Sink strength of citrus rootstocks under water deficit

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorAgronomic Institute (IAC)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorSilva, Simone F.-
Autor(es): dc.creatorMiranda, Marcela T.-
Autor(es): dc.creatorCosta, Vladimir E.-
Autor(es): dc.creatorMachado, Eduardo C.-
Autor(es): dc.creatorRibeiro, Rafael V.-
Data de aceite: dc.date.accessioned2025-08-21T22:04:10Z-
Data de disponibilização: dc.date.available2025-08-21T22:04:10Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2021-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1093/treephys/tpab008-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/222568-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/222568-
Descrição: dc.descriptionCarbon allocation between source and sink organs determines plant growth and is influenced by environmental conditions. Under water deficit (WD), plant growth is inhibited before photosynthesis and shoot growth tends to be more sensitive than root growth. However, the modulation of the source–sink relationship by rootstocks remains unsolved in citrus trees under WD. Citrus plants grafted on Rangpur lime are drought tolerant, which may be related to a fine coordination of the source–sink relationship for maintaining root growth. Here, we followed 13C allocation and evaluated physiological responses and growth of Valencia orange trees grafted on three citrus rootstocks (Rangpur lime, Swingle citrumelo and Sunki mandarin) under WD. As compared with plants on Swingle and Sunki rootstocks, ones grafted on Rangpur lime showed higher stomatal sensitivity to the initial variation of water availability and less accumulation of nonstructural carbohydrates in roots under WD. High 13C allocation found in Rangpur lime roots indicates this rootstock has high sink demand associated with high root growth under WD. Our data suggest that Rangpur lime rootstock used photoassimilates as sources of energy and carbon skeletons for growing under drought, which is likely related to increases in root respiration. Taken together, our data revealed that carbon supply by leaves and delivery to roots are critical for maintaining root growth and improving drought tolerance, with citrus rootstocks showing differential sink strength under WD.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionLaboratory of Crop Physiology Department of Plant Biology Institute of Biology University of Campinas (UNICAMP), PO Box 6109-
Descrição: dc.descriptionLaboratory of Plant Physiology “Coaracy M. Franco” Center R&D in Ecophysiology and Biophysics Agronomic Institute (IAC), PO Box 28-
Descrição: dc.descriptionStable Isotopes Center (CIE) São Paulo State University (UNESP)-
Descrição: dc.descriptionStable Isotopes Center (CIE) São Paulo State University (UNESP)-
Descrição: dc.descriptionFAPESP: #2015/14817-4-
Descrição: dc.descriptionFAPESP: #2016/02199-7-
Descrição: dc.descriptionFAPESP: #2016/11906-9-
Descrição: dc.descriptionFAPESP: #2018/09834-5-
Descrição: dc.descriptionCNPq: #302460/2018-7-
Descrição: dc.descriptionCNPq: #311345/2019-0-
Descrição: dc.descriptionCNPq: #401104/2016-8-
Formato: dc.format1372-1383-
Idioma: dc.languageen-
Relação: dc.relationTree Physiology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subject13C accumulation-
Palavras-chave: dc.subjectAbiotic stress-
Palavras-chave: dc.subjectDrought-
Palavras-chave: dc.subjectPartitioning-
Palavras-chave: dc.subjectPulse-labeling trees-
Título: dc.titleSink strength of citrus rootstocks under water deficit-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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