This is a preview. Log in through your library . Abstract Phloem loading in source leaves is a key step for carbon partitioning and passive symplastic loading has been proposed for several tree ...

Sucrose is taken up and accumulated by cotyledons of Ricinus communis L. Autoradiographic studies reveal a predominant accumulation of sucrose in the phloem of the cotyledons. The export of sucrose ...

Plant researchers have investigated the transport of compounds in maize. They focused on the mechanism used to transport the products of photosynthesis for further distribution in the plant through ...