Abstract
Phosphorus (P) is easily fixed in soils, forming unavailable forms, such as insoluble P and organic P. Plants frequently face P deficiency because of its low mobility in soil. Many strategies to adapt to P-deficient conditions have been developed in plants, but they can be categorized as two major strategies: (1) efficient use of sparingly available P by increase root exudation, including organic acids and phosphatases, by increase expression of phosphate transporter, and by modification of root architecture; and (2) improvement of internal P use efficiency by alteration of carbon metabolisms and by lipid remodeling. The strategies are regulated by a complex signaling network. This chapter presents an overview of the strategies and past trials to improve P use efficiency by transformation of certain genes involved in low-P stress response including future perspectives.
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