Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought
Soil drying causes leaf rolling in rice, but the relationship between leaf rolling and drought tolerance has historically confounded selection of drought tolerant genotypes. In this study on tropical japonica and aus diversity panels (170‐220 genotypes), the degree of leaf rolling under drought was...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/99327 |
| _version_ | 1855523811784392704 |
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| author | Cal, Andrew J. Sanciangco, Millicent Rebolledo, María Camila Luquet, Delphine Torres, Rolando O. McNally, Kenneth L. Henr, Amelia |
| author_browse | Cal, Andrew J. Henr, Amelia Luquet, Delphine McNally, Kenneth L. Rebolledo, María Camila Sanciangco, Millicent Torres, Rolando O. |
| author_facet | Cal, Andrew J. Sanciangco, Millicent Rebolledo, María Camila Luquet, Delphine Torres, Rolando O. McNally, Kenneth L. Henr, Amelia |
| author_sort | Cal, Andrew J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Soil drying causes leaf rolling in rice, but the relationship between leaf rolling and drought tolerance has historically confounded selection of drought tolerant genotypes. In this study on tropical japonica and aus diversity panels (170‐220 genotypes), the degree of leaf rolling under drought was more affected by leaf morphology than by stomatal conductance, leaf water status, or maintenance of shoot biomass and grain yield. A range of canopy temperature and leaf rolling (measured as change in normalized difference vegetation index (ΔNDVI)) combinations were observed among aus genotypes, indicating that some genotypes continued transpiration while rolled. Association mapping indicated co‐location of genomic regions for leaf rolling score and ΔNDVI under drought with previously reported leaf rolling genes and gene networks related to leaf anatomy. The relatively subtle variation across these large diversity panels may explain the lack of agreement of this study with earlier reports that used small numbers of genotypes that were highly divergent in hydraulic traits driving leaf rolling differences. This study highlights the large range of physiological responses to drought among rice genotypes, and emphasizes that drought response processes should be understood in detail before incorporating them into a varietal selection program. |
| format | Journal Article |
| id | CGSpace99327 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace993272025-03-13T09:44:12Z Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought Cal, Andrew J. Sanciangco, Millicent Rebolledo, María Camila Luquet, Delphine Torres, Rolando O. McNally, Kenneth L. Henr, Amelia rice drought stress drought resistance genotypes greenhouse gases yield Soil drying causes leaf rolling in rice, but the relationship between leaf rolling and drought tolerance has historically confounded selection of drought tolerant genotypes. In this study on tropical japonica and aus diversity panels (170‐220 genotypes), the degree of leaf rolling under drought was more affected by leaf morphology than by stomatal conductance, leaf water status, or maintenance of shoot biomass and grain yield. A range of canopy temperature and leaf rolling (measured as change in normalized difference vegetation index (ΔNDVI)) combinations were observed among aus genotypes, indicating that some genotypes continued transpiration while rolled. Association mapping indicated co‐location of genomic regions for leaf rolling score and ΔNDVI under drought with previously reported leaf rolling genes and gene networks related to leaf anatomy. The relatively subtle variation across these large diversity panels may explain the lack of agreement of this study with earlier reports that used small numbers of genotypes that were highly divergent in hydraulic traits driving leaf rolling differences. This study highlights the large range of physiological responses to drought among rice genotypes, and emphasizes that drought response processes should be understood in detail before incorporating them into a varietal selection program. 2019-05 2019-02-07T19:03:22Z 2019-02-07T19:03:22Z Journal Article https://hdl.handle.net/10568/99327 en Open Access Wiley Cal, Andrew J.; Sanciangco, Millicent; Rebolledo, Maria Camila; Luquet, Delphine; Torres, Rolando O.; McNally, Kenneth L. & Henr, Amelia (2019). Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought. Plant, Cell and Environment. 42(5): 1532-1544. |
| spellingShingle | rice drought stress drought resistance genotypes greenhouse gases yield Cal, Andrew J. Sanciangco, Millicent Rebolledo, María Camila Luquet, Delphine Torres, Rolando O. McNally, Kenneth L. Henr, Amelia Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought |
| title | Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought |
| title_full | Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought |
| title_fullStr | Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought |
| title_full_unstemmed | Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought |
| title_short | Leaf morphology, rather than plant water status, underlies genetic variation of rice leaf rolling under drought |
| title_sort | leaf morphology rather than plant water status underlies genetic variation of rice leaf rolling under drought |
| topic | rice drought stress drought resistance genotypes greenhouse gases yield |
| url | https://hdl.handle.net/10568/99327 |
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