Vascular plants rely on differences in osmotic pressure to export sugars from regions of synthesis (mature leaves) to sugar sinks (roots, fruits). In this process, known as Münch pressure flow, the ...

Phloem diseases, including the economically devastating citrus greening, are particularly difficult to study because phloem cells -- essential for plant nutrient transport -- are difficult to access ...

Researchers monitored the progression of phloem production over time in field-grown HLB-affected citrus trees to determine how the trees are capable of sustaining new growth. Results showed that new ...

American Journal of Botany, Vol. 5, No. 7 (Jul., 1918), pp. 347-378 (38 pages) The more important results of this study may be briefly stated as follows: 1. In the woody dicotyledons, there is no ...

One goes up... and one goes down. I was a college freshman in Botany 101 when I first learned about xylem and phloem, the two transport tissues which carry water and nutrients up and down a tree's ...

It may contain inaccuracies due to the limitations of machine translation. From left: Professor Il-doo Hwang of POSTECH's Department of Life Sciences, Dr. So-young Park, and Dr. Hyun-seob Cho.