The chemotaxis behavior of the plasmodial stage of the true slime mold Physarum Polycephalum was assessed when given a binary choice between two volatile organic chemicals (VOCs) placed in its environment. All possible binary combinations were tested between 19 separate VOCs selected due to their prevalence and biological activity in common plant and insect species. The slime mold exhibited pos...

Tetranychus urticae is considered one of the main plagues in the world. Its occurrence in Pernambuco was registered for the first time in 1985 and it has caused considerable damage to the farmers, attacking different cultures of agricultural interest. The essential oils from different parts of Vitex agnus-castus harvested in the Atlantic forest in the state of Pernambuco, Brazil, were obtained ...

Herbivorous insects use olfactory cues to locate their host plant within a complex olfactory landscape. One such example is the European grapevine moth Lobesia botrana, a key pest of the grape in the Palearctic region, which recently expanded both its geographical and host plant range. Previous studies have showed that a synthetic blend of the three terpenoids, (E)-β-caryophyllene, (E)-β-farnes...

Kiwifruit vines rely on bees for pollen transfer between spatially separated male and female individuals and require synchronized flowering to ensure pollination. Volatile terpene compounds, which are important cues for insect pollinator attraction, were studied by dynamic headspace sampling in the major green-fleshed kiwifruit (Actinidia deliciosa) cultivar 'Hayward' and its male pollinator 'C...

Agricultural and medical insect pests are damaging edible crops, spreading diseases, harming non-target fauna flora. Prominent polyphagous harass farmers in the agronomy sector, causing uncountable revenue corrosion. Ecofriendly phytopesticides can avoid consequences of bulk usage synthetic chemicals. In this study, toxic effect on third-instar larvae four different species (Spodoptera litura, ...

Aphids are destructive pests, and alarm pheromones play a key role in their chemical ecology. Here, we conducted detailed analysis of terpenoids the vetch aphid, Megoura viciae, its host plant Pisum sativum using gas chromatography/mass spectrometry. Four major components, (-)-?-pinene (49.74%), (E)-?-farnesene (32.64%), (-)-?-pinene (9.42%) ( +)-limonene (5.24%), along with trace amounts +)-sa...

Pheromone-based mating disruption is used worldwide for management of the internal fruit feeding codling moth, Cydia pomonella (L.). There has been recent interest in the potential of improving mating disruption of C. pomonella, and potentially other insect species in general, by broadcasting combinations of pheromone and attractive host-plant kairomones. Given that such kairomones are attract...

‘Law Rome’ and ‘Granny Smith’ apples were stored hypobarically in air at 5 kPa total pressure and also in air or controlled atmosphere (CA) at 1.5 or 3% O2 with 0 or 3% CO2, for 8 months at 1°C. Fruit were placed under hypobaric storage immediately after harvest or after 0.5, 1, 2, 3, 4, 5 or 6 months storage in air at 1°C to determine the effects of delaying imposition of hypobaric storage on ...

The cultivated strawberry ( Fragaria × ananassa ) is an economically important fruit crop that intensively bred for improved sensory qualities. diversity of flavors and aromas in results mainly from the interactions sugars, acids, volatile organic compounds (VOCs) are derived diverse biochemical pathways influenced by expression many genes. This study integrates multiomic analyses to identify Q...