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- W2079356737 abstract "Previously, we reported rice (Oryza sativa L. japonica type cv. Nipponbare) allene oxide synthase (OsAOS) and cyclase (OsAOC) genes of the octadecanoid pathway. Here we have isolated a 12-oxo-phytodienoic acid reductase gene, called OsOPR1, encoding the last committed enzymatic step on the octadecanoid pathway leading to jasmonic acid (JA) biosynthesis. OsOPR1 encodes a 380 amino acid long polypeptide with a predicted molecular mass of 42465.02 and pI of 5.79, and belongs to a gene family in the rice genome. Transcriptional profiling using our established two-week-old rice seedling model system against a variety of environmental factors such as wounding, global signals (including JA), osmotic stresses, heavy metals, UV-C irradiation, fungal elicitor, protein phosphatase inhibitors, and gaseous pollutants indicated that OsOPR1 transcript was rapidly, transiently and differentially up-regulated within 30 min in leaves. Surprisingly, co-application of signaling molecules JA, salicylate and ethylene, resulted in a massive accumulation of the OsOPR1 transcript at 30 min and remained elevated with time, a new observation. Furthermore, transient expression of OsOPR1, most likely regulated by a de novo synthesized negative trans-acting factor(s), was evidenced by the use of cycloheximide. Finally, the endogenous OsOPR1 expression varied with the stage of plant development. These results strongly suggest a regulatory role for OsOPR1 in rice plant defense/stress response pathway(s) and reproduction." @default.
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- W2079356737 date "2003-10-01" @default.
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- W2079356737 title "Diverse environmental cues transiently regulate OsOPR1 of the “octadecanoid pathway” revealing its importance in rice defense/stress and development" @default.
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- W2079356737 doi "https://doi.org/10.1016/j.bbrc.2003.09.123" @default.
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