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ABSTRACT: Reproductive fitness costs of chlorantraniliprole resistance in Spodoptera exigua Hübner

PROVIDER: PRJNA587951 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10403167_1.fastq.gz	Fastqsanger.gz
	SRR10403167_2.fastq.gz	Fastqsanger.gz
	SRR10403168_1.fastq.gz	Fastqsanger.gz
	SRR10403168_2.fastq.gz	Fastqsanger.gz
	SRR10403169_1.fastq.gz	Fastqsanger.gz

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Transcription profiling of Arabdiposis plants with rhizobacteria-induced systemic resistance after exposure to Spodoptera exigua or Pieris rapae herbivory

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Project description:The Spodoptera genus is defined as the pest-rich genus because it contains some of the most destructive lepidopteran crop pests, characterized by a wide host range. During feeding, the caterpillars release small amounts of oral secretion (OS) onto the wounded leaves. This secretion contains herbivore-induced molecular patterns (HAMPs) that activate the plant defense response, as well as effectors that may inhibit or diminish the plant’s anti-herbivory response. In this study, we explored the protein components of the OS of two Spodoptera species, Spodoptera exigua and Spodoptera littoralis.

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Project description:This study aimed to uncover the functional diversity and differentiation pathways of hemocytes in Spodoptera exigua by applying single-cell RNA sequencing (scRNA-seq). The objective was to classify hemocyte subtypes beyond traditional morphology and identify distinct gene expression profiles associated with immune responses, differentiation, and physiological functions.

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Oviposition by Spodoptera exigua on Solanum dulcamara alters the plant's response to herbivory and impairs larval performance [L1]

Project description:Plant resistance traits against insect herbivores are extremely plastic. Plants respond not only to the herbivory itself, but also to oviposition by herbivorous insects. How prior oviposition affects plant responses to larval herbivory is largely unknown. Combining bioassays and defense protein activity assays with microarray analyses and metabolite profiling, we investigated the impact of preceding oviposition on the interaction of Solanum dulcamara with the generalist lepidopteran herbivore Spodoptera exigua at the levels of the plant's resistance, transcriptome and metabolome. We found that oviposition increased plant resistance to the subsequently feeding larvae. While constitutive and feeding-induced levels of defensive protease inhibitor activity remained unaffected, pre-exposure to eggs altered S. dulcamara's transcriptional and metabolic response to larval feeding in leaves local and systemic to oviposition. Particularly, genes involved in phenylpropanoid metabolism were stronger expressed in previously oviposited plants, which was reflected by reciprocal changes of primary metabolites upstream and within these pathways. Our data highlight that plants integrate signals from non-threatening life stages of their natural enemies to optimize their response when they become actually attacked. The observed transcriptional and metabolic reshaping of S. dulcamara's response to S. exigua herbivory suggests a role of phenylpropanoids in oviposition-primed plant resistance.

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Oviposition by Spodoptera exigua on Solanum dulcamara alters the plant's response to herbivory and impairs larval performance [L0]

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