Careful cutting of the hypocotyl of Ricinus communis L. seedlings led to the exudation of pure sieve-tube sap for 2—3 h. This offered the possibility of testing the phloem-loading system qualitatively ...
Researchers have combined traditional genetic approaches with 3-D reconstructions from scanning electron microscopy to discover and characterize genes regulating the development of plant sieve ...
The ultrastructural ontogeny of Commelina benghalensis minor-vein elements was followed. The mature minor vein has a restricted number of elements: a sheath of six to eight mestome cells encloses one ...
RECENTLY reports have been published of microscopic particles moving along strands in the sieve tubes of cut sections of Primula obconica 1,2. This movement has suggested that protoplasmic streaming ...
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 ...
Crops worldwide are increasingly vulnerable to pandemics, as diseases hitch rides on global flows of people and goods, hopping from continent to continent. Phloem diseases such as citrus greening are ...
image: Citrus leaf parenchyma protoplast viewed under different light sources and filters after incubation in Hoechst 3342, Neutral Red, and MitoTracker Green. Each cell was viewed under brightfield ...
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