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Enhanced phosphorus uptake in transgenic tobacco plants that overproduce citrate.

Abstract：

: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.

journal_name

Nat Biotechnol

journal_title

Nature biotechnology

authors

López-Bucio J,de La Vega OM,Guevara-García A,Herrera-Estrella L

doi

10.1038/74531

subject

Has Abstract

pub_date

2000-04-01 00:00:00

pages

450-3

issue

4

eissn

1087-0156

issn

1546-1696

journal_volume

18

pub_type

杂志文章

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