We have investigated the consequences of endogenous limitations in oxygen delivery for phloem transport in Ricinus communis. In situ oxygen profiles were measured directly across stems of plants ...

Seasonal collections of stems of various ages were made of Celastrus scandens L., Parthenocissus inserta (Kerner) Fritsch, and Vitis riparia Michx. In C. scandens, cambial activity, phloem ...

In vascular plants, long-distance transport of photoassimilates is driven by a pressure gradient within the phloem. It is a highly specialised tissue consisting of a network of living, tube-shaped ...

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 ...

Plasmodesmata are plant-unique intercellular communication channels that acquired the capacity to dilate significantly to allow the trafficking of proteins and RNA within a symplasmic domain. This ...

There are many different types of cells in animals. Each type is specialised for a particular role. These ensure that the organism functions as a whole. The head of the sperm contains the genetic ...