GWAS unravels acid phosphatase ACP2 as a photosynthesis regulator under phosphate starvation conditions through modulating serine metabolism in rice.

ABSTRACT: Inorganic phosphorus (Pi) deficiency significantly impacts plant growth, development, and photosynthetic efficiency. This study evaluated 206 rice accessions from a MiniCore population under both Pi-sufficient (Pi⁺) and Pi-starvation (Pi^-) conditions in the field to assess photosynthetic phosphorus use efficiency (PPUE), defined as the ratio of A_sat^Pi- to A_sat^Pi+. A genome-wide association study and differential gene expression analyses identified an acid phosphatase gene (ACP2) that responds strongly to phosphate availability. Overexpression and knockout of ACP2 led to a 67% increase and 32% decrease in PPUE, respectively, compared with wild type. Introduction of an elite allele A, by substituting the v5 SNP G with A, resul

SUBMITTER: Liu S 

PROVIDER: S-EPMC11287135 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature