Yu. V. Gamalei

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This review, dedicated to the 100th anniversary of A.L. Kursanov's date of birth, considers the development of phloem transport studies since his book, Assimilate Transport in the Plant, was published in 1976. This book and several other fundamental publications on phloem structure and functions basically shaped this physiological issue; as a result,(More)
The evidence of light, electronic, and confocal microscopy collected within the 30-year period is reviewed to revise the concept of assimilate loading in phloem. It is the starting point located in mesophyll cells, which determines the route of assimilate export from mesophyll to phloem, rather than its final segment located in the terminal phloem.(More)
We performed electron-microscopic examination of structural diurnal changes in the lumen of sieve tubes and the vacuolar system of corresponding companion cells and changes induced by the experimental blockage of assimilate export from the leaf by its cold-girdling. For these investigations, Cucurbita pepo L. and Helianthus annuus L. plants were used, that(More)
Solutions of sucrose, glucose, raffinose, and stachyose were fed via the petiole to detached leaves of plant species known to transfer sugars during photosynthesis into the phloem using either the apoplastic or the symplastic pathway of phloem loading. Symplastic phloem loaders, which translocate raffinose-type oligosaccharides and sucrose in the phloem,(More)
364 Structural and functional evolution of the terminal phloem of dicotyledonous plants became a subject of active investigation after detection and description of several types of its terminal complexes differing in the structure of the sieve-tube companion cells: intermediary cells [1, 2], transfer cells [3, 4], and ordinary cells [5, 6]. In these first(More)
Phylogenetic and ontogenetic relationships between the plastids, cell endoplasmic reticulum, and plant transport communication have been reviewed. The initiating role of plastids (endosymbionts) in the origin of endoplasmic reticulum (buffer zone of endosymbiogenesis) has been shown, as well as a similar role of endoplasmic reticulum in the development of(More)
176 The structure of annual rings of plants reflects fluctuations of weather. In the long-term record of xylem transport reconstructed on the basis of the diameters of xylem cells in the rings, peaks reflect periods of the highest water line in bodies of water, the largest river water flow, and the maximum soil saturation with water [1]. The plant structure(More)
Plastid stromules and cell-wall plasmodesmata are special plant-cell stsructures. They were discovered a century and a half apart: stromules at the beginning of the 21st century and plasmodesmata the end of the 19th. The former and latter are intra- and intercellular fragments, respectively, of endoplasmic reticulum, which is a network for photosynthesis(More)
Our present view of the structure of higher plant cell systems arising on the basis of electron, fluorescent, and confocal microscopy and also video movies of living cells under confocal microscope is presented. The role of the partition (conducting) system in the arrangement of the whole plant cell systems, their development, breakdown, and renewal is(More)
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