Université de Neuchâtel

The sweetest thing: Advances in nectar research

Brandenburg, Anna ; Dell’Olivo, Alexandre ; Bshary, Redouan ; Kuhlemeier, Cris

In: Current Opinion in Plant Biology, 2009, vol. 12, no. 4, p. 486-490

We all appreciate the beauty of flowers, but we seldom consider their function in the life cycle of the plant. The function of beautiful flowers is to advertise the presence of nectar. Floral nectar is the key component in the mutualism between flowering plants and their pollinators. Plants offer nectar as a reward for the transport of pollen by animal vectors. Studying nectar is challenging...

Université de Neuchâtel

Adenosine 5'-Phosphosulfate Sulfotransferase and Adenosine 5'-Phosphosulfate Reductase Are Identical Enzymes

Suter, Marianne ; von Ballmoos, Peter ; Kopriva, Stanislav ; Op den Camp, Roel ; Schaller, Johann ; Kuhlemeier, Cris ; Schürmann, Peter ; Brunold, Christian

In: The Journal of Biological Chemistry, 2000, vol. 275, no. 2, p. 930-936

Adenosine 5'-phosphosulfate (APS) sulfotransferase and APS reductase have been described as key enzymes of assimilatory sulfate reduction of plants catalyzing the reduction of APS to bound and free sulfite, respectively. APS sulfotransferase was purified to homogeneity from Lemna minor and compared with APS reductase previously obtained by functional complementation of a mutant strain of...

Université de Neuchâtel

The composition and timing of flower odour emission by wild Petunia axillaris coincide with the antennal perception and nocturnal activity of the pollinator Manduca sexta

Hoballah, Maria Elena ; Stuurman, Jeroen ; Turlings, Ted C. J. ; Guerin, Patrick M. ; Connétable, Sophie ; Kuhlemeier, Cris

In: Planta, 2005, vol. 222, p. 141-150

In the genus Petunia, distinct pollination syndromes may have evolved in association with bee-visitation (P. integrifolia spp.) or hawk moth-visitation (P. axillaris spp). We investigated the extent of congruence between floral fragrance and olfactory perception of the hawk moth Manduca sexta. Hawk moth pollinated P. axillaris releases high levels of several...