A phosphate starvation response regulator Ta-PHR1 is involved in phosphate signalling and increases grain yield in wheat.

ABSTRACT:

Background and aims

Phosphorus deficiency is a major limiting factor for crop yield worldwide. Previous studies revealed that PHR1 and it homologues play a key role in regulating the phosphate starvation response in plants. However, the function of PHR homologues in common wheat (Triticum aestivum) is still not fully understood. The aim of the study was to characterize the function of PHR1 genes in regulating phosphate signalling and plant growth in wheat.

Methods

Wheat transgenic lines over-expressing a wheat PHR1 gene were generated and evaluated under phosphorus-deficient and -sufficient conditions in hydroponic culture, a soil pot trial and two field experiments.

Key results

Three PHR1 homologous genes Ta-PHR1-A1, B1 and D1 were isolated from wheat, and the functi

SUBMITTER: Wang J 

PROVIDER: S-EPMC3662521 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature