The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.)
Rising temperatures due to climate change threaten agricultural crop productivity. As a cool-season crop, wheat is heat-sensitive, but often exposed to high temperatures during the cultivation period. In the current study, a bread wheat panel of spring wheat genotypes, including putatively heat-tole...
| Autores principales: | , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Frontiers Media
2022
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/129184 |
| _version_ | 1855526125984284672 |
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| author | Jiemeng Xu Lowe, Claudia Hernandez Leon, Sergio G. Dreisigacker, Susanne Reynolds, Matthew P. Valenzuela Soto, Elisa M. Paul, Matthew J. Heuer, Sigrid |
| author_browse | Dreisigacker, Susanne Hernandez Leon, Sergio G. Heuer, Sigrid Jiemeng Xu Lowe, Claudia Paul, Matthew J. Reynolds, Matthew P. Valenzuela Soto, Elisa M. |
| author_facet | Jiemeng Xu Lowe, Claudia Hernandez Leon, Sergio G. Dreisigacker, Susanne Reynolds, Matthew P. Valenzuela Soto, Elisa M. Paul, Matthew J. Heuer, Sigrid |
| author_sort | Jiemeng Xu |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rising temperatures due to climate change threaten agricultural crop productivity. As a cool-season crop, wheat is heat-sensitive, but often exposed to high temperatures during the cultivation period. In the current study, a bread wheat panel of spring wheat genotypes, including putatively heat-tolerant Australian and CIMMYT genotypes, was exposed to a 5-day mild (34°C/28°C, day/night) or extreme (37°C/27°C) heat stress during the sensitive pollen developmental stage. Worsening effects on anther morphology were observed, as heat stress increased from mild to extreme. Even under mild heat, a significant decrease in pollen viability and number of grains per spike from primary spike was observed compared with the control (21°C/15°C), with Sunstar and two CIMMYT breeding lines performing well. A heat-specific positive correlation between the two traits indicates the important role of pollen fertility for grain setting. Interestingly, both mild and extreme heat induced development of new tillers after the heat stress, providing an alternative sink for accumulated photosynthates and significantly contributing to the final yield. Measurements of flag leaf maximum potential quantum efficiency of photosystem II (Fv/Fm) showed an initial inhibition after the heat treatment, followed by a full recovery within a few days. Despite this, model fitting using chlorophyll soil plant analysis development (SPAD) measurements showed an earlier onset or faster senescence rate under heat stress. The data presented here provide interesting entry points for further research into pollen fertility, tillering dynamics, and leaf senescence under heat. The identified heat-tolerant wheat genotypes can be used to dissect the underlying mechanisms and breed climate-resilient wheat. |
| format | Journal Article |
| id | CGSpace129184 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Frontiers Media |
| publisherStr | Frontiers Media |
| record_format | dspace |
| spelling | CGSpace1291842025-12-08T10:29:22Z The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) Jiemeng Xu Lowe, Claudia Hernandez Leon, Sergio G. Dreisigacker, Susanne Reynolds, Matthew P. Valenzuela Soto, Elisa M. Paul, Matthew J. Heuer, Sigrid heat stress pollen tillering wheat climate change Rising temperatures due to climate change threaten agricultural crop productivity. As a cool-season crop, wheat is heat-sensitive, but often exposed to high temperatures during the cultivation period. In the current study, a bread wheat panel of spring wheat genotypes, including putatively heat-tolerant Australian and CIMMYT genotypes, was exposed to a 5-day mild (34°C/28°C, day/night) or extreme (37°C/27°C) heat stress during the sensitive pollen developmental stage. Worsening effects on anther morphology were observed, as heat stress increased from mild to extreme. Even under mild heat, a significant decrease in pollen viability and number of grains per spike from primary spike was observed compared with the control (21°C/15°C), with Sunstar and two CIMMYT breeding lines performing well. A heat-specific positive correlation between the two traits indicates the important role of pollen fertility for grain setting. Interestingly, both mild and extreme heat induced development of new tillers after the heat stress, providing an alternative sink for accumulated photosynthates and significantly contributing to the final yield. Measurements of flag leaf maximum potential quantum efficiency of photosystem II (Fv/Fm) showed an initial inhibition after the heat treatment, followed by a full recovery within a few days. Despite this, model fitting using chlorophyll soil plant analysis development (SPAD) measurements showed an earlier onset or faster senescence rate under heat stress. The data presented here provide interesting entry points for further research into pollen fertility, tillering dynamics, and leaf senescence under heat. The identified heat-tolerant wheat genotypes can be used to dissect the underlying mechanisms and breed climate-resilient wheat. 2022-05-16 2023-03-03T16:22:54Z 2023-03-03T16:22:54Z Journal Article https://hdl.handle.net/10568/129184 en Open Access application/pdf Frontiers Media Xu, J., Lowe, C., Hernandez-Leon, S. G., Dreisigacker, S., Reynolds, M. P., Valenzuela-Soto, E. M., Paul, M. J., & Heuer, S. (2022). The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.). Frontiers in Plant Science, 13. https://doi.org/10.3389/fpls.2022.886541 |
| spellingShingle | heat stress pollen tillering wheat climate change Jiemeng Xu Lowe, Claudia Hernandez Leon, Sergio G. Dreisigacker, Susanne Reynolds, Matthew P. Valenzuela Soto, Elisa M. Paul, Matthew J. Heuer, Sigrid The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) |
| title | The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) |
| title_full | The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) |
| title_fullStr | The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) |
| title_full_unstemmed | The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) |
| title_short | The Effects of Brief Heat During Early Booting on Reproductive, Developmental, and Chlorophyll Physiological Performance in Common Wheat (Triticum aestivum L.) |
| title_sort | effects of brief heat during early booting on reproductive developmental and chlorophyll physiological performance in common wheat triticum aestivum l |
| topic | heat stress pollen tillering wheat climate change |
| url | https://hdl.handle.net/10568/129184 |
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