Publications by authors named "Trisna D Tungadi"
Drosophila suzukii (Matsumura) or spotted wing Drosophila is a worldwide invasive pest of soft- and stone-fruit production. Female D. suzukii lay their eggs in ripening fruit and the hatched larvae damage fruit from the inside, rendering it unmarketable and causing significant economic loss.
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- Cucumber mosaic virus (CMV) can be transmitted by aphids, and a specific mutant strain (Fny-CMVΔ2b) shows that infected tobacco plants (like Xanthi) develop strong resistance against aphids, reducing their survival and reproduction.
- The resistance mechanism is linked to the CMV 1a protein, which promotes aphid resistance, while the 2b protein found in wild-type CMV counters this by inhibiting immune responses.
- Experiments with transgenic tobacco plants revealed that the resistance induced by the 1a protein depends on jasmonic acid (JA)-dependent signaling, as these plants did not show resistance when JA signaling was disrupted.
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- Cucumber mosaic virus (CMV) affects tomato plants and is transmitted by aphids; the study examined how CMV influences aphid behavior through volatile organic compounds (VOCs) emitted by infected plants.
- The research found that generalist and specialist aphids displayed varying preferences for settling on CMV-infected versus mock-inoculated plants at different time points post-inoculation, indicating that aphids are influenced by the infection status of the plants.
- Notably, the interaction changes between aphids and plants were linked to specific CMV proteins but did not involve the salicylic acid defense signal, which protects plants from CMV damage without affecting aphid behavior.
The worldwide invasive insect pest, Matsumura (spotted-wing ), lays eggs in soft and stone fruit before harvest. Hatched larvae cause fruit collapse and significant economic losses. Current control methods rely primarily on foliar insecticide applications, which are not sustainable long-term solutions due to regulatory restrictions and the risk of insecticide resistance developing.
View Article and Find Full Text PDFBean common mosaic virus (BCMV), bean common mosaic necrosis virus (BCMNV), and cucumber mosaic virus (CMV) are important pathogens of common bean (), a crop vital for food security in sub-Saharan Africa. These viruses are vectored by aphids non-persistently, with virions bound loosely to stylet receptors. These viruses also manipulate aphid-mediated transmission by altering host properties.
View Article and Find Full Text PDFBean common mosaic virus (BCMV), bean common mosaic necrosis virus (BCMNV), and cucumber mosaic virus (CMV) cause serious epidemics in common bean (), a vital food security crop in many low-to-medium income countries, particularly in Sub-Saharan Africa. Aphids transmit these viruses "non-persistently," i.e.
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