Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms
Several breeding initiatives have sought to improve flag leaf performance as its health and physiology are closely correlated to rice yield. Previous studies have described natural variation of photosynthesis for flag leaves; however, none has examined their performance under the non-steady-state co...
| Autores principales: | , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Oxford University Press
2021
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/164400 |
| _version_ | 1855534930963988480 |
|---|---|
| author | Acevedo-Siaca, Liana G. Coe, Robert Quick, W. Paul Long, Stephen P. |
| author_browse | Acevedo-Siaca, Liana G. Coe, Robert Long, Stephen P. Quick, W. Paul |
| author_facet | Acevedo-Siaca, Liana G. Coe, Robert Quick, W. Paul Long, Stephen P. |
| author_sort | Acevedo-Siaca, Liana G. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Several breeding initiatives have sought to improve flag leaf performance as its health and physiology are closely correlated to rice yield. Previous studies have described natural variation of photosynthesis for flag leaves; however, none has examined their performance under the non-steady-state conditions that prevail in crop fields. Photosynthetic induction is the transient response of photosynthesis to a change from low to high light. Rice flag leaf photosynthesis was measured in both steady- and non-steady-state conditions to characterize natural variation. Between the lowest and highest performing accession, there was a 152% difference for average CO2 assimilation during induction (Ā300), a 77% difference for average intrinsic water use efficiency during induction (iWUEavg), and a 185% difference for the speed of induction (IT50), indicating plentiful variation. No significant correlation was found between steady- and non-steady-state photosynthetic traits. Additionally, measures of neither steady-state nor non-steady-state photosynthesis of flag leaves correlated with the same measures of leaves in the vegetative growth stage, with the exception of iWUEavg. Photosynthetic induction was measured at six [CO2], to determine biochemical and diffusive limitations to photosynthesis in vivo. Photosynthetic induction in rice flag leaves was limited primarily by biochemistry. |
| format | Journal Article |
| id | CGSpace164400 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | Oxford University Press |
| publisherStr | Oxford University Press |
| record_format | dspace |
| spelling | CGSpace1644002025-12-08T09:54:28Z Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms Acevedo-Siaca, Liana G. Coe, Robert Quick, W. Paul Long, Stephen P. physiology plant science Several breeding initiatives have sought to improve flag leaf performance as its health and physiology are closely correlated to rice yield. Previous studies have described natural variation of photosynthesis for flag leaves; however, none has examined their performance under the non-steady-state conditions that prevail in crop fields. Photosynthetic induction is the transient response of photosynthesis to a change from low to high light. Rice flag leaf photosynthesis was measured in both steady- and non-steady-state conditions to characterize natural variation. Between the lowest and highest performing accession, there was a 152% difference for average CO2 assimilation during induction (Ā300), a 77% difference for average intrinsic water use efficiency during induction (iWUEavg), and a 185% difference for the speed of induction (IT50), indicating plentiful variation. No significant correlation was found between steady- and non-steady-state photosynthetic traits. Additionally, measures of neither steady-state nor non-steady-state photosynthesis of flag leaves correlated with the same measures of leaves in the vegetative growth stage, with the exception of iWUEavg. Photosynthetic induction was measured at six [CO2], to determine biochemical and diffusive limitations to photosynthesis in vivo. Photosynthetic induction in rice flag leaves was limited primarily by biochemistry. 2021-02-24 2024-12-19T12:53:51Z 2024-12-19T12:53:51Z Journal Article https://hdl.handle.net/10568/164400 en Open Access Oxford University Press Acevedo-Siaca, Liana G; Coe, Robert; Quick, W Paul and Long, Stephen P. 2021. Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms. Journal of Experimental Botany, Volume 72 no. 4; pages 1282-1294. |
| spellingShingle | physiology plant science Acevedo-Siaca, Liana G. Coe, Robert Quick, W. Paul Long, Stephen P. Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| title | Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| title_full | Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| title_fullStr | Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| title_full_unstemmed | Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| title_short | Variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| title_sort | variation between rice accessions in photosynthetic induction in flag leaves and underlying mechanisms |
| topic | physiology plant science |
| url | https://hdl.handle.net/10568/164400 |
| work_keys_str_mv | AT acevedosiacalianag variationbetweenriceaccessionsinphotosyntheticinductioninflagleavesandunderlyingmechanisms AT coerobert variationbetweenriceaccessionsinphotosyntheticinductioninflagleavesandunderlyingmechanisms AT quickwpaul variationbetweenriceaccessionsinphotosyntheticinductioninflagleavesandunderlyingmechanisms AT longstephenp variationbetweenriceaccessionsinphotosyntheticinductioninflagleavesandunderlyingmechanisms |