the antiviral responses, but the IMD pathway was not. The upregulation of dorsal switch protein one supported its physiological role in recognizing TSWV infection and triggering the eicosanoid biosynthetic pathway, which mediates melanization and apoptosis in thrips. In addition, the signal components of the RNAi pathways fluctuated highly after TSWV infection. Individual RNAi treatments specific to the antiviral signalling and response components led to significant increases in the TSWV amount in the thrips, causing virus-induced mortality. These findings suggest that immune signalling pathways leading to antiviral responses are operating in the thrips to regulate TSWV litres to prevent a fatal viral overload. This study also indicates the differential antiviral responses between the TSWV-transmitting F. occidentalis and F. intonsa.

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“…Two aggregation pheromone components (NMB and LA) were synthesized and purchased from AD, Inc. (Andong, Korea). Each compound was a racemic mixture and of > 99% purity 4 . PBAN of F. occidentalis (> 95% purity) was synthesized by Peptides 2.0 (Chantilly, VA, USA).…”

Section: Methodsmentioning

confidence: 99%

“…To control thrips, different chemical insecticides have been applied to various crops, including hot peppers in Korea 3 . However, several outbreaks of F. occidentalis occur every year, and these seriously affect the crop yields 4 . The difficulties involved in effectively controlling this insect pest include its rapid development of insecticide resistance and its behavioral escape from exposure to insecticides 5 , 6 .…”

Section: Introductionmentioning

confidence: 99%

A novel physiological function of pheromone biosynthesis-activating neuropeptide in production of aggregation pheromone

Khan

Kim

Sung

et al. 2023

Sci Rep

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The western flower thrips, Frankliniella occidentalis, is an insect pest, and its aggregation pheromone (AP) plays a crucial role in the recruitment of both sexes. A novel pheromone biosynthesis-activating neuropeptide (PBAN)-like gene is encoded in F. occidentalis genome, but its physiological function has yet to be elucidated. This study hypothesized the physiological role played by PBAN in mediating AP production. AP has been known to be produced only by male adults in F. occidentalis. Surprisingly, our extraction of headspace volatiles contained two AP components in females as well as in males with similar composition. PBAN injection elevated the AP production whereas RNA interference (RNAi) of the gene expression suppressed the AP production in both sexes. A biosynthetic pathway to produce AP components were predicted and the enzymes catalyzing the main steps were confirmed in their expressions. Individual RNAi treatments of these genes significantly suppressed AP production. RNAi of PBAN gene downregulated the expressions of these biosynthesis-associated genes in both sexes. These results suggest that the novel neuropeptide acts as PBAN mediating AP production through stimulating its biosynthetic machinery in F. occidentalis.

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Occurrence and Damage by Thrips on Greenhouse-Cultivated Fig

Cited by 8 publications

References 6 publications

Thrips (Thysanoptera) Resistance of Fig Cultivars and Relationship with the Ostiole Morphology of Young Fruits

Thrips (Thysanoptera) Resistance of Fig Cultivars and Relationship with the Ostiole Morphology of Young Fruits

Virus-vectoring thrips regulate the excessive multiplication of tomato spotted wilt virus using their antiviral immune responses

A novel physiological function of pheromone biosynthesis-activating neuropeptide in production of aggregation pheromone

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