How does shading mitigates the water deficit in young Hymenaea courbaril L. plants?
Information on tolerance to isolated or combined abiotic stresses is still scarce for tree species, although such stresses are normal in nature. The interactive effect of light availability and water stress has been reported for some native tree species in Brazil but has not been widely investigated...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-09-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1235234/full |
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| author | Lucas C. Reis Silvana P. Q. Scalon Andressa C. Foresti Daiane M. Dresch Cleberton C. Santos Vânia T. Lima |
| author_facet | Lucas C. Reis Silvana P. Q. Scalon Andressa C. Foresti Daiane M. Dresch Cleberton C. Santos Vânia T. Lima |
| author_sort | Lucas C. Reis |
| collection | DOAJ |
| description | Information on tolerance to isolated or combined abiotic stresses is still scarce for tree species, although such stresses are normal in nature. The interactive effect of light availability and water stress has been reported for some native tree species in Brazil but has not been widely investigated. To test the hypothesis that shading can mitigate the stressful effect of water deficit on the photosynthetic and antioxidant metabolism and on the growth of young Hymenaea courbaril L. plants, we evaluated the following two water regimes: a) continuous irrigation – control (I) - 75% field capacity. and b) water deficit (S), characterized by irrigation suspension associated the two following periods of evaluation: P0 - when the photosynthetic rate of plants subjected to irrigation suspension reached values close to zero, with the seedlings being re-irrigated at that moment, and REC - when the photosynthetic rate of the re-irrigated plants of each shading levels reached values similar to those of plants in the control treatment, totaling four treatments: IP0, SP0, IREC, and SREC. The plants of these four treatments were cultivated under the four following shading levels: 0, 30, 50, and 70%, constituting 16 treatments. Intermediate shading of 30 and 50% mitigates the water deficit and accelerates the recovery of H. courbaril. Water deficit associated with cultivation without shading (0%) should not be adopted in the cultivation or transplantation of H. courbaril. After the resumption of irrigation in the REC, the other characteristics presented a recovery under all cultivation conditions. Key message: Intermediate shading of 30 and 50% mitigates the water deficit and accelerates the recovery of H. courbaril. |
| first_indexed | 2024-03-11T23:36:06Z |
| format | Article |
| id | doaj.art-8ffcbd4b29834e4391004a7c8ec417b0 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-03-11T23:36:06Z |
| publishDate | 2023-09-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-8ffcbd4b29834e4391004a7c8ec417b02023-09-19T23:03:23ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-09-011410.3389/fpls.2023.12352341235234How does shading mitigates the water deficit in young Hymenaea courbaril L. plants?Lucas C. Reis0Silvana P. Q. Scalon1Andressa C. Foresti2Daiane M. Dresch3Cleberton C. Santos4Vânia T. Lima5Plant Metabolism and Nutrition Laboratory, Faculty of Agricultural Sciences, Federal University of Grande Dourados, Dourados, State Mato Grosso do Sul, BrazilPlant Metabolism and Nutrition Laboratory, Faculty of Agricultural Sciences, Federal University of Grande Dourados, Dourados, State Mato Grosso do Sul, BrazilPlant Metabolism and Nutrition Laboratory, Faculty of Agricultural Sciences, Federal University of Grande Dourados, Dourados, State Mato Grosso do Sul, BrazilPlant Metabolism and Nutrition Laboratory, Faculty of Agricultural Sciences, Federal University of Grande Dourados, Dourados, State Mato Grosso do Sul, BrazilPlant Metabolism and Nutrition Laboratory, Faculty of Agricultural Sciences, Federal University of Grande Dourados, Dourados, State Mato Grosso do Sul, BrazilDepartament of Botany, Biosciences Institute, São Paulo State University Júlio de Mesquita Filho, Rio Claro, São Paulo, BrazilInformation on tolerance to isolated or combined abiotic stresses is still scarce for tree species, although such stresses are normal in nature. The interactive effect of light availability and water stress has been reported for some native tree species in Brazil but has not been widely investigated. To test the hypothesis that shading can mitigate the stressful effect of water deficit on the photosynthetic and antioxidant metabolism and on the growth of young Hymenaea courbaril L. plants, we evaluated the following two water regimes: a) continuous irrigation – control (I) - 75% field capacity. and b) water deficit (S), characterized by irrigation suspension associated the two following periods of evaluation: P0 - when the photosynthetic rate of plants subjected to irrigation suspension reached values close to zero, with the seedlings being re-irrigated at that moment, and REC - when the photosynthetic rate of the re-irrigated plants of each shading levels reached values similar to those of plants in the control treatment, totaling four treatments: IP0, SP0, IREC, and SREC. The plants of these four treatments were cultivated under the four following shading levels: 0, 30, 50, and 70%, constituting 16 treatments. Intermediate shading of 30 and 50% mitigates the water deficit and accelerates the recovery of H. courbaril. Water deficit associated with cultivation without shading (0%) should not be adopted in the cultivation or transplantation of H. courbaril. After the resumption of irrigation in the REC, the other characteristics presented a recovery under all cultivation conditions. Key message: Intermediate shading of 30 and 50% mitigates the water deficit and accelerates the recovery of H. courbaril.https://www.frontiersin.org/articles/10.3389/fpls.2023.1235234/fullphotosynthesischlorophyll a fluorescenceantioxidant enzymesprolinestresses abiotic |
| spellingShingle | Lucas C. Reis Silvana P. Q. Scalon Andressa C. Foresti Daiane M. Dresch Cleberton C. Santos Vânia T. Lima How does shading mitigates the water deficit in young Hymenaea courbaril L. plants? Frontiers in Plant Science photosynthesis chlorophyll a fluorescence antioxidant enzymes proline stresses abiotic |
| title | How does shading mitigates the water deficit in young Hymenaea courbaril L. plants? |
| title_full | How does shading mitigates the water deficit in young Hymenaea courbaril L. plants? |
| title_fullStr | How does shading mitigates the water deficit in young Hymenaea courbaril L. plants? |
| title_full_unstemmed | How does shading mitigates the water deficit in young Hymenaea courbaril L. plants? |
| title_short | How does shading mitigates the water deficit in young Hymenaea courbaril L. plants? |
| title_sort | how does shading mitigates the water deficit in young hymenaea courbaril l plants |
| topic | photosynthesis chlorophyll a fluorescence antioxidant enzymes proline stresses abiotic |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1235234/full |
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