The rice ALS3 encoding a novel pentatricopeptide repeat protein is required for chloroplast development and seedling growth.

ABSTRACT:

Background

Pentatricopeptide repeat (PPR) proteins play essential roles in modulating the expression of organelle genes and have expanded greatly in higher plants. However, molecular mechanisms of most rice PPR genes remain unclear.

Results

In this study, a new rice PPR mutant, asl3 (albino seedling lethality3) exhibits an albino lethal phenotype at the seedling stage. This albino phenotype was associated with altered photosynthetic-pigment and chloroplast development. Map-based cloning showed that ASL3 encodes a novel rice PPR protein with 10 tandem PPR motifs, which localizes to the chloroplast. ASL3 showed tissue-specific expression, as it was highly expressed in the chlorenchyma, but expressed at much lower levels in roots and panicles. RNAi of ASL3 confirmed that ASL3 p

SUBMITTER: Lin D 

PROVIDER: S-EPMC4390607 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature