Results 261 to 270 of about 47,827 (294)

Xylem vascular anatomy and water transport of Salicornia europaea

Aquatic Botany, 1993
Abstract The xylem anatomy, changes in vessel member diameter at stem nodes and branch junctions, and effects of these changes on water flow rates and water potential in greenhouse and field grown Salicornia europaea L. (Chenopodiaceae) have been investigated. There was a two-fold decrease in vessel diameter at branch junctions and stem nodes.
Aaron M. Ellison, Karl J. Niklas, Scott Shumway   +2 more
openaire   +1 more source

Conflicting demands on angiosperm xylem: Tradeoffs among storage, transport and biomechanics

Plant, Cell & Environment, 2016
AbstractThe secondary xylem of woody plants transports water mechanically supports the plant body and stores resources. These three functions are interdependent giving rise to tradeoffs in function. Understanding the relationships among these functions and their structural basis forms the context in which to interpret xylem evolution.
R Brandon, Pratt, Anna L, Jacobsen
openaire   +2 more sources

Transport via xylem of trichloroethylene in wheat, corn, and tomato seedlings

Journal of Hazardous Materials, 2010
Transport via xylem of trichloroethylene (TCE) from roots to shoots in seedlings of wheat, corn, and tomato was measured following a 24-h exposure of plant roots to hydroponic solutions containing TCE. Dewdrops on plant leaves were also collected to test the foliar uptake by plants and the volatilization of TCE from shoot to air. Results indicated that
Yu H, Su, T, Liu, Yong C, Liang
openaire   +2 more sources

OsCOPT7 is involved in copper accumulation and transport through xylem

Journal of Hazardous Materials
Copper (Cu) is an essential micronutrient for humans, but excessive Cu in rice grains causes health risks. Currently, the mechanisms underlying Cu accumulation in rice are unclear. Here, we identified a novel member of the high-affinity copper transporter (Ctr)-like (COPT) protein family in rice, OsCOPT7, which controls Cu accumulation in rice grains ...
Mei Yan, Guan, Zhenzhen, Cao, Yu Chun, Xia, Ping, Xv, Xiao Yan, Lin, Ming Xue, Chen   +5 more
exaly   +3 more sources

Phosphorus transport to the xylem and its regulation by water flow

Planta, 1968
The effects of water flow on phosphorus uptake by roots and on its subsequent translocation to shoots were separated by giving short-term pulses of (32)P-labelled nutrient to intact tomato plants. At the end of a 5 min pulse, all the (32)P taken up by the plants was confined to the roots.
H, Greenway, B, Klepper
openaire   +2 more sources

Xylem Transport and the Negative Pressures Sustainable by Water

Annals of Botany, 1994
Abstract Experimental measurements of water's ability to sustain negative pressures are reviewed with special emphasis on the relevance of the results to xylem transport. Results vary over several orders of magnitude and depend on the conditions of testing.
openaire   +1 more source

Nitrogen Compounds Transported in the Xylem of Sugar Cane

Australian Journal of Plant Physiology, 1976
Microcapillary tubes were inserted directly into xylem vessels of leaves and stalks of sugar cane (Saccharum spp.) to determine the form in which nitrogen is translocated from the roots towards the leaves. On a low nitrogen regime, the xylem fluid of both sugar cane and related species and genera contained nitrogen dominantly in the amino form. Nitrate
openaire   +1 more source

Acropetal Auxin Transport and Xylem Regeneration-A Quantitative Study

The American Naturalist, 1954
Earlier experiments on the polarity of auxin-transport in shoots are critically discussed. The following points are emphasized: The importance of short-time experiments; the value of using physiological auxin-concentrations; the need for relating transport data to normal physiological processes; and, in particular, the necessity of guaranteeing that no
openaire   +1 more source

Transport of Minerals in tree Xylem

Annals of Botany, 1966
T. M. MORRISON, R. W. HEINE
openaire   +1 more source

Xylem Transport of Recently Fixed Carbon within Lupin

Australian Journal of Plant Physiology, 1987
PEH Minchin, GS McNaughton
openaire   +1 more source