Influence of volatile metabolites of the rhizobacterium Serratia plymuthica 4Rx13 on soilborne fungi

Piyali Das

doi:10.18453/rosdok_id00002040

Piyali Das

Influence of volatile metabolites of the rhizobacterium Serratia plymuthica 4Rx13 on soilborne fungi

Universität Rostock, 2018

https://doi.org/10.18453/rosdok_id00002040

Abstract: The PGPR Serratia plymuthica 4Rx13 produces volatile metabolites that function like antibiotics and inhibit the growth of the phytopathogenic fungi (in-vitro). In presence of bacterial volatiles anti-oxidant enzymes were activated indicating the presence of reactive oxygen species (ROS) in fungal cells. Non-enzymatic lipid peroxidation suggested the disruption of fungal membrane integrity. The fungus Sclerotinia sclerotiorum produced one typical volatile called labda-8 (20),12,14-triene. The ammonia emitted by S. plymuthica 4Rx13 could inhibit fungal growth and evoke oxidative stress in fungi.

doctoral thesis free access

title:

Influence of volatile metabolites of the rhizobacterium Serratia plymuthica 4Rx13 on soilborne fungi

contributing persons:

Piyali Das[VerfasserIn]
	1127071572
Birgit Piechulla , Prof. Dr.[AkademischeR BetreuerIn]
	131807838
	Universität Rostock, Institut für Biowissenschaften, Abteilung Biochemie
Richard Splivallo , Prof. Dr.[AkademischeR BetreuerIn]
	Johann-Wolfgang-Goethe-Universität Frankfurt am Main, Biozentrum, Campus Riedberg

contributing corporate bodies:

Universität Rostock, Mathematisch-Naturwissenschaftliche Fakultät[Grad-verleihende Institution]
	2147083-2

abstract:

The PGPR Serratia plymuthica 4Rx13 produces volatile metabolites that function like antibiotics and inhibit the growth of the phytopathogenic fungi (in-vitro). In presence of bacterial volatiles anti-oxidant enzymes were activated indicating the presence of reactive oxygen species (ROS) in fungal cells. Non-enzymatic lipid peroxidation suggested the disruption of fungal membrane integrity. The fungus Sclerotinia sclerotiorum produced one typical volatile called labda-8 (20),12,14-triene. The ammonia emitted by S. plymuthica 4Rx13 could inhibit fungal growth and evoke oxidative stress in fungi. [English]

Die hemmende Wirkung flüchtiger Metabolite des Rhizobakteriums Serratia plymuthica 4Rx13 auf das Wachstum bodenbürtiger pflanzen-pathogener Pilze konnte in In-vitro-Experimenten nachgewiesen werden. In Dualkultur mit dem Bakterium zeigten diese Pilze eine durch die Bildung von reaktiven Sauerstoff-Spezies beschädigte Zellmembran und eine Erhöhung der Aktivität von Stress-induzierten Enzyme. Sclerotinia sclerotiorum an sich die Verbindung Labda-8(20),12,14-triene. Serratia plymuthica 4Rx13 emittierte auch Ammoniak, welches zur Wachstumshemmung der Pilze beigetragen haben könnte. [German]

document type:

doctoral thesis

institution:

Faculty of Mathematics and Natural Sciences

language:

English

subject class (DDC):

570 Life science

publication /
production:

Rostock: Universität Rostock

2018

identifiers: