The auxin-resistant dgt tomato mutant grows less than the wild type but is less sensitive to ammonium toxicity and nitrogen deficiency

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniversidad Publica de Navarra-
Autor(es): dc.contributorUPNA-CSIC-
Autor(es): dc.creatorSantos, Luiz Cláudio Nascimento [UNESP]-
Autor(es): dc.creatorBarreto, Rafael Ferreira [UNESP]-
Autor(es): dc.creatorPrado, Renato Mello [UNESP]-
Autor(es): dc.creatorSilva, Gilmara Pereira [UNESP]-
Autor(es): dc.creatorSantos, Janaína Maria Rodrigues-
Autor(es): dc.creatorLasa, Berta-
Autor(es): dc.creatorAparicio-Tejo, Pedro Maria-
Autor(es): dc.creatorMichelena, Iker Aranjuelo-
Autor(es): dc.creatorCarvalho, Rogério Falleiros [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:31:54Z-
Data de disponibilização: dc.date.available2022-02-22T00:31:54Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-09-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jplph.2020.153243-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/200851-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/200851-
Descrição: dc.descriptionThe low-auxin-sensitivity tomato mutant, dgt, despite displaying reduced plant growth, has been linked to greater resistance to N deficiency. This led us to test the role of auxin resistance of dgt in NH4+ toxicity and N deficiency, compared to wild type tomato (cv. Micro-Tom, MT), grown in hydroponic media. A completely randomized design with three replications in a 2 × 4 factorial scheme was adopted, corresponding to the two tomato genotypes (MT and dgt), involving four nutritional treatments: NO3− (5 mM); NH4+ (5 mM); NO3− (5 mM) plus exogenous auxin (10 μM IAA); and N omission. The results show that NH4+ was toxic to MT but not to dgt. Under N deficiency, MT displayed a lower shoot NO3− content, a lower photosynthetic rate, and a decrease in both shoot and root dry weight. However, in dgt, no difference was observed in shoot NO3− content and photosynthetic rate between plants grown on NO3− or under N deficiency. In addition, dgt showed an increase in shoot dry weight under N deficiency. We highlight the role of auxin resistance in the adaptation of plants to NH4+ toxicity and N deficiency.-
Descrição: dc.descriptionDepartment of Soils and Fertilizers São Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences Jaboticabal Via de Acesso Prof. Paulo Donato Castelane, S/N, Vila Industrial-
Descrição: dc.descriptionDepartment Ciencias del Medio Natural Universidad Publica de Navarra-
Descrição: dc.descriptionInstituto de Agrobiotecnologia UPNA-CSIC-
Descrição: dc.descriptionDepartment of Biology Applied to Agriculture São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Jaboticabal Via de Acesso Prof. Paulo Donato Castelane, S/N-
Descrição: dc.descriptionDepartment of Soils and Fertilizers São Paulo State University (Unesp) School of Agricultural and Veterinarian Sciences Jaboticabal Via de Acesso Prof. Paulo Donato Castelane, S/N, Vila Industrial-
Descrição: dc.descriptionDepartment of Biology Applied to Agriculture São Paulo State University (UNESP) School of Agricultural and Veterinarian Sciences Jaboticabal Via de Acesso Prof. Paulo Donato Castelane, S/N-
Idioma: dc.languageen-
Relação: dc.relationJournal of Plant Physiology-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAmmonium toxicity-
Palavras-chave: dc.subjectIndoleacetic acid-
Palavras-chave: dc.subjectLow nitrogen-
Palavras-chave: dc.subjectNitrogen limitation adaptation-
Título: dc.titleThe auxin-resistant dgt tomato mutant grows less than the wild type but is less sensitive to ammonium toxicity and nitrogen deficiency-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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