Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice
Background: Crop yields have been affected by many different biotic and abiotic factors. Generally, plants experience more than one stress during their life cycle, and plants can tolerate multiple stresses and develop cross-tolerance. The expected rise in atmospheric CO<sub>2</sub> conce...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/17/3133 |
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| author | Anderson da Rosa Feijó Vívian Ebeling Viana Andrisa Balbinot Marcus Vinicius Fipke Gustavo Maia Souza Luciano do Amarante Luis Antonio de Avila |
| author_facet | Anderson da Rosa Feijó Vívian Ebeling Viana Andrisa Balbinot Marcus Vinicius Fipke Gustavo Maia Souza Luciano do Amarante Luis Antonio de Avila |
| author_sort | Anderson da Rosa Feijó |
| collection | DOAJ |
| description | Background: Crop yields have been affected by many different biotic and abiotic factors. Generally, plants experience more than one stress during their life cycle, and plants can tolerate multiple stresses and develop cross-tolerance. The expected rise in atmospheric CO<sub>2</sub> concentration ([CO<sub>2</sub>]) can contribute to cross-tolerance. Priming is a strategy to increase yield or to maintain yield under stress conditions. Thus, our objective was to evaluate if priming the rice plants with water deficit during the vegetative stage can induce tolerance to heat stress at anthesis and to evaluate the contribution of <i>e</i>[CO<sub>2</sub>]. Methods: The experiment was arranged in a completely randomized design in a factorial arrangement. Factor A consisted of the following treatments: water deficit at four-leaf stage (no-stress, and drought stress), heat at anthesis (normal temperature, high temperature), and priming with water deficit at four-leaf stage and heat stress at anthesis; and Factor B was two [CO<sub>2</sub>] treatments: <i>a</i>[CO<sub>2</sub>] = 400 ± 40 μmol mol<sup>−1</sup> and <i>e</i>[CO<sub>2</sub>] = 700 ± 40 μmol mol<sup>−1</sup>. We assessed the effect of the treatments on plant growth, yield, biochemical, and transcriptome alterations. Results: Although <i>e</i>[CO<sub>2</sub>] affected rice growth parameters, it did not affect the priming effect. Primed plants showed an increase in yield and number of panicles per plant. Primed plants showed upregulation of <i>OsHSP16.9A</i>, <i>OsHSP70.1</i>, and <i>OsHSP70.6</i>. These results showed induced cross-tolerance. Conclusions: Water deficit at the rice vegetative stage reduces the effect of heat stress at the reproductive stage. Water deficit at the vegetative stage can be used, after further testing in field conditions, to reduce the effect of heat stress during flowering in rice. |
| first_indexed | 2024-03-10T23:15:05Z |
| format | Article |
| id | doaj.art-2244dd3712684e0b965521715ef3ac1e |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T23:15:05Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-2244dd3712684e0b965521715ef3ac1e2023-11-19T08:41:48ZengMDPI AGPlants2223-77472023-08-011217313310.3390/plants12173133Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in RiceAnderson da Rosa Feijó0Vívian Ebeling Viana1Andrisa Balbinot2Marcus Vinicius Fipke3Gustavo Maia Souza4Luciano do Amarante5Luis Antonio de Avila6Plant Physiology Graduate Program, Federal University of Pelotas, Pelotas 96160-000, BrazilCrop Protection Graduate Program, Federal University of Pelotas, Pelotas 96015-560, BrazilCrop Protection Graduate Program, Federal University of Pelotas, Pelotas 96015-560, BrazilCrop Protection Graduate Program, Federal University of Pelotas, Pelotas 96015-560, BrazilPlant Physiology Graduate Program, Federal University of Pelotas, Pelotas 96160-000, BrazilPlant Physiology Graduate Program, Federal University of Pelotas, Pelotas 96160-000, BrazilDepartment of Soil and Crop Sciences, Mississippi State University, Mississippi State, MS 39762, USABackground: Crop yields have been affected by many different biotic and abiotic factors. Generally, plants experience more than one stress during their life cycle, and plants can tolerate multiple stresses and develop cross-tolerance. The expected rise in atmospheric CO<sub>2</sub> concentration ([CO<sub>2</sub>]) can contribute to cross-tolerance. Priming is a strategy to increase yield or to maintain yield under stress conditions. Thus, our objective was to evaluate if priming the rice plants with water deficit during the vegetative stage can induce tolerance to heat stress at anthesis and to evaluate the contribution of <i>e</i>[CO<sub>2</sub>]. Methods: The experiment was arranged in a completely randomized design in a factorial arrangement. Factor A consisted of the following treatments: water deficit at four-leaf stage (no-stress, and drought stress), heat at anthesis (normal temperature, high temperature), and priming with water deficit at four-leaf stage and heat stress at anthesis; and Factor B was two [CO<sub>2</sub>] treatments: <i>a</i>[CO<sub>2</sub>] = 400 ± 40 μmol mol<sup>−1</sup> and <i>e</i>[CO<sub>2</sub>] = 700 ± 40 μmol mol<sup>−1</sup>. We assessed the effect of the treatments on plant growth, yield, biochemical, and transcriptome alterations. Results: Although <i>e</i>[CO<sub>2</sub>] affected rice growth parameters, it did not affect the priming effect. Primed plants showed an increase in yield and number of panicles per plant. Primed plants showed upregulation of <i>OsHSP16.9A</i>, <i>OsHSP70.1</i>, and <i>OsHSP70.6</i>. These results showed induced cross-tolerance. Conclusions: Water deficit at the rice vegetative stage reduces the effect of heat stress at the reproductive stage. Water deficit at the vegetative stage can be used, after further testing in field conditions, to reduce the effect of heat stress during flowering in rice.https://www.mdpi.com/2223-7747/12/17/3133<i>Oryza sativa</i> L.climate changesCO<sub>2</sub>primingyieldmolecular markers |
| spellingShingle | Anderson da Rosa Feijó Vívian Ebeling Viana Andrisa Balbinot Marcus Vinicius Fipke Gustavo Maia Souza Luciano do Amarante Luis Antonio de Avila Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice Plants <i>Oryza sativa</i> L. climate changes CO<sub>2</sub> priming yield molecular markers |
| title | Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice |
| title_full | Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice |
| title_fullStr | Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice |
| title_full_unstemmed | Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice |
| title_short | Water Deficit at Vegetative Stage Induces Tolerance to High Temperature during Anthesis in Rice |
| title_sort | water deficit at vegetative stage induces tolerance to high temperature during anthesis in rice |
| topic | <i>Oryza sativa</i> L. climate changes CO<sub>2</sub> priming yield molecular markers |
| url | https://www.mdpi.com/2223-7747/12/17/3133 |
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