Showing papers in "Biochemical Systematics and Ecology in 1977"

TL;DR: A survey of the phospholipid composition of 97 strains representing 20 genera of the Actinomycetales showed that five groups could be distinguished on the basis of the presence or absence of certain nitrogenous phospholips, with chemical heterogeneity of the genera Actinomadura, Corynebacterium, Micropolyspora and Nocardia.

TL;DR: Data on the distribution of flavonoids in the angiosperms are summarized and patterns of occurence are shown to be related to plant evolution and the importance of these various distribution patterns is considered in relation to an ecological function for these flavonoid types.

TL;DR: A correlation was found between the levels of cyanide production and of tannins and the palatability of bracken Pteridium aquilinum L. Kuhn to sheep and deer and to the phytophagous locust Schistocerca gregaria.

TL;DR: Analysis of food and non-food plants showed a strong inverse correlation between food choice by guerezas and the concentration of procyanidin tannins, and there was less correlation with alkaloid content.

TL;DR: The diversity of chemical identity and mode of action of toxic substances present in plants is suggested to be partially the result of generalist herbivore grazing pressure, while convergence in digestibility-reducing substances and their method of function is due primarily to specialist Herbivore.

TL;DR: Non-ideal behaviour of the resin is suggestive of cooperative action between components and probably enhances the digestibility-reducing action of resin on in vitro proteolysis and growth-rates of Astroma quadrilobatum are negatively correlated with resin-phenoloxidase activity.

TL;DR: Cette evolution chimique des especes, parallele aa l'evolution morphologique decrite dans the litterature, semble en relation avec the philogenie du genre Thymus L.

TL;DR: A survey of flavonoids in the leaves of 81 species of the Zingiberales showed that, while most of the major classes of Flavonoid are represented in the order, only two families, the Zediberaceae and Marantaceae are rich in these constituents.

TL;DR: Fatty acids obtained from the total lipids extracted from different tissues of these marine animals contain relatively large amounts of long-chain polyunsaturated fatty acids (principally 20:5 and 22:6).

TL;DR: In this paper, the proposed roles for secondary compounds in plants are varied, although recent investigators have emphasized their defensive properties, and natural selection may be for their role in primary metabolic processes as well as in defence.

TL;DR: Oxygenated compounds (especially methacrolein and arthole) seemed to be more highly correlated with sagebrush utilization than hydrocarbons, and this correlation appeared to be inverse.

TL;DR: Analysis of the proportion of total and free amino acid nitrogen of 7 canavanine-synthesizing leguminous seeds has been determined and reveals a disproportional allocation of total seed nitrogen intoCanavanine.

TL;DR: Banzan Kumazawa reported some 300 years ago in Japan that rain or dew which washes the leaves of red pine is harmful to crops growing under the pine and De Candolle suggested also in 1832 that certain weeds secrete toxins which inhibit growth of crop plants.

TL;DR: A quantitative study of the carotenoids isolated from some selected prymnesiophytes harvested in exponential growth phase has been carried out, and it is concluded that theCarotenoid complement of the Chrysophyceae (in the narrow sense) should be compared with that of the Prymnesoophycesae.

TL;DR: Glycosidic patterns elucidated range from mono- to tri-glycosides, five of which are novel in plants, and the importance of those cited in the literature has been surveyed in relation to the chemosystematics of the Zygophyllaceae.

TL;DR: The discovery of luteolin 5-methyl ether in the Cyperaceae brings it closer in chemical terms to the Juncaceae, from which family this compound was first isolated.

TL;DR: It is suggested that the ecogeographical distribution of secondary products in Parthenium is probably a result of adaptive responses to various physical and biotic factors (herbivore pressure) in the environment.

TL;DR: It is postulated that the possession of laminarinases is ancient in Metazoa and has been either kept or lost by more evolved taxa depending on their feeding specialization, as has already been demonstrated for chitinases and cellulases.

TL;DR: Analysis of species representing most sections of all the genera in the family Polemoniaceae showed a range of variation in flavonoids comparable to variation already documented for gross morphological features, karyotypes and pollen grains.

TL;DR: Evidence has been obtained for a circadian rhythm of digestive enzymatic activities in Palaemon serratus where the photophase plays a role in the temporal regulation of these rhythms but modifies its principal characteristics.

TL;DR: Coevolutionary considerations support the concept that within related taxa, biosynthetic sequences of secondary metabolites can correspond directly with chemotaxonomic advancement.

TL;DR: The variability patterns agreed with the hypothesis that introgressive hybridization was the main reason for the intermediacy of Abies grandis and Abies concolor intermediate trees, and the intermediate populations were chemically significantly more A. concolor -like.

TL;DR: The Roanoke River population has been biochemically identified as M. rhothoecum and M. hamiltoni and glycerol-3-phosphate dehydrogenase and glucosephosphATE isomerase polymorphisms are described.

TL;DR: The effects of the changes in ploidy, which are accompanied by Robertsonian fusion and variation in the number of B chromosomes as contributory factors in the observed differences in flavonoid patterns are discussed.

TL;DR: Leaf extracts of 43 plants representing all 10 species of the genus Sarracenia were analyzed by 2D-PC, high voltage electrophoresis and G. C. C., for their amino acids and flavonoids to determine their taxonomic and ecological significance.

TL;DR: The shrimp Palaemon serratus was acclimatized at 9°, 15°, 18° and 25°, the lipid and fatty acids composition of the abdominal muscle show important variations and total lipid level and polyunsaturated fatty acids show an inverse relationship with temperature.

TL;DR: In this article, the Fouquieriaceae cluster into four groups on the basis of floral anthocyanin content and four groups agree with species groupings based on morphological characters.

TL;DR: The results suggest care is needed in choosing isozyme mobilities as syngen or species characters in isolates from different syngens, different sites, and even the same site and syngn; the pattern of variation differed with the enzyme studied.

TL;DR: The inclusion of the Cunoniaceae within a rosalean alliance is unquestioned, but its position in such an alliance is uncertain, and a detached position similar to that assigned to this family in Dahlgren's system seems appropriate.

TL;DR: Electrophoretic variation in nine red cell proteins was analysed in 256 specimens belonging to six species of Malayan Rattus (including one with two subspecies) of the subgenus Rattus and results corresponded better with results based on morphological characters than those based on cytological characters.