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• W4385727875 abstract "Abstract Background The 12-oxo-phytodienoic acid reductase (OPR) enzyme is crucial for the synthesis of jasmonates (JAs) and is involved in the plant stress response. However, the OPR gene family in sweetpotato, an important horticultural crop, remains unidentified. Results In this study, we employed bioinformatics techniques to identify nine IbOPR genes. Phylogenetic analysis revealed that these genes could be divided into Group I and Group II. Synteny analysis indicated that IbOPR evolution was driven by tandem duplication, whole-genome duplication (WGD), and segmental duplication events. The promoter sequences of IbOPRs were found to be associated with stress and hormonal responses. Additionally, we successfully cloned four IbOPRs from Haida HD7791 and Haida HD7798 using homologous cloning technology. These sequences were 1203 bp, 1200 bp, 1134 bp, and 1137 bp in length and encoded 400, 399, 377, and 378 amino acids, respectively. The protein sequence similarity between the salt-tolerant variety Haida HD7791 and the salt-sensitive variety Haida HD7798 was determined to be 96.75% for IbOPR2, 99.75% for IbOPR3, 92.06% for IbOPR6, and 98.68% for IbOPR7. Phylogenetic analysis categorized IbOPR2 and IbOPR3 proteins into Group II, while IbOPR6 and IbOPR7 proteins belonged to Group I. Subcellular localization experiments showed IbOPR2 present in the peroxisome, while IbOPR3, IbOPR6, and IbOPR7 proteins were found in the cytoplasm and nucleus. Salt stress induction experiments demonstrated that IbOPR2 , IbOPR3 , and IbOPR7 were significantly upregulated only in 'Haida HD7791' after 6 hours. In contrast, IbOPR6 was induced in 'Haida HD7798' at 6 hours but inhibited in 'Haida HD7791' at later time points (12, 24, 48, and 72 hours), highlighting functional differences in salt stress responses. Conclusions Our findings suggest that IbOPR2 may play a crucial role in sweetpotato's response to salt stress by participating in JAs synthesis. These results provide a foundation for future functional analyses of OPR genes in sweetpotato." @default.
• W4385727875 created "2023-08-11" @default.
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• W4385727875 date "2023-08-07" @default.
• W4385727875 modified "2023-09-27" @default.
• W4385727875 title "Genome-wide identification, gene cloning, subcellular location and expression analysis of the OPR gene family under salt stress in sweetpotato" @default.
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• W4385727875 doi "https://doi.org/10.21203/rs.3.rs-3215373/v1" @default.
• W4385727875 hasPublicationYear "2023" @default.
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