Showing papers in "Biochemical Systematics and Ecology in 1999"

TL;DR: The main biological and pharmacological effects reported for condensed tannins can be classified into antibacterial and antiviral activities, enzyme inhibition, anti-oxidative effects, antimutagenic and antitumoral properties, next to some more specific interactions e.g. with vascular and cardial systems and inflammation processes.

TL;DR: This review provides a comprehensive account of phytoalexin induction throughout the plant kingdom, with special attention to comparative aspects.

TL;DR: It is found the polysaccharide compositions of the lignified cell walls were similar and differed in similar ways from the poly Saccharides of unlignifiedCell walls from the same species, suggesting the possible evolution of Poales families.

TL;DR: The rosmarinic and caffeic acid contents of 96 Lamiaceae taxa were investigated using a TLC-densitometric method and, with the exception of 3 Lamioideae species, caffeic Acid was found in measurable quantities in all taxa studied.

TL;DR: The level of genetic diversity of Salvia fruticosa in Crete and its relation to the essential oil profiles was assessed using RAPD markers.

TL;DR: Juniperus sabina var.

TL;DR: Plant extracts of a group of 57 species from 21 different botanical families, harvested from the wild in southeastern Spain, were screened for antiinsect activity using the stored grain pest Tribolium castaneum Herbst to induce either growth inhibition or repellency on the target insect.

TL;DR: The flowers of 20 native taxa of Petunia (Solanaceae) were investigated by HPLC for the occurrence of anthocyanins, and petunidin 3-glucosyl p-coumaroylrutinoside-5- glucoside was unambiguously determined by spectral methods to be pet unidin.

TL;DR: Molecular trees based on rbc L DNA sequences appear to provide a very useful framework to assess the comparative merits and usefulness of secondary compound classes as chemotaxonomic characters, and molecular information also can be used as a tool to study the evolution of small chemical compounds.

TL;DR: The phenolic composition of the seedling leaves of 10 birch species was compared and the view that the diploid white birches form a continuum of closely related taxa is supported.

TL;DR: Fossil evidence supported the Bering land bridge hypothesis as the explanation for the formation of the disjunct pattern in Hamamelis, and the need for a taxonomic reexamination is suggested.

TL;DR: From the data obtained, classification of the Amaranthaceae as a betaine – accumulating family would appear to be justified.

TL;DR: The chemotaxonomic relevance of sesquiterpenoids within the Achillea millefolium group has been evaluated by means of morphological, anatomical, cytological and phytochemical data and characteristic for each species are shown.

TL;DR: Taxol, a tubulin binding diterpene originally isolated from the Pacific Yew, has been discovered in the African Fern Pine, Podocarpus gracilior Pilger (Podocarpaceae), this is the first report of the occurrence of this compound in plants outside the Taxaceae family.

TL;DR: The flavonoids of Teucrium leucocladum and T. polium were studied and chemosystematic relationships discussed and one methylated aglycone (cirsimaritin) was identified.

TL;DR: Several classes of isozyme characters are recognized including the number of genes that control a given enzyme system, intralocus and interlocus heteropolymer assembly, tissue-specific gene expression, developmental patterns of enzyme expression, and post-translational modification of gene products.

TL;DR: The data indicate that maackiain may be an important component in BGM resistance in the wild chickpea C. bijugum and that the resistance is enhanced in the presence of the pathogen.

TL;DR: Variations detected in the concentration of some of the 13 secondary metabolites isolated in this study are discussed in connection with relevant seasonal changes of incidental environmental factors such as temperature, solar radiation, water stress and presence of predatory insects.

TL;DR: With the exception of H. rotundatum, which grows in shaded places, all species exhibit a similar pattern of phenolic substances with chlorogenic acid, 3,5-dicaffeoylquinic acid and luteolin 7-O-glucoside as the main compounds.

TL;DR: Nine polymorphic out of 13 isoenzymes used to assess genetic diversity in seven natural Cupressus sempervirens populations in South-western Anatolia showed a high level of genetic diversity within populations, and Pgm-B was one of the loci contributing most to interpopulation differentiation.

TL;DR: Parents and hybrid populations of big sagebrush in Salt Creek Canyon, Utah, show clinal variation in terpene composition across a hybrid zone, and several terpenes produced by both parental taxa were not produced by hybrids.

TL;DR: Starch gel electrophoresis was employed to estimate the levels of genetic variation among five entities of the Macrozamia heteromera (Zamiaceae) group which can be recognised on morphological grounds, suggesting that these species are either recently evolved or they are depauperate in genetic variation due to inbreeding.

TL;DR: The distribution of alkaloids derived from tyrosine and anthranilic acid in the Angiospermae is discussed and their role in the development of chemotaxonomic concepts in the subclasses Magnoliiflorae, RanunculiflorAE, Caryophyll iflorae and Rutiflora sensu Dahlgren has been reviewed.

TL;DR: The enrichment of aerophobin-2 (and of aerothionin) in mantles, mucus and egg masses that are vulnerable and exposed to predators and/or pathogens argues for defensive functions of the respective alkaloids even though this hypothesis still needs to be experimentally corroborated.

TL;DR: Analysis of the mitochondrial cytochrome oxidase subunit I sequences of four species of Charybdis crabs reveals genetic differences between them and the phylogenetic affinities among them, and no sequence divergence was observed between samples from Taiwan and the Zhujiang estuary.

TL;DR: Results reinforce the differentiation of Argentinian Flaveria into two species: F. bidentis and F. haumanii (formerly F. angustifolia).