Potential biomarkers of metal toxicity in deep-sea invertebrates – A critical review of the omics data

Sousa, Cármen S.V.; Sun, Jin; Mestre, Nélia C.

doi:10.1016/j.scitotenv.2024.175628

Science of The Total Environment

2024

DOI: 10.1016/j.scitotenv.2024.175628

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Potential biomarkers of metal toxicity in deep-sea invertebrates – A critical review of the omics data

Cármen S.V. Sousa,

Jin Sun,

Nélia C. Mestre

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2024

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Cited by 1 publication

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Leveraging Transcriptional Signatures of Diverse Stressors for Bumble Bee Conservation

Quinlan,

Hines,

Grozinger

2024

Molecular Ecology

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Organisms in nature are subjected to a variety of stressors, often simultaneously. Foremost among stressors of key pollinators are pathogens, poor nutrition and climate change. Landscape transcriptomics can be used to decipher the relative role of stressors, provided there are unique signatures of stress that can be reliably detected in field specimens. In this study, we identify biomarkers of bumble bee (Bombus impatiens) responses to key stressors by first subjecting bees to various short‐term stressors (cold, heat, nutrition and pathogen challenge) in a laboratory setting and assessing their transcriptome responses. Using random forest classification on this whole transcriptome data, we were able to discriminate each stressor. Our best model (tissue‐specific model trained on a subset of important genes) correctly predicted known stressors with 92% accuracy. We then applied this random forest model to wild‐caught bumble bees sampled across a heatwave event at two sites in central Pennsylvania, US, expected to differ in baseline temperature and floral resource availability. Transcriptomes of bees sampled during the heat wave's peak showed signatures of heat stress, while bees collected in the relatively cooler morning periods showed signatures of starvation and cold stress. We failed to pick up on signals of heat stress shortly after the heatwave, suggesting this set of biomarkers is more useful for identifying acute stressors than long‐term monitoring of chronic, landscape‐level stressors. We highlight future directions to fine‐tune landscape transcriptomics towards the development of better stress biomarkers that can be used both for conservation and improving understanding of stressor impacts on bees.

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Leveraging Transcriptional Signatures of Diverse Stressors for Bumble Bee Conservation

Quinlan,

Hines,

Grozinger

2024

Molecular Ecology

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Potential biomarkers of metal toxicity in deep-sea invertebrates – A critical review of the omics data

Cited by 1 publication

References 113 publications

Leveraging Transcriptional Signatures of Diverse Stressors for Bumble Bee Conservation

Leveraging Transcriptional Signatures of Diverse Stressors for Bumble Bee Conservation

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