Regulation and recovery of sink strength in rice plants grown under changes in light intensity
The aim of this study was to characterise the sequence of traits that influence the response of rice morphogenesis to a shortage in carbohydrate supply and to its recovery. Plants were grown under 70% shading or full-light exposure for distinct periods during the vegetative and early reproductive ph...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Commonwealth Scientific and Industrial Research Organisation
2010
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/166087 |
| _version_ | 1855527771270283264 |
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| author | Lafarge, Tanguy Seassau, Célia Martin, Meryll Bueno, Crisanta Clément-Vidal, Anne Schreck, Eva Luquet, Delphine |
| author_browse | Bueno, Crisanta Clément-Vidal, Anne Lafarge, Tanguy Luquet, Delphine Martin, Meryll Schreck, Eva Seassau, Célia |
| author_facet | Lafarge, Tanguy Seassau, Célia Martin, Meryll Bueno, Crisanta Clément-Vidal, Anne Schreck, Eva Luquet, Delphine |
| author_sort | Lafarge, Tanguy |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The aim of this study was to characterise the sequence of traits that influence the response of rice morphogenesis to a shortage in carbohydrate supply and to its recovery. Plants were grown under 70% shading or full-light exposure for distinct periods during the vegetative and early reproductive phases in field and controlled environments. Lower organ vigour (i.e. higher specific leaf area and specific stem length), sugar concentration, tiller emergence and leaf elongation rate; higher leaf blade to sheath length ratio and preferential assimilate allocation to sink (elongating) leaves, were observed soon after the onset of shading. Organ vigour was affected before any appreciable effect on tiller emergence was noted. All the processes resumed after the shading removal, which coincided with a boost in sugar concentration; however, the extent of recovery in organ vigour and tillering depended on the growth stage at which shading was applied. It is concluded that crop response to changes in carbohydrate supply at the early stage favoured leaf area production by adjusting transient reserve levels and biomass allocation. Results of this study provide further insights into the role of soluble carbohydrates in plant and crop phenotypic plasticity and, thus, into the value of such processes in plant growth models. |
| format | Journal Article |
| id | CGSpace166087 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| publisher | Commonwealth Scientific and Industrial Research Organisation |
| publisherStr | Commonwealth Scientific and Industrial Research Organisation |
| record_format | dspace |
| spelling | CGSpace1660872025-12-08T10:29:22Z Regulation and recovery of sink strength in rice plants grown under changes in light intensity Lafarge, Tanguy Seassau, Célia Martin, Meryll Bueno, Crisanta Clément-Vidal, Anne Schreck, Eva Luquet, Delphine biomass carbohydrates growth growth stages leaf area leaves light intensity morphogenesis phenotypes shading starch tillering tillers The aim of this study was to characterise the sequence of traits that influence the response of rice morphogenesis to a shortage in carbohydrate supply and to its recovery. Plants were grown under 70% shading or full-light exposure for distinct periods during the vegetative and early reproductive phases in field and controlled environments. Lower organ vigour (i.e. higher specific leaf area and specific stem length), sugar concentration, tiller emergence and leaf elongation rate; higher leaf blade to sheath length ratio and preferential assimilate allocation to sink (elongating) leaves, were observed soon after the onset of shading. Organ vigour was affected before any appreciable effect on tiller emergence was noted. All the processes resumed after the shading removal, which coincided with a boost in sugar concentration; however, the extent of recovery in organ vigour and tillering depended on the growth stage at which shading was applied. It is concluded that crop response to changes in carbohydrate supply at the early stage favoured leaf area production by adjusting transient reserve levels and biomass allocation. Results of this study provide further insights into the role of soluble carbohydrates in plant and crop phenotypic plasticity and, thus, into the value of such processes in plant growth models. 2010 2024-12-19T12:55:51Z 2024-12-19T12:55:51Z Journal Article https://hdl.handle.net/10568/166087 en Commonwealth Scientific and Industrial Research Organisation Lafarge, Tanguy; Seassau, Célia; Martin, Meryll; Bueno, Crisanta; Clément-Vidal, Anne; Schreck, Eva and Luquet, Delphine. 2010. Regulation and recovery of sink strength in rice plants grown under changes in light intensity. Functional Plant Biol., Volume 37 no. 5 p. 413 |
| spellingShingle | biomass carbohydrates growth growth stages leaf area leaves light intensity morphogenesis phenotypes shading starch tillering tillers Lafarge, Tanguy Seassau, Célia Martin, Meryll Bueno, Crisanta Clément-Vidal, Anne Schreck, Eva Luquet, Delphine Regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| title | Regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| title_full | Regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| title_fullStr | Regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| title_full_unstemmed | Regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| title_short | Regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| title_sort | regulation and recovery of sink strength in rice plants grown under changes in light intensity |
| topic | biomass carbohydrates growth growth stages leaf area leaves light intensity morphogenesis phenotypes shading starch tillering tillers |
| url | https://hdl.handle.net/10568/166087 |
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