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Authors: Patrick Schäfer, Stefanie Pfiffi, Lars M. Voll, Doreen Zajic, Peter M. Chandler, Frank Waller, Uwe Scholz, Jörn Pons-Kühnemann, Sophia Sonnewald, Uwe Sonnewald and Karl-Heinz Kogel

Patrick Schäfer

Corresponding author: Patrick.schaefer@agrar.uni-giessen.de
Research Centre for Biosystems, Land Use, and Nutrition; Justus Liebig University; Giessen, Germany

Stefanie Pfiffi

Research Centre for Biosystems, Land Use, and Nutrition; Justus Liebig University; Giessen, Germany

Lars M. Voll

Friedrich Alexander Universität Erlangen-Nürnberg; Department of Biochemistry; Erlangen, Germany

Doreen Zajic

Friedrich Alexander Universität Erlangen-Nürnberg; Department of Biochemistry; Erlangen, Germany

Peter M. Chandler

CSIRO Plant Industry; Canberra, Australia

Frank Waller

Research Centre for Biosystems, Land Use, and Nutrition; Justus Liebig University; Giessen, Germany

Uwe Scholz

Leibniz Institute of Plant Genetics and Crop Plant Research; IPK Gatersleben; Gatersleben, Germany

Jörn Pons-Kühnemann

Research Centre for Biosystems, Land Use, and Nutrition; Justus Liebig University; Giessen, Germany

Sophia Sonnewald

Friedrich Alexander Universität Erlangen-Nürnberg; Department of Biochemistry; Erlangen, Germany

Uwe Sonnewald

Friedrich Alexander Universität Erlangen-Nürnberg; Department of Biochemistry; Erlangen, Germany

Karl-Heinz Kogel

Research Centre for Biosystems, Land Use, and Nutrition; Justus Liebig University; Giessen, Germany

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Abstract:

Piriformospora indica is a mutualistic root-colonising basidiomycete that tranfers various benefits to colonized host plants including growth promotion, yield increases as well as abiotic and biotic stress tolerance. The fungus is characterized by a broad host spectrum encompassing various monocots and dicots.^1,2 Our recent microarray-based studies indicate a general plant defense suppression by P. indica and significant changes in the GA biosynthesis pathway.³ Furthermore, barley plants impaired in GA synthesis and perception showed a significant reduction in mutualistic colonization, which was associated with an elevated expression of defense-related genes. Here, we discuss the importance of plant hormones for compatibility in plant root-P. indica associations. Our data might provide a first explanation for the colonization success of the fungus in a wide range of higher plants.

Article Addendum to:
P Pulido, R Cazalis, FJ Cejudo. An antioxidant redox system in the nucleus of wheat seed cells suffering oxidative stress. Plant J 2009; 57: 132-45
PMID: 21838776 DOI: 10.1111/j.1365-313X