Ultrastructural studies of differentiating phloem of the midvein in 15 species of Echium (Boraginaceae) have shown that in every species one or more crystalloids develop in sieve-element nuclei. These inclusions appear as soon as the cell begins to differentiate from a procambial derivative. Small at first, they enlarge later, particularly in length. The crystalloid may extend end-to-end in the correspondingly elongated nucleus. When the nucleus disin-tegrates in the maturing cell the crystalloid is released into the cell lumen where it remains intact or becomes fractured into large pieces. No dissociation into subunits was observed. The crystalloids are composed of tightly packed narrow rods (tubules) forming a two-dimensional lattice of s...
Correlated studies have been made on the sieve tube contents of Heracleum, and in some cases Tetrago...
Bibliography : pages 55-57.The development of protein bodies in seed cotyledons of Japanese morning ...
In the stroma of leaves proplastids of all investigated species of orchids: Paphiopedilum, Stanhopea...
Nuclear crystalloids have been found in sieve elements of several Boraginaceae. Nuclei of dif-ferent...
The presence of usually single, elongated, compound crystalloids in nuclei of sieve elements is an o...
Drimys granadensis (Winteraceae) was chosen for study because of its primitive evolutionary position...
In the cytoplasm of chlorenchyma cells in primary Origanum dictamnus leaves, rectangular prism-like ...
The ontogenetic development of the secondary sieve elements in ash, Fraxinus excelsior is traced by ...
The ultrastructural features and the plastid changes caused by sample preparation were studied in si...
Crystalline cell inclusions were observed in 45 species of Cladophorophyceae. The crystals can be cl...
Differentiating sieve elements in the phloem of angiosperms produce abundant phloem-specific protein...
Crystalline cell inclusions were observed in 45 species of Cladophorophyceae. The crystals can be cl...
Crystalline cell inclusions were observed in 45 species of Cladophorophyceae. The crystals can be cl...
An ultrastructural study of nucleomorphs in species of Cryptophyceae revealed aspects of division no...
The interphase nucleolus in Allium porrum, as in many of the plant species studied so far, is highly...
Correlated studies have been made on the sieve tube contents of Heracleum, and in some cases Tetrago...
Bibliography : pages 55-57.The development of protein bodies in seed cotyledons of Japanese morning ...
In the stroma of leaves proplastids of all investigated species of orchids: Paphiopedilum, Stanhopea...
Nuclear crystalloids have been found in sieve elements of several Boraginaceae. Nuclei of dif-ferent...
The presence of usually single, elongated, compound crystalloids in nuclei of sieve elements is an o...
Drimys granadensis (Winteraceae) was chosen for study because of its primitive evolutionary position...
In the cytoplasm of chlorenchyma cells in primary Origanum dictamnus leaves, rectangular prism-like ...
The ontogenetic development of the secondary sieve elements in ash, Fraxinus excelsior is traced by ...
The ultrastructural features and the plastid changes caused by sample preparation were studied in si...
Crystalline cell inclusions were observed in 45 species of Cladophorophyceae. The crystals can be cl...
Differentiating sieve elements in the phloem of angiosperms produce abundant phloem-specific protein...
Crystalline cell inclusions were observed in 45 species of Cladophorophyceae. The crystals can be cl...
Crystalline cell inclusions were observed in 45 species of Cladophorophyceae. The crystals can be cl...
An ultrastructural study of nucleomorphs in species of Cryptophyceae revealed aspects of division no...
The interphase nucleolus in Allium porrum, as in many of the plant species studied so far, is highly...
Correlated studies have been made on the sieve tube contents of Heracleum, and in some cases Tetrago...
Bibliography : pages 55-57.The development of protein bodies in seed cotyledons of Japanese morning ...
In the stroma of leaves proplastids of all investigated species of orchids: Paphiopedilum, Stanhopea...