The C3-CAM shift is crucial to the maintenance of the photosynthetic apparatus integrity in Pereskia aculeata under prolonged and severe drought

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Autor(es): dc.contributorFederal Rural University of Pernambuco(UFRPE)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorde Barros, João Paulo Alves-
Autor(es): dc.creatorLima Neto, Milton Costa-
Autor(es): dc.creatorda Silva Brito, Nielson Dinivan-
Autor(es): dc.creatorHerminio, Pedro José-
Autor(es): dc.creatorSantos, Hugo Rafael Bentzen-
Autor(es): dc.creatorSimões, Adriano do Nascimento-
Autor(es): dc.creatorNunes, Vitor Gomes-
Autor(es): dc.creatorde Lima, André Luiz Alves-
Autor(es): dc.creatorde Souza, Eduardo Soares-
Autor(es): dc.creatorFerreira-Silva, Sérgio Luiz-
Data de aceite: dc.date.accessioned2025-08-21T18:45:58Z-
Data de disponibilização: dc.date.available2025-08-21T18:45:58Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1007/s11738-024-03738-5-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/298611-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/298611-
Descrição: dc.descriptionThis work aimed to evaluate how the C3-CAM shift could contribute to photoprotection and attenuate losses of CO2 uptake in Pereskia aculeata plants under water stress. Plants were subjected to treatments: well-watered (WW), water deficit (WD), and recovery (Rec) in two experimental conditions (greenhouse and growth chamber). Induction of the C3-CAM shift by drought was assessed by leaf acidification, carbohydrate content, photochemical activity, gas exchange, and stomata density and closure during diurnal and nocturnal periods. Leaf acidity was reduced during the night period in WW-plants and increased in WD-plants, suggesting active accumulation of organic acids associated with CAM induction by drought. This apparent CAM induction in WD-plants was associated to increase carbohydrates and significant reduction of leaf water potential (ΨW). WD-plants showed a positive carbon balance associated with a higher net-CO2 uptake (PN) during night period compared to WW-plants. Moreover, WW-plants presented negative values for PN associated with a negative carbon balance at night. In both conditions (WW and WD) plants showed PN near zero at night. However, a positive carbon balance associated with a slight stomatal aperture at during the day and strong closure during night in the WD-plants, suggests that C3-CAM shift, able to maintain CO2 uptake, presented a better trend toward the CAM-cycling model. Together, this study shows that CO2 uptake conferred by C3-CAM shift under drought contributed to photoprotection and better photosynthetic recovery after rehydration of Pereskia aculeata plants.-
Descrição: dc.descriptionConsejo Nacional para Investigaciones Científicas y Tecnológicas-
Descrição: dc.descriptionPostgraduate Program in Plant Production Serra Talhada Academic Unit Federal Rural University of Pernambuco(UFRPE), CP 063, Pernambuco-
Descrição: dc.descriptionSão Paulo State University Institute of Biosciences, São Vicente-
Descrição: dc.descriptionSão Paulo State University Institute of Biosciences, São Vicente-
Descrição: dc.descriptionConsejo Nacional para Investigaciones Científicas y Tecnológicas: 423583/2018-2-
Idioma: dc.languageen-
Relação: dc.relationActa Physiologiae Plantarum-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAdaptation mechanism-
Palavras-chave: dc.subjectC3-CAM modulation-
Palavras-chave: dc.subjectCAM photosynthesis-
Palavras-chave: dc.subjectPereskia aculeata-
Palavras-chave: dc.subjectWater stress-
Título: dc.titleThe C3-CAM shift is crucial to the maintenance of the photosynthetic apparatus integrity in Pereskia aculeata under prolonged and severe drought-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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