Results 241 to 250 of about 2,535,891 (297)

Root xylem transport of amino acids in the root hemiparasitic shrub Olax phyllanthi (Labill) R.Br. (Olacaceaea) and its multiple hosts

Plant, Cell and Environment, 1994
J S Pate, W D Jeschke
exaly   +2 more sources

Arabidopsis boron transporter for xylem loading

Nature, 2002
Boron deficiency hampers the productivity of 132 crops in more than 80 countries. Boron is essential in higher plants primarily for maintaining the integrity of cell walls and is also beneficial and might be essential in animals and in yeast. Understanding the molecular mechanism(s) of boron transport is crucial for alleviating boron deficiency.
Junpei, Takano, Kyotaro, Noguchi, Miho, Yasumori, Masaharu, Kobayashi, Zofia, Gajdos, Kyoko, Miwa, Hiroaki, Hayashi, Tadakatsu, Yoneyama, Toru, Fujiwara   +8 more
openaire   +2 more sources

Ultrastructure of xylem parenchyma cells of barley roots in relation to ion transport to the xylem

Planta, 1974
The structure of xylem parenchyma cells is examined in relation to transport of ions through the root. Measurement of uptake of (86)Rb(+) and its transport through the root at different distances from the apex show that this is a general activity along the length of the root and not confined to a limited region.
A, Läuchli, D, Kramer, M G, Pitman, U, Lüttge   +3 more
openaire   +2 more sources

Ion Transport into the Xylem

Annual Review of Plant Physiology, 1977
TRANSPORT ACROSS THE ROOT . The Apoplast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. Transport in the Symplast . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . .
openaire   +1 more source

Physiology of Xylem Transport

1995
Root hairs of absorbing roots grow in the cavities of the soil, from where they obtain water and ions solubilised in it (Fig. 29.1). Water transport from the soil into the vessels of the central cylinder of the root occurs in the fluid phase and is driven by differences in water potential. The path of the water from the perirhizal zone into the vessels
Hans Mohr, Peter Schopfer
openaire   +1 more source

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

[20] Xylem Transport

1989
Publisher Summary Xylem perfusion is the use of pressure or suction to bring about the flow of an artificial solution through xylem vessels in an excised root or shoot segment. The advantages of a perfusion system are control over the composition of the solution entering the xylem vessels, ability to bring hormones and specific inhibitors into direct
openaire   +1 more source

Effect of leaf water status and xylem pH on metabolism of xylem-transported abscisic acid

Plant Growth Regulation, 1997
Metabolism and distribution of xylem-fed ABA were investigated in leaves of maize (Zea mays) and Commelina communis when water stress and xylem pH manipulation were applied. 3H-ABA was fed to excised leaves via the transpiration stream. Water stress was applied through either a previous soil-drying before leaves were excised, or a quick dehydration ...
Jianhua Zhang, Wensuo Jia, Da-Peng Zhang
openaire   +1 more source

The Transport of Potassium to the Xylem Exudate of Ryegrass

Journal of Experimental Botany, 1974
The membrane potentials of ryegrass root cells (Evo) were found to be linearly related to the logarithm of the external KC1 concentration ([KC1]0), over the range 0-1 to 20-0 mM. Exuda tion was studied over the same concentration range. The concentration of potassium in the exudate did not vary significantly with [KC1]0 but the rates of movement of ...
openaire   +1 more source

Xylem and phloem transport of micronutrients

2001
Knowledge on xylem, and especially phloem transport of micronutrients is important in developing our capacity to enhance loading of micronutrients into developing grain (which has consequences for human nutrition), to increase nutrient-use efficiency through increased remobilisation and re-utilisation of nutrients, to effectively nourish seedlings in ...
openaire   +1 more source