Intergrative metabolomic and transcriptomic analyses unveil nutrient remobilization events in leaf senescence of tobacco.

ABSTRACT: Leaf senescence in plants is a coordinated process that involves remobilization of nutrients from senescing leaves to sink tissues. The molecular events associated with nutrient remobilization are however not well understood. In this study the tobacco system with a source-sink relationship between different leaf positions was used in analyzing the spatiotemporal changes of 76 metabolites from leaves at 3 different stalk positions and 8 developmental stages. The metabolomic data was then compared with RNA-seq data from the same samples to analyze the activities of the metabolic pathways that are important for nutrient remobilization. Integrative analyses on metabolites accumulation and expression changes of enzyme-encoding genes in corresponding metabolic pathways indicated a significant up

SUBMITTER: Li W 

PROVIDER: S-EPMC5608745 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature