Showing papers in "Zeitschrift für Pflanzenphysiologie in 1972"

TL;DR: In this article, Mesembryanthemum crystallinum grown under saline conditions in NaCl medium shows the typical gas exchange reactions known from CAM plants, exhibiting a clear CO 2 uptake in the dark.

TL;DR: In this paper, the authors present a feed back-Hemmung der PEP-Carboxylase durch L-Malat einer der den Diurnalen Saurerhythmus kontrollierenden Faktoren sein konnte.

TL;DR: The contact cells of the rays which provide the connection between rays and vessels were found to differ from the other ray cells by a much increased respiratory and phosphatase activity, suggesting that the contact cells are involved in an active secretion of sugars into vessels.

TL;DR: In this paper, the authors show that with minimal Ca, the plants show obvious signs of damage yet still they form crystals of Ca oxalate although to a lesser extent as compared with ''normal« controls.

TL;DR: In this paper, the authors studied the transport of 14 C-labeled assimilates during the main growth period of two Laminaria species, and the pathway of translocation was studied by histoautoradiography.

TL;DR: Abscisic acid, which inhibits stomatal opening, prevents the influx of K + ions into the guard cells in epidermal strips from leaves of Vicia jaba as discussed by the authors.

TL;DR: A cell free system from cambial tissue of Salix alba has been shown to catalyze the reduction of ferulic acid to coniferyl alcohol, which requires ATP, coenzyme A, and reduced pyridine nucleotides.

TL;DR: Les resultats positifs obtenus en cultivant les microspores de Tabac dans des antheres de Petunia, et les caracteristiques du conditionnement laissent entrevoir des possibilites de reproduction du phenomene hors de ’anthere, ce qui permettrait une analyse plus aisee.

TL;DR: The findings are interpreted as tissue-specific endopolyploidization and cell-specific extra replication of the heterochromatin (DNA amplification), dependent on differential effects of the growth regulators.

TL;DR: Abscisic acid (ABA) has been found to strongly stimulate net uptake of Na +, K + and Cl − ions in discs of beetroot tissue once the tissue cells have acquired a capability for uptake of these ions.

TL;DR: In Solanum tuberosum adventitious embryos were produced by a callus formed by proliferating connective tissue, and led to haploid and diploid plants of both species.

TL;DR: It is concluded that the bacterial symbiosis in Ardisia species is based on the fact that the bacteria provide the host plant with cytokinins that it is unable to synthesize itself.

TL;DR: In this paper, it was shown that Gibberellic acid A 3 inhibits the synthesis of anthocyanin as a function of its concentration in the medium, and that the inhibition does not arise out of a differential growth among the cultures.

TL;DR: A comparison of green and chlorotic plants showed that there is a significant correlation between the copper and nitrogen contents of both as discussed by the authors, suggesting that copper tolerance may be due to chelation of the metal by peptides that are not extractable by water alone.

TL;DR: Both findings suggest that the regulation of the isofloridoside pathway may occur by activation of already existing enzyme molecules rather than by the induction of enzyme new-formation.

TL;DR: In this article, Maize seedlings were maintained under four nutrient regimes viz full nutrient (FN), minus nitrogen (−N), minus phosphorus (−P) and minus potassium (−K) for a period of 20 days.

TL;DR: In this article, plants of Sinapis alba were grown under two different light intensities: weak light and strong light conditions, and they showed a ratio of chlorophyll a: b of 3.7 under strong light and 4.8 under weak light.

TL;DR: Results indicated that siliques (smallest grafting unit used in the authors' experiments) are the main sites of biosynthesis for those glucosinolates which are stored in seeds, and that the stock Bronowski is able to produce and transport to siliques all precursors needed for glucosInolate biosynthesis.

TL;DR: The results indicate that photosynthesis in the ungreened virescent is limited by the reaction catalyzed by RuDP carboxylase and provide new evidence for a major role of this enzyme in the photosynthesis of C4-plants.

TL;DR: There is an appreciable residual ΔO H+ after prolonged bubbling with CO 2 free N 2, and stoichiometry suggests that CO 2 fixation is the only cause for the observed apparent Δ O H+, but other experiments allow the conclusion that in addition there is ΔOH+ independent ofCO 2 fixation and more closely linked to photosynthetic electron flow.

TL;DR: The most important conclusion drawn from these experiments seems to be that not only the unidirectional flows proceeding against a gradient of electrochemical potential are inhibited by the inhibitors, the flows in the opposite direction and in the direction of simple physico-chemical forces being inhibited in the same sense and often to the same degree.

TL;DR: The majority of DOPA oxidase and catechol oxidase activities in stem tissue of Beta vulgaris L. were sedimentable and most of the sedimentable peroxidase activity was associated with a light membrane fraction but some activity coincided with mitochondria in the gradient.

TL;DR: In this article, Raphanus sativus L. cv. Cavalier (radish) plants were sprayed with 30 mg/l concentration of each of four growth regulators, and fumigated with ozone at a concentration of 25 parts per hundred million for 4 h.

TL;DR: The action of coumarin on cell swelling seems to be quite specific, as all of the 15 related compounds failed to induce the characteristic phenomenon.

TL;DR: In this article, the fatty acid patterns were investigated qualitatively and quantitatively by gas liquid chromatography in monthly intervals and the contents of fatty acids were evaluated as percentage of total fatty acids (shown in table 1) and as % of dry weight of barks (table 2).

TL;DR: In this article, the primary leaves of virescent seedlings (v 18 ) of Zea mays L. were studied during greening, and the results suggest a block in the dark enzymatic reactions of photosynthesis.

TL;DR: In this paper, the intracellular distribution of zinc within the leaves of zinc tolerant Silene cucubalus was studied by electron microscopic and biochemical analysis, showing that approximately 10% of the total zinc was accumulated in the cell wall, where this tightly bound zinc could be shown by electron micrographs.

TL;DR: The Regenerationsfahigkeit der Blatter hangt von ihrem Alter und vom Alter der Pflanzen ab, von denen sie stammen.

TL;DR: In the habituated tissue and crown gall of Scorzonera hispanica, cultivated in vitro, two polyamines occur in larger amounts than in the normal tissue, the greatest increase being found in the crown gall tumor.

TL;DR: Dissolution of cell wall material has been recorded in the cortical and provascular elements of the quiescent root meristems of Allium cepa L. bulbs, indicating elaboration of massive rough endoplasmic reticular elements which directly participate in the breakdown process.