Showing papers in "Journal of Plant Physiology in 1988"

TL;DR: A distinct role of Zn in membrane integrity and thus also in root exudation seems to be independent of the role of Ca and probably has ecological implications with respect to nutrient mobilization and microbial activity in the rhizosphere.

TL;DR: Embryogenic callus was derived from immature and mature zygotic embryos of Picea abies cultured in the dark on half strength LP medium containing 30 mM sucrose, 10 μM NAA and 5 μM BA to transfer the callus to other growth regimes for further development of the somatic embryos.

TL;DR: The hypothesis that endogenous cytokinins are involved in the regulation of adventitious root formation is supported after stem cuttings were rooted in nutrient solution.

TL;DR: Plants were regenerated from leaf segments of shoots raised in vitro from mature apple trees of the cultivars Akero, McIntosh, McIntOSH Wijcik, Gravenstein and the apple rootstock M26, revealing both embryoidlike structures and adventitious shoots.

TL;DR: In this article, the root growth in Norway spruce is associated with the development of the endodermis and lateral roots, and the role of root growth for water and mineral nutrient uptake and the importance of the apoplasmic pathway for the radial transport of calcium and water in basal root zones.

TL;DR: A cell suspension culture of Picea glauca with potential for sustained somatic embryo production has been successfully cryopreserved retaining very high levels of viability even after 1 year storage in liquid nitrogen.

TL;DR: High numbers of embryoids were obtained from cultures of isolated microspores of different rape genotypes and there appeared to be an interdependance between genotype, culture medium and incubation temperature.

TL;DR: Three independently isolated nodulation mutants of pea were compared, i.e.: supernodulating mutant nod3 and the nodulation resistant mutants K5 and K24, indicating that three different genes were involved.

TL;DR: Levels of regeneration were increased by having abaxial rather than adaxial surface in contact with the regeneration medium, although this effect was dependent on the presence of 0.1 or 1.0 mM putrescine but not the DNA methylation inhibitor 5-azacytidine.

TL;DR: In this article, an increase in phenylalanine ammonia-lyase (PAL) activity is necessary for the accumulation of anthocyanin in strawberry fruit, demonstrating that the increase in PAL activity is sufficient for the synthesis of Anthocyanins.

TL;DR: The results suggest that the temperature determines two separate events, the starch-maltose conversion and the synthesis of sucrose and its galactosides from the maltose moiety.

TL;DR: In this article, a tomato (Lycopersicon esculentum L. cv. UC-82) seedlings were chilled at 4°C for 4 days at a 16 h light and 8 dark cycle.

TL;DR: Protoplasts were isolated from one Lolium perenne L. and three Festuca arundinacea Schreb and almost 300 Lolium protoplast derived cell colonies formed albino shoots and two colonies formed green shoots.

TL;DR: In chloroplasts isolated from Cu-treated plants the accumulation of plastid pigments and lipoquinones was lower than in controls and it decreased with the increase of copper toxicity, and the loss of photochemical activity of photosystem I and photosystem II was observed at the late stage of leaf degradation (the leaves turned yellow).

TL;DR: Simulation of the response of the cytosolic fructose- 1,6-bisphosphatase, and measurements of the metabolite levels maintained at the CO2 compensation point show that the «threshold» for activating sucrose synthesis will be decreased as the temperature increases, which will favour Calvin cycle turnover at low rates of photosynthesis by allowing higher substrate concentrations to be maintained.

TL;DR: In this article, the salicylic acid (SA) was used for 7 days over a range of SA concentrations (100 μmol/L-1 mmol/L), and the effect on the level of ribulose-1,5-bisphosphate carboxylase/oxygenase (RubisCO) was examined.

TL;DR: It is concluded that chl a is degraded in the mutant by the following enzymatic reactions: Chl a ?

TL;DR: The biotransformation of titanium and substitution of other elements by titanium are processes which have been seldom detected but are a prerequisite in understanding the role of titanium in plants and in solving titanium-based environmental problems.

TL;DR: The data indicate a very wide range of genotypic adaptation to drought and heat in cereals, and the most heat tolerant cereal varieties were also the most drought tolerant ones.

TL;DR: Phosphoenolpyruvate (PEP) carboxylase activity in the roots of 5 plant species grown in nutrient solution at pH 6.0 was enhanced by up to 380 % when NH + 4 instead of NO - 3 ) was the nitrogen source.

TL;DR: In this article, Castor bean ( Ricinus communis L.) was grown over a wide range of external salinities (up to 160 mol m -3 NaCl) and effects on growth, ion distribution, and composition of xylem and phloem sap were studied.

TL;DR: The data support the view that in the short term, salinity reduces leaf elongation through osmotic effects on the turgor of expanding tissue in both mature and expanding tissue.

TL;DR: The influence of jasmonic acid (JA) on photosynthesis, dark respiration, photorespiration, and the activities of ribulose bisphosphate carboxylase/oxygenase and phosphoenolpyruvate car boxylase in 7-day-old barley seedlings was investigated.

TL;DR: It is confirmed that auxin may control a rapid phosphatidylinositol turnover in plant cells, which may be similar to the wellknown phosphoinositide response in animal cells.

TL;DR: Photomorphogenetic responses have been studied in a tomato (Lycopersicon esculentum Mill.) aurea (au) mutant which has yellow-green leaves and elongated hypocotyls when grown in white light.

TL;DR: Although glutathione was the major water-soluble non-protein sulfhydryl compound in spinach leaf tissue, the high levels of cysteine after exposure to excess sulfur indicate a rather poor metabolic control of intracellular levels of this compound.

TL;DR: Biochemical studies have shown that plant nodule GS consists of one or more major cytosolic and a minor plastidic GS polypeptide which assemble to form distinct octameric GS isoenzymes.

TL;DR: The relevance of a high ZN-efflux on Zn-net-uptake and the possibility that the last compartment was the result of a combined exchange from vacuoles and stele apoplast is discussed.

TL;DR: In this article, three plants, selected randomly among the 28 kanamycin resistant plants, were analysed using slot blot DNA hybridization and found to contain a sequence homologous to that of the NOS-NPT chimeric gene.

TL;DR: Large numbers of viable protoplasts were isolated from leaves of apple rootstocks M.9, MM.106 and Spartan and the scion variety Spartan and also from leaf tissues, callus and cell suspensions of Bramley's Seedling apple, resulting in the production of rooted, autotrophic plants.