Sesqui-, di-, and triterpenoids as chemosystematic markers in extant conifers—A review

  title={Sesqui-, di-, and triterpenoids as chemosystematic markers in extant conifers—A review},
  author={Angelika Otto and Volker Wilde},
  journal={The Botanical Review},
Chemosystematics is a common tool in systematics and taxonomy of extant plants. [] Key ResultDie zahlreichen Terpenoide können zu etwa 40 Strukturklassen der Sesquiterpenoide, 18 Klassen der Diterpenoide und wenige Klassen der Triterpenoide zugeordnet werden. Einige dieser Terpenoidklassen sind unspezifisch und unter allen Koniferen verbreitet (z.B. Cadinane, Humulane, Labdane, Pimarane). Andere Strukturklassen treten in bestimmten Clustern von Familien auf (z.B. Totarane in Podocarpaceae, Taxodiaceae und…

Chemical Diversity of Podocarpaceae in New Caledonia: Essential Oils from Leaves of Dacrydium, Falcatifolium, and Acmopyle Species

Cluster analysis based on the biosynthetic origin of their volatile terpenes led to the description of three distinct groups of essential oils and showed close relationships between those of D. araucarioides and D. balansae as well as between Those of A. pancheri and F. taxoides.

Terpenoids as chemosystematic markers in selected fossil and extant species of pine (Pinus, Pinaceae)

The comparative analysis of solvent-extractable biomarkers in fossil and related extant species is a valuable tool for (palaeo)chemosystematic studies of conifers.

Determination of the molecular signature of fossil conifers by experimental palaeochemotaxonomy – Part 1: The Araucariaceae family

Determination of the diagenetic molecular signatures of Araucariaceae through experimentation on extant representatives allows to complete the knowledge in botanical palaeochemotaxonomy and is relevant to palaeoenvironmental, environmental and archaeology purposes.

Biochemical characterization of diterpene synthases of Taiwania cryptomerioides expands the known functional space of specialized diterpene metabolism in gymnosperms.

This study identified a previously unrecognized group of monofunctional diTPSs in T. cryptomerioides, which suggests a distinct evolutionary divergence of the diTPS family in this species, and provides deeper insight into the functional landscape and molecular evolution of specialized diterpenoid metabolism in gymnosperms.

Secondary Metabolites from Rubiaceae Species

From an evolutionary point of view, Rubioideae is the most ancient subfamily, followed by Ixoroideae and finally Cinchonoideae, and the chemical biosynthetic pathway now supports this botanical conclusion.



Phylogenetic Relationships among the Genera of Taxodiaceae and Cupressaceae: Evidence from rbcL Sequences

Phylogenetic analyses produced four most parsimonious trees that differ only in the positions of three genera and the degree of resolution of a trichotomy within Cupressaceae s.l. str.

The phylogenetic positions of the conifer genera Amentotaxus, Phyllocladus, and Nageia inferred from 18s rRNA sequences

In conifers, the uniovulate cone occurred independently in Taxacaeae and Cephalotaxaceae, and in Podocarpaceae after the three families separated from Pinaceae, to support the hypothesis that the un Giovulate cone is derived from reduction of a multiovulate cone.

Chemosystematic studies in the genus Abies. III. Leaf and twig oil analysis of amabilis fir

The quantitative variation within trees, between trees, and among northern, central, and southern populations was determined and the high tree-to-tree variability obscures any significant geographic trend that may exist.

Chemosystematic studies in the genus Tsuga. Leaf and twig oil analysis of western hemlock

The chemical composition of the volatile oils of the leaves and twigs of western hemlock and the variations caused by transportation and storage, and those found within trees and within populations,

Chemosystematic studies in the genus Pseudotsuga. I. Leaf oil analysis of the coastal and Rocky Mountain varieties of the Douglas fir

The volatile leaf oils of the coastal and Rocky Mountain varieties of the Douglas fir were found to have distinctive terPene compositions and one may distinguish clearly between interior and coastal intermediate terpene patterns.

The Phylogeny of the Podocarpaceae Based on Morphological Evidence

A cladistic analysis of morphological evidence resulted in one most parsimonious tree, with Saxegothaea as sister group to other genera, supporting the recognition of segregate genera in the coniferous family Podocarpaceae.