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Université de Fribourg

Genome insights of the plant-growth promoting bacterium Cronobacter muytjensii JZ38 with volatile-mediated antagonistic activity against Phytophthora infestans

Eida, Abdul Aziz ; Bougouffa, Salim ; L’Haridon, Floriane ; Alam, Intikhab ; Weisskopf, Laure ; Bajic, Vladimir B. ; Saad, Maged M. ; Hirt, Heribert

In: Frontiers in Microbiology, 2020, vol. 11, p. 369

Salinity stress is a major challenge to agricultural productivity and global food security in light of a dramatic increase of human population and climate change. Plant growth promoting bacteria can be used as an additional solution to traditional crop breeding and genetic engineering. In the present work, the induction of plant salt tolerance by the desert plant endophyte Cronobacter sp. ...

Université de Fribourg

Cooccurrence of NDM-1, ESBL, RmtC, AAC(6′)-Ib, and QnrB in Clonally Related Klebsiella pneumoniae Isolates Together with Coexistence of CMY-4 and AAC(6′)-Ib in Enterobacter cloacae Isolates from Saudi Arabia

Al-Agamy, Mohamed H. ; El-Mahdy, Taghrid S. ; Radwan, Hesham H. ; Poirel, Laurent

In: BioMed Research International, 2019, p. -

The aim of this study was to investigate the mechanisms responsible for resistance to antimicrobials in a collection of enterobacterial isolates recovered from two hospitals in Saudi Arabia. A total of six strains isolated from different patients showing high resistance to carbapenems was recovered in 2015 from two different hospitals, with four being Klebsiella pneumoniae and two...

Université de Fribourg

A Boundary Property for Upper Domination

AbouEisha, Hassan ; Hussain, Shahid ; Lozin, Vadim ; Monnot, Jérôme ; Ries, Bernard ; Zamaraev, Viktor

In: Lecture Notes in Computer Science, 2016, vol. 9843, p. 229-240

An upper dominating set in a graph is a minimal (with respect to set inclusion) dominating set of maximum cardinality. The problem of finding an upper dominating set is generally NP-hard, but can be solved in polynomial time in some restricted graph classes, such as P4-free graphs or 2K2-free graphs. For classes defined by finitely many forbidden induced subgraphs, the boundary separating...

Université de Fribourg

Upper Domination : Towards a Dichotomy Through Boundary Properties

AbouEisha, Hassan ; Shahid, Hussain ; Lozin, Vadim ; Monnot, Jérôme ; Ries, Bernard ; Zamaraev, Viktor

In: Algorithmica, 2018, vol. 80, no. 10, p. 2799-2817

Anupper dominating set in a graph is a minimal dominating set of maximum cardinality. The problem of finding an upper dominating set is generally NP-hard.We study the complexity of this problem in finitely defined classes of graphs and conjecture that the problem admits a complexity dichotomy in this family. A helpful tool to study the complexity of an algorithmic problem is the notion of...

Haute école de gestion de Genève

Saudi Arabia : too big to hedge?

Jusufi, Ariana ; Piller, Robert (Dir.)

Mémoire de bachelor : Haute école de gestion de Genève, 2018 ; TDIBM 38.

Oil prices reached low levels in 2016. As a consequence, many countries dependent on oil revenues experienced significant budget deficits. Saudi Arabia, for which oil revenue accounts for more than 80% of national income, chose to implement a fiscal reform to reduce its oil dependency. Although fiscal reform is a good strategy for the long run, the solution does not take into account price risk;...