Data/hora: 03/06/2024 14:57:50

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 01/02/2017
Data da última atualização: | 23/11/2017
Autoria: | MARTINS, C. P. S.; NEVES, D. M.; CIDADE, A. C.; MENDES, A. F. S.; SILVA, D. C.; ALMEIDA, ALEX-ALAN F.; COELHO FILHO, M. A.; GESTEIRA, A. da S.; SOARES FILHO, W. dos S.; COSTA, M. G. C.
Afiliação: | CRISTINA P. S. MARTINS, UESC; DIANA M. NEVES, UESC; LUCIANA C. CIDADE, UESC; AMANDA F. S. MENDES, IF Baiano; DELMIRA C. SILVA, UESC; ALEX-ALAN F. ALMEIDA, UESC; MAURICIO ANTONIO COELHO FILHO, CNPMF; ABELMON DA SILVA GESTEIRA, CNPMF; WALTER DOS SANTOS SOARES FILHO, CNPMF; MARCIO G. C. COSTA, UESC.
Título: | Expression of the citrus CsTIP2;1 gene improves tobacco plant growth, antioxidant capacity and physiological adaptation under stress conditions.
Ano de publicação: | 2017
Fonte/Imprenta: | Planta, January, 2017.
ISSN: | 0032-0935
DOI: | 10.1007/s00425-017-2653-4
Idioma: | Inglês
Conteúdo: | Tonoplast intrinsic proteins (TIPs) are a subfamily of aquaporins, belonging to the major intrinsic protein family. In a previous study, we have shown that a citrus TIP isoform, CsTIP2;1, is highly expressed in leaves and also transcriptionally regulated in leaves and roots by salt and drought stresses and infection by ?Candidatus Liberibacter asiaticus?, the causal agent of the Huanglongbing disease, suggesting its involvement in the regulation of the flow of water and nutrients required during both normal growth and stress conditions. Here, we show that the overexpression of CsTIP2;1 in transgenic tobacco increases plant growth under optimal and water- and salt-stress conditions and also significantly improves the leaf water and oxidative status, photosynthetic capacity, transpiration rate and water use efficiency of plants subjected to a progressive soil drying. These results correlated with the enhanced mesophyll cell expansion, midrib aquiferous parenchyma abundance, H2O2 detoxification and stomatal conductance observed in the transgenic plants. Taken together, our results indicate that CsTIP2;1 plays an active role in regulating the water and oxidative status required for plant growth and adaptation to stressful environmental conditions and may be potentially useful for engineering stress tolerance in citrus and other crop plants.
Thesagro: | Fruta cítrica.
Thesaurus Nal: | Citrus.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (31834-1) - UPC - AP - DD - Publicação digital -  -  - DIS