Enhanced phosphorus uptake in transgenic tobacco plants that overproduce citrate.
Nat Biotechnol
; 18(4): 450-3, 2000 Apr.
Article
em En
| MEDLINE
| ID: mdl-10748530
Phosphorus (P) is one of the most important nutrients limiting agricultural production worldwide. In acid and alkaline soils, which make up over 70% of the world's arable land, P forms insoluble compounds that are not available for plant use. To reduce P deficiencies and ensure plant productivity, nearly 30 million tons of P fertilizer are applied every year. Up to 80% of the applied P fertilizer is lost because it becomes immobile and unavailable for plant uptake. Therefore, the development of novel plant varieties more efficient in the use of P represents the best alternative to reduce the use of P fertilizers and achieve a more sustainable agriculture. We show here that the ability to use insoluble P compounds can be significantly enhanced by engineering plants to produce more organic acids. Our results show that when compared to the controls, citrate-overproducing plants yield more leaf and fruit biomass when grown under P-limiting conditions and require less P fertilizer to achieve optimal growth.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fosfatos
/
Fósforo
/
Plantas Tóxicas
/
Nicotiana
/
Citrato (si)-Sintase
/
Citratos
/
Plantas Geneticamente Modificadas
Idioma:
En
Revista:
Nat Biotechnol
Assunto da revista:
BIOTECNOLOGIA
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Estados Unidos