Cell Wall Invertase 3 Affects Cassava Productivity via Regulating Sugar Allocation From Source to Sink.

ABSTRACT: Storage roots are the main sink for photo-assimilate accumulation and reflect cassava yield and productivity. Regulation of sugar partitioning from leaves to storage roots has not been elucidated. Cell wall invertases are involved in the hydrolysis of sugar during phloem unloading of vascular plants to control plant development and sink strength but have rarely been studied in root crops like cassava. MeCWINV3 encodes a typical cell wall invertase in cassava and is mainly expressed in vascular bundles. The gene is highly expressed in leaves, especially mature leaves, in response to diurnal rhythm. When MeCWINV3 was overexpressed in cassava, sugar export from leaves to storage roots was largely inhibited and sucrose hydrolysis in leaves was accelerated, leading to increased tr

SUBMITTER: Yan W 

PROVIDER: S-EPMC6503109 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature