Results 231 to 240 of about 16,942 (255)
Some of the next articles are maybe not open access.
1975
Sieve elements typically have non-lignified cellulosic walls similar to those of parenchyma cells. The walls are often thickened and in most instances this thickening is described as “nacreous” thickening or the “nacre” wall. The term “nacre” was introduced because of the refractve properties of this wall and its characteristic lustre when viewed with ...
openaire +1 more source
Sieve elements typically have non-lignified cellulosic walls similar to those of parenchyma cells. The walls are often thickened and in most instances this thickening is described as “nacreous” thickening or the “nacre” wall. The term “nacre” was introduced because of the refractve properties of this wall and its characteristic lustre when viewed with ...
openaire +1 more source
Botanica Acta, 1995
AbstractThe sieve‐element characters of 34 species from the Proteaceae and Elaeagnaceae have been studied by transmission electron microscopy. While nondispersive protein bodies and dispersive P‐protein are typical components of both families, specific forms and/or their distinctive origin accentuate some taxa.
openaire +1 more source
AbstractThe sieve‐element characters of 34 species from the Proteaceae and Elaeagnaceae have been studied by transmission electron microscopy. While nondispersive protein bodies and dispersive P‐protein are typical components of both families, specific forms and/or their distinctive origin accentuate some taxa.
openaire +1 more source
The control of solute movement into sieve elements
Pesticide Science, 1972AbstractA review is given of work on the movement of solutes into sieve elements, particularly with regard to investigations in which sieve tube exudate is obtained via the severed stylets of the aphid Tuberolachnus salignus (Gmelin), sited on bark strips or stem segments of willow.Evidence is given showing that the uptake of naturally occurring ...
openaire +1 more source
Modeling the Hydraulic Conductivity of Phloem Sieve Elements
2019Phloem transport of photoassimilates affects nearly all aspects of plant life, from growth to reproduction. This chapter summarizes mathematical techniques to quantify the impact of sieve element anatomy on phloem transport processes.
openaire +2 more sources
Proceedings of the National Academy of Sciences of the United States of America, 2022
Yan Liu +2 more
exaly
Yan Liu +2 more
exaly
Sieve Elements in Haustoria of Parasitic Angiosperms
1990The necessity for conducting elements within haustoria of phanerogamic parasites is obvious, especially since holoparasitic angiosperms lack roots and assimilatory organs. Water as well as organic substances must be taken up, therefore, by specialized haustoria (Kuijt 1969; Kollmann and Dorr 1987). The faster the parasite grows, the more efficient must
openaire +1 more source
Sieve Element Structure in Relation to Function
1975Translocation in the phloem of higher plants represents a complex physiological process with several partial reactions working together. Uptake and release of substances, energy transfer as well as storage of assimilates, are involved; or there may be a requirement in some cases for the mechanism of long-distance transport.
openaire +1 more source
Sieve element biology provides leads for research on phytoplasma lifestyle in plant hosts
Journal of Experimental Botany, 2019Rita Musetti +2 more
exaly