ABSTRACT
Phosphorus (P) is one of the most important macro-elements which is essential for growth and development of plant. Plants have evolved complex responsive and adaptive mechanisms for acquisition, remobilization, and recycling of phosphate (Pi) to maintain P homeostasis. Phosphate starvation responsive (PSR) genes are involved in acquisition, mobilization, and substitution of Pi, metabolic pathways, signal transduction, transcriptional regulation, and many processes related to growth and development. This chapter has integrated the phenomics, genomics, proteomics, breeding informatics, micromics, metabolomics, and transcriptomics of maize under low-phosphorus stress (LP), and also the opportunities for further understanding of regulation of maize in LP stress as summarized. Thus the integration of systems biology with high-throughput, high-dimensional, and precision phenotyping will contribute to the development of maize varieties for LP tolerance.
