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Nat Commun

Title:		Volatile signalling by sesquiterpenes from ectomycorrhizal fungi reprogrammes root architecture
Author(s):		Ditengou FA; Muller A; Rosenkranz M; Felten J; Lasok H; van Doorn MM; Legue V; Palme K; Schnitzler JP; Polle A;
Address:		"Institute of Biology II, Faculty of Biology, Albert-Ludwigs-University of Freiburg, Schanzlestrasse 1, D-79104 Freiburg, Germany. Forest Botany and Tree Physiology, Georg-August Universitat Gottingen, Busgenweg 2, D-37077 Gottingen, Germany. Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum Munchen-German Research Center for Environmental Health (GmbH), Ingolstadter Landstrasse 1, D-85764 Neuherberg, Germany. Umea Plant Science Center, Department for Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, SE-901 83 Umea, Sweden. INRA and Lorraine University, UMR 1136, Interactions Arbres/Micro-organismes, Centre INRA de Nancy, 54280 Champenoux, France. 1] Institute of Biology II, Faculty of Biology, Albert-Ludwigs-University of Freiburg, Schanzlestrasse 1, D-79104 Freiburg, Germany [2] BIOSS Centre of Biological Systems Analysis, Albert-Ludwigs-University of Freiburg, Habsburgerstrasse 49, D-79104 Freiburg, Germany [3] Freiburg Institute of Advanced Sciences (FRIAS), Albert-Ludwigs-University of Freiburg, Albertstrasse 19, D-79104 Freiburg, Germany [4] Centre for Biological Signalling Studies (BIOSS), Albert-Ludwigs-University of Freiburg, Schanzlestrasse 18, D-79104 Freiburg, Germany"
Journal Title:		Nat Commun
Year:		2015
Volume:		20150223
Issue:
Page Number:		6279 -
DOI:		10.1038/ncomms7279
ISSN/ISBN:		2041-1723 (Electronic) 2041-1723 (Linking)
Abstract:		"The mutualistic association of roots with ectomycorrhizal fungi promotes plant health and is a hallmark of boreal and temperate forests worldwide. In the pre-colonization phase, before direct contact, lateral root (LR) production is massively stimulated, yet little is known about the signals exchanged during this step. Here, we identify sesquiterpenes (SQTs) as biologically active agents emitted by Laccaria bicolor while interacting with Populus or Arabidopsis. We show that inhibition of fungal SQT production by lovastatin strongly reduces LR proliferation and that (-)-thujopsene, a low-abundance SQT, is sufficient to stimulate LR formation in the absence of the fungus. Further, we show that the ectomycorrhizal ascomycote, Cenococcum geophilum, which cannot synthesize SQTs, does not promote LRs. We propose that the LR-promoting SQT signal creates a win-win situation by enhancing the root surface area for plant nutrient uptake and by improving fungal access to plant-derived carbon via root exudates"
Keywords:		Arabidopsis Ascomycota Indoleacetic Acids/metabolism Laccaria/*physiology Mycorrhizae/*physiology Plant Roots/*growth & development/metabolism Populus/*growth & development *Sesquiterpenes Superoxides/metabolism Symbiosis Volatile Organic Compounds;
Notes:		"MedlineDitengou, Franck A Muller, Anna Rosenkranz, Maaria Felten, Judith Lasok, Hanna van Doorn, Maja Miloradovic Legue, Valerie Palme, Klaus Schnitzler, Jorg-Peter Polle, Andrea eng Research Support, Non-U.S. Gov't England 2015/02/24 Nat Commun. 2015 Feb 23; 6:6279. doi: 10.1038/ncomms7279"