Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64
Plant phosphorus (P) remobilisation during leaf senescence has fundamental implications for global P cycle fluxes. Hypothesising that genes involved in remobilisation of P from leaves during grain filling would show altered expression in response to P deprivation, we investigated gene expression in...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Public Library of Science
2018
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/164804 |
| _version_ | 1855540108211519488 |
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| author | Jeong, Kwanho Pantoja, Omar Baten, Abdul Waters, Daniel Kretzschmar, Tobias Wissuwa, Matthias Julia, Cecile C. Heuer, Sigrid Rose, Terry J. |
| author_browse | Baten, Abdul Heuer, Sigrid Jeong, Kwanho Julia, Cecile C. Kretzschmar, Tobias Pantoja, Omar Rose, Terry J. Waters, Daniel Wissuwa, Matthias |
| author_facet | Jeong, Kwanho Pantoja, Omar Baten, Abdul Waters, Daniel Kretzschmar, Tobias Wissuwa, Matthias Julia, Cecile C. Heuer, Sigrid Rose, Terry J. |
| author_sort | Jeong, Kwanho |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Plant phosphorus (P) remobilisation during leaf senescence has fundamental implications for global P cycle fluxes. Hypothesising that genes involved in remobilisation of P from leaves during grain filling would show altered expression in response to P deprivation, we investigated gene expression in rice flag leaves at 8 days after anthesis (DAA) and 16 DAA in plants that received a continuous supply of P in the nutrient solution vs plants where P was omitted from the nutrient solution for 8 consecutive days prior to measurement. The transcriptional response to growth in the absence of P differed between the early stage (8 DAA) and the later stage (16 DAA) of grain filling. At 8 DAA, rice plants maintained production of energy substrates through upregulation of genes involved in photosynthesis. In contrast, at 16 DAA carbon substrates were produced by degradation of structural polysaccharides and over 50% of highly upregulated genes in P-deprived plants were associated with protein degradation and nitrogen/amino acid transport, suggesting withdrawal of P from the nutrient solution led to accelerated senescence. Genes involved in liberating inorganic P from the organic P compounds and vacuolar P transporters displayed differential expression depending on the stage of grain filling stage and timing of P withdrawal |
| format | Journal Article |
| id | CGSpace164804 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Public Library of Science |
| publisherStr | Public Library of Science |
| record_format | dspace |
| spelling | CGSpace1648042025-01-24T14:20:47Z Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 Jeong, Kwanho Pantoja, Omar Baten, Abdul Waters, Daniel Kretzschmar, Tobias Wissuwa, Matthias Julia, Cecile C. Heuer, Sigrid Rose, Terry J. chemicophysical properties flag leaf leaf senescence phosphorus seed filling Plant phosphorus (P) remobilisation during leaf senescence has fundamental implications for global P cycle fluxes. Hypothesising that genes involved in remobilisation of P from leaves during grain filling would show altered expression in response to P deprivation, we investigated gene expression in rice flag leaves at 8 days after anthesis (DAA) and 16 DAA in plants that received a continuous supply of P in the nutrient solution vs plants where P was omitted from the nutrient solution for 8 consecutive days prior to measurement. The transcriptional response to growth in the absence of P differed between the early stage (8 DAA) and the later stage (16 DAA) of grain filling. At 8 DAA, rice plants maintained production of energy substrates through upregulation of genes involved in photosynthesis. In contrast, at 16 DAA carbon substrates were produced by degradation of structural polysaccharides and over 50% of highly upregulated genes in P-deprived plants were associated with protein degradation and nitrogen/amino acid transport, suggesting withdrawal of P from the nutrient solution led to accelerated senescence. Genes involved in liberating inorganic P from the organic P compounds and vacuolar P transporters displayed differential expression depending on the stage of grain filling stage and timing of P withdrawal 2018-09-13 2024-12-19T12:54:19Z 2024-12-19T12:54:19Z Journal Article https://hdl.handle.net/10568/164804 en Open Access Public Library of Science Jeong, Kwanho; Pantoja, Omar; Baten, Abdul; Waters, Daniel; Kretzschmar, Tobias; Wissuwa, Matthias; Julia, Cecile C.; Heuer, Sigrid and Rose, Terry J. 2018. Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64. PLoS ONE, Volume 13 no. 9 p. e0203654 |
| spellingShingle | chemicophysical properties flag leaf leaf senescence phosphorus seed filling Jeong, Kwanho Pantoja, Omar Baten, Abdul Waters, Daniel Kretzschmar, Tobias Wissuwa, Matthias Julia, Cecile C. Heuer, Sigrid Rose, Terry J. Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 |
| title | Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 |
| title_full | Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 |
| title_fullStr | Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 |
| title_full_unstemmed | Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 |
| title_short | Transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv. IR64 |
| title_sort | transcriptional response of rice flag leaves to restricted external phosphorus supply during grain filling in rice cv ir64 |
| topic | chemicophysical properties flag leaf leaf senescence phosphorus seed filling |
| url | https://hdl.handle.net/10568/164804 |
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