- Information
- Symbol: OsPORB,FGL
- MSU: LOC_Os10g35370
- RAPdb: Os10g0496900
- Publication
- Genbank accession number
- Key message
- Rice faded green leaf (fgl) mutants develop yellow/white leaf variegation and necrotic lesions during leaf elongation in field-grown plants
- In fgl, etiolated seedlings contained smaller PLBs in etioplasts, and lower levels of total and photoactive Pchlide
- OsPORA was expressed at high levels in developing leaves and decreased dramatically in fully mature leaves, whereas OsPORB expression was relatively constant throughout leaf development, similar to expression patterns of AtPORA and AtPORB in Arabidopsis
- Our results demonstrate that OsPORB is essential for maintaining light-dependent Chl synthesis throughout leaf development, especially under HL conditions, whereas OsPORA mainly functions in the early stages of leaf development
- OsPORA is expressed in the dark during early leaf development; OsPORB is expressed throughout leaf development regardless of light conditions
- The faded green leaf (fgl) is a loss-of-function osporB mutant that displays necrotic lesions and variegation in the leaves due to destabilized grana thylakoids, and has increased numbers of plastoglobules in the chloroplasts
- The physiological function of OsPORB in response to constant light or during reproductive growth cannot be completely replaced by constitutive activity of OsPORA, although the biochemical functions of OsPORA and OsPORB are redundant
- Connection
- OsPORA, OsPORB~FGL, The rice faded green leaf locus encodes protochlorophyllide oxidoreductase B and is essential for chlorophyll synthesis under high light conditions, OsPORA expression is repressed by light and OsPORB expression is regulated in a circadian rhythm in short-day conditions
- OsPORA, OsPORB~FGL, The rice faded green leaf locus encodes protochlorophyllide oxidoreductase B and is essential for chlorophyll synthesis under high light conditions, OsPORA was expressed at high levels in developing leaves and decreased dramatically in fully mature leaves, whereas OsPORB expression was relatively constant throughout leaf development, similar to expression patterns of AtPORA and AtPORB in Arabidopsis
- OsPORA, OsPORB~FGL, The rice faded green leaf locus encodes protochlorophyllide oxidoreductase B and is essential for chlorophyll synthesis under high light conditions, Our results demonstrate that OsPORB is essential for maintaining light-dependent Chl synthesis throughout leaf development, especially under HL conditions, whereas OsPORA mainly functions in the early stages of leaf development
- OsPORB~FGL, YLC1~OsV5A, Differential Regulation of Protochlorophyllide Oxidoreductase Abundances by VIRESCENT 5A OsV5A and VIRESCENT 5B OsV5B in Rice Seedlings., OsV5A and OsV5B interact with two rice PORs (OsPORA and OsPORB) inside chloroplasts and they stabilize OsPORB in vitro under oxidative stress
- OsPORB~FGL, OsV5B, Differential Regulation of Protochlorophyllide Oxidoreductase Abundances by VIRESCENT 5A OsV5A and VIRESCENT 5B OsV5B in Rice Seedlings., OsV5A and OsV5B interact with two rice PORs (OsPORA and OsPORB) inside chloroplasts and they stabilize OsPORB in vitro under oxidative stress
- OsPORA, OsPORB~FGL, Two NADPH: Protochlorophyllide Oxidoreductase POR Isoforms Play Distinct Roles in Environmental Adaptation in Rice., Rice has two POR isoforms, OsPORA and OsPORB
- OsPORA, OsPORB~FGL, Two NADPH: Protochlorophyllide Oxidoreductase POR Isoforms Play Distinct Roles in Environmental Adaptation in Rice., OsPORA is expressed in the dark during early leaf development; OsPORB is expressed throughout leaf development regardless of light conditions
- OsPORA, OsPORB~FGL, Two NADPH: Protochlorophyllide Oxidoreductase POR Isoforms Play Distinct Roles in Environmental Adaptation in Rice., To investigate whether the function of OsPORA can complement that of OsPORB, we constitutively overexpressed OsPORA in fgl mutant
- OsPORA, OsPORB~FGL, Two NADPH: Protochlorophyllide Oxidoreductase POR Isoforms Play Distinct Roles in Environmental Adaptation in Rice., The physiological function of OsPORB in response to constant light or during reproductive growth cannot be completely replaced by constitutive activity of OsPORA, although the biochemical functions of OsPORA and OsPORB are redundant
- OsGGPPS1, OsPORB~FGL, A recruiting protein of geranylgeranyl diphosphate synthase controls metabolic flux toward chlorophyll biosynthesis in rice., OsGRP determines OsGGPPS1 suborganellar localization and directs it to a large protein complex in thylakoid membranes, consisting of geranylgeranyl reductase (OsGGR), light-harvesting-like protein 3 (OsLIL3), protochlorophyllide oxidoreductase (OsPORB), and chlorophyll synthase (OsCHLG)
- OsGGPPS2~OsGRP, OsPORB~FGL, A recruiting protein of geranylgeranyl diphosphate synthase controls metabolic flux toward chlorophyll biosynthesis in rice., OsGRP determines OsGGPPS1 suborganellar localization and directs it to a large protein complex in thylakoid membranes, consisting of geranylgeranyl reductase (OsGGR), light-harvesting-like protein 3 (OsLIL3), protochlorophyllide oxidoreductase (OsPORB), and chlorophyll synthase (OsCHLG)
- LYL1~OsChlP~OsGGR, OsPORB~FGL, A recruiting protein of geranylgeranyl diphosphate synthase controls metabolic flux toward chlorophyll biosynthesis in rice., OsGRP determines OsGGPPS1 suborganellar localization and directs it to a large protein complex in thylakoid membranes, consisting of geranylgeranyl reductase (OsGGR), light-harvesting-like protein 3 (OsLIL3), protochlorophyllide oxidoreductase (OsPORB), and chlorophyll synthase (OsCHLG)
- OsLIL3, OsPORB~FGL, A recruiting protein of geranylgeranyl diphosphate synthase controls metabolic flux toward chlorophyll biosynthesis in rice., OsGRP determines OsGGPPS1 suborganellar localization and directs it to a large protein complex in thylakoid membranes, consisting of geranylgeranyl reductase (OsGGR), light-harvesting-like protein 3 (OsLIL3), protochlorophyllide oxidoreductase (OsPORB), and chlorophyll synthase (OsCHLG)
- OsPORB~FGL, YGL1~OsCHLG, A recruiting protein of geranylgeranyl diphosphate synthase controls metabolic flux toward chlorophyll biosynthesis in rice., OsGRP determines OsGGPPS1 suborganellar localization and directs it to a large protein complex in thylakoid membranes, consisting of geranylgeranyl reductase (OsGGR), light-harvesting-like protein 3 (OsLIL3), protochlorophyllide oxidoreductase (OsPORB), and chlorophyll synthase (OsCHLG)
- OsPIL13~OsPIL1, OsPORB~FGL, Rice Phytochrome-Interacting Factor-Like1 OsPIL1 is involved in the promotion of chlorophyll biosynthesis through feed-forward regulatory loops., Using promoter binding and transactivation assays, we found that OsPIL1 binds to the promoters of two Chl biosynthetic genes, OsPORB and OsCAO1, and promotes their transcription
- OsPIL13~OsPIL1, OsPORB~FGL, Rice Phytochrome-Interacting Factor-Like1 OsPIL1 is involved in the promotion of chlorophyll biosynthesis through feed-forward regulatory loops., Thus, OsPIL1 is involved in the promotion of Chl biosynthesis by up-regulating the transcription of OsPORB and OsCAO1 via trifurcate feed-forward regulatory loops involving two OsGLKs
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