Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa
Climate change affects the physiology of cocoa; however, research under high temperature and elevated [CO2] is scant. It is important to consider the physiological response of cocoa to the interaction of these environmental variables and thus generate an accurate prediction of how this crop will res...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Plant Stress |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667064X22000598 |
| _version_ | 1811190398625775616 |
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| author | Fabiola M. Ríos-Bolívar René Garruña Benigno Rivera-Hernández Ana Herrera Wilmer Tezara |
| author_facet | Fabiola M. Ríos-Bolívar René Garruña Benigno Rivera-Hernández Ana Herrera Wilmer Tezara |
| author_sort | Fabiola M. Ríos-Bolívar |
| collection | DOAJ |
| description | Climate change affects the physiology of cocoa; however, research under high temperature and elevated [CO2] is scant. It is important to consider the physiological response of cocoa to the interaction of these environmental variables and thus generate an accurate prediction of how this crop will respond to climate change. In order to know whether elevated [CO2] leads to an increase in photosynthetic rate (A) and water use efficiency (WUE), thereby decreasing the negative impact of elevated temperature on physiology of cocoa (Theobroma cacao L), gas exchange, diurnal carbon:water balance (DCWB), photochemical activity of PSII, response curves of A to intercellular [CO2] (A/Ci curves) and growth were determined in two high temperature (T) sensitive cocoa clones (INIFAP-8 and Neocriollo) cultivated in controlled growth chambers for 100 days. The chamber environmental conditions were low [CO2]- low T (LCLT; 400 µmol CO2 mol−1 and 30 °C); high [CO2]- high T (HCHT; 1200 µmol CO2 mol−1 and 40 °C); high [CO2]- low T (HCLT; 1200 µmol CO2 mol−1 and 30 °C) and low [CO2]- high T (LCHT; 400 µmol CO2 mol−1 and 40 °C). A significant increase in A, WUE, DCWB and growth was found in both clones grown at high [CO2]. However, high T (40 °C) considerably decreased the physiology of both clones but its impact was significantly mitigated by elevated [CO2]. The results show that the physiological effects generated by elevated [CO2] could reduce the negative impact of increased temperatures, increasing the tolerance range of cocoa in the future. |
| first_indexed | 2024-04-11T14:50:45Z |
| format | Article |
| id | doaj.art-7df95c0d2ab245a5a8b025fa9a91171f |
| institution | Directory Open Access Journal |
| issn | 2667-064X |
| language | English |
| last_indexed | 2024-04-11T14:50:45Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Plant Stress |
| spelling | doaj.art-7df95c0d2ab245a5a8b025fa9a91171f2022-12-22T04:17:30ZengElsevierPlant Stress2667-064X2022-12-016100114Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoaFabiola M. Ríos-Bolívar0René Garruña1Benigno Rivera-Hernández2Ana Herrera3Wilmer Tezara4Instituto Tecnológico Nacional de México /Instituto Tecnológico de Conkal. Av. Tecnológico s/n, CP. 97345, Conkal, Yucatán, Mexico; Centro de Botánica Tropical, Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela, 47114 Caracas 1041 A, VenezuelaCONACYT, Instituto Tecnológico de Conkal, Av. Tecnológico s/n, CP. 97345, Conkal, Yucatán, MexicoInstituto Tecnológico Nacional de México /Instituto Tecnológico de Conkal. Av. Tecnológico s/n, CP. 97345, Conkal, Yucatán, MexicoCentro de Botánica Tropical, Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela, 47114 Caracas 1041 A, VenezuelaCentro de Botánica Tropical, Instituto de Biología Experimental, Facultad de Ciencias, Universidad Central de Venezuela, 47114 Caracas 1041 A, Venezuela; Facultad de Ciencias Agropecuarias, Universidad Técnica Luis Vargas Torres, Estación Experimental Mutile, Esmeraldas, Ecuador; Corresponding author.Climate change affects the physiology of cocoa; however, research under high temperature and elevated [CO2] is scant. It is important to consider the physiological response of cocoa to the interaction of these environmental variables and thus generate an accurate prediction of how this crop will respond to climate change. In order to know whether elevated [CO2] leads to an increase in photosynthetic rate (A) and water use efficiency (WUE), thereby decreasing the negative impact of elevated temperature on physiology of cocoa (Theobroma cacao L), gas exchange, diurnal carbon:water balance (DCWB), photochemical activity of PSII, response curves of A to intercellular [CO2] (A/Ci curves) and growth were determined in two high temperature (T) sensitive cocoa clones (INIFAP-8 and Neocriollo) cultivated in controlled growth chambers for 100 days. The chamber environmental conditions were low [CO2]- low T (LCLT; 400 µmol CO2 mol−1 and 30 °C); high [CO2]- high T (HCHT; 1200 µmol CO2 mol−1 and 40 °C); high [CO2]- low T (HCLT; 1200 µmol CO2 mol−1 and 30 °C) and low [CO2]- high T (LCHT; 400 µmol CO2 mol−1 and 40 °C). A significant increase in A, WUE, DCWB and growth was found in both clones grown at high [CO2]. However, high T (40 °C) considerably decreased the physiology of both clones but its impact was significantly mitigated by elevated [CO2]. The results show that the physiological effects generated by elevated [CO2] could reduce the negative impact of increased temperatures, increasing the tolerance range of cocoa in the future.http://www.sciencedirect.com/science/article/pii/S2667064X22000598CO2High temperaturePhotosynthesisTheobroma cacaoWater use efficiency |
| spellingShingle | Fabiola M. Ríos-Bolívar René Garruña Benigno Rivera-Hernández Ana Herrera Wilmer Tezara Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa Plant Stress CO2 High temperature Photosynthesis Theobroma cacao Water use efficiency |
| title | Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa |
| title_full | Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa |
| title_fullStr | Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa |
| title_full_unstemmed | Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa |
| title_short | Effect of high concentrations of CO2 and high temperatures on the physiology of Mexican cocoa |
| title_sort | effect of high concentrations of co2 and high temperatures on the physiology of mexican cocoa |
| topic | CO2 High temperature Photosynthesis Theobroma cacao Water use efficiency |
| url | http://www.sciencedirect.com/science/article/pii/S2667064X22000598 |
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