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- W3210044906 endingPage "1714" @default.
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- W3210044906 abstract "Red pitaya (Hylocereus polyrhizus) is a significant functional food that is largely planted in Southeast Asia. Heat stress (HS) induced by high temperatures is likely to restrict the growth and survival of red pitaya. Although pitaya can tolerate temperatures as high as 40 °C, little is known of how it can withstand HS. In this study, the transcriptomic and metabolomic responses of red pitaya seedlings to HS were analyzed. A total of 198 transcripts (122 upregulated and 76 downregulated) were significantly differentially expressed after 24 h and 72 h of exposure to 42 °C compared with a control grown at 28 °C. We also identified 64 differentially accumulated metabolites in pitaya under HS (37 increased and 27 decreased). These differential metabolites, especially amino acids, organic acids, and sugars, are involved in metabolic pathways and the biosynthesis of amino acids. Interaction network analysis of the heat-responsive genes and metabolites suggested that similar pathways and complex response mechanisms are involved in the response of pitaya to HS. Overexpression of one of the upregulated genes (contig10820) in Arabidopsis, which is a homolog of PR-1 and named HuPR-1, significantly increased tolerance to HS. This is the first study showing that HuPR-1 plays a role in the response of pitaya to abiotic stress. These findings provide valuable insights that will aid future studies examining adaptation to HS in pitaya." @default.
- W3210044906 created "2021-11-08" @default.
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- W3210044906 date "2021-10-27" @default.
- W3210044906 modified "2023-09-30" @default.
- W3210044906 title "An Integrative Transcriptomic and Metabolomic Analysis of Red Pitaya (Hylocereus polyrhizus) Seedlings in Response to Heat Stress" @default.
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- W3210044906 doi "https://doi.org/10.3390/genes12111714" @default.
- W3210044906 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8625689" @default.
- W3210044906 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34828320" @default.
- W3210044906 hasPublicationYear "2021" @default.
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