The Diageotropica Gene Differentially Affects Auxin and Cytokinin Responses throughout Development in Tomato1

The interactions between the plant hormones auxin and cytokinin throughout plant development are complex, and genetic investigations of the interdependency of auxin and cytokinin signaling have been limited. We have characterized the cytokinin sensitivity of the auxin-resistant diageotropica (dgt) mutant of tomato (Lycopersicon esculentum Mill.) in a range of auxin- and cytokinin-regulated responses. Intact, etiolated dgt seedlings showed cross-resistance to cytokinin with respect to root elongation, but cytokinin effects on hypocotyl growth and ethylene synthesis in these seedlings were not impaired by the dgt mutation. Seven-week-old, green wild-type and dgt plants were also equally sensitive to cytokinin with respect to shoot growth and hypocotyl and internode elongation. The effects of cytokinin and the dgt mutation on these processes appeared additive. In tissue culture organ regeneration from dgt hypocotyl explants showed reduced sensitivity to auxin but normal sensitivity to cytokinin, and the effects of cytokinin and the mutation were again additive. However, although callus induction from dgt hypocotyl explants required auxin and cytokinin, dgt calli did not show the typical concentration-dependent stimulation of growth by either auxin or cytokinin observed in wild-type calli. Cross-resistance of the dgt mutant to cytokinin thus was found to be limited to a small subset of auxin- and cytokinin-regulated growth processes affected by the dgt mutation, indicating that auxin and cytokinin regulate plant growth through both shared and separate signaling pathways.

Evolving Patterns of Euroscepticism in the Danish Political Landscape. EPIN Commentary No. 25/15 July 2015

Catharina Sørensen observes in this new EPIN Commentary that the most significant result of the Danish elections on June 18th was not the change of government from centre-left to centre-right, but rather the possibility that the anti-immigration, anti-European integration Danish People’s Party (DPP) would also enter government. While its leadership elected not to do so, but rather to exercise influence from outside, the author further notes that one positive outcome of a new pro-European government that is dependent on a largely eurosceptic supporting party could be that EU issues will finally get the prominence in Danish politics that they deserve.

To be in, or to be out: reflections on the Danish referendum. EPIN Commentary No. 29, 10 December 2015

In this EPIN Commentary, Catharina Sørensen offers her reflections on Denmark’s referendum, held on December 3rd, on whether the country should change its blanket opt-out on all justice and home affairs cooperation in the EU to the more nuanced opt-in model adopted by the UK and Ireland. In her view, the outcome reflected the two separate ‘languages’ deployed in the public debate over the referendum – the emotional discussion about sovereignty, which appealed to the heart, and the technical argument about cooperation, which appealed to reason. In using these two languages, the campaigners spoke past one another, failed to understand each other and divided Denmark into two opposing camps.

ERP-CDI : Enterprise Resource Planning - Capacity Development Index : Africa : [research report 2012]

credits: Constanze Couzens, Kevin Rosenberger, Frances Weiß, Patrick Wirz [editor], Catharina Zschieck ; Magdeburg Research and Competence Cluster for Very Large Business Applications, Very Large Business Applications Lab

The Latin letters of Antonio de Gouvea /

Four letters and epigrams dedicated to Catherine de Bauffremont. cf. p. 35.

Archiv für schweizerische reformations-geschichte.

"Durch die direction: graf Theodor Scherer-Boccard ... Friedrich Fiala ... [und] Peter Bannwart."

Institutum Societatis Jesu /

Mode of access: Internet.

Primeira [-quarta] parte da Historia de S. Domingos : particular do reino e conquistas de Portugal /

Includes indexes.

Freundschaftlicher briefwechsel zwischen Gotthold Ephraim Lessing und seiner frau ...

"Vorrede des Herausgebers" signed: K.G. Lessing.

Die laute der Glarner mundarten,

The first part was issued as inaugural dissertation, Zürich, 1914, under title: Der vokalismus der Glarner mundarten.

Refutação da proposta do Sr. J.F. Ferreira de Castro, apresentada na sessão de 10 de setembro de 1834, em a camara dos senhores deputados da nação Portugueza: por um cidadão liberal que não emigrou.

Manuscript note at end.

Da perfeicão da vida monastica, e da vida solitaria.

Mode of access: Internet.

Briefe von Goethes Mutter an ihren Sohn, Christiane und August v. Goethe.

Mode of access: Internet.