Buffered delivery of phosphate to Arabidopsis alters responses to low phosphate.

ABSTRACT: Arabidopsis has been reported to respond to phosphate (Pi) stress by arresting primary root growth and increasing lateral root branching. We developed a system to buffer Pi availability to Arabidopsis in gel media systems by charging activated aluminum oxide particles with low and sufficient concentrations of Pi, based on previous work in horticultural and sand culture systems. This system more closely mimics soil chemistry and results in different growth and transcriptional responses to Pi stress compared with plants grown in standard gel media. Low Pi availability in buffered medium results in reduced root branching and preferential investment of resources in axial root growth. Root hair length and density, known responses to Pi stress, increase in low-buffered Pi medium. Plants grown un

SUBMITTER: Hanlon MT 

PROVIDER: S-EPMC6019003 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature