Arabidopsis MHP1, a homologue of yeast Mpo1, is involved in ABA signaling
| Autor: | Tao Peng, Dong Meng, Tingting Yang, Min Zheng, Yi-Feng Hsu, Jiawen Yan, Kezhen Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Mutant Arabidopsis Plant Science Endoplasmic Reticulum 01 natural sciences Salt Stress 03 medical and health sciences chemistry.chemical_compound Plant Growth Regulators Osmotic Pressure Genetics Abscisic acid Microscopy Confocal biology Abiotic stress Arabidopsis Proteins Reverse Transcriptase Polymerase Chain Reaction fungi food and beverages Nuclear Proteins General Medicine biology.organism_classification ABI1 Sphingolipid Yeast Cell biology 030104 developmental biology chemistry Unfolded protein response Agronomy and Crop Science 010606 plant biology & botany Abscisic Acid |
| Zdroj: | Plant science : an international journal of experimental plant biology. 304 |
| ISSN: | 1873-2259 |
| Popis: | Sphingolipids and their intermediates play multiple roles in biological processes. The sphingoid long-chain base component of sphingolipids has emerged as a participant in the regulation of plant biotic and abiotic stress responses. The phytohormone abscisic acid (ABA) regulates many stress responses in plants for environmental adaptation. However, the relationship between the sphingoid bases and ABA is undetermined. In this study, mhp1-1 (the yeast Mpo1 homolog in plants) was isolated through a sodium chloride (NaCl)-sensitivity screen of Arabidopsis transfer DNA (T-DNA) insertion mutants. mhp1-1 was hypersensitivity to salt/osmotic stress and ABA. MHP1 encodes a protein with a domain of unknown function 962 (DUF962). Endoplasmic reticulum-localized MHP1 was found to interact with ABI1. MHP1, a homolog of yeast dioxygenase Mpo1, rescued the growth arrest of mpo1Δ cells caused by ER stress, suggesting functional homology of MHP1 to Mpo1. Overall, MHP1 plays important roles in response to ABA. |
| Databáze: | OpenAIRE |
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