22 Result(s)

Article

Ricinus communis cyclophilin: functional characterisation of a sieve tube protein involved in protein folding

The phloem translocation stream of the angiosperms contains a special population of proteins and RNA molecules which appear to be produced in the companion cells prior to being transported into the sieve tube ...

Maren Gottschalk, Elmar Dolgener, Beatriz Xoconostle-Cázares, William J. Lucas… in Planta (2008)

Article

Parallels between nuclear-pore and plasmodesmal trafficking of information molecules

Jung-Youn Lee, Byung-Chun Yoo, William J. Lucas in Planta (2000)

Article

Identification of immunologically related proteins in sieve-tube exudate collected from monocotyledonous and dicotyledonous plants

The mature, functional sieve-tube system in higher plants is dependent upon protein import from the companion cells to maintain a functional long-distance transport system. Soluble proteins present within the...

Christian Schobert, Lucian Baker, Judit Szederkényi, Pia Großmann, Ewald Komor… in Planta (1998)

Article

Rice phloem thioredoxin h has the capacity to mediate its own cell-to-cell transport through plasmodesmata

Rice (Oryza sativa L.) phloem sieve tubes contain RPP13-1, a thioredoxin h protein that moves around the plant via the translocation stream. Such phloem-mobile proteins are thought to be synthesized in the compa...

Yutaka Ishiwatari, Toru Fujiwara, K. C. McFarland, Keisuke Nemoto… in Planta (1998)

Article

Application of microinjection techniques to plant nutrition

To gain a full understanding of the complex processes that underlie plant nutrition requires the elucidation of the genetic, molecular, biochemical, biophysical, physiological and environmental factors that in...

William J. Lucas in Plant and Soil (1997)

Article

The molecular basis of potassium nutrition in plants

Over the last five years, the cloning and characterization of K⁺ transport genes corresponding to K⁺ channels (KAT1, AKT1, KST1, AKT2), associated subunits (KAB1) and a high-affinity transporter (HKT1) has opened...

Christina J. Smart, David F. Garvin, James P. Prince, William J. Lucas… in Plant and Soil (1996)

Article

Characterization and manipulation of embryogenic response from in-vitro-cultured immature inflorescences of rice (Oryza sativa L.)

Characterization and optimization of the embryogenic response from in-vitro-cultured immature inflorescences of rice (Oryza sativa L. sub-species indica and japonica) are described. Histological and morphological...

Jyoti R. Rout, William J. Lucas in Planta (1996)

Article

Pleiotropic effects of tobacco-mosaic-virus movement protein on carbon metabolism in transgenic tobacco plants

Transgenic tobacco (Nicotiana tabacum L. cv. Xanthi) plants expressing wild-type or mutant forms of the 30-kDa movement protein of tobacco mosaic virus (TMV-MP) were employed to study the effects of the TMV-MP on...

Amnon A. Olesinski, William J. Lucas, Esra Galun, Shmuel Wolf in Planta (1995)

Article

Establishment of a cell-to-cell communication pathway between separate carpels during gynoecium development

In the evolutionarily advanced angiosperm flower, postgenital fusion is often involved in the formation of the female reproductive organ, the gynoecium. In the present study, we report on the early establishme...

Chris van der Schoot, Margaret A. Dietrich, Marc Storms, Judith A. Verbeke… in Planta (1995)

Article

Mechanism of plasmodesmata formation in characean algae in relation to evolution of intercellular communication in higher plants

It is generally accepted that higher plants evolved from ancestral forms of the modern charophytes. For this reason, we chose the characean alga, Chara corallina Klein ex Willd., em. R.D.W. (C. australis R. Br.),...

Vincent R. Franceschi, Biao Ding, William J. Lucas in Planta (1994)

Article

Use of an extracellular, ion-selective, vibrating microelectrode system for the quantification of K⁺, H⁺, and Ca²⁺ fluxes in maize roots and maize suspension cells

An ion-selective vibrating-microelectrode system, which was originally used to measure extracellular Ca²⁺ gradients generated by Ca²⁺ currents, was used to study K⁺, H⁺ and Ca²⁺ transport in intact maize (Zea may...

Leon V. Kochian, Jon E. Shaff, Wiel M. Kühtreiber, Lionel F. Jaffe… in Planta (1992)

Article

Direct measurement of the reversal potential and current-voltage characteristics in the acid and alkaline regions of Chara corallina

A new vibrating probe-current voltage measuring system is described which enabled us to detect current-voltage curves in the acid and alkaline regions of Chara corallina (Klein ex Willd., em. R.D.W.). Extracellul...

Joachim Fisahn, William J. Lucas in Planta (1992)

Article

Effects of microtubule agents on the spatial and electrical properties of the plasma membrane inChara corallina

The freshwater algaChara corallina Klein ex Willd., em. R.D.W. (=C. australis R.Br.) develops alternating outward (acid) and inward (alkaline) current areas on its surface when illuminated. Exposure of cells to v...

Joachim Fisahn, William J. Lucas in Planta (1990)

Article

Control of photoassimilate movement in source-leaf tissues of Ipomoea tricolor Cav.

Autoradiographs obtained from discs from mature, peeled Ipomoea tricolor Cav. leaves indicated that a 15-min 2 mM p−chloromercuribenzene sulfonic acid (PCMBS) pretreatment did not prevent the accumulation of ¹⁴CO

Monica A. Madore, William J. Lucas in Planta (1987)

Chapter

Ion Transport Processes in Corn Roots: An Approach Utilizing Microelectrode Techniques

There have been many studies conducted on ion or salt absorption by plant roots. This research has focused both on the basic mechanisms involved in transporting the ion into the plant and on the mineral nutrie...

William J. Lucas, Leon V. Kochian in Advanced Agricultural Instrumentation (1986)

Article

Sugar uptake into Allium cepa leaf tissue: an integrated approach

Allium cepa L. leaves were subjected to enzymatic (pectolyase) and mechanical manipulation in order to ascertain the contribution made by various leaf tissues to the total sugar uptake by the leaf. In order to d...

Clyde Wilson, John W. Oross, William J. Lucas in Planta (1985)

Article

Ultrastructural and histochemical studies on guard cells

Serial thick sections of guard cells from Vicia faba L., Nicotiana tabacum L., Allium cepa L., Zea mays L. and Beta vulgaris L. were obtained systematically (600–800 nm) and viewed with the transmission electron ...

Alison C. Wille, William J. Lucas in Planta (1984)

Article

Mechanism of acquisition of exogenous bicarbonate by internodal cells of Chara corallina

Electrophysiological measurements on internodal cells of the alga, Chara corallina Klein ex Willd., em. R.D.W., showed that the potential across the plasmalemma was sensitive to the level of exogenous HCO ...

William J. Lucas in Planta (1982)