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Rice phytochrome B (OsPhyB) negatively regulates dark- and nitrogen starvation-induced leaf senescence
DC Field | Value | Language |
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dc.contributor.author | Piao, Weilan | en |
dc.contributor.author | Kim, Eun-Young | - |
dc.contributor.author | Han, Su-Hyun | - |
dc.contributor.author | Sakuraba, Yasuhito | - |
dc.contributor.author | Paek, Nam-Chon | - |
dc.date.accessioned | 2016-01-25T05:15:59Z | - |
dc.date.available | 2016-01-25T05:15:59Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Plants, vol.4, pp. 644-663 | - |
dc.identifier.uri | https://hdl.handle.net/10371/95413 | - |
dc.description.abstract | Light regulates leaf senescence and light deprivation causes large-scale transcriptional reprogramming to dismantle cellular components and remobilize nutrients to sink organs, such as seeds and storage tissue. We recently reported that in Arabidopsis (Arabidopsis thaliana), Phytochrome-Interacting Factor4 (PIF4) and PIF5 promote dark-induced senescence and natural senescence by directly activating the expression of typical senescence-associated genes (SAGs), including ORESARA1 (ORE1) and ETHYLENE INSENSITIVE3 (EIN3). In contrast, phytochrome B (PhyB) inhibits leaf senescence by repressing PIF4 and PIF5 at the post-translational level. Although we found how red light signaling represses leaf senescence in Arabidopsis, it remains unknown whether PhyB and/or PhyA are involved in leaf senescence in rice (Oryza sativa). Here we show that rice phyB knockout mutants (osphyB-1, -2, and –3) exhibited an early senescence phenotype during dark-induced senescence, but an osphyA knockout mutant (osphyA-3) senesced normally. The RT-qPCR analysis revealed that several senescence-associated genes, including OsORE1 and OsEIN3, were significantly up-regulated in osphyB-2 mutants, indicating that OsPhyB also inhibits leaf senescence, like Arabidopsis PhyB. We also found that leaf segments of osphyB-2 senesced faster even under light conditions. Supplementation with nitrogen compounds, such as KNO3 and NH4NO3, rescued the early senescence phenotype of osphyB-2, indicating that starvation is one of the major signaling factors in the OsPhyB-dependent leaf senescence pathway. | - |
dc.language.iso | en | - |
dc.publisher | MDPI | - |
dc.subject | rice | - |
dc.subject | leaf senescence | - |
dc.subject | phytochrome B | - |
dc.subject | dark-induced senescence | - |
dc.subject | starvation-induced senescence | - |
dc.title | Rice phytochrome B (OsPhyB) negatively regulates dark- and nitrogen starvation-induced leaf senescence | en |
dc.type | Article | - |
dc.contributor.AlternativeAuthor | 김은영 | - |
dc.contributor.AlternativeAuthor | 한수현 | - |
dc.contributor.AlternativeAuthor | 백남천 | - |
dc.identifier.doi | 10.3390/plants4030644 | - |
dc.description.srnd | OAIID:oai:osos.snu.ac.kr:snu2015-01/102/0000003606/11 | - |
dc.description.srnd | ADJUST_YN:N | - |
dc.description.srnd | EMP_ID:A002118 | - |
dc.description.srnd | DEPT_CD:517 | - |
dc.description.srnd | CITE_RATE:0 | - |
dc.description.srnd | FILENAME:2015-10 osphyb (plants)-weilan.pdf | - |
dc.description.srnd | DEPT_NM:식물생산과학부 | - |
dc.description.srnd | SCOPUS_YN:N | - |
dc.description.srnd | CONFIRM:Y | - |
dc.identifier.srnd | 2015-01/102/0000003606/11 | - |
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