Results 11 to 20 of about 14,195 (271)
Evidence for phloem loading via the abaxial bundle sheath cells in maize leaves [PDF]
Plant Cell, 2021 Margaret Bezrutczyk +2 more
exaly +2 more sources
Symplasmic transport and phloem loading in gymnosperm leaves. [PDF]
Protoplasma, 2011 Despite more than 130 years of research, phloem loading is far from being understood in gymnosperms. In part this is due to the special architecture of their leaves. They differ from angiosperm leaves among others by having a transfusion tissue between bundle sheath and the axial vascular elements.
Liesche J, Martens HJ, Schulz A.
europepmc +5 more sources
Supplemental macronutrients and microbial fermentation products improve the uptake and transport of foliar applied zinc in sunflower (Helianthus annuus L.) plants. Studies utilizing micro X-ray florescence. [PDF]
, 2014 Enhancing nutrient uptake and the subsequent elemental transport from the sites of application to sites of utilization is of great importance to the science and practical field application of foliar fertilizers.
Cliff eRamsier +9 more
core +9 more sources
Symplastic Phloem Loading in Poplar [PDF]
Plant Physiology, 2014 Sap is driven through phloem sieve tubes by an osmotically generated pressure gradient between source and sink tissues. In many plants, source pressure results from thermodynamically active loading in which energy is used to transfer sucrose (Suc) from mesophyll cells to the phloem of leaf minor veins against a concentration gradient.
Cankui Zhang +6 more
openaire +2 more sources
The evolution of minor vein phloem and phloem loading [PDF]
American Journal of Botany, 2001 Phylogenetic analysis provides a rational basis for comparative studies of phloem structure and phloem loading. Although several types of minor vein companion cell have been identified, and progress has been made in correlating structural features of these cells with loading mechanisms, little is known about the phylogenetic relationships of the ...
R, Turgeon, R, Medville, K C, Nixon
openaire +2 more sources
The Evidence for Symplastic Phloem Loading [PDF]
Plant Physiology, 1991 Experimental protocols used to study the route(s) of phloem loading in source leaves are evaluated; they include the analysis of plasmodesmatal ultrastructure and distribution, mobile compounds in the free space, loading patterns of exogenous sugars, the site of sugar synthesis, and dye coupling. All these methods have drawbacks.
R, Turgeon, D U, Beebe
openaire +2 more sources
Passive phloem loading and long-distance transport in a synthetic tree-on-a-chip [PDF]
, 2017 Vascular plants rely on differences of osmotic pressure to export sugars from regions of synthesis (mature leaves) to sugar sinks (roots, fruits). In this process, known as M\"unch pressure flow, the loading of sugars from photosynthetic cells to the ...
A Lang +36 more
core +2 more sources
Frontiers in Plant Science, 2013 The discovery of abundant plasmodesmata at the bundle sheath/phloem interface in Oleaceae (Gamalei, 1974) and Cucurbitaceae (Turgeon et al., 1975) opened the questions whether these plasmodesmata are functional in phloem loading and how widespread is ...
Denis R. Batashev +4 more
doaj +1 more source
Plant Methods, 2022 Background Plant plasma membrane transporters play essential roles during the translocation of vectorized agrochemicals. Therefore, transporters associated with phloem loading of vectorized agrochemicals have drawn increasing attention. As a model system,
Yongxin Xiao +8 more
doaj +1 more source
Phloem Loading in Squash [PDF]
Plant Physiology, 1977 Squash (Cucurbita pepo L. var. melopepo torticalis, Bailey) leaves were supplied with (14)C-sucrose, then specific radioactivities of the glucose and galactose moieties of translocated stachyose were determined. In every case, the specific radioactivity of the galactose moiety was greater than that of the glucose moiety.
openaire +2 more sources