4.7 Article

Transcriptomic Responses of Salvia hispanica to the Infestation of Red Spider Mites (Tetranychus neocaledonicus)

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MDPI
DOI: 10.3390/ijms241512261

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plant; agriculture; pest resistance; defense response

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Salvia hispanica, commonly known as chia, is a nutritious food source with high omega-3 fatty acid content. However, the infestation of red spider mites poses a serious problem in chia production. This study conducted a transcriptomic analysis to elucidate the defensive response of chia to red spider mites, identifying differentially expressed genes involved in defense mechanisms and uncovering the role of plant secondary metabolites and signaling pathways, such as jasmonic acid signaling, in defense against red spider mites.
Salvia hispanica (chia) is a highly nutritious food source and has gained popularity due to its high omega-3 fatty acid content. Red spider mites are a serious problem in the production of S. hispanica. However, no study has been conducted to analyze the defensive response to the infestation of red spider mites in S. hispanica. To elucidate the molecular mechanisms of the defensive response of S. hispanica to red spider mites, we performed a transcriptomic analysis of S. hispanica when infested by red spider mites. In the comparative assessment of leaf transcriptomes, a total of 1743 differentially expressed genes (DEGs) were identified between control and mite-infested S. hispanica. From these, 1208 (69%) transcripts were upregulated and 535 (31%) were downregulated. The DEGs included transcription factors, defense hormones, and secondary metabolites that were either suppressed or activated in response to spider mite herbivory. Gene Ontology (GO) enrichment analysis revealed that plant secondary metabolites, such as glucosinolates, and signaling pathways, including the jasmonic acid signaling pathway, may play an important role in the defense against red spider mites. This study provides novel insights into the defense response of S. hispanica to insect herbivory and could be a resource for the improvement of pest resistance in the chia.

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