Naturwissenschaftliche Reise nach Mossambique : auf Befehl seiner Majestät des Königs Friedrich Wilhelm IV. in den Jahren 1842 bis 1848 ausgeführt

Bände: Zoologie I : Säugethiere : mit sechs und vierzig Tafeln : 1852 Zoologie II : Vögel : 15 Tafeln [ca. 1860] Zoologie III : Amphibien : mit drei und dreissig Tafeln, 1882 Zoologie IV : Flussfische : mit zwanzig Kupfertafeln, 1868 Zoologie V : Insecten und Myriopoden : mit fünf und dreissig Kupfertafeln, 1862 Botanik I. Abtheilung : mit acht und vierzig Tafeln, 1862 Botanik II. Abtheilung : mit dreizehn Tafeln, 186

Zafar, Capital of Himyar, Sixth Preliminary Report, February–March 2006

Die Grabungsmannschaft der Universität Heidelberg untersucht Zafar – Hauptstadt der himyarischen Stammeskonföderation – seit 1998. Dieses interdisziplinäre Projekt erbrachte Funde in der Kunstgeschichte, Botanik und Chronologi

Lars Hällbom; Nitrogenase regulation and ultrastructure of heterocystous cyanobacteria; free living and in lichen symbiosis.

Doktoravhandling forsvart i Botanisk auditorium, Uppsala Universitet 19. mai 1982. (Inst. for fysiologisk botanik, Uppsala Universitet)

Transcriptomic footprints disclose specificity of reactive oxygen species signaling in Arabidopsis

Reactive oxygen species ( ROS) are key players in the regulation of plant development, stress responses, and programmed cell death. Previous studies indicated that depending on the type of ROS ( hydrogen peroxide, superoxide, or singlet oxygen) or its subcellular production site ( plastidic, cytosolic, peroxisomal, or apoplastic), a different physiological, biochemical, and molecular response is provoked. We used transcriptome data generated from ROS-related microarray experiments to assess the specificity of ROS-driven transcript expression. Data sets obtained by exogenous application of oxidative stress-causing agents ( methyl viologen, Alternaria alternata toxin, 3-aminotriazole, and ozone) and from a mutant ( fluorescent) and transgenic plants, in which the activity of an individual antioxidant enzyme was perturbed ( catalase, cytosolic ascorbate peroxidase, and copper/zinc superoxide dismutase), were compared. In total, the abundance of nearly 26,000 transcripts of Arabidopsis ( Arabidopsis thaliana) was monitored in response to different ROS. Overall, 8,056, 5,312, and 3,925 transcripts showed at least a 3-, 4-, or 5- fold change in expression, respectively. In addition to marker transcripts that were specifically regulated by hydrogen peroxide, superoxide, or singlet oxygen, several transcripts were identified as general oxidative stress response markers because their steady-state levels were at least 5- fold elevated in most experiments. We also assessed the expression characteristics of all annotated transcription factors and inferred new candidate regulatory transcripts that could be responsible for orchestrating the specific transcriptomic signatures triggered by different ROS. Our analysis provides a framework that will assist future efforts to address the impact of ROS signals within environmental stress conditions and elucidate the molecular mechanisms of the oxidative stress response in plants

New bryophyte taxon records for tropical countries 4

Nord Kivu: c. 6 km north of Lubero, on sandy soil of tree-shaded road cutting, c. 1800m, 0º 8' S, 29º 14' E, 11 Aug 1988. C.R. Stevenson Z 78f, det. E.W. Jones (BM, & herb. C.R. Stevenson). Growing mixed with Frullania serrata, Pilotrichella, Trachypodopsis, etc. Distrib.: Annobon, Bioko, Burundi, Cameroun, Kenya, Rwanda, Sao Tome, Tanzania

Ackerbohnen

Das Merkblatt informiert über Botanik, Sortenwahl, Fruchtfolge, ökologischen Anbau und Pflege bis zur Verwendung und Vermarktung der Ackerbohne

The Compleat Naturalist: A Life of Linnaeus. Wilfrid Blunt. New York: The Viking Press, 1971. 256 pp. $14.95.

Excerpt: Not all historians agree thoroughly with Julius von Sachs\u27 suggestion in the Geschichte der Botanik (1875) that the work of Carl von Linnd marked the conclusion of an old epoch rather than the beginning of a new one, but it is true that most of Linnaeus\u27 contributions were elaborations of the views of his predecessors. Except to historians of science, his sexual system of the classification of plants is all but forgotten. Yet as the grand nomenclator of the eighteenth century, and the regulator and popularizer (if not the innovator) of binomial nomenclature in biology, his place is secure in our memory