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 ...

Experimental protocols used to study the route(s) of phloem loading in source leaves are evaluated; they include the analysis of plasmodesmatal ultrastructure and distribution, mobile compounds in the ...

Sugar transporters are integral to the distribution of carbohydrates, which serve not only as energy sources but also as critical regulators of plant growth and organ development. These proteins ...