Degradation of Sphingoid Long-Chain Base 1-Phosphates (LCB-1Ps): Functional Characterization and Expression of AtDPL1 Encoding LCB-1P Lyase Involved in the Dehydration Stress Response in Arabidopsis
Copyright policy )Degradation of Sphingoid Long-Chain Base 1-Phosphates (LCB-1Ps): Functional Characterization and Expression of AtDPL1 Encoding LCB-1P Lyase Involved in the Dehydration Stress Response in Arabidopsis
Sphingoid long-chain base (LCB) 1-phosphates are degradated by LCB 1-phosphate lyase to C(16) fatty aldehydes and phosphoethanolamine. Here, we confirmed that the At1g27980 gene product, AtDPL1, is a functional LCB-1-phosphate lyase. Expression of green fluorescent protein fusion products in suspension-cultured Arabidopsis cells showed that AtDPL1 is located to the endoplasmic reticulum. The rates of fresh weight decreases of dpl1-1 and dpl1-2 mutants were significantly slower than those of the wild-type plants. This ability to limit their transpiration reflected the leaf temperature of the mutant plants more than that of wild-type plants, suggesting that AtDPL1 plays a role in dehydration stress.
- Kyushu University Japan
- Kyoto University Japan
- Konan University Japan
DNA, Bacterial, Dehydration, Arabidopsis Proteins, Genetic Complementation Test, Green Fluorescent Proteins, Arabidopsis, Plant Transpiration, Saccharomyces cerevisiae, Endoplasmic Reticulum, Genes, Plant, Phosphates, Mutagenesis, Insertional, Gene Expression Regulation, Plant, RNA, Plant, Stress, Physiological, Mutation, Gene Deletion, Aldehyde-Lyases
DNA, Bacterial, Dehydration, Arabidopsis Proteins, Genetic Complementation Test, Green Fluorescent Proteins, Arabidopsis, Plant Transpiration, Saccharomyces cerevisiae, Endoplasmic Reticulum, Genes, Plant, Phosphates, Mutagenesis, Insertional, Gene Expression Regulation, Plant, RNA, Plant, Stress, Physiological, Mutation, Gene Deletion, Aldehyde-Lyases
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