Development of strategies for genetic manipulation and fine-tuning of a chloroplast retrograde signal 3'-phosphoadenosine 5'-phosphate.

ABSTRACT: Homeostasis of metabolism and regulation of stress-signaling pathways are important for plant growth. The metabolite 3'-phosphoadenosine-5'-phosphate (PAP) plays dual roles as a chloroplast retrograde signal during drought and high light stress, as well as a toxic by-product of secondary sulfur metabolism, and thus, its levels are regulated by the chloroplastic phosphatase, SAL1. Constitutive PAP accumulation in sal1 mutants improves drought tolerance but can impair growth and alter rosette morphology. Therefore, it is of interest to derive strategies to enable controlled and targeted PAP manipulation that could enhance drought tolerance while minimizing the negative effects on plant growth. We systematically tested the potential and efficiency of multiple established transgenic manipulati

SUBMITTER: Phua SY 

PROVIDER: S-EPMC6508504 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature