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Université de Fribourg

The PAM1 gene of petunia, required for intracellular accommodation and morphogenesis of arbuscular mycorrhizal fungi, encodes a homologue of VAPYRIN

Feddermann, Nadja ; Duvvuru Muni, Rajasekhara Reddy ; Zeier, Tatyana ; Stuurman, Jeroen ; Ercolin, Flavia ; Schorderet, Martine ; Reinhardt, Didier

In: The Plant Journal, 2011, vol. 64, no. 3, p. 470–481

Most terrestrial plants engage into arbuscular mycorrhizal (AM) symbiosis with fungi of the phylum Glomeromycota. The initial recognition of the fungal symbiont results in the activation of a symbiosis signalling pathway that is shared with the root nodule symbiosis (common SYM pathway). The subsequent intracellular accommodation of the fungus, and the elaboration of its characteristic feeding...

Université de Fribourg

A transgenic dTph1 insertional mutagenesis system for forward genetics in mycorrhizal phosphate transport of Petunia

Wegmüller, Sarah ; Svistoonoff, Sergio ; Reinhardt, Didier ; Stuurman, Jeroen ; Amrhein, Nikolaus ; Bucher, Marcel

In: The Plant Journal, 2008, vol. 54, no. 6, p. 1115 - 1127

The active endogenous dTph1 system of the Petunia hybrida mutator line W138 has been used in several forward-genetic mutant screens that were based on visible phenotypes such as flower morphology and color. In contrast, defective symbiotic phosphate (Pi) transport in mycorrhizal roots of Petunia is a hidden molecular phenotype as the symbiosis between plant roots and fungi takes place...

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...