Showing papers in "Zeitschrift für Pflanzenphysiologie in 1984"

TL;DR: Low molecular weight carbohydrates (LMWC) occurring in both young and old leaves of 22 mangrove species from Northern Queensland (Australia) were identified using gas liquid and gas capillary chromatography.

TL;DR: In this article, young and old leaves from 22 mangrove species of Northern Queensland (Australia) were investigated for inorganic ions and organic acids, and the contribution of organic acids to the anion content was important in only a few cases.

TL;DR: In this paper, free amino acids, total methylated onium compounds (TMOC) and total nitrogen were investigated in young and old leaves of 22 mangrove species from Northern Queensland (Australia).

TL;DR: Conditions were established which allow quantitative isolation of protoplasts during the growth cycle of suspension cultures of Lycoperskon esculentum, and pictures obtained by staining with Giemsa suggest that binucleate protoplast were formed from cells which were interrupted in mitosis during protiplast isolation.

TL;DR: Recent studies indicate that hormonal regulation of tuberization could be related to phloem loading and unloading and carbohydrate translocation.

TL;DR: Regulation of an ER-localized Ca2+ compartment might be an important step in such complex processes as stimulus-transduction in gravitropism and a candidate for such an intracellular messenger is Ca2+.

TL;DR: Barley chloroplasts contain a latent chlorophyll-bleaching activity that depends on the presence of free fatty acids such as linolenic acid, and is distinct from lipoxygenase which requires fatty acids containing a 1-4 pentadiene unit.

TL;DR: Shoots from four-day old light-grown pearl millet seedlings, grown continuously in the presence of 1.32 × 10-5M norflurazon (NF), lacked chlorophyll and failed to accumulate abscisic acid (ABA) when water stressed.

TL;DR: Pinitol and, to a lesser extent, glycinebetaine increased in the leaves of salt stressed plants and the possibility of pinitol acting as a compatible cytosolute in this and other stress tolerant legumes is discussed.

TL;DR: The NaCl resistance of enzymes in crude extracts from the extreme halotolerant alga Dunaliella parva was investigated and a competitive type of interaction of the Cl - anion with the anionic substrate is observed, Consequently high concentrations of anionic substrates protect enzymes in vivo against Cl - inactivation.

TL;DR: A rabbit antisersum against spinach calmodulin was prepared and characterized and in Ouchterlony's immunodiffusion test, the antiserum gave with spinachCalmodulin rise to a single precipitin line, but it did not react with bovine brain cal modulin.

TL;DR: A system for the regeneration of callus and albino plantlets from protoplasts of proso millet is described, initiated by apparent somatic embryogenesis from protoplast-derived calli cultured for one or more passages on LS medium minus hormones.

TL;DR: In this article, it was shown that plants of V. sinensis tolerated NaCl concentrations as high as 150 mM in their growth media and showed a tendency to halophility by exhibiting a higher yield up to 50 mM NaCl ext.

TL;DR: Vegetative multiplication of a Catasetum hybrid was obtained by culturing in vitro root tips measuring about 1.5 mm in length and most of the protocorm-like bodies were regenerated from the explanted root tips, while some regeneration was obtained with callus cultures.

TL;DR: Vuoles were examined in cells and protoplasts of a fast growing tomato cell suspension culture by light and fluorescence microscopy and α-mannosidase was located exclusively in the vacuole and served as a convenient marker.

TL;DR: In this paper, it was shown that the effect of cytokinins is to change the growth form in the tip region of the side branches of the caulas of Funaria hygrometrica.

TL;DR: In Mahsuri rice callus cultures grown in light, the total amount ofcallus and the percentage of callus volume composed of embryogenic cells could be increased if 0.1–0.5 mg·l −1 K was added to medium containing 0.5 or 1.0 mg· l −1 2,4-D.

TL;DR: It was concluded firstly, that protein synthesis on plastid ribosomes was necessary at some stage for drought stress to elicit a rise in ABA synthesis, and secondly, that enzymes for every step in the synthesis of ABA are encoded on nuclear DNA.

TL;DR: An enzymatic NAD(P)H oxidase activity that generates species of toxic oxygen was located at the level of the lutoidic tonoplast, which results in latex coagulation within the bark of the stressed trees: the so-called dry-cuts syndrome.

TL;DR: Inhibition by MgATP, 3-phosphoglycerate, phosphoenolpyruvate and citrate was due primarily to their effect on the affinity of PFP for fructose 2,6-bisphosphate, a potent activator of the enzyme.

TL;DR: It seems likely, therefore, that stress-induced ABA synthesis requires rapid enzyme production in the cytosol but not in the plastid, as opposed to the other ways in which ABA accumulation in wheat seedlings was studied.

TL;DR: It is concluded that Glyceria roots show no major metabolic adaptation to hypoxia, and that their flood-tolerance is due mainly to aerenchyma.

TL;DR: The addition of increasing amounts of PCP or PCP-glucoside to the nutrient solution of soybean cultures showed that the glucoside was significantly less toxic than the original compound.

TL;DR: It is suggested that plant tissue culture media have no direct effect on the induction of mutations in cells cultured in vitro.

TL;DR: The unicellular red alga Porphyridium cruentum was cultured under exponential growth conditions and compared with sulphate- and nitrate starved stagnating cultures, leading to an almost complete restoration of phycobilisome number and chlorophyll content prior to the first cell division.

TL;DR: Callus of Theobroma cacao L. (cacao) possessing embryogenic competence occurred spontaneously with two clones of asexual embryos proliferated in vitro in a hormone-free basal medium by hypocotylary budding.

TL;DR: Correlations between plant parts are among the factors that control onset and course of dormancy and through which the behaviour of the plant in given winter climates could be modified.

TL;DR: Tuberisation in potato is accompanied by a substantial decrease in both total and reducing sugar levels in the stolon tip, and a positive and statistically significant correlation exists between the ratio of glucose : fructose and the degree of tuberisation as determined by fresh weight measurement.

TL;DR: Cell suspension cultures derived from Papaver bracteatum Lindl var.

TL;DR: Autotrophically grown Chlorella vulgaris cells show a low rate of hexose and amino acid uptake, but after pretreatment with glucose or glucose analogues the rate of uptake of hexoses and of six amino acids is increased one hundred-fold or more.