Diverse phosphate and auxin transport loci distinguish phosphate tolerant from sensitive Arabidopsis accessions. 

 -  Plant Physiology, 10.1093/plphys/kiab441, 2021 .
<br/><br/> Phosphorus (P)is an essential element for plant growth often limiting agroecosystems. To identify genetic determinants of performance under variable phosphate (Pi)supply, we conducted genome-wide association studies on five highly predictive Pi starvation response traits in 200 Arabidopsis (Arabidopsis thaliana)accessions. Pi concentration in Pi-limited organs had the strongest, and primary root length had the weakest genetic component. Of 70 trait-associated candidate genes, 17 responded to Pi withdrawal. The PHOSPHATE TRANSPORTER1 gene cluster on chromosome 5 comprises PHT1;1, PHT1;2, and PHT1;3 with known impact on P status. A second locus featured uncharacterized endomembrane-associat.