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Université de Fribourg

Reduced caterpillar damage can benefit plant bugs in Bt cotton

Eisenring, Michael ; Naranjo, Steven E. ; Bacher, Sven ; Abbott, Angelique ; Meissle, Michael ; Romeis, Jörg

In: Scientific Reports, 2019, vol. 9, no. 1, p. 2727

Bt cotton was genetically modified to produce insecticidal proteins targeting Lepidopteran pests and is therefore only minimally affected by caterpillar damage. This could lead to reduced levels of inherent, systemically inducible defensive compounds in Bt cotton which might benefit other important cotton herbivores such as plant bugs. We studied the effects of plant defense induction on the...

Université de Fribourg

Bacillus subtilis PTA-271 counteracts Botryosphaeria dieback in grapevine, triggering immune responses and detoxification of fungal phytotoxins

Trotel-Aziz, Patricia ; Abou-Mansour, Eliane ; Courteaux, Barbara ; Rabenoelina, Fanja ; Clément, Christophe ; Fontaine, Florence ; Aziz, Aziz

In: Frontiers in Plant Science, 2019, vol. 10, p. -

Plant pathogens have evolved various strategies to enter hosts and cause diseases. Particularly Neofusicoccum parvum, a member of Botryosphaeria dieback consortium, can secrete the phytotoxins (-)-terremutin and (R)-mellein during grapevine colonization. The contribution of phytotoxins to Botryosphaeria dieback symptoms still remains unknown. Moreover, there are currently no efficient control...

Université de Fribourg

GABA immunostaining in the central complex of dicondylian insects

Homberg, Uwe ; Humberg, Tim?Henning ; Seyfarth, Jutta ; Bode, Katharina ; Quintero Pérez, Manuel

In: Journal of Comparative Neurology, 2018, vol. 526, no. 14, p. 2301–2318

The central complex is a group of midline-crossing neuropils in the insect brain involved in head direction coding, sky compass navigation, and spatial visual memory. To compare the neuroarchitecture and neurochemistry of the central complex in insects that differ in locomotion, ways of orientation, time of activity (diurnal, nocturnal), and evolutionary history, we studied the distribution...

Université de Neuchâtel

BABA in priming tomato for enhanced tolerance to drought, salinity and fungal stress and combinations thereof

Ben Rejeb, Ines ; Mauch-Mani, Brigitte (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2018.

La tomate compte parmi les légumes-fruits les plus importants sur le plan économique dans plusieurs pays. Cependant la sécheresse, la salinité et le les pathogènes constituent les principales causes de réduction et de variabilité des rendements des cultures. Bien que les plantes aient développé des capacités défensives contre ces stress, leur tolérance et résistance dépend du degré...

Consortium of Swiss Academic Libraries

Conformation-Specific Spectroscopy of Peptide Fragment Ions in a Low-Temperature Ion Trap

Wassermann, Tobias ; Boyarkin, Oleg ; Paizs, Béla ; Rizzo, Thomas

In: Journal of The American Society for Mass Spectrometry, 2012, vol. 23, no. 6, p. 1029-1045

Consortium of Swiss Academic Libraries

Fungicide modes of action and resistance in downy mildews

Gisi, Ulrich ; Sierotzki, Helge

In: European Journal of Plant Pathology, 2008, vol. 122, no. 1, p. 157-167