Add to ORKGDrimys granadensis (Winteraceae) was chosen for study because of its primitive evolutionary position among angiosperms. Mature sieve elements of the primary phloem of petioles are enucleate and have what we interpret as crystalline P-protein in addition to the more common tubular and fibrillar forms. Companion cells associated with sieve elements retain normal-appearing nuclei and possess bodies of flocculent material within the cytoplasm. The pores connecting mature adjacent sieve elements are of much smaller diameter than those typically encountered in angiosperms. The possession of P-protein and companion cells in Drimys argues for the early evolution of these traits in angiosperm phloem
Symplasmicly connected cells called sieve elements form a network of tubes in the phloem of vascular...
International audiencePhloem is the principal food-conducting tissue, involved in the active transpo...
Plant vasculature consists of two major conductive cell types, xylem tracheary elements and phloem s...
Drimys granadensis (Winteraceae) was chosen for study because of its primitive evolutionary position...
A survey of the phloem-protein (P-protein) in species of primitive angiosperms was undertaken to p...
This thesis presents the results of an investigation into the phloem of higher plants. The function...
This is the published version.Secondary phloem anatomy is detailed for four species of Medullosa fro...
Sieve pores of the sieve plates connect neighboring sieve elements to form the conducting sieve tube...
Phloem, as a major tissue mediating long-distance communication, has been an object of extensive res...
Phloem, as a major tissue mediating long-distance communication, has been an object of extensive res...
A defining feature of higher plants such as Arabidopsis thaliana is the sophisticated vascular trans...
Sieve pores of the sieve plates connect neighboring sieve elements to form the conducting sieve tube...
Evolution of the vascular tissues allowed plants to efficiently settle land, occupy new ecological n...
The ontogenetic development of the secondary sieve elements in ash, Fraxinus excelsior is traced by ...
Differentiating sieve elements in the phloem of angiosperms produce abundant phloem-specific protein...
Symplasmicly connected cells called sieve elements form a network of tubes in the phloem of vascular...
International audiencePhloem is the principal food-conducting tissue, involved in the active transpo...
Plant vasculature consists of two major conductive cell types, xylem tracheary elements and phloem s...
Drimys granadensis (Winteraceae) was chosen for study because of its primitive evolutionary position...
A survey of the phloem-protein (P-protein) in species of primitive angiosperms was undertaken to p...
This thesis presents the results of an investigation into the phloem of higher plants. The function...
This is the published version.Secondary phloem anatomy is detailed for four species of Medullosa fro...
Sieve pores of the sieve plates connect neighboring sieve elements to form the conducting sieve tube...
Phloem, as a major tissue mediating long-distance communication, has been an object of extensive res...
Phloem, as a major tissue mediating long-distance communication, has been an object of extensive res...
A defining feature of higher plants such as Arabidopsis thaliana is the sophisticated vascular trans...
Sieve pores of the sieve plates connect neighboring sieve elements to form the conducting sieve tube...
Evolution of the vascular tissues allowed plants to efficiently settle land, occupy new ecological n...
The ontogenetic development of the secondary sieve elements in ash, Fraxinus excelsior is traced by ...
Differentiating sieve elements in the phloem of angiosperms produce abundant phloem-specific protein...
Symplasmicly connected cells called sieve elements form a network of tubes in the phloem of vascular...
International audiencePhloem is the principal food-conducting tissue, involved in the active transpo...
Plant vasculature consists of two major conductive cell types, xylem tracheary elements and phloem s...