Role of Phosphorus in Photosynthetic Carbon Assimilation and Partitioning

Authored by: Mohammad Pessarakli

Handbook of Photosynthesis

Print publication date:  March  2016
Online publication date:  April  2016

Print ISBN: 9781482230734
eBook ISBN: 9781482230758
Adobe ISBN:

10.1201/b19498-45

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Abstract

Phosphorus (P) is one of the essential mineral nutrients for plants and is required in many compounds in cells and organelles [ 1 ]. These compounds are associated with numerous components of metabolism (sugar phosphates, nucleic acids, nucleotides, coenzymes, phospholipids) and are closely associated with energy transfer (triphosphonucleotides) and genetic material (nucleic acids). The covalent ester bond between two P atoms is at a higher energy level than the covalent bonds between many other kinds of atoms. That is, it takes more energy for these compounds to be synthesized, and conversely, they release more energy when either they are hydrolyzed or they participate in alternative reactions such as P addition to other molecules. Plants must have P for plant growth and development. Limited inorganic phosphate (Pi) supply results in numerous perturbations in plant growth and development and strongly affects plant yields [ 2 ].

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