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Single-cell and spatial RNA sequencing reveal the spatiotemporal trajectories of fruit senescence
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Single-cell and spatial RNA sequencing reveal the spatiotemporal trajectories of fruit senescence
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Single-cell and spatial RNA sequencing reveal the spatiotemporal trajectories of fruit senescence
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Journal Article
Single-cell and spatial RNA sequencing reveal the spatiotemporal trajectories of fruit senescence
2024
Overview
The senescence of fruit is a complex physiological process, with various cell types within the pericarp, making it highly challenging to elucidate their individual roles in fruit senescence. In this study, a single-cell expression atlas of the pericarp of pitaya (
Hylocereus undatus
) is constructed, revealing exocarp and mesocarp cells undergoing the most significant changes during the fruit senescence process. Pseudotime analysis establishes cellular differentiation and gene expression trajectories during senescence. Early-stage oxidative stress imbalance is followed by the activation of resistance in exocarp cells, subsequently senescence-associated proteins accumulate in the mesocarp cells at late-stage senescence. The central role of the early response factor HuCMB1 is unveiled in the senescence regulatory network. This study provides a spatiotemporal perspective for a deeper understanding of the dynamic senescence process in plants.
Fruit senescence is a complex physiological process. Here, the authors construct a single-cell expression atlas of pitaya pericarp pitaya to provide a spatiotemporal perspective of the dynamic process of plant senescence.
