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Spider mite egg extract modifies Arabidopsis response to future infestations

ABSTRACT: Spider mite egg extract modifies Arabidopsis response to future infestations

PROVIDER: PRJNA714877 | ENA |

REPOSITORIES: ENA

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Spider mite egg extract modifies Arabidopsis response to future infestations

Project description:Transcriptional plant responses are specially under the scope on herbivore oviposition studies. However, most of the information comes from Lepidopteran models, where egg laying and feeding are separate events, and little is known regarding the plant reaction to those pests where females feed and oviposit simultaneously. The present study unveiled the oviposition-induced transcriptomic response of plants to Tetranychus urticae eggs. Transcriptional evidence indicated that the early events on the plant response to the egg extract involved ATP, Ca2+ and ROS disbalances. The main phytohormones triggered were JA and ET, with which also participated secondary metabolites, volatiles and glucosinolates as defence mechanisms. Many of the regulated genes are also involved during pathogen-defence mechanisms. Negative regulation of defence mechanisms happened at 72 h. Female fertility was significantly reduced when fed on plants pre-exposed to the eggs, while feeding increased on those plants pre-exposed for 72 h.

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Spider mite egg extract modifies Arabidopsis response to future infestations.

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Spirodiclofen resistance in the spider mite Tetranychus urticae

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Project description:Spider mites, including the two-spotted spider mite (Tetranychus urticae, TSSM) and the Banks grass mite (Oligonychus pratensis, BGM), are becoming increasingly important agricultural pests. The TSSM is an extreme generalist documented to feed on more than 1100 plant hosts. In contrast, the BGM is a grass specialist, with hosts including important cereal crops like maize, wheat, sorghum and barley. Historically, studies of plant-herbivore interactions have focused largely on insects. However, far less is known about plant responses to spider mite herbivores, especially in grasses, and whether responses differ between generalists and specialists. To identify plant defense pathways responding to spider mites, we collected time course RNA-seq data from barley (Hordeum vulgare L.) infested with TSSMs and BGMs. Additionally, and as a comparison to the physical damage caused by spider mite feeding, a wounding treatment was also included.

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Spirodiclofen resistance in the spider mite Tetranychus urticae

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Maize transcriptional responses to specialist and generalist spider mite herbivores

Project description:Spider mites, including the two-spotted spider mite (Tetranychus urticae, TSSM) and the Banks grass mite (Oligonychus pratensis, BGM), are becoming increasingly important agricultural pests. The TSSM is an extreme generalist documented to feed on more than 1100 plant hosts. In contrast, the BGM is a grass specialist, with hosts including important cereal crops like maize, wheat, and sorghum. Historically, studies of plant-herbivore interactions have focused largely on insects. As such, far less is known about plant responses to spider mite herbivores, especially in grasses, and whether responses differ between generalist and specialist mites. To identify plant defense pathways responding to spider mites, we collected time course RNA-seq data from maize (Zea mays) infested with TSSMs and BGMs. Additionally, and as a comparison to the physical damage caused by spider mite feeding, a wounding treatment was also included. In total, four biological samples were generated per treatment.

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