- Information
- Symbol: SGR,OsSGR
- MSU: LOC_Os09g36200
- RAPdb: Os09g0532000
- Publication
- The Stay-Green Rice like SGRL gene regulates chlorophyll degradation in rice, 2013, J Plant Physiol.
- Molecular cloning and function analysis of the stay green gene in rice, 2007, Plant J.
- Overexpression of SGR results in oxidative stress and lesion-mimic cell death in rice seedlings, 2011, J Integr Plant Biol.
- Natural variations at the Stay-Green gene promoter control lifespan and yield in rice cultivars., 2020, Nat Commun.
- Characterization of a novel allele encoding pheophorbide a oxygenase in rice, 2020, Plant Signal Behav.
- Genbank accession number
- Key message
- SGR, like the gene for pheophorbide a oxygenase (PaO), was constitutively expressed, but was upregulated by dark-induced senescence in rice leaves
- Senescence-induced expression of SGR and PaO was enhanced by ABA, but inhibited by cytokinin
- This indicates that upregulation of SGR increases Chl breakdown during senescence in rice
- A small quantity of chlorophyllide a accumulated in sgr leaves, but this also accumulated in wild-type rice leaves during senescence
- In this study, we found that overexpression of SGR (Ov-SGR) resulted in the generation of singlet oxygen and other reactive oxygen species and produced a chlorophyll-dependent regional cell death phenotype on leaves of rice seedlings
- Transcriptome analyses using Affymetrix Rice GeneChips revealed that Ov-SGR rice seedlings exhibited a number of signs of singlet oxygen response
- Overexpression of SGR results in oxidative stress and lesion-mimic cell death in rice seedlings
- The Stay-Green Rice (SGR) protein is encoded by the SGR gene and has been shown to affect chlorophyll (Chl) degradation during natural and dark-induced leaf senescence
- We show that SGRL is primarily expressed in green tissues, and is significantly downregulated in rice leaves undergoing natural and dark-induced senescence
- Overexpression of SGRL reduces the levels of Chl and Chl-binding proteins in leaves, and accelerates their degradation in dark-induced senescence leaves in rice
- The gene, designated Stay Green Rice (SGR), was cloned by a positional cloning strategy encoding an ancient protein containing a putative chloroplast transit peptide
- It is thought that the Stay Green Rice (SGR) gene is involved in the disaggregation of the light harvesting complex and in the subsequent breakdown of chlorophyll and apo-protein during senescence
- Promoter variations in the Stay-Green (OsSGR) gene encoding the chlorophyll-degrading Mg++-dechelatase were found to trigger higher and earlier induction of OsSGR in indica, which accelerated senescence of indica rice cultivars
- Japonica OsSGR alleles introgressed into indica-type cultivars in Korean rice fields lead to delayed senescence, with increased grain yield and enhanced photosynthetic competence
- Taken together, these data establish that naturally occurring OsSGR promoter and related lifespan variations can be exploited in breeding programs to augment rice yield
- Connection
- OsSGRL, SGR~OsSGR, The Stay-Green Rice like SGRL gene regulates chlorophyll degradation in rice, The relationship between SGRL and SGR and their effects on the degradation of the light-harvesting Chl a/b-binding protein are also discussed
- OsPAO, SGR~OsSGR, Molecular cloning and function analysis of the stay green gene in rice, SGR, like the gene for pheophorbide a oxygenase (PaO), was constitutively expressed, but was upregulated by dark-induced senescence in rice leaves
- OsPAO, SGR~OsSGR, Molecular cloning and function analysis of the stay green gene in rice, Senescence-induced expression of SGR and PaO was enhanced by ABA, but inhibited by cytokinin
- OsPAO, SGR~OsSGR, Molecular cloning and function analysis of the stay green gene in rice, According to these observations, we propose that SGR may be involved in regulating or taking part in the activity of PaO, and then may influence Chl breakdown and degradation of pigment-protein complex
- ONAC106, SGR~OsSGR, Rice ONAC106 inhibits leaf senescence and increases salt tolerance and tiller angle., Using yeast one-hybrid assays, we found that ONAC106 binds to the promoter regions of SGR, NYC1, OsNAC5, and LPA1
- OsBBS1~OsRLCK109~LMM24, SGR~OsSGR, LMM24 Encodes Receptor-Like Cytoplasmic Kinase 109, Which Regulates Cell Death and Defense Responses in Rice., Chloroplast degradation was observed in lmm24 leaves, with decreased expression of photosynthesis-related genes and increased expression of the senescence-induced STAYGREEN (SGR) gene and other senescence-associated genes
- OsRap2.6~OsERF101, SGR~OsSGR, Rice ETHYLENE RESPONSE FACTOR 101 Promotes Leaf Senescence Through Jasmonic Acid-Mediated Regulation of OsNAP and OsMYC2, Consistent with its delayed-yellowing phenotype, the oserf101 mutant exhibited downregulation of genes involved in chlorophyll degradation, including rice NAM, ATAF1/2, and CUC2 (OsNAP), STAY-GREEN (SGR), NON-YELLOW COLORING 1 (NYC1), and NYC3 during DIS
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