Leaf phosphorus fractionation in rice to understand internal phosphorus-use efficiency.

ABSTRACT:

Background and aims

Phosphorus (P) availability is often limiting for rice (Oryza sativa) production. Improving internal P-use efficiency (PUE) is crucial to sustainable food production, particularly in low-input systems. A critical aspect of PUE in plants, and one that remains poorly understood, is the investment of leaf P in different chemical P fractions (nucleic acid-P, lipid-P, inorganic-P, metabolite-P and residual-P). The overarching objective of this study was to understand how these key P fractions influence PUE.

Methods

Three high-PUE and two low-PUE rice genotypes were grown in hydroponics with contrasting P supplies. We measured PUE, total P, P fractions, photosynthesis and biomass.

Key results

Low investment in lipid-P was strongly associated with increas

SUBMITTER: Hayes PE 

PROVIDER: S-EPMC8835646 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature